feat(swarm): walk farther

Use in the wild: Mojang

.gitignore

@@ -1,4 +1,4 @@
 build
 .gradle
-forge/run
+*/run
 .idea

Makefile

@@ -1,6 +1,6 @@
 common/src/main/resources/data/quaedam/projected-person-names:
-	curl -Ls https://github.com/wainshine/Chinese-Names-Corpus/raw/master/English_Names_Corpus/English_Names_Corpus%EF%BC%882W%EF%BC%89.txt | tail -n +4 | shuf | head -n 2500 > $@.tmp
-	curl -Ls https://github.com/wainshine/Chinese-Names-Corpus/raw/master/Chinese_Names_Corpus/Chinese_Names_Corpus%EF%BC%88120W%EF%BC%89.txt | tail -n +4 | shuf | head -n 2500 >> $@.tmp
+	curl -Ls https://github.com/wainshine/Chinese-Names-Corpus/raw/master/English_Names_Corpus/English_Names_Corpus%EF%BC%882W%EF%BC%89.txt | tail -n +4 | shuf | head -n 5000 > $@.tmp
+	#curl -Ls https://github.com/wainshine/Chinese-Names-Corpus/raw/master/Chinese_Names_Corpus/Chinese_Names_Corpus%EF%BC%88120W%EF%BC%89.txt | tail -n +4 | shuf | head -n 2500 >> $@.tmp
 	cat $@.tmp | tr -d '\015' > $@
 	rm $@.tmp
 

build.gradle.kts

@@ -2,11 +2,12 @@ import net.fabricmc.loom.api.LoomGradleExtensionAPI
 
 plugins {
     java
-    kotlin("jvm") version "1.8.22"
+    kotlin("jvm") version "1.9.0"
+    kotlin("plugin.serialization") version "1.9.0"
     id("architectury-plugin") version "3.4-SNAPSHOT"
-    id("dev.architectury.loom") version "1.2-SNAPSHOT" apply false
+    id("dev.architectury.loom") version "1.3-SNAPSHOT" apply false
     id("com.github.johnrengelman.shadow") version "8.1.1" apply false
-    id("io.github.juuxel.loom-quiltflower") version ("1.10.0") apply false
+    id("io.github.juuxel.loom-vineflower") version "1.11.0" apply false
 }
 
 architectury {
@@ -15,19 +16,23 @@ architectury {
 
 subprojects {
     apply(plugin = "dev.architectury.loom")
-    apply(plugin = "io.github.juuxel.loom-quiltflower")
+    apply(plugin = "io.github.juuxel.loom-vineflower")
 
     val loom = project.extensions.getByName<LoomGradleExtensionAPI>("loom")
 
     dependencies {
         "minecraft"("com.mojang:minecraft:${project.property("minecraft_version")}")
-        "mappings"(loom.officialMojangMappings())
+        "mappings"(loom.layered {
+            officialMojangMappings()
+            parchment("org.parchmentmc.data:parchment-${project.property("minecraft_version")}:${project.property("parchment_version")}@zip")
+        })
     }
 }
 
 allprojects {
     apply(plugin = "java")
     apply(plugin = "kotlin")
+    apply(plugin = "kotlinx-serialization")
     apply(plugin = "architectury-plugin")
     apply(plugin = "maven-publish")
 
@@ -35,8 +40,20 @@ allprojects {
     version = "1.0.0"
     group = "quaedam"
 
+    repositories {
+        maven {
+            name = "ParchmentMC"
+            setUrl("https://maven.parchmentmc.org")
+        }
+        maven {
+            name = "QuiltMC"
+            setUrl("https://maven.quiltmc.org/repository/release/")
+        }
+    }
+
     dependencies {
         compileOnly("org.jetbrains.kotlin:kotlin-stdlib")
+        compileOnly("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
     }
 
     tasks.withType<JavaCompile> {

common/build.gradle.kts

@@ -1,5 +1,5 @@
 architectury {
-    common("forge")
+    common("forge", "fabric", "quilt")
 }
 
 loom {

common/src/main/java/quaedam/mixin/MixinBedBlock.java

@@ -0,0 +1,30 @@
+package quaedam.mixin;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.BedBlock;
+import net.minecraft.world.phys.AABB;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+import quaedam.projection.swarm.ProjectedPersonEntity;
+
+import java.util.List;
+
+@Mixin(BedBlock.class)
+public class MixinBedBlock {
+
+    @Inject(at = @At("RETURN"), method = "kickVillagerOutOfBed(Lnet/minecraft/world/level/Level;Lnet/minecraft/core/BlockPos;)Z", cancellable = true)
+    private void kickVillagerOutOfBed(Level level, BlockPos blockPos, CallbackInfoReturnable<Boolean> cir) {
+        if (!cir.getReturnValueZ()) {
+            List<ProjectedPersonEntity> list = level.getEntitiesOfClass(ProjectedPersonEntity.class, new AABB(blockPos), LivingEntity::isSleeping);
+            if (!list.isEmpty()) {
+                list.get(0).stopSleeping();
+                cir.setReturnValue(true);
+            }
+        }
+    }
+
+}

common/src/main/java/quaedam/mixin/MixinClientLevel.java

@@ -8,8 +8,8 @@ import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
-import quaedam.projection.SkylightProjection;
-import quaedam.projection.SkylightProjectionEffect;
+import quaedam.projection.misc.SkylightProjection;
+import quaedam.projection.misc.SkylightProjectionEffect;
 import quaedam.projector.Projector;
 
 import java.util.List;

common/src/main/java/quaedam/mixin/MixinMinecraftServer.java

@@ -0,0 +1,24 @@
+package quaedam.mixin;
+
+import net.minecraft.core.GlobalPos;
+import net.minecraft.server.MinecraftServer;
+import org.spongepowered.asm.mixin.Mixin;
+import quaedam.mixininterface.ProjectionShellMutexAccessor;
+import quaedam.shell.ProjectionShellMutex;
+
+import java.util.LinkedHashMap;
+
+@Mixin(MinecraftServer.class)
+public class MixinMinecraftServer implements ProjectionShellMutexAccessor {
+
+    private LinkedHashMap<GlobalPos, ProjectionShellMutex.Lock> quaedam$projectionShellMutex;
+
+    @Override
+    public LinkedHashMap<GlobalPos, ProjectionShellMutex.Lock> quaedam$getProjectionShellMutex() {
+        if (quaedam$projectionShellMutex == null) {
+            quaedam$projectionShellMutex = new LinkedHashMap<>();
+        }
+        return quaedam$projectionShellMutex;
+    }
+
+}

common/src/main/java/quaedam/mixin/MixinPlayerList.java

@@ -0,0 +1,20 @@
+package quaedam.mixin;
+
+import net.minecraft.network.Connection;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.server.players.PlayerList;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import quaedam.config.SimpleQuaedamConfigPush;
+
+@Mixin(PlayerList.class)
+public class MixinPlayerList {
+
+    @Inject(at = @At("RETURN"), method = "placeNewPlayer(Lnet/minecraft/network/Connection;Lnet/minecraft/server/level/ServerPlayer;)V")
+    public void placeNewPlayer(Connection netManager, ServerPlayer player, CallbackInfo ci) {
+        SimpleQuaedamConfigPush.INSTANCE.sendCurrent(player);
+    }
+
+}

common/src/main/java/quaedam/mixininterface/ProjectionShellMutexAccessor.java

@@ -0,0 +1,12 @@
+package quaedam.mixininterface;
+
+import net.minecraft.core.GlobalPos;
+import quaedam.shell.ProjectionShellMutex;
+
+import java.util.LinkedHashMap;
+
+public interface ProjectionShellMutexAccessor {
+
+    LinkedHashMap<GlobalPos, ProjectionShellMutex.Lock> quaedam$getProjectionShellMutex();
+
+}

common/src/main/kotlin/quaedam/Quaedam.kt

@@ -5,14 +5,25 @@ import dev.architectury.registry.registries.DeferredRegister
 import dev.architectury.registry.registries.RegistrySupplier
 import net.minecraft.core.registries.Registries
 import net.minecraft.network.chat.Component
+import net.minecraft.resources.ResourceLocation
 import net.minecraft.world.item.CreativeModeTab
 import net.minecraft.world.item.ItemStack
-import net.minecraft.world.item.Items
 import org.slf4j.LoggerFactory
+import quaedam.config.QuaedamConfig
+import quaedam.misc.CraftingMaterials
+import quaedam.misc.causality.CausalityAnchor
+import quaedam.misc.reality.RealityStabler
+import quaedam.projection.ProjectionCommand
 import quaedam.projection.ProjectionEffectType
-import quaedam.projection.SkylightProjection
+import quaedam.projection.SimpleProjectionUpdate
+import quaedam.projection.misc.NoiseProjection
+import quaedam.projection.misc.SkylightProjection
+import quaedam.projection.misc.SoundProjection
+import quaedam.projection.music.MusicProjection
+import quaedam.projection.swarm.ProjectedPersonEntity
 import quaedam.projection.swarm.SwarmProjection
 import quaedam.projector.Projector
+import quaedam.shell.ProjectionShell
 
 object Quaedam {
 
@@ -25,28 +36,53 @@ object Quaedam {
     val blocks = DeferredRegister.create(ID, Registries.BLOCK)!!
     val blockEntities = DeferredRegister.create(ID, Registries.BLOCK_ENTITY_TYPE)!!
     val entities = DeferredRegister.create(ID, Registries.ENTITY_TYPE)!!
-    val schedule = DeferredRegister.create(ID, Registries.SCHEDULE)!!
-    val projectionEffects = DeferredRegister.create(ID, ProjectionEffectType.registryKey)!!
+    val schedules = DeferredRegister.create(ID, Registries.SCHEDULE)!!
+    val memoryTypes = DeferredRegister.create(ID, Registries.MEMORY_MODULE_TYPE)!!
+    val sensors = DeferredRegister.create(ID, Registries.SENSOR_TYPE)!!
+    val soundEvents = DeferredRegister.create(ID, Registries.SOUND_EVENT)!!
+    val poiTypes = DeferredRegister.create(ID, Registries.POINT_OF_INTEREST_TYPE)!!
+    val projectionEffects by lazy { DeferredRegister.create(ID, ProjectionEffectType.registryKey)!! }
 
     val creativeModeTab: RegistrySupplier<CreativeModeTab> = creativeModeTabs.register("quaedam") {
         CreativeTabRegistry.create(Component.translatable("category.quaedam")) {
-            ItemStack(Items.TORCH)
+            ItemStack(Projector.item.get())
         }
     }
 
+    val lateinit = mutableListOf<() -> Unit>()
+
     fun init() {
+        QuaedamConfig
         Projector
         ProjectionEffectType
         SkylightProjection
         SwarmProjection
+        SoundProjection
+        NoiseProjection
+        MusicProjection
+        ProjectionCommand
+        SimpleProjectionUpdate
+        ProjectionShell
+        CausalityAnchor
+        RealityStabler
+        CraftingMaterials
 
         creativeModeTabs.register()
         items.register()
         blocks.register()
         blockEntities.register()
         entities.register()
-        schedule.register()
+        schedules.register()
+        memoryTypes.register()
+        sensors.register()
+        soundEvents.register()
+        poiTypes.register()
         projectionEffects.register()
+
+        lateinit.forEach { it() }
+        lateinit.clear()
     }
 
+    fun resource(path: String) = ResourceLocation(ID, path)
+
 }

common/src/main/kotlin/quaedam/config/QuaedamConfig.kt

@@ -0,0 +1,105 @@
+package quaedam.config
+
+import dev.architectury.event.events.client.ClientPlayerEvent
+import dev.architectury.platform.Platform
+import dev.architectury.utils.GameInstance
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import net.fabricmc.api.EnvType
+import net.minecraft.nbt.*
+import quaedam.Quaedam
+import java.nio.file.Path
+import kotlin.io.path.exists
+import kotlin.io.path.notExists
+import kotlin.io.path.readText
+import kotlin.io.path.writeText
+
+@Serializable
+data class QuaedamConfig(
+    val valuesInt: Map<String, Int> = mapOf(),
+    val valuesFloat: Map<String, Float> = mapOf(),
+    val valuesDouble: Map<String, Double> = mapOf(),
+    val valuesBoolean: Map<String, Boolean> = mapOf(),
+) {
+
+    companion object {
+
+        private val localJson = Json {
+            isLenient = true
+            prettyPrint = true
+            encodeDefaults = true
+            ignoreUnknownKeys = true
+        }
+
+        private val pushJson = Json {
+            encodeDefaults = true
+            ignoreUnknownKeys = true
+        }
+
+        private val localFile: Path = Platform.getConfigFolder().resolve("quaedam.json")
+        private var local0 = loadLocalConfig()
+        var local
+            get() = local0
+            set(value) {
+                local0 = value
+                writeLocalConfig()
+            }
+        private var remote: QuaedamConfig? = null
+        val current get() = remote ?: local0
+
+        init {
+            SimpleQuaedamConfigPush
+
+            if (Platform.getEnv() == EnvType.CLIENT) {
+                ClientPlayerEvent.CLIENT_PLAYER_QUIT.register { player ->
+                    if (player == GameInstance.getClient().player) {
+                        applyRemoteConfig(null)
+                    }
+                }
+            }
+            if (localFile.notExists()) {
+                writeLocalConfig()
+            }
+        }
+
+        private fun loadLocalConfig(): QuaedamConfig = if (localFile.exists()) {
+            localJson.decodeFromString(localFile.readText())
+        } else {
+            QuaedamConfig()
+        }
+
+        private fun writeLocalConfig() {
+            localFile.writeText(localJson.encodeToString(local0))
+        }
+
+        fun applyRemoteConfig(config: QuaedamConfig?) {
+            Quaedam.logger.info("Received remote config push: $config")
+            remote = config
+        }
+
+        const val TAG_VALUES_INT = "ValuesInt"
+        const val TAG_VALUES_FLOAT = "ValuesFloat"
+        const val TAG_VALUES_DOUBLE = "ValuesDouble"
+        const val TAG_VALUES_BOOLEAN = "ValuesBoolean"
+
+        fun fromPushNbt(tag: CompoundTag): QuaedamConfig {
+            return QuaedamConfig(
+                valuesInt = pushJson.decodeFromString(tag.getString(TAG_VALUES_INT)),
+                valuesFloat = pushJson.decodeFromString(tag.getString(TAG_VALUES_FLOAT)),
+                valuesDouble = pushJson.decodeFromString(tag.getString(TAG_VALUES_DOUBLE)),
+                valuesBoolean = pushJson.decodeFromString(tag.getString(TAG_VALUES_BOOLEAN)),
+            )
+        }
+    }
+
+    fun toPushNbt(tag: CompoundTag) {
+        tag.putString(TAG_VALUES_INT, pushJson.encodeToString(valuesInt))
+        tag.putString(TAG_VALUES_FLOAT, pushJson.encodeToString(valuesFloat))
+        tag.putString(TAG_VALUES_DOUBLE, pushJson.encodeToString(valuesDouble))
+        tag.putString(TAG_VALUES_BOOLEAN, pushJson.encodeToString(valuesBoolean))
+    }
+
+    fun toPushNbt() = CompoundTag().also { toPushNbt(it) }
+
+}

common/src/main/kotlin/quaedam/config/SimpleQuaedamConfigPush.kt

@@ -0,0 +1,38 @@
+package quaedam.config
+
+import dev.architectury.networking.NetworkManager
+import dev.architectury.platform.Platform
+import io.netty.buffer.Unpooled
+import net.fabricmc.api.EnvType
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.network.FriendlyByteBuf
+import net.minecraft.server.level.ServerPlayer
+import quaedam.Quaedam
+
+object SimpleQuaedamConfigPush {
+
+    val id = Quaedam.resource("simple_config_push")
+
+    init {
+        if (Platform.getEnv() == EnvType.CLIENT) {
+            NetworkManager.registerReceiver(NetworkManager.Side.S2C, id, ::handle)
+        }
+    }
+
+    private fun handle(buf: FriendlyByteBuf, ctx: NetworkManager.PacketContext) {
+        val data = buf.readNbt()!!
+        val config = QuaedamConfig.fromPushNbt(data)
+        QuaedamConfig.applyRemoteConfig(config)
+    }
+
+    fun sendCurrent(player: ServerPlayer) = send(player, QuaedamConfig.current)
+
+    fun send(player: ServerPlayer, config: QuaedamConfig) = send(player, config.toPushNbt())
+
+    private fun send(player: ServerPlayer, data: CompoundTag) {
+        val buf = FriendlyByteBuf(Unpooled.buffer())
+        buf.writeNbt(data)
+        NetworkManager.sendToPlayer(player, id, buf)
+    }
+
+}

common/src/main/kotlin/quaedam/misc/CraftingMaterials.kt

@@ -0,0 +1,16 @@
+package quaedam.misc
+
+import net.minecraft.world.item.Item
+import quaedam.Quaedam
+
+object CraftingMaterials {
+
+    val ironCopperMetal = Quaedam.items.register("iron_copper_metal") {
+        Item(Item.Properties().`arch$tab`(Quaedam.creativeModeTab))
+    }!!
+
+    val projectionMetal = Quaedam.items.register("projection_metal") {
+        Item(Item.Properties().`arch$tab`(Quaedam.creativeModeTab))
+    }!!
+
+}

common/src/main/kotlin/quaedam/misc/causality/CABlock.kt

@@ -0,0 +1,109 @@
+package quaedam.misc.causality
+
+import net.minecraft.core.BlockPos
+import net.minecraft.core.Direction
+import net.minecraft.world.item.context.BlockPlaceContext
+import net.minecraft.world.level.BlockGetter
+import net.minecraft.world.level.Level
+import net.minecraft.world.level.LevelAccessor
+import net.minecraft.world.level.block.Block
+import net.minecraft.world.level.block.EntityBlock
+import net.minecraft.world.level.block.HorizontalDirectionalBlock
+import net.minecraft.world.level.block.SimpleWaterloggedBlock
+import net.minecraft.world.level.block.state.BlockState
+import net.minecraft.world.level.block.state.StateDefinition
+import net.minecraft.world.level.block.state.properties.BlockStateProperties
+import net.minecraft.world.level.material.FluidState
+import net.minecraft.world.level.material.Fluids
+import net.minecraft.world.level.material.MapColor
+import net.minecraft.world.phys.shapes.CollisionContext
+import net.minecraft.world.phys.shapes.Shapes
+import net.minecraft.world.phys.shapes.VoxelShape
+
+object CABlock : HorizontalDirectionalBlock(
+    Properties.of()
+        .noOcclusion()
+        .strength(2f)
+        .requiresCorrectToolForDrops()
+        .mapColor(MapColor.COLOR_CYAN)
+), EntityBlock, SimpleWaterloggedBlock {
+
+    val shapes = getShapeForEachState(::createVoxelShape)
+
+    init {
+        registerDefaultState(
+            defaultBlockState()
+                .setValue(FACING, Direction.EAST)
+                .setValue(BlockStateProperties.WATERLOGGED, false)
+        )
+    }
+
+    override fun newBlockEntity(pos: BlockPos, state: BlockState) = CABlockEntity(pos, state)
+
+    override fun createBlockStateDefinition(builder: StateDefinition.Builder<Block, BlockState>) {
+        super.createBlockStateDefinition(builder)
+        builder.add(FACING, BlockStateProperties.WATERLOGGED)
+    }
+
+    override fun getStateForPlacement(context: BlockPlaceContext): BlockState? {
+        if (!context.level.getBlockState(context.clickedPos.below()).canOcclude()) return null
+        return super.defaultBlockState().setValue(FACING, context.horizontalDirection)
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION")
+    override fun getShape(state: BlockState, level: BlockGetter, pos: BlockPos, context: CollisionContext) =
+        shapes[state]!!
+
+    private fun createVoxelShape(state: BlockState): VoxelShape =
+        when (state.getValue(FACING)) {
+            Direction.WEST, Direction.EAST -> Shapes.or(
+                box(0.0, 0.0, 0.0, 16.0, 12.0, 16.0),
+                box(7.0, 14.0, 6.0, 9.0, 16.0, 10.0),
+            )
+
+            Direction.SOUTH, Direction.NORTH -> Shapes.or(
+                box(0.0, 0.0, 0.0, 16.0, 12.0, 16.0),
+                box(6.0, 14.0, 7.0, 10.0, 16.0, 9.0),
+            )
+
+            else -> throw IllegalStateException(state.getValue(FACING).name)
+        }
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun updateShape(
+        state: BlockState,
+        direction: Direction,
+        neighborState: BlockState,
+        level: LevelAccessor,
+        pos: BlockPos,
+        neighborPos: BlockPos
+    ): BlockState {
+        if (state.getValue(BlockStateProperties.WATERLOGGED)) {
+            level.scheduleTick(pos, Fluids.WATER, Fluids.WATER.getTickDelay(level))
+        }
+        return super.updateShape(state, direction, neighborState, level, pos, neighborPos)
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun getFluidState(state: BlockState): FluidState = if (state.getValue(BlockStateProperties.WATERLOGGED)) {
+        Fluids.WATER.getSource(false)
+    } else {
+        super.getFluidState(state)
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun neighborChanged(
+        state: BlockState,
+        level: Level,
+        pos: BlockPos,
+        neighborBlock: Block,
+        neighborPos: BlockPos,
+        movedByPiston: Boolean
+    ) {
+        super.neighborChanged(state, level, pos, neighborBlock, neighborPos, movedByPiston)
+        if (!level.getBlockState(pos.below()).canOcclude()) {
+            level.destroyBlock(pos, true)
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/misc/causality/CABlockEntity.kt

@@ -0,0 +1,18 @@
+package quaedam.misc.causality
+
+import net.minecraft.core.BlockPos
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.network.protocol.Packet
+import net.minecraft.network.protocol.game.ClientGamePacketListener
+import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket
+import net.minecraft.world.level.block.entity.BlockEntity
+import net.minecraft.world.level.block.state.BlockState
+
+class CABlockEntity(pos: BlockPos, state: BlockState) :
+    BlockEntity(CausalityAnchor.blockEntity.get(), pos, state) {
+
+    override fun getUpdateTag(): CompoundTag = saveWithoutMetadata()
+
+    override fun getUpdatePacket(): Packet<ClientGamePacketListener> = ClientboundBlockEntityDataPacket.create(this)
+
+}

common/src/main/kotlin/quaedam/misc/causality/CausalityAnchor.kt

@@ -0,0 +1,33 @@
+package quaedam.misc.causality
+
+import net.minecraft.core.BlockPos
+import net.minecraft.world.item.BlockItem
+import net.minecraft.world.item.Item
+import net.minecraft.world.level.Level
+import net.minecraft.world.level.block.entity.BlockEntityType
+import net.minecraft.world.level.block.state.properties.BlockStateProperties
+import quaedam.Quaedam
+
+object CausalityAnchor {
+
+    const val ID = "causality_anchor"
+
+    val block = Quaedam.blocks.register(ID) { CABlock }!!
+
+    val item = Quaedam.items.register(ID) {
+        BlockItem(
+            CABlock, Item.Properties()
+                .stacksTo(1)
+                .`arch$tab`(Quaedam.creativeModeTab)
+        )
+    }!!
+
+    val blockEntity = Quaedam.blockEntities.register(ID) {
+        BlockEntityType.Builder.of(::CABlockEntity, block.get()).build(null)
+    }!!
+
+    fun checkEffect(level: Level, pos: BlockPos) = level.getChunkAt(pos)
+        .blockEntities
+        .any { (k, v) -> v is CABlockEntity && !level.getBlockState(k).getValue(BlockStateProperties.WATERLOGGED) }
+
+}

common/src/main/kotlin/quaedam/misc/reality/RSBlock.kt

@@ -0,0 +1,96 @@
+package quaedam.misc.reality
+
+import net.minecraft.core.BlockPos
+import net.minecraft.core.Direction
+import net.minecraft.world.item.context.BlockPlaceContext
+import net.minecraft.world.level.BlockGetter
+import net.minecraft.world.level.Level
+import net.minecraft.world.level.LevelAccessor
+import net.minecraft.world.level.block.Block
+import net.minecraft.world.level.block.EntityBlock
+import net.minecraft.world.level.block.HorizontalDirectionalBlock
+import net.minecraft.world.level.block.SimpleWaterloggedBlock
+import net.minecraft.world.level.block.state.BlockState
+import net.minecraft.world.level.block.state.StateDefinition
+import net.minecraft.world.level.block.state.properties.BlockStateProperties
+import net.minecraft.world.level.material.FluidState
+import net.minecraft.world.level.material.Fluids
+import net.minecraft.world.level.material.MapColor
+import net.minecraft.world.phys.shapes.CollisionContext
+import net.minecraft.world.phys.shapes.Shapes
+
+object RSBlock : HorizontalDirectionalBlock(
+    Properties.of()
+        .noOcclusion()
+        .strength(3f)
+        .requiresCorrectToolForDrops()
+        .mapColor(MapColor.COLOR_BLUE)
+), EntityBlock, SimpleWaterloggedBlock {
+
+    val shape = Shapes.or(
+        box(1.0, 0.0, 1.0, 15.0, 1.0, 15.0),
+        box(0.0, 1.0, 0.0, 16.0, 14.0, 16.0),
+        box(1.0, 14.0, 1.0, 15.0, 15.0, 15.0),
+    )
+
+    init {
+        registerDefaultState(
+            defaultBlockState()
+                .setValue(FACING, Direction.EAST)
+                .setValue(BlockStateProperties.WATERLOGGED, false)
+        )
+    }
+
+    override fun newBlockEntity(pos: BlockPos, state: BlockState) = RSBlockEntity(pos, state)
+
+    override fun createBlockStateDefinition(builder: StateDefinition.Builder<Block, BlockState>) {
+        super.createBlockStateDefinition(builder)
+        builder.add(FACING, BlockStateProperties.WATERLOGGED)
+    }
+
+    override fun getStateForPlacement(context: BlockPlaceContext): BlockState? {
+        if (!context.level.getBlockState(context.clickedPos.below()).canOcclude()) return null
+        return super.defaultBlockState().setValue(FACING, context.horizontalDirection)
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun getShape(state: BlockState, level: BlockGetter, pos: BlockPos, context: CollisionContext) = shape
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun updateShape(
+        state: BlockState,
+        direction: Direction,
+        neighborState: BlockState,
+        level: LevelAccessor,
+        pos: BlockPos,
+        neighborPos: BlockPos
+    ): BlockState {
+        if (state.getValue(BlockStateProperties.WATERLOGGED)) {
+            level.scheduleTick(pos, Fluids.WATER, Fluids.WATER.getTickDelay(level))
+        }
+        return super.updateShape(state, direction, neighborState, level, pos, neighborPos)
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun getFluidState(state: BlockState): FluidState = if (state.getValue(BlockStateProperties.WATERLOGGED)) {
+        Fluids.WATER.getSource(false)
+    } else {
+        super.getFluidState(state)
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun neighborChanged(
+        state: BlockState,
+        level: Level,
+        pos: BlockPos,
+        neighborBlock: Block,
+        neighborPos: BlockPos,
+        movedByPiston: Boolean
+    ) {
+        super.neighborChanged(state, level, pos, neighborBlock, neighborPos, movedByPiston)
+        if (!level.getBlockState(pos.below()).canOcclude()) {
+            level.destroyBlock(pos, true)
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/misc/reality/RSBlockEntity.kt

@@ -0,0 +1,18 @@
+package quaedam.misc.reality
+
+import net.minecraft.core.BlockPos
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.network.protocol.Packet
+import net.minecraft.network.protocol.game.ClientGamePacketListener
+import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket
+import net.minecraft.world.level.block.entity.BlockEntity
+import net.minecraft.world.level.block.state.BlockState
+
+class RSBlockEntity(pos: BlockPos, state: BlockState) :
+    BlockEntity(RealityStabler.blockEntity.get(), pos, state) {
+
+    override fun getUpdateTag(): CompoundTag = saveWithoutMetadata()
+
+    override fun getUpdatePacket(): Packet<ClientGamePacketListener> = ClientboundBlockEntityDataPacket.create(this)
+
+}

common/src/main/kotlin/quaedam/misc/reality/RealityStabler.kt

@@ -0,0 +1,32 @@
+package quaedam.misc.reality
+
+import net.minecraft.core.BlockPos
+import net.minecraft.world.item.BlockItem
+import net.minecraft.world.item.Item
+import net.minecraft.world.level.Level
+import net.minecraft.world.level.block.entity.BlockEntityType
+import quaedam.Quaedam
+
+object RealityStabler {
+
+    const val ID = "reality_stabler"
+
+    val block = Quaedam.blocks.register(ID) { RSBlock }!!
+
+    val item = Quaedam.items.register(ID) {
+        BlockItem(
+            RSBlock, Item.Properties()
+                .stacksTo(1)
+                .`arch$tab`(Quaedam.creativeModeTab)
+        )
+    }!!
+
+    val blockEntity = Quaedam.blockEntities.register(ID) {
+        BlockEntityType.Builder.of(::RSBlockEntity, block.get()).build(null)
+    }!!
+
+    fun checkEffect(level: Level, pos: BlockPos) = level.getChunkAt(pos)
+        .blockEntities
+        .any { (_, v) -> v is RSBlockEntity }
+
+}

common/src/main/kotlin/quaedam/projection/EntityProjectionBlock.kt

@@ -0,0 +1,52 @@
+package quaedam.projection
+
+import dev.architectury.registry.registries.DeferredSupplier
+import net.minecraft.client.Minecraft
+import net.minecraft.core.BlockPos
+import net.minecraft.server.level.ServerLevel
+import net.minecraft.world.level.Level
+import net.minecraft.world.level.block.EntityBlock
+import net.minecraft.world.level.block.entity.BlockEntityType
+import net.minecraft.world.level.block.state.BlockState
+import quaedam.shell.ProjectionEffectShell
+import quaedam.shell.ProjectionShellBlock
+import quaedam.utils.sendBlockUpdated
+
+abstract class EntityProjectionBlock<P : ProjectionEffect>(properties: Properties = createProperties()) :
+    ProjectionBlock<P>(properties), EntityBlock, ProjectionShellBlock {
+
+    companion object {
+        fun createProperties(): Properties = ProjectionBlock.createProperties()
+    }
+
+    abstract val blockEntity: DeferredSupplier<BlockEntityType<SimpleProjectionEntity<P>>>
+
+    override fun newBlockEntity(pos: BlockPos, state: BlockState) = blockEntity.get().create(pos, state)!!
+
+    @Suppress("UNCHECKED_CAST")
+    fun getBlockEntity(level: Level, pos: BlockPos) = (level.getBlockEntity(pos) as SimpleProjectionEntity<P>)
+
+    override fun applyProjectionEffect(level: ServerLevel, state: BlockState, pos: BlockPos) =
+        getBlockEntity(level, pos).cloneProjection()
+
+    fun applyChange(level: Level, pos: BlockPos, func: P.() -> Unit) {
+        val entity = getBlockEntity(level, pos)
+        val projection = entity.projection
+        projection.apply(func)
+        if (level.isClientSide) {
+            check(level == Minecraft.getInstance().player!!.level())
+            SimpleProjectionUpdate.send(pos, projection.toNbt())
+        } else {
+            getBlockEntity(level, pos).sendBlockUpdated()
+            sendUpdateToProjectors(level, pos)
+        }
+    }
+
+    override fun getProjectionEffectForShell(level: Level, pos: BlockPos) =
+        (getBlockEntity(level, pos).cloneProjection() as ProjectionEffectShell.Provider).createShell()
+
+    override fun applyFromShell(level: Level, pos: BlockPos, shell: ProjectionEffectShell) = applyChange(level, pos) {
+        fromNbt(shell.effect.toNbt())
+    }
+
+}

common/src/main/kotlin/quaedam/projection/ProjectionBlock.kt

@@ -29,6 +29,13 @@ abstract class ProjectionBlock<P : ProjectionEffect>(properties: Properties = cr
             }
             .toSet()
 
+        fun sendUpdateToProjectors(level: Level, pos: BlockPos) {
+            if (!level.isClientSide) {
+                findNearbyProjectors(level, pos)
+                    .forEach { (level.getBlockEntity(it) as ProjectorBlockEntity).checkUpdate() }
+            }
+        }
+
     }
 
     @Suppress("OVERRIDE_DEPRECATION")
@@ -42,17 +49,13 @@ abstract class ProjectionBlock<P : ProjectionEffect>(properties: Properties = cr
         itemStack: ItemStack
     ) {
         super.setPlacedBy(level, pos, state, placer, itemStack)
-        if (!level.isClientSide) {
-            findNearbyProjectors(level, pos)
-                .forEach { (level.getBlockEntity(it) as ProjectorBlockEntity).checkUpdate() }
-        }
+        sendUpdateToProjectors(level, pos)
     }
 
     override fun destroy(level: LevelAccessor, pos: BlockPos, state: BlockState) {
         super.destroy(level, pos, state)
-        if (level is Level && !level.isClientSide) {
-            findNearbyProjectors(level, pos)
-                .forEach { (level.getBlockEntity(it) as ProjectorBlockEntity).checkUpdate() }
+        if (level is Level) {
+            sendUpdateToProjectors(level, pos)
         }
     }
 

common/src/main/kotlin/quaedam/projection/ProjectionCommand.kt

@@ -0,0 +1,70 @@
+package quaedam.projection
+
+import com.mojang.brigadier.builder.LiteralArgumentBuilder.literal
+import com.mojang.brigadier.builder.RequiredArgumentBuilder.argument
+import com.mojang.brigadier.context.CommandContext
+import dev.architectury.event.events.common.CommandRegistrationEvent
+import net.minecraft.commands.CommandSourceStack
+import net.minecraft.commands.arguments.ResourceArgument.resource
+import net.minecraft.core.BlockPos
+import net.minecraft.core.Holder
+import net.minecraft.nbt.ListTag
+import net.minecraft.nbt.NbtUtils
+import quaedam.projector.Projector
+
+object ProjectionCommand {
+
+    init {
+        CommandRegistrationEvent.EVENT.register { dispatcher, ctx, _ ->
+            dispatcher.register(
+                literal<CommandSourceStack>("quaedam_projection")
+                    .then(
+                        literal<CommandSourceStack>("dump")
+                            .requires { it.hasPermission(2) }
+                            .executes(::dump)
+                    )
+                    .then(
+                        literal<CommandSourceStack>("get")
+                            .requires { it.hasPermission(2) }
+                            .then(
+                                argument<CommandSourceStack, Holder.Reference<ProjectionEffectType<*>>>(
+                                    "type",
+                                    resource(ctx, ProjectionEffectType.registryKey)
+                                )
+                                    .executes(::get)
+                            )
+                    )
+            )
+        }
+    }
+
+    private fun dump(ctx: CommandContext<CommandSourceStack>): Int {
+        val pos = BlockPos(
+            ctx.source.position.x.toInt(),
+            ctx.source.position.y.toInt(),
+            ctx.source.position.z.toInt()
+        )
+        val data = Projector.findNearbyProjectors(ctx.source.level, pos)
+            .map { ctx.source.level.getBlockEntity(it)!!.saveWithFullMetadata() }
+        val tag = ListTag()
+        tag.addAll(data)
+        ctx.source.sendSystemMessage(NbtUtils.toPrettyComponent(tag))
+        return 0
+    }
+
+    private fun get(ctx: CommandContext<CommandSourceStack>): Int {
+        val pos = BlockPos(
+            ctx.source.position.x.toInt(),
+            ctx.source.position.y.toInt(),
+            ctx.source.position.z.toInt()
+        )
+        val type = ctx.getArgument("type", Holder.Reference::class.java).value() as ProjectionEffectType<*>
+        val data = Projector.findNearbyProjections(ctx.source.level, pos, type)
+            .map { it.toNbt() }
+        val tag = ListTag()
+        tag.addAll(data)
+        ctx.source.sendSystemMessage(NbtUtils.toPrettyComponent(tag))
+        return 0
+    }
+
+}

common/src/main/kotlin/quaedam/projection/ProjectionEffect.kt

@@ -9,18 +9,19 @@ import net.minecraft.resources.ResourceLocation
 import net.minecraft.server.level.ServerLevel
 import net.minecraft.world.level.Level
 import net.minecraft.world.level.block.state.BlockState
+import quaedam.Quaedam
 
-abstract class ProjectionEffect {
+abstract class ProjectionEffect : Cloneable {
 
     abstract val type: ProjectionEffectType<*>
 
     abstract fun toNbt(tag: CompoundTag)
 
-    abstract fun fromNbt(tag: CompoundTag)
+    abstract fun fromNbt(tag: CompoundTag, trusted: Boolean = true)
 
-    fun toNbt() = CompoundTag().apply { toNbt(this) }
+    fun toNbt() = CompoundTag().also { toNbt(it) }
 
-    override fun equals(other: Any?) = other === this
+    override fun equals(other: Any?): Boolean = other === this
 
     override fun hashCode() = type.hashCode()
 
@@ -37,11 +38,11 @@ data class ProjectionEffectType<T : ProjectionEffect>(val constructor: () -> T)
     companion object {
 
         val registryKey: ResourceKey<Registry<ProjectionEffectType<*>>> =
-            ResourceKey.createRegistryKey(ResourceLocation("quaedam", "projection_effect"))
-        val registry: Registry<ProjectionEffectType<*>> = BuiltInRegistries.registerSimple(registryKey) { null }
+            ResourceKey.createRegistryKey(Quaedam.resource("projection_effect"))
+        val registry: Registry<ProjectionEffectType<*>> = BuiltInRegistries.registerSimple(registryKey) { nopEffect }
 
         val nopEffect: ProjectionEffectType<NopEffect> =
-            Registry.register(registry, ResourceLocation("quaedam", "nop"), ProjectionEffectType { NopEffect })
+            Registry.register(registry, Quaedam.resource("nop"), ProjectionEffectType { NopEffect })
 
     }
 
@@ -51,11 +52,11 @@ data class ProjectionEffectType<T : ProjectionEffect>(val constructor: () -> T)
     object NopEffect : ProjectionEffect() {
         override val type get() = nopEffect
         override fun toNbt(tag: CompoundTag) {}
-        override fun fromNbt(tag: CompoundTag) {}
+        override fun fromNbt(tag: CompoundTag, trusted: Boolean) {}
     }
 
 }
 
 interface ProjectionProvider<P : ProjectionEffect> {
-    fun createProjectionEffect(level: ServerLevel, state: BlockState, pos: BlockPos): P?
+    fun applyProjectionEffect(level: ServerLevel, state: BlockState, pos: BlockPos): P?
 }

common/src/main/kotlin/quaedam/projection/SimpleProjectionEntity.kt

@@ -0,0 +1,56 @@
+package quaedam.projection
+
+import dev.architectury.registry.registries.RegistrySupplier
+import net.minecraft.core.BlockPos
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.network.protocol.Packet
+import net.minecraft.network.protocol.game.ClientGamePacketListener
+import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket
+import net.minecraft.world.level.block.entity.BlockEntity
+import net.minecraft.world.level.block.entity.BlockEntityType
+import net.minecraft.world.level.block.state.BlockState
+
+class SimpleProjectionEntity<P : ProjectionEffect>(
+    type: BlockEntityType<SimpleProjectionEntity<P>>,
+    pos: BlockPos,
+    state: BlockState,
+    var projection: P,
+    val default: () -> P,
+) : BlockEntity(type, pos, state) {
+
+    companion object {
+        const val TAG_PROJECTION_EFFECT = "ProjectionEffect"
+
+        fun <P : ProjectionEffect, B : ProjectionBlock<P>> createBlockEntityType(
+            block: RegistrySupplier<B>,
+            default: () -> P,
+        ): BlockEntityType<SimpleProjectionEntity<P>> {
+            val type = ValueContainer<BlockEntityType<SimpleProjectionEntity<P>>>()
+            type.inner = BlockEntityType.Builder.of({ pos, state ->
+                SimpleProjectionEntity(type.inner!!, pos, state, default(), default)
+            }, block.get()).build(null)
+            return type.inner!!
+        }
+    }
+
+    data class ValueContainer<E>(var inner: E? = null)
+
+    override fun saveAdditional(tag: CompoundTag) {
+        super.saveAdditional(tag)
+        tag.put(TAG_PROJECTION_EFFECT, projection.toNbt())
+    }
+
+    override fun load(tag: CompoundTag) {
+        super.load(tag)
+        if (TAG_PROJECTION_EFFECT in tag) {
+            projection.fromNbt(tag.getCompound(TAG_PROJECTION_EFFECT))
+        }
+    }
+
+    override fun getUpdateTag(): CompoundTag = saveWithoutMetadata()
+
+    override fun getUpdatePacket(): Packet<ClientGamePacketListener> = ClientboundBlockEntityDataPacket.create(this)
+
+    fun cloneProjection() = default().apply { fromNbt(projection.toNbt()) }
+
+}

common/src/main/kotlin/quaedam/projection/SimpleProjectionUpdate.kt

@@ -0,0 +1,65 @@
+package quaedam.projection
+
+import dev.architectury.networking.NetworkManager
+import dev.architectury.networking.NetworkManager.PacketContext
+import io.netty.buffer.Unpooled
+import net.minecraft.core.BlockPos
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.network.FriendlyByteBuf
+import net.minecraft.network.chat.Component
+import net.minecraft.server.level.ServerPlayer
+import quaedam.Quaedam
+import quaedam.utils.sendBlockUpdated
+
+object SimpleProjectionUpdate {
+
+    val id = Quaedam.resource("simple_projection_update")
+
+    init {
+        NetworkManager.registerReceiver(NetworkManager.Side.C2S, id, ::handle)
+    }
+
+    private fun handle(buf: FriendlyByteBuf, ctx: PacketContext) = runCatching {
+        val player = ctx.player!! as ServerPlayer
+        val level = player.level()
+
+        val pos = buf.readBlockPos()
+        val data = buf.readNbt()!!
+
+        if (player.blockPosition().distSqr(pos) > 10 * 10) {
+            Quaedam.logger.info("Player ${player.name} tried to update a projection block far away")
+            if (player.blockPosition().distSqr(pos) > 50 * 50) {
+                player.connection.disconnect(Component.literal("[Quaedam] wth r u doing? why not waiting for server?"))
+            }
+            return@runCatching
+        }
+
+        level.server!!.execute {
+            val entity = level.getBlockEntity(pos) ?: return@execute
+            val blockEntity = entity as SimpleProjectionEntity<*>
+            try {
+                blockEntity.projection.fromNbt(data, trusted = false)
+            } catch (e: Throwable) {
+                Quaedam.logger.error(
+                    "Player ${player.name} tried to update projection " +
+                            "at $pos but caused error: $data", e
+                )
+                player.connection.disconnect(Component.literal("[Quaedam] ? wait what did you send to the server?"))
+                return@execute
+            }
+            entity.setChanged()
+            blockEntity.sendBlockUpdated()
+            ProjectionBlock.sendUpdateToProjectors(level, pos)
+        }
+    }
+        .onFailure { Quaedam.logger.error("Error handling simple projection update packet", it) }
+        .getOrThrow()
+
+    fun send(pos: BlockPos, data: CompoundTag) {
+        val buf = FriendlyByteBuf(Unpooled.buffer())
+        buf.writeBlockPos(pos)
+        buf.writeNbt(data)
+        NetworkManager.sendToServer(id, buf)
+    }
+
+}

common/src/main/kotlin/quaedam/projection/SkylightProjection.kt

@@ -1,58 +0,0 @@
-package quaedam.projection
-
-import net.minecraft.core.BlockPos
-import net.minecraft.nbt.CompoundTag
-import net.minecraft.server.level.ServerLevel
-import net.minecraft.world.item.BlockItem
-import net.minecraft.world.item.Item
-import net.minecraft.world.level.block.state.BlockState
-import quaedam.Quaedam
-
-object SkylightProjection {
-
-    const val ID = "skylight_projection"
-    const val SHORT_ID = "skylight"
-
-    val block = Quaedam.blocks.register(ID) { SkylightProjectionBlock }!!
-
-    val item = Quaedam.items.register(ID) {
-        BlockItem(
-            SkylightProjectionBlock, Item.Properties()
-                .`arch$tab`(Quaedam.creativeModeTab)
-        )
-    }!!
-
-    val effect = Quaedam.projectionEffects.register(SHORT_ID) {
-        ProjectionEffectType { SkylightProjectionEffect() }
-    }!!
-
-}
-
-object SkylightProjectionBlock : ProjectionBlock<SkylightProjectionEffect>(createProperties().lightLevel { 3 }) {
-
-    override fun createProjectionEffect(
-        level: ServerLevel,
-        state: BlockState,
-        pos: BlockPos
-    ) = SkylightProjectionEffect()
-
-}
-
-data class SkylightProjectionEffect(var factor: Double = 2.0) : ProjectionEffect() {
-
-    companion object {
-        const val TAG_FACTOR = "Factor"
-    }
-
-    override val type
-        get() = SkylightProjection.effect.get()!!
-
-    override fun toNbt(tag: CompoundTag) {
-        tag.putDouble(TAG_FACTOR, factor)
-    }
-
-    override fun fromNbt(tag: CompoundTag) {
-        factor = tag.getDouble(TAG_FACTOR)
-    }
-
-}

common/src/main/kotlin/quaedam/projection/misc/NoiseProjection.kt

@@ -0,0 +1,144 @@
+package quaedam.projection.misc
+
+import dev.architectury.event.events.client.ClientTickEvent
+import dev.architectury.platform.Platform
+import net.fabricmc.api.EnvType
+import net.minecraft.client.Minecraft
+import net.minecraft.client.resources.sounds.SimpleSoundInstance
+import net.minecraft.client.resources.sounds.SoundInstance
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.sounds.SoundEvent
+import net.minecraft.sounds.SoundSource
+import net.minecraft.util.RandomSource
+import net.minecraft.world.item.BlockItem
+import net.minecraft.world.item.Item
+import quaedam.Quaedam
+import quaedam.config.QuaedamConfig
+import quaedam.projection.EntityProjectionBlock
+import quaedam.projection.ProjectionEffect
+import quaedam.projection.ProjectionEffectType
+import quaedam.projection.SimpleProjectionEntity
+import quaedam.projector.Projector
+import quaedam.shell.ProjectionEffectShell
+import quaedam.shell.buildProjectionEffectShell
+import kotlin.math.min
+
+object NoiseProjection {
+
+    const val ID = "noise_projection"
+    const val SHORT_ID = "noise"
+
+    val block = Quaedam.blocks.register(ID) { NoiseProjectionBlock }!!
+
+    val item = Quaedam.items.register(ID) {
+        BlockItem(
+            NoiseProjectionBlock, Item.Properties()
+                .`arch$tab`(Quaedam.creativeModeTab)
+        )
+    }!!
+
+    val effect = Quaedam.projectionEffects.register(SHORT_ID) {
+        ProjectionEffectType { NoiseProjectionEffect() }
+    }!!
+
+    val blockEntity = Quaedam.blockEntities.register(ID) {
+        SimpleProjectionEntity.createBlockEntityType(block, ::NoiseProjectionEffect)
+    }!!
+
+    const val SOUND_NOISE_ID = "quaedam.projection.noise"
+    val soundEvent = Quaedam.soundEvents.register(SOUND_NOISE_ID) {
+        SoundEvent.createVariableRangeEvent(Quaedam.resource(SOUND_NOISE_ID))
+    }!!
+
+    init {
+        if (Platform.getEnv() == EnvType.CLIENT) {
+            ClientTickEvent.CLIENT_POST.register { game ->
+                val player = game.player ?: return@register
+                val random = (game.level ?: return@register).random
+                val projections = Projector.findNearbyProjections(player.level(), player.blockPosition(), effect.get())
+                if (projections.isNotEmpty()) {
+                    val rate = projections.maxOf { it.rate }
+                    val amount = min(projections.sumOf { it.amount }, 12)
+                    val volume = projections.fold(1.0f) { v, p -> v * p.volume }
+                    if (amount != 0 && random.nextInt(1000 / rate) == 1) {
+                        for (i in 0 until random.nextInt(amount)) {
+                            // play random noise
+                            playRandomNoise(random, game, volume)
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    private fun playRandomNoise(random: RandomSource, game: Minecraft, volume: Float) {
+        val volumeFactor = random.nextInt(100)
+        val sound = SimpleSoundInstance(
+            soundEvent.get().location,
+            SoundSource.AMBIENT,
+            when (volumeFactor) {
+                in 0..8 -> random.nextFloat() * 0.65f
+                in 10..15 -> random.nextFloat() * 0.5f + 0.5f
+                in 21..50 -> random.nextFloat() * 0.3f
+                else -> random.nextFloat() * 0.2f
+            } * volume,
+            random.nextFloat() + 0.4f,
+            RandomSource.create(random.nextLong()),
+            false,
+            0,
+            SoundInstance.Attenuation.NONE,
+            random.nextFloat() * 28.0 - 14,
+            random.nextFloat() * 12.0 - 2,
+            random.nextFloat() * 28.0 - 14,
+            true
+        )
+        game.soundManager.playDelayed(sound, random.nextInt(3))
+    }
+
+}
+
+object NoiseProjectionBlock : EntityProjectionBlock<NoiseProjectionEffect>(createProperties().lightLevel { 3 }) {
+
+    override val blockEntity = NoiseProjection.blockEntity
+
+}
+
+data class NoiseProjectionEffect(var rate: Int = 250, var amount: Int = 3, var volume: Float = 1.0f) :
+    ProjectionEffect(),
+    ProjectionEffectShell.Provider {
+
+    companion object {
+        const val TAG_RATE = "Rate"
+        const val TAG_AMOUNT = "Amount"
+        const val TAG_VOLUME = "Volume"
+
+        val maxAmount get() = QuaedamConfig.current.valuesInt["projection.noise.max_amount"] ?: 8
+        val maxRate get() = QuaedamConfig.current.valuesInt["projection.noise.max_rate"] ?: 300
+    }
+
+    override val type
+        get() = NoiseProjection.effect.get()!!
+
+    override fun toNbt(tag: CompoundTag) {
+        tag.putInt(TAG_RATE, rate)
+        tag.putInt(TAG_AMOUNT, amount)
+        tag.putFloat(TAG_VOLUME, volume)
+    }
+
+    override fun fromNbt(tag: CompoundTag, trusted: Boolean) {
+        rate = tag.getInt(TAG_RATE)
+        amount = tag.getInt(TAG_AMOUNT)
+        volume = tag.getFloat(TAG_VOLUME)
+        if (!trusted) {
+            amount = min(amount, maxAmount)
+            rate = min(rate, maxRate)
+        }
+    }
+
+    override fun createShell() = buildProjectionEffectShell(this) {
+        intSlider("quaedam.shell.noise.rate", ::rate, 0..maxRate step 5)
+        intSlider("quaedam.shell.noise.amount", ::amount, 0..maxAmount)
+        floatSlider("quaedam.shell.noise.volume", ::volume, 0.0f..1.0f, 0.1f)
+    }
+
+}

common/src/main/kotlin/quaedam/projection/misc/SkylightProjection.kt

@@ -0,0 +1,72 @@
+package quaedam.projection.misc
+
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.world.item.BlockItem
+import net.minecraft.world.item.Item
+import quaedam.Quaedam
+import quaedam.config.QuaedamConfig
+import quaedam.projection.EntityProjectionBlock
+import quaedam.projection.ProjectionEffect
+import quaedam.projection.ProjectionEffectType
+import quaedam.projection.SimpleProjectionEntity
+import quaedam.shell.ProjectionEffectShell
+import quaedam.shell.buildProjectionEffectShell
+import kotlin.math.min
+
+object SkylightProjection {
+
+    const val ID = "skylight_projection"
+    const val SHORT_ID = "skylight"
+
+    val block = Quaedam.blocks.register(ID) { SkylightProjectionBlock }!!
+
+    val item = Quaedam.items.register(ID) {
+        BlockItem(
+            SkylightProjectionBlock, Item.Properties()
+                .`arch$tab`(Quaedam.creativeModeTab)
+        )
+    }!!
+
+    val effect = Quaedam.projectionEffects.register(SHORT_ID) {
+        ProjectionEffectType { SkylightProjectionEffect() }
+    }!!
+
+    val blockEntity = Quaedam.blockEntities.register(ID) {
+        SimpleProjectionEntity.createBlockEntityType(block, ::SkylightProjectionEffect)
+    }!!
+
+}
+
+object SkylightProjectionBlock : EntityProjectionBlock<SkylightProjectionEffect>(createProperties().lightLevel { 3 }) {
+
+    override val blockEntity = SkylightProjection.blockEntity
+
+}
+
+data class SkylightProjectionEffect(var factor: Double = 2.0) : ProjectionEffect(), ProjectionEffectShell.Provider {
+
+    companion object {
+        const val TAG_FACTOR = "Factor"
+
+        val maxFactor get() = QuaedamConfig.current.valuesDouble["projection.skylight.max_factor"] ?: 5.0
+    }
+
+    override val type
+        get() = SkylightProjection.effect.get()!!
+
+    override fun toNbt(tag: CompoundTag) {
+        tag.putDouble(TAG_FACTOR, factor)
+    }
+
+    override fun fromNbt(tag: CompoundTag, trusted: Boolean) {
+        factor = tag.getDouble(TAG_FACTOR)
+        if (!trusted) {
+            factor = min(factor, maxFactor)
+        }
+    }
+
+    override fun createShell() = buildProjectionEffectShell(this) {
+        doubleSlider("quaedam.shell.skylight.factor", ::factor, 0.0..maxFactor, 0.1)
+    }
+
+}

common/src/main/kotlin/quaedam/projection/misc/SoundProjection.kt

@@ -0,0 +1,77 @@
+package quaedam.projection.misc
+
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.world.item.BlockItem
+import net.minecraft.world.item.Item
+import quaedam.Quaedam
+import quaedam.config.QuaedamConfig
+import quaedam.projection.EntityProjectionBlock
+import quaedam.projection.ProjectionEffect
+import quaedam.projection.ProjectionEffectType
+import quaedam.projection.SimpleProjectionEntity
+import quaedam.shell.ProjectionEffectShell
+import quaedam.shell.buildProjectionEffectShell
+import kotlin.math.min
+
+object SoundProjection {
+
+    const val ID = "sound_projection"
+    const val SHORT_ID = "sound"
+
+    val block = Quaedam.blocks.register(ID) { SoundProjectionBlock }!!
+
+    val item = Quaedam.items.register(ID) {
+        BlockItem(
+            SoundProjectionBlock, Item.Properties()
+                .`arch$tab`(Quaedam.creativeModeTab)
+        )
+    }!!
+
+    val effect = Quaedam.projectionEffects.register(SHORT_ID) {
+        ProjectionEffectType { SoundProjectionEffect() }
+    }!!
+
+    val blockEntity = Quaedam.blockEntities.register(ID) {
+        SimpleProjectionEntity.createBlockEntityType(block) { SoundProjectionEffect() }
+    }!!
+
+}
+
+object SoundProjectionBlock : EntityProjectionBlock<SoundProjectionEffect>(createProperties().lightLevel { 3 }) {
+
+    override val blockEntity = SoundProjection.blockEntity
+
+}
+
+data class SoundProjectionEffect(var rate: Int = 60, var volume: Float = 1.0f) : ProjectionEffect(),
+    ProjectionEffectShell.Provider {
+
+    companion object {
+        const val TAG_RATE = "Rate"
+        const val TAG_VOLUME = "Volume"
+
+        val maxRate get() = QuaedamConfig.current.valuesInt["projection.sound.max_rate"] ?: 210
+    }
+
+    override val type
+        get() = SoundProjection.effect.get()!!
+
+    override fun toNbt(tag: CompoundTag) {
+        tag.putInt(TAG_RATE, rate)
+        tag.putFloat(TAG_VOLUME, volume)
+    }
+
+    override fun fromNbt(tag: CompoundTag, trusted: Boolean) {
+        rate = tag.getInt(TAG_RATE)
+        volume = tag.getFloat(TAG_VOLUME)
+        if (!trusted) {
+            rate = min(rate, maxRate)
+        }
+    }
+
+    override fun createShell() = buildProjectionEffectShell(this) {
+        intSlider("quaedam.shell.sound.rate", ::rate, 0..maxRate)
+        floatSlider("quaedam.shell.sound.volume", ::volume, 0.0f..1.0f, 0.1f)
+    }
+
+}

common/src/main/kotlin/quaedam/projection/music/Composer.kt

@@ -0,0 +1,91 @@
+package quaedam.projection.music
+
+import net.minecraft.world.level.block.state.properties.NoteBlockInstrument
+import kotlin.math.abs
+import kotlin.random.Random
+import kotlin.random.nextInt
+
+/**
+ * The composer for music.
+ * rhythmRandom is used for a better rhythm sync between different instruments.
+ */
+class Composer(val noteRandom: Random, val rhythmRandom: Random, val instrument: NoteBlockInstrument) {
+
+    data class Note(val note: Int, val volume: Float, val time: Int)
+
+    val baseTime = arrayOf(5, 5, 3, 3, 4, 4, 2, 2, 8).random(rhythmRandom)
+    val baseNote = noteRandom.nextInt(5..19)
+
+    val mayDropOut = instrument in arrayOf(
+        NoteBlockInstrument.BASEDRUM,
+        NoteBlockInstrument.HAT,
+        NoteBlockInstrument.SNARE,
+    )
+
+    fun composeMusic(): List<Note> {
+        var note = (0..rhythmRandom.nextInt(4)).flatMap { composeSection() }
+        note = decorate(note)
+        if (mayDropOut && rhythmRandom.nextInt(6) != 0) {
+            val dropRate = arrayOf(2, 3, 3, 4, 4, 4, 4, 6).random(rhythmRandom)
+            note = note.chunked(dropRate).map {
+                val first = it.first()
+                Note(first.note, first.volume, it.sumOf { note -> note.time })
+            }
+        }
+        return note
+    }
+
+    fun decorate(notes: List<Note>) = notes.map {
+        if (noteRandom.nextInt(4) == 0) {
+            doDecorate(it)
+        } else {
+            it
+        }
+    }
+
+    fun doDecorate(note: Note): Note {
+        var noteVal = note.note
+        if (noteRandom.nextInt(4) == 0) {
+            if (noteRandom.nextBoolean()) {
+                noteVal += 1
+            } else {
+                noteVal -= 1
+            }
+        }
+        var volume = note.volume
+        if (noteRandom.nextInt(4) == 0) {
+            volume *= noteRandom.nextFloat() * 0.8f + 0.6f
+        }
+        return Note(noteVal, volume, note.time)
+    }
+
+    fun composeSection(depth: Int = 0): List<Note> {
+        if (depth < 3 && rhythmRandom.nextBoolean()) {
+            val notes = (0..rhythmRandom.nextInt(3 - depth)).flatMap { composeSection(depth + 1) }
+            if (depth == 2) {
+                return (0..rhythmRandom.nextInt(3)).flatMap { notes }
+            } else {
+                return notes
+            }
+        } else {
+            var notePointer = baseNote + noteRandom.nextInt(-3..3)
+            var direction = -1
+            var directionCounter = 0
+            return (0..rhythmRandom.nextInt(4..16)).map {
+                if (directionCounter == 0) {
+                    // start new direction
+                    directionCounter = rhythmRandom.nextInt(2..6)
+                    direction = if (directionCounter % 2 == 0) {
+                        rhythmRandom.nextInt(-2..2)
+                    } else {
+                        noteRandom.nextInt(-3..3)
+                    }
+                }
+                notePointer = abs(notePointer + direction) % 25
+                directionCounter--
+                Note(notePointer, 1.0f, baseTime + rhythmRandom.nextInt(-1..1))
+            }
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/projection/music/MusicPlayer.kt

@@ -0,0 +1,128 @@
+package quaedam.projection.music
+
+import dev.architectury.utils.GameInstance
+import net.minecraft.client.resources.sounds.SimpleSoundInstance
+import net.minecraft.client.resources.sounds.SoundInstance
+import net.minecraft.core.BlockPos
+import net.minecraft.core.Holder
+import net.minecraft.core.particles.ParticleTypes
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.sounds.SoundEvent
+import net.minecraft.sounds.SoundSource
+import net.minecraft.util.RandomSource
+import net.minecraft.world.level.Level
+import net.minecraft.world.level.block.NoteBlock
+import net.minecraft.world.level.block.entity.SkullBlockEntity
+import net.minecraft.world.level.block.state.properties.BlockStateProperties
+import quaedam.projector.Projector
+import kotlin.random.Random
+
+class MusicPlayer(
+    val noteSeed: Long,
+    val rhythmSeed: Long,
+    val level: Level,
+    val pos: BlockPos,
+    val startedAt: Long = level.gameTime
+) {
+
+    companion object {
+        const val TAG_NOTE_SEED = "NoteSeed"
+        const val TAG_RHYTHM_SEED = "RhythmSeed"
+        const val TAG_STARTED_AT = "StartedAt"
+    }
+
+    constructor(tag: CompoundTag, level: Level, pos: BlockPos) : this(
+        tag.getLong(TAG_NOTE_SEED),
+        tag.getLong(TAG_RHYTHM_SEED),
+        level,
+        pos,
+        tag.getLong(TAG_STARTED_AT)
+    )
+
+    var notes = Composer(
+        noteRandom = Random(noteSeed),
+        rhythmRandom = Random(rhythmSeed),
+        instrument = level.getBlockState(pos).getValue(BlockStateProperties.NOTEBLOCK_INSTRUMENT)
+    ).composeMusic().toMutableList()
+    val totalTime = notes.sumOf { it.time }.toLong()
+    var remainingTime = totalTime
+    val isEnd get() = remainingTime <= 0 || notes.isEmpty()
+    var noteTime = 0
+
+    init {
+        val currentRemaining = totalTime - (level.gameTime - startedAt)
+        while (remainingTime > currentRemaining && !isEnd) {
+            // seek to current position
+            remainingTime -= fetchNote().time
+        }
+    }
+
+    private fun fetchNote() = notes.removeFirst()
+
+    fun tick() {
+        if (isEnd)
+            return
+        if (noteTime <= 0) {
+            // start new note
+            val note = fetchNote()
+            remainingTime -= note.time
+            noteTime = note.time
+            if (level.isClientSide) {
+                // play note
+                val projections = Projector.findNearbyProjections(level, pos, MusicProjection.effect.get())
+                    .takeIf { it.isNotEmpty() } ?: listOf(MusicProjectionEffect())
+                val volume = projections.maxOf { it.volumeFactor } * note.volume
+                val particle = projections.any { it.particle }
+                val instrument = level.getBlockState(pos).getValue(BlockStateProperties.NOTEBLOCK_INSTRUMENT)
+                val pitch = if (instrument.isTunable) {
+                    NoteBlock.getPitchFromNote(note.note)
+                } else {
+                    1.0f
+                }
+
+                val holder = if (instrument.hasCustomSound()) {
+                    val entity = level.getBlockEntity(pos.below())
+                    (entity as? SkullBlockEntity)?.noteBlockSound?.let {
+                        Holder.direct(SoundEvent.createVariableRangeEvent(it))
+                    }
+                } else {
+                    null
+                } ?: instrument.soundEvent
+
+                if (particle) {
+                    level.addParticle(
+                        ParticleTypes.NOTE,
+                        pos.x.toDouble() + 0.5,
+                        pos.y.toDouble() + 1.2,
+                        pos.z.toDouble() + 0.5,
+                        note.time.toDouble() / 24.0,
+                        0.0,
+                        0.0
+                    )
+                }
+
+                val instance = SimpleSoundInstance(
+                    holder.value().location,
+                    SoundSource.RECORDS,
+                    volume,
+                    pitch,
+                    RandomSource.create(level.random.nextLong()),
+                    false, 0, SoundInstance.Attenuation.LINEAR,
+                    pos.x.toDouble() + 0.5,
+                    pos.y.toDouble() + 0.5,
+                    pos.z.toDouble() + 0.5,
+                    false
+                )
+                GameInstance.getClient().soundManager.play(instance)
+            }
+        }
+        noteTime--
+    }
+
+    fun toTag() = CompoundTag().apply {
+        putLong(TAG_NOTE_SEED, noteSeed)
+        putLong(TAG_RHYTHM_SEED, rhythmSeed)
+        putLong(TAG_STARTED_AT, startedAt)
+    }
+
+}

common/src/main/kotlin/quaedam/projection/music/MusicProjection.kt

@@ -0,0 +1,85 @@
+package quaedam.projection.music
+
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.world.item.BlockItem
+import net.minecraft.world.item.Item
+import quaedam.Quaedam
+import quaedam.config.QuaedamConfig
+import quaedam.projection.EntityProjectionBlock
+import quaedam.projection.ProjectionEffect
+import quaedam.projection.ProjectionEffectType
+import quaedam.projection.SimpleProjectionEntity
+import quaedam.shell.ProjectionEffectShell
+import quaedam.shell.buildProjectionEffectShell
+import kotlin.math.min
+
+object MusicProjection {
+
+    const val ID = "music_projection"
+    const val SHORT_ID = "music"
+
+    val block = Quaedam.blocks.register(ID) { MusicProjectionBlock }!!
+
+    val item = Quaedam.items.register(ID) {
+        BlockItem(
+            MusicProjectionBlock, Item.Properties()
+                .`arch$tab`(Quaedam.creativeModeTab)
+        )
+    }!!
+
+    val effect = Quaedam.projectionEffects.register(SHORT_ID) {
+        ProjectionEffectType { MusicProjectionEffect() }
+    }!!
+
+    val blockEntity = Quaedam.blockEntities.register(ID) {
+        SimpleProjectionEntity.createBlockEntityType(block) { MusicProjectionEffect() }
+    }!!
+
+    init {
+        SmartInstrument
+    }
+
+}
+
+object MusicProjectionBlock : EntityProjectionBlock<MusicProjectionEffect>(createProperties().lightLevel { 3 }) {
+
+    override val blockEntity = MusicProjection.blockEntity
+
+}
+
+data class MusicProjectionEffect(var volumeFactor: Float = 1.0f, var particle: Boolean = true) : ProjectionEffect(),
+    ProjectionEffectShell.Provider {
+
+    companion object {
+        const val TAG_VOLUME_FACTOR = "VolumeFactor"
+        const val TAG_PARTICLE = "Particle"
+
+        val maxVolumeFactor get() = QuaedamConfig.current.valuesFloat["projection.music.max_volume_factor"] ?: 5.0f
+        val enforceParticle get() = QuaedamConfig.current.valuesBoolean["projection.music.enforce_particle"]
+    }
+
+    override val type
+        get() = MusicProjection.effect.get()!!
+
+    override fun toNbt(tag: CompoundTag) {
+        tag.putFloat(TAG_VOLUME_FACTOR, volumeFactor)
+        tag.putBoolean(TAG_PARTICLE, particle)
+    }
+
+    override fun fromNbt(tag: CompoundTag, trusted: Boolean) {
+        volumeFactor = tag.getFloat(TAG_VOLUME_FACTOR)
+        particle = tag.getBoolean(TAG_PARTICLE)
+        if (!trusted) {
+            volumeFactor = min(volumeFactor, maxVolumeFactor)
+            particle = enforceParticle ?: particle
+        }
+    }
+
+    override fun createShell() = buildProjectionEffectShell(this) {
+        floatSlider("quaedam.shell.music.volume_factor", ::volumeFactor, 0.0f..maxVolumeFactor, 0.1f)
+        if (enforceParticle == null) {
+            boolean("quaedam.shell.music.particle", ::particle)
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/projection/music/SmartInstrument.kt

@@ -0,0 +1,236 @@
+package quaedam.projection.music
+
+import net.minecraft.core.BlockPos
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.network.protocol.Packet
+import net.minecraft.network.protocol.game.ClientGamePacketListener
+import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket
+import net.minecraft.server.level.ServerLevel
+import net.minecraft.util.RandomSource
+import net.minecraft.world.InteractionHand
+import net.minecraft.world.InteractionResult
+import net.minecraft.world.entity.player.Player
+import net.minecraft.world.item.BlockItem
+import net.minecraft.world.item.Item
+import net.minecraft.world.level.Level
+import net.minecraft.world.level.block.Block
+import net.minecraft.world.level.block.EntityBlock
+import net.minecraft.world.level.block.entity.BlockEntity
+import net.minecraft.world.level.block.entity.BlockEntityTicker
+import net.minecraft.world.level.block.entity.BlockEntityType
+import net.minecraft.world.level.block.state.BlockState
+import net.minecraft.world.level.block.state.StateDefinition
+import net.minecraft.world.level.block.state.properties.BlockStateProperties
+import net.minecraft.world.level.block.state.properties.NoteBlockInstrument
+import net.minecraft.world.level.material.MapColor
+import net.minecraft.world.phys.BlockHitResult
+import quaedam.Quaedam
+import quaedam.misc.causality.CausalityAnchor
+import quaedam.projector.Projector
+import quaedam.utils.getChunksNearby
+import quaedam.utils.sendBlockUpdated
+
+object SmartInstrument {
+
+    const val ID = "smart_instrument"
+
+    val block = Quaedam.blocks.register(ID) { SmartInstrumentBlock }!!
+
+    val item = Quaedam.items.register(ID) {
+        BlockItem(
+            SmartInstrumentBlock, Item.Properties()
+                .`arch$tab`(Quaedam.creativeModeTab)
+        )
+    }!!
+
+    val blockEntity = Quaedam.blockEntities.register(ID) {
+        BlockEntityType.Builder.of(::SmartInstrumentBlockEntity, block.get()).build(null)
+    }!!
+
+}
+
+object SmartInstrumentBlock : Block(
+    Properties.of()
+        .strength(2.7f)
+        .requiresCorrectToolForDrops()
+        .mapColor(MapColor.COLOR_BROWN)
+        .randomTicks()
+), EntityBlock {
+
+    init {
+        registerDefaultState(
+            defaultBlockState()
+                .setValue(BlockStateProperties.NOTEBLOCK_INSTRUMENT, NoteBlockInstrument.HARP)
+        )
+    }
+
+    override fun newBlockEntity(pos: BlockPos, state: BlockState) = SmartInstrumentBlockEntity(pos, state)
+
+    override fun createBlockStateDefinition(builder: StateDefinition.Builder<Block, BlockState>) {
+        super.createBlockStateDefinition(builder)
+        builder.add(BlockStateProperties.NOTEBLOCK_INSTRUMENT)
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun neighborChanged(
+        state: BlockState,
+        level: Level,
+        pos: BlockPos,
+        neighborBlock: Block,
+        neighborPos: BlockPos,
+        movedByPiston: Boolean
+    ) {
+        super.neighborChanged(state, level, pos, neighborBlock, neighborPos, movedByPiston)
+        level.setBlock(
+            pos,
+            state.setValue(BlockStateProperties.NOTEBLOCK_INSTRUMENT, level.getBlockState(pos.below()).instrument()),
+            UPDATE_ALL
+        )
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun onPlace(state: BlockState, level: Level, pos: BlockPos, oldState: BlockState, movedByPiston: Boolean) {
+        super.onPlace(state, level, pos, oldState, movedByPiston)
+        level.setBlock(
+            pos,
+            state.setValue(BlockStateProperties.NOTEBLOCK_INSTRUMENT, level.getBlockState(pos.below()).instrument()),
+            UPDATE_ALL
+        )
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION")
+    override fun randomTick(
+        state: BlockState,
+        level: ServerLevel,
+        pos: BlockPos,
+        random: RandomSource
+    ) {
+        if (Projector.findNearbyProjections(level, pos, MusicProjection.effect.get()).isNotEmpty()) {
+            val entity = level.getBlockEntity(pos) as SmartInstrumentBlockEntity
+            if (entity.player == null) {
+                entity.startMusic()
+            }
+        }
+    }
+
+    @Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
+    override fun use(
+        state: BlockState,
+        level: Level,
+        pos: BlockPos,
+        player: Player,
+        hand: InteractionHand,
+        hit: BlockHitResult
+    ): InteractionResult {
+        if (Projector.findNearbyProjections(level, pos, MusicProjection.effect.get()).isNotEmpty()
+            || CausalityAnchor.checkEffect(level, pos)
+        ) {
+            val entity = level.getBlockEntity(pos) as SmartInstrumentBlockEntity
+            if (entity.player == null && !level.isClientSide) {
+                entity.startMusic()
+            }
+            return InteractionResult.sidedSuccess(level.isClientSide)
+        }
+        return super.use(state, level, pos, player, hand, hit)
+    }
+
+    override fun <T : BlockEntity?> getTicker(
+        level: Level,
+        state: BlockState,
+        blockEntityType: BlockEntityType<T>
+    ): BlockEntityTicker<T> {
+        return BlockEntityTicker { _, _, _, entity ->
+            (entity as? SmartInstrumentBlockEntity)?.tick()
+        }
+    }
+
+}
+
+class SmartInstrumentBlockEntity(pos: BlockPos, state: BlockState) :
+    BlockEntity(SmartInstrument.blockEntity.get(), pos, state) {
+
+    companion object {
+        const val TAG_MUSIC = "Music"
+    }
+
+    // delay MusicPlayer initialization until level is available
+    var playerData: CompoundTag? = null
+    var player: MusicPlayer? = null
+
+    override fun getUpdateTag(): CompoundTag = saveWithoutMetadata()
+
+    override fun getUpdatePacket(): Packet<ClientGamePacketListener> = ClientboundBlockEntityDataPacket.create(this)
+
+    override fun load(tag: CompoundTag) {
+        super.load(tag)
+        if (TAG_MUSIC in tag) {
+            try {
+                player = MusicPlayer(tag.getCompound(TAG_MUSIC), level!!, blockPos)
+            } catch (e: Throwable) {
+                playerData = tag.getCompound(TAG_MUSIC)
+            }
+        }
+    }
+
+    override fun saveAdditional(tag: CompoundTag) {
+        super.saveAdditional(tag)
+        if (playerData != null) {
+            tag.put(TAG_MUSIC, playerData!!)
+        }
+        if (player != null) {
+            tag.put(TAG_MUSIC, player!!.toTag())
+        }
+    }
+
+    private fun checkProjections() =
+        Projector.findNearbyProjections(level!!, blockPos, MusicProjection.effect.get()).isNotEmpty()
+                || CausalityAnchor.checkEffect(level!!, blockPos)
+
+    fun startMusic(force: Boolean = false, synced: Boolean = false) {
+        if ((player == null || force) && !level!!.isClientSide && checkProjections()) {
+            player = MusicPlayer(level!!.random.nextLong(), level!!.gameTime / 20, level!!, blockPos)
+            setChanged()
+            sendBlockUpdated()
+            if (!synced) {
+                // sync start to other instruments
+                level!!.getChunksNearby(blockPos, 1)
+                    .flatMap {
+                        it.blockEntities
+                            .filterValues { entity -> entity is SmartInstrumentBlockEntity }
+                            .filterKeys { pos -> pos.distSqr(blockPos) < 100 }
+                            .values
+                    }
+                    .filterNot { it == this }
+                    .filterIsInstance<SmartInstrumentBlockEntity>()
+                    .forEach { it.startMusic(force = true, synced = true) }
+            }
+        }
+    }
+
+    fun tick() {
+        if (playerData != null) {
+            player = MusicPlayer(playerData!!, level!!, blockPos)
+            playerData = null
+        }
+        if (player != null) {
+            if (checkProjections()) {
+                player!!.tick()
+                if (!level!!.isClientSide) {
+                    if (player!!.isEnd) {
+                        player = null
+                        setChanged()
+                        sendBlockUpdated()
+                        if (CausalityAnchor.checkEffect(level!!, blockPos) || level!!.random.nextInt(7) != 0) {
+                            startMusic()
+                        }
+                    }
+                }
+            } else {
+                player = null
+                setChanged()
+                sendBlockUpdated()
+            }
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/projection/swarm/ProjectedPersonAI.kt

@@ -1,142 +0,0 @@
-package quaedam.projection.swarm
-
-import com.google.common.collect.ImmutableList
-import net.minecraft.world.entity.ai.Brain
-import net.minecraft.world.entity.ai.behavior.*
-import net.minecraft.world.entity.ai.memory.MemoryModuleType
-import net.minecraft.world.entity.ai.sensing.SensorType
-import net.minecraft.world.entity.schedule.Activity
-import net.minecraft.world.entity.schedule.Schedule
-import net.minecraft.world.entity.schedule.ScheduleBuilder
-import quaedam.Quaedam
-import quaedam.utils.weight
-import quaedam.utils.weightR
-
-object ProjectedPersonAI {
-
-    private val memoryTypes = listOf(
-        MemoryModuleType.PATH,
-        MemoryModuleType.LOOK_TARGET,
-        MemoryModuleType.WALK_TARGET,
-        MemoryModuleType.ATTACK_TARGET,
-        MemoryModuleType.NEAREST_VISIBLE_LIVING_ENTITIES,
-        MemoryModuleType.NEAREST_VISIBLE_WANTED_ITEM,
-        MemoryModuleType.HURT_BY,
-        MemoryModuleType.ATTACK_COOLING_DOWN,
-        MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE,
-    )
-
-    private val sensorTypes = listOf(
-        SensorType.NEAREST_LIVING_ENTITIES,
-        SensorType.NEAREST_PLAYERS,
-        SensorType.HURT_BY,
-        SensorType.NEAREST_ITEMS,
-    )
-
-    val defaultSchedule = Quaedam.schedule.register("projected_person_default") {
-        ScheduleBuilder(Schedule()).changeActivityAt(10, Activity.IDLE)
-            .changeActivityAt(10, Activity.IDLE)
-            .changeActivityAt(2000, Activity.WORK)
-            .changeActivityAt(7300, Activity.IDLE)
-            .changeActivityAt(9000, Activity.WORK)
-            .changeActivityAt(10700, Activity.IDLE)
-            .changeActivityAt(11000, Activity.PLAY)
-            .changeActivityAt(11500, Activity.IDLE)
-            .changeActivityAt(12000, Activity.REST)
-            .build()
-    }
-
-    val babySchedule = Quaedam.schedule.register("projected_person_baby") {
-        ScheduleBuilder(Schedule()).changeActivityAt(10, Activity.IDLE)
-            .changeActivityAt(10, Activity.IDLE)
-            .changeActivityAt(3200, Activity.PLAY)
-            .changeActivityAt(7000, Activity.IDLE)
-            .changeActivityAt(9000, Activity.PLAY)
-            .changeActivityAt(11000, Activity.REST)
-            .build()
-    }
-
-    fun provider(): Brain.Provider<out ProjectedPersonEntity> = Brain.provider(memoryTypes, sensorTypes)
-
-    fun initBrain(entity: ProjectedPersonEntity, brain: Brain<ProjectedPersonEntity>) {
-        initCoreActivity(brain)
-        initIdleActivity(brain)
-        initPlayActivity(brain)
-        initWorkActivity(brain)
-        initRestActivity(brain)
-        brain.setCoreActivities(setOf(Activity.CORE))
-        brain.setDefaultActivity(Activity.IDLE)
-        updateSchedule(entity, brain, baby = false)
-    }
-
-    fun updateSchedule(entity: ProjectedPersonEntity, brain: Brain<ProjectedPersonEntity>, baby: Boolean) {
-        if (baby) {
-            brain.schedule = babySchedule.get()
-        } else {
-            brain.schedule = defaultSchedule.get()
-        }
-        brain.updateActivityFromSchedule(entity.level().dayTime, entity.level().gameTime)
-    }
-
-    fun updateSchedule(entity: ProjectedPersonEntity) = updateSchedule(entity, entity.brain, entity.shape.baby)
-
-    private fun initCoreActivity(brain: Brain<ProjectedPersonEntity>) {
-        brain.addActivity(
-            Activity.CORE, ImmutableList.of(
-                0 weight Swim(0.8f),
-                0 weight InteractWithDoor.create(),
-                0 weight LookAtTargetSink(40, 70),
-                0 weight MoveToTargetSink(),
-                0 weight WakeUp.create(),
-                3 weight GoToWantedItem.create(1.2f, false, 7),
-            )
-        )
-    }
-
-    private fun initIdleActivity(brain: Brain<ProjectedPersonEntity>) {
-        brain.addActivity(
-            Activity.IDLE, ImmutableList.of(
-                3 weight createStrollBehavior(),
-                99 weight UpdateActivityFromSchedule.create(),
-            )
-        )
-    }
-
-    private fun initPlayActivity(brain: Brain<ProjectedPersonEntity>) {
-        brain.addActivity(
-            Activity.PLAY, ImmutableList.of(
-                3 weight GoToWantedItem.create(1.75f, true, 32),
-                5 weight JumpOnBed(1.0f),
-                5 weight createStrollBehavior(),
-                99 weight UpdateActivityFromSchedule.create(),
-            )
-        )
-    }
-
-    private fun initWorkActivity(brain: Brain<ProjectedPersonEntity>) {
-        brain.addActivity(
-            Activity.WORK, ImmutableList.of(
-                3 weight createStrollBehavior(),
-                99 weight UpdateActivityFromSchedule.create(),
-            )
-        )
-    }
-
-    private fun initRestActivity(brain: Brain<ProjectedPersonEntity>) {
-        brain.addActivity(
-            Activity.REST, ImmutableList.of(
-                3 weight createStrollBehavior(),
-                99 weight UpdateActivityFromSchedule.create(),
-            )
-        )
-    }
-
-    private fun createStrollBehavior() = RunOne(
-        listOf(
-            2 weightR RandomStroll.stroll(1.0f),
-            2 weightR SetWalkTargetFromLookTarget.create(1.0f, 5),
-            1 weightR DoNothing(30, 60)
-        )
-    )
-
-}

common/src/main/kotlin/quaedam/projection/swarm/ProjectedPersonEntity.kt

@@ -4,6 +4,7 @@ import com.mojang.serialization.Dynamic
 import dev.architectury.platform.Platform
 import dev.architectury.registry.level.entity.EntityAttributeRegistry
 import net.fabricmc.api.EnvType
+import net.minecraft.core.BlockPos
 import net.minecraft.nbt.CompoundTag
 import net.minecraft.network.chat.Component
 import net.minecraft.network.protocol.game.DebugPackets
@@ -11,10 +12,12 @@ import net.minecraft.network.syncher.EntityDataAccessor
 import net.minecraft.network.syncher.EntityDataSerializers
 import net.minecraft.network.syncher.SynchedEntityData
 import net.minecraft.server.level.ServerLevel
+import net.minecraft.sounds.SoundEvent
 import net.minecraft.world.DifficultyInstance
 import net.minecraft.world.SimpleContainer
 import net.minecraft.world.entity.*
 import net.minecraft.world.entity.ai.Brain
+import net.minecraft.world.entity.ai.attributes.AttributeModifier
 import net.minecraft.world.entity.ai.attributes.AttributeSupplier
 import net.minecraft.world.entity.ai.attributes.Attributes
 import net.minecraft.world.entity.ai.memory.MemoryModuleType
@@ -23,8 +26,12 @@ import net.minecraft.world.entity.npc.InventoryCarrier
 import net.minecraft.world.level.Level
 import net.minecraft.world.level.ServerLevelAccessor
 import quaedam.Quaedam
+import quaedam.misc.causality.CausalityAnchor
+import quaedam.projection.misc.SoundProjection
+import quaedam.projection.swarm.ai.ProjectedPersonAI
+import quaedam.projection.swarm.ai.ProjectedPersonNavigation
 import quaedam.projector.Projector
-import kotlin.jvm.optionals.getOrNull
+import kotlin.random.Random
 
 class ProjectedPersonEntity(entityType: EntityType<out PathfinderMob>, level: Level) : PathfinderMob(entityType, level),
     InventoryCarrier {
@@ -37,6 +44,7 @@ class ProjectedPersonEntity(entityType: EntityType<out PathfinderMob>, level: Le
 
         const val BOUNDING_WIDTH = 0.6f
         const val BOUNDING_HEIGHT = 1.8f
+        const val INV_DIFF_NAME = "quaedam:Random Individual Differences"
 
         val entity = Quaedam.entities.register(ID) {
             EntityType.Builder.of(::ProjectedPersonEntity, MobCategory.CREATURE).canSpawnFarFromPlayer()
@@ -46,20 +54,28 @@ class ProjectedPersonEntity(entityType: EntityType<out PathfinderMob>, level: Le
         val dataShape =
             SynchedEntityData.defineId(ProjectedPersonEntity::class.java, EntityDataSerializers.COMPOUND_TAG)
 
+        const val SOUND_NOISE_ID = "entity.projected_person.noise"
+        val soundNoise = Quaedam.soundEvents.register(SOUND_NOISE_ID) {
+            SoundEvent.createVariableRangeEvent(Quaedam.resource(SOUND_NOISE_ID))
+        }!!
+
         init {
-            EntityAttributeRegistry.register(entity, ::createAttributes)
+            Quaedam.lateinit += { EntityAttributeRegistry.register(entity, ::createAttributes) }
             if (Platform.getEnv() == EnvType.CLIENT) ProjectedPersonRenderer
             ProjectedPersonShape
             ProjectedPersonAI
         }
 
         private fun createAttributes(): AttributeSupplier.Builder =
-            Mob.createMobAttributes().add(Attributes.ATTACK_DAMAGE, 1.5)
-                .add(Attributes.MOVEMENT_SPEED, 0.2)
+            Mob.createMobAttributes().add(Attributes.ATTACK_DAMAGE, 1.5).add(Attributes.MOVEMENT_SPEED, 0.2)
                 .add(Attributes.ATTACK_SPEED)
 
     }
 
+    init {
+        setCanPickUpLoot(true)
+    }
+
     override fun finalizeSpawn(
         serverLevelAccessor: ServerLevelAccessor,
         difficultyInstance: DifficultyInstance,
@@ -67,7 +83,38 @@ class ProjectedPersonEntity(entityType: EntityType<out PathfinderMob>, level: Le
         spawnGroupData: SpawnGroupData?,
         compoundTag: CompoundTag?
     ): SpawnGroupData? {
-        shape = ProjectedPersonShape.create(serverLevelAccessor.random.nextLong())
+        val rand = Random(serverLevelAccessor.random.nextLong())
+        // random shape
+        shape = ProjectedPersonShape.create(rand.nextLong())
+        // random attributes
+        getAttribute(Attributes.MOVEMENT_SPEED)!!.addPermanentModifier(
+            AttributeModifier(
+                INV_DIFF_NAME,
+                rand.nextFloat() * 0.1,
+                AttributeModifier.Operation.ADDITION
+            )
+        )
+        getAttribute(Attributes.ATTACK_DAMAGE)!!.addPermanentModifier(
+            AttributeModifier(
+                INV_DIFF_NAME,
+                rand.nextFloat() * 1.5,
+                AttributeModifier.Operation.ADDITION
+            )
+        )
+        getAttribute(Attributes.ATTACK_SPEED)!!.addPermanentModifier(
+            AttributeModifier(
+                INV_DIFF_NAME,
+                rand.nextFloat() * -2.0,
+                AttributeModifier.Operation.ADDITION
+            )
+        )
+        getAttribute(Attributes.MAX_HEALTH)!!.addPermanentModifier(
+            AttributeModifier(
+                INV_DIFF_NAME,
+                rand.nextFloat() * 5.0,
+                AttributeModifier.Operation.ADDITION
+            )
+        )
         return super.finalizeSpawn(serverLevelAccessor, difficultyInstance, mobSpawnType, spawnGroupData, compoundTag)
     }
 
@@ -104,6 +151,7 @@ class ProjectedPersonEntity(entityType: EntityType<out PathfinderMob>, level: Le
         super.readAdditionalSaveData(tag)
         shapeTag = tag.getCompound(KEY_ENTITY_SHAPE)
         readInventoryFromTag(tag)
+        setCanPickUpLoot(true)
     }
 
     override fun shouldShowName() = true
@@ -111,14 +159,17 @@ class ProjectedPersonEntity(entityType: EntityType<out PathfinderMob>, level: Le
     override fun getTypeName(): Component =
         shape.name.takeIf { it.isNotEmpty() }?.let { Component.literal(it) } ?: super.getTypeName()
 
-    override fun getNameTagOffsetY() = super.getNameTagOffsetY() - (BOUNDING_HEIGHT * (1.3f - shape.scaleY))
+    override fun getNameTagOffsetY() = super.getNameTagOffsetY() - (bbHeight * (1f - shape.scaleY))
 
     override fun createNavigation(level: Level) = ProjectedPersonNavigation(this, level)
 
     override fun tick() {
         super.tick()
         if (tickCount % 20 == 0) {
-            if (!checkProjectionEffect()) remove(RemovalReason.KILLED)
+            if (!checkProjectionEffect() && !CausalityAnchor.checkEffect(level(), blockPosition())) {
+                dropEquipment()
+                remove(RemovalReason.KILLED)
+            }
         }
     }
 
@@ -126,8 +177,12 @@ class ProjectedPersonEntity(entityType: EntityType<out PathfinderMob>, level: Le
         Projector.findNearbyProjections(level(), blockPosition(), SwarmProjection.effect.get()).isNotEmpty()
 
     override fun checkDespawn() {
-        super.checkDespawn()
-        if (!checkProjectionEffect()) discard()
+        // no despawn
+        // super.checkDespawn()
+        if (!checkProjectionEffect() && !CausalityAnchor.checkEffect(level(), blockPosition())) {
+            dropEquipment()
+            remove(RemovalReason.KILLED)
+        }
     }
 
     private val inventory = SimpleContainer(10)
@@ -163,4 +218,48 @@ class ProjectedPersonEntity(entityType: EntityType<out PathfinderMob>, level: Le
 
     override fun isBaby() = shape.baby
 
+    override fun startSleeping(blockPos: BlockPos) {
+        super.startSleeping(blockPos)
+        brain.eraseMemory(MemoryModuleType.WALK_TARGET)
+        brain.eraseMemory(MemoryModuleType.LOOK_TARGET)
+        brain.eraseMemory(MemoryModuleType.NEAREST_BED)
+        brain.eraseMemory(MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE)
+    }
+
+    override fun stopSleeping() {
+        super.stopSleeping()
+        brain.setMemory(MemoryModuleType.LAST_WOKEN, level().gameTime)
+        brain.eraseMemory(MemoryModuleType.HOME)
+    }
+
+    override fun dropEquipment() {
+        super.dropEquipment()
+        inventory.removeAllItems().forEach(::spawnAtLocation)
+    }
+
+    fun findNearbySoundProjection() =
+        Projector.findNearbyProjections(level(), blockPosition(), SoundProjection.effect.get())
+
+    override fun isSilent() =
+        super.isSilent() && findNearbySoundProjection().isEmpty()
+
+    override fun getAmbientSound(): SoundEvent? {
+        if (findNearbySoundProjection().isNotEmpty()) {
+            // sound projection available
+            return soundNoise.get()
+        }
+        return null
+    }
+
+    override fun getSoundVolume() =
+        super.getSoundVolume() * (random.nextFloat() * 1.1f + 0.4f) *
+                findNearbySoundProjection().fold(1.0f) { v, p -> v * p.volume }
+
+    override fun getVoicePitch() = super.getVoicePitch() * (random.nextFloat() * 0.55f + 0.7f)
+
+    override fun getAmbientSoundInterval() =
+        80 - random.nextInt((findNearbySoundProjection().firstOrNull()?.rate ?: 1) * 5)
+
+    override fun isEffectiveAi() = super.isEffectiveAi() && checkProjectionEffect()
+
 }

common/src/main/kotlin/quaedam/projection/swarm/ProjectedPersonRenderer.kt

@@ -10,6 +10,7 @@ import net.minecraft.client.renderer.entity.EntityRendererProvider
 import net.minecraft.client.renderer.entity.MobRenderer
 import net.minecraft.client.renderer.entity.layers.CustomHeadLayer
 import net.minecraft.client.renderer.entity.layers.ItemInHandLayer
+import quaedam.Quaedam
 
 @Environment(EnvType.CLIENT)
 class ProjectedPersonRenderer(context: EntityRendererProvider.Context) :
@@ -21,7 +22,12 @@ class ProjectedPersonRenderer(context: EntityRendererProvider.Context) :
 
     companion object {
         init {
-            EntityRendererRegistry.register(ProjectedPersonEntity.entity, ::ProjectedPersonRenderer)
+            Quaedam.lateinit += {
+                EntityRendererRegistry.register(
+                    ProjectedPersonEntity.entity,
+                    ::ProjectedPersonRenderer
+                )
+            }
         }
     }
 

common/src/main/kotlin/quaedam/projection/swarm/ProjectedPersonShape.kt

@@ -72,7 +72,7 @@ data class ProjectedPersonShape(
 
     object Names {
 
-        val id = ResourceLocation("quaedam", "projected-person-names")
+        val id = Quaedam.resource("projected-person-names")
 
         var names = emptySet<String>()
 
@@ -109,7 +109,7 @@ data class ProjectedPersonShape(
 
     object Skins {
 
-        val id = ResourceLocation("quaedam", "skins")
+        val id = Quaedam.resource("skins")
 
         var skins = emptyList<ResourceLocation>()
 

common/src/main/kotlin/quaedam/projection/swarm/SwarmProjection.kt

@@ -4,6 +4,7 @@ import net.minecraft.world.item.BlockItem
 import net.minecraft.world.item.Item
 import quaedam.Quaedam
 import quaedam.projection.ProjectionEffectType
+import quaedam.projection.SimpleProjectionEntity
 
 object SwarmProjection {
 
@@ -23,6 +24,10 @@ object SwarmProjection {
         ProjectionEffectType { SwarmProjectionEffect() }
     }!!
 
+    val blockEntity = Quaedam.blockEntities.register(ID) {
+        SimpleProjectionEntity.createBlockEntityType(block, ::SwarmProjectionEffect)
+    }!!
+
     init {
         ProjectedPersonEntity
     }

common/src/main/kotlin/quaedam/projection/swarm/SwarmProjectionBlock.kt

@@ -1,16 +1,9 @@
 package quaedam.projection.swarm
 
-import net.minecraft.core.BlockPos
-import net.minecraft.server.level.ServerLevel
-import net.minecraft.world.level.block.state.BlockState
-import quaedam.projection.ProjectionBlock
+import quaedam.projection.EntityProjectionBlock
 
-object SwarmProjectionBlock : ProjectionBlock<SwarmProjectionEffect>() {
+object SwarmProjectionBlock : EntityProjectionBlock<SwarmProjectionEffect>() {
 
-    override fun createProjectionEffect(
-        level: ServerLevel,
-        state: BlockState,
-        pos: BlockPos
-    ) = SwarmProjectionEffect()
+    override val blockEntity = SwarmProjection.blockEntity
 
 }

common/src/main/kotlin/quaedam/projection/swarm/SwarmProjectionEffect.kt

@@ -3,14 +3,24 @@ package quaedam.projection.swarm
 import net.minecraft.core.BlockPos
 import net.minecraft.nbt.CompoundTag
 import net.minecraft.server.level.ServerLevel
+import net.minecraft.world.entity.MobSpawnType
+import net.minecraft.world.level.levelgen.Heightmap
+import quaedam.config.QuaedamConfig
 import quaedam.projection.ProjectionEffect
+import quaedam.projector.Projector
+import quaedam.projector.ProjectorBlockEntity
+import quaedam.shell.ProjectionEffectShell
+import quaedam.shell.buildProjectionEffectShell
+import kotlin.math.min
 
 data class SwarmProjectionEffect(
-    var maxCount: Int = 10,
-) : ProjectionEffect() {
+    var maxCount: Int = 180,
+) : ProjectionEffect(), ProjectionEffectShell.Provider {
 
     companion object {
         const val TAG_MAX_COUNT = "MaxCount"
+
+        val maxMaxCount get() = QuaedamConfig.current.valuesInt["projection.swarm.max_max_count"] ?: 250
     }
 
     override val type
@@ -20,11 +30,40 @@ data class SwarmProjectionEffect(
         tag.putInt(TAG_MAX_COUNT, maxCount)
     }
 
-    override fun fromNbt(tag: CompoundTag) {
+    override fun fromNbt(tag: CompoundTag, trusted: Boolean) {
         maxCount = tag.getInt(TAG_MAX_COUNT)
+        if (!trusted) {
+            maxCount = min(maxCount, maxMaxCount)
+        }
     }
 
     override fun randomTick(level: ServerLevel, pos: BlockPos) {
+        val projector = level.getBlockEntity(pos) as ProjectorBlockEntity
+        val entities = level.getEntitiesOfClass(ProjectedPersonEntity::class.java, projector.effectAreaAABB).size
+        if (entities < maxCount) {
+            val area = projector.effectArea
+            for (i in 0..(min(level.random.nextInt(maxCount - entities), 6))) {
+                var spawnPos = BlockPos(
+                    level.random.nextInt(area.minX(), area.maxX()),
+                    area.minY(),
+                    level.random.nextInt(area.minZ(), area.maxZ()),
+                )
+                spawnPos = spawnPos.atY(level.getHeight(Heightmap.Types.WORLD_SURFACE, spawnPos.x, spawnPos.z))
+                if (Projector.findNearbyProjections(level, spawnPos, SwarmProjection.effect.get()).isEmpty())
+                    continue
+                val belowState = level.getBlockState(spawnPos.below())
+                val state = level.getBlockState(spawnPos)
+                if (belowState.isAir || !belowState.fluidState.isEmpty || !belowState.canOcclude())
+                    continue
+                if (!state.fluidState.isEmpty)
+                    continue
+                ProjectedPersonEntity.entity.get().spawn(level, spawnPos, MobSpawnType.TRIGGERED)
+            }
+        }
+    }
+
+    override fun createShell() = buildProjectionEffectShell(this) {
+        intSlider("quaedam.shell.swarm.max_count", ::maxCount, 0..maxMaxCount step 5)
     }
 
 }

common/src/main/kotlin/quaedam/projection/swarm/ai/AmusementAI.kt

@@ -0,0 +1,58 @@
+package quaedam.projection.swarm.ai
+
+import net.minecraft.core.GlobalPos
+import net.minecraft.world.entity.ai.behavior.AcquirePoi
+import net.minecraft.world.entity.ai.behavior.StrollAroundPoi
+import net.minecraft.world.entity.ai.behavior.StrollToPoi
+import net.minecraft.world.entity.ai.memory.MemoryModuleType
+import net.minecraft.world.entity.ai.village.poi.PoiType
+import net.minecraft.world.entity.ai.village.poi.PoiTypes
+import net.minecraft.world.level.block.Blocks
+import quaedam.Quaedam
+import quaedam.projection.music.SmartInstrumentBlock
+import java.util.*
+
+object AmusementAI {
+
+    const val ID = "amusement"
+
+    val poiType = Quaedam.poiTypes.register(ID) {
+        PoiType(
+            setOf(
+                Blocks.NOTE_BLOCK,
+                SmartInstrumentBlock,
+                Blocks.HONEY_BLOCK,
+                Blocks.TARGET,
+            ).flatMap { it.stateDefinition.possibleStates }.toSet(),
+            16, 10
+        )
+    }!!
+
+    val poiTypes by lazy {
+        setOf(
+            poiType.key,
+            PoiTypes.LIBRARIAN,
+            PoiTypes.MEETING,
+        )
+    }
+
+    val memory = Quaedam.memoryTypes.register(ID) {
+        MemoryModuleType(Optional.of(GlobalPos.CODEC))
+    }!!
+
+    fun createAcquirePoi() =
+        AcquirePoi.create({ it.`is` { key -> key in poiTypes } }, memory.get(), false, Optional.empty())
+
+    fun createStrollToPoi() =
+        StrollToPoi.create(memory.get(), 0.4f, 7, 15)
+
+    fun createStrollToPoiBaby() =
+        StrollToPoi.create(memory.get(), 0.7f, 5, 10)
+
+    fun createStrollAroundPoi() =
+        StrollAroundPoi.create(memory.get(), 0.4f, 10)
+
+    fun createStrollAroundPoiBaby() =
+        StrollAroundPoi.create(memory.get(), 0.55f, 8)
+
+}

common/src/main/kotlin/quaedam/projection/swarm/ai/BedInChunkSensor.kt

@@ -0,0 +1,46 @@
+package quaedam.projection.swarm.ai
+
+import net.minecraft.core.GlobalPos
+import net.minecraft.server.level.ServerLevel
+import net.minecraft.world.entity.LivingEntity
+import net.minecraft.world.entity.ai.memory.MemoryModuleType
+import net.minecraft.world.entity.ai.memory.MemoryStatus
+import net.minecraft.world.entity.ai.sensing.Sensor
+import net.minecraft.world.entity.ai.sensing.SensorType
+import net.minecraft.world.level.block.BedBlock
+import net.minecraft.world.level.block.entity.BedBlockEntity
+import net.minecraft.world.level.block.state.properties.BedPart
+import quaedam.Quaedam
+
+class BedInChunkSensor : Sensor<LivingEntity>() {
+
+    companion object {
+
+        const val ID = "bed_in_chunk"
+
+        val sensor = Quaedam.sensors.register(ID) {
+            SensorType(::BedInChunkSensor)
+        }
+
+    }
+
+    override fun requires() = setOf(MemoryModuleType.NEAREST_BED)
+
+    override fun doTick(level: ServerLevel, entity: LivingEntity) {
+        if (entity.tickCount and 0b11111 == 0 && !entity.isSleeping) { // 32gt
+            level.getChunkAt(entity.blockPosition()).blockEntities
+                .filterValues { it is BedBlockEntity }
+                .keys
+                .filter { level.getBlockState(it).getValue(BedBlock.PART) == BedPart.HEAD }
+                .filter { !level.getBlockState(it).getValue(BedBlock.OCCUPIED) }
+                .minByOrNull { it.distManhattan(entity.blockPosition()) }
+                ?.also { entity.brain.setMemory(MemoryModuleType.NEAREST_BED, it) }
+                ?.also {
+                    if (entity.brain.checkMemory(MemoryModuleType.HOME, MemoryStatus.REGISTERED)) {
+                        entity.brain.setMemory(MemoryModuleType.HOME, GlobalPos.of(level.dimension(), it))
+                    }
+                }
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/projection/swarm/ai/ExchangeItem.kt

@@ -0,0 +1,132 @@
+package quaedam.projection.swarm.ai
+
+import net.minecraft.core.BlockPos
+import net.minecraft.server.level.ServerLevel
+import net.minecraft.sounds.SoundEvents
+import net.minecraft.world.Container
+import net.minecraft.world.entity.Mob
+import net.minecraft.world.entity.ai.behavior.Behavior
+import net.minecraft.world.entity.ai.memory.MemoryModuleType
+import net.minecraft.world.entity.ai.memory.MemoryStatus
+import net.minecraft.world.entity.ai.memory.WalkTarget
+import net.minecraft.world.entity.npc.InventoryCarrier
+import net.minecraft.world.item.ItemStack
+import net.minecraft.world.level.block.entity.BaseContainerBlockEntity
+import net.minecraft.world.level.block.entity.ChestBlockEntity
+import kotlin.math.min
+
+class ExchangeItem<E> : Behavior<E>(
+    mapOf(
+        MemoryModuleType.WALK_TARGET to MemoryStatus.VALUE_ABSENT,
+        NearestVisibleContainer.memory.get() to MemoryStatus.VALUE_PRESENT,
+    ), 5 * 20, 12 * 20
+) where E : Mob, E : InventoryCarrier {
+
+    private var target: BlockPos? = null
+    private var closeAt: Long? = null
+
+    override fun start(level: ServerLevel, entity: E, l: Long) {
+        target = entity.brain.getMemory(NearestVisibleContainer.memory.get()).get()
+        closeAt = null
+        entity.brain.setMemory(MemoryModuleType.WALK_TARGET, WalkTarget(target!!, 1.0f, 2))
+        entity.brain.eraseMemory(MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE)
+    }
+
+    override fun canStillUse(level: ServerLevel, owner: E, gameTime: Long) =
+        owner.brain.getMemory(MemoryModuleType.WALK_TARGET).isPresent
+                || owner.brain.getMemory(MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE).isEmpty
+                || (closeAt != null && closeAt!! < gameTime)
+
+    override fun tick(level: ServerLevel, owner: E, gameTime: Long) {
+        if (closeAt == null) {
+            if (owner.brain.getMemory(MemoryModuleType.WALK_TARGET).isEmpty) {
+                // reached
+                val chest = level.getBlockEntity(target!!) ?: return
+                if (chest !is BaseContainerBlockEntity)
+                    return
+                if (chest is ChestBlockEntity) {
+                    ChestBlockEntity.playSound(level, target!!, level.getBlockState(target!!), SoundEvents.CHEST_OPEN)
+                }
+                if (chest.isEmpty && level.random.nextBoolean()) {
+                    closeAt = gameTime + 7
+                } else {
+                    closeAt = gameTime + 10 + level.random.nextInt(100)
+                    exchangeItems(level, owner)
+                }
+            }
+        }
+    }
+
+    override fun stop(level: ServerLevel, owner: E, gameTime: Long) {
+        owner.brain.eraseMemory(MemoryModuleType.WALK_TARGET)
+        owner.brain.eraseMemory(MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE)
+        if (closeAt != null) {
+            // opened
+            val chest = level.getBlockEntity(target!!) ?: return
+            if (chest is ChestBlockEntity) {
+                ChestBlockEntity.playSound(level, target!!, level.getBlockState(target!!), SoundEvents.CHEST_CLOSE)
+            }
+        }
+    }
+
+    private fun exchangeItems(level: ServerLevel, entity: E) {
+        val container = level.getBlockEntity(target!!) ?: return
+        if (container !is Container)
+            return
+        val inventory = entity.inventory
+        for (i in 1..10) {
+            val maxCount = 1 + level.random.nextInt(16)
+            if (level.random.nextBoolean()) {
+                // take
+                val slot = level.random.nextInt(container.containerSize)
+                val item = container.getItem(slot)
+                if (!item.isEmpty) {
+                    val takeCount = min(item.count, maxCount)
+                    val takeItem = item.copyWithCount(takeCount)
+                    if (entity.canHoldItem(takeItem)) {
+                        val remaining = inventory.addItem(/*entity.equipItemIfPossible(takeItem)*/ takeItem)
+                        val actualCount = takeCount - remaining.count
+                        item.shrink(actualCount)
+                        container.setItem(slot, item)
+                    }
+                }
+            } else {
+                // put
+                val slot = level.random.nextInt(inventory.containerSize)
+                val item = inventory.getItem(slot)
+                if (!item.isEmpty) {
+                    val takeCount = min(item.count, maxCount)
+                    val takeItem = item.copyWithCount(takeCount)
+                    for (target in 0 until container.containerSize) {
+                        val targetItem = container.getItem(target)
+                        if (ItemStack.isSameItemSameTags(targetItem, takeItem)) {
+                            val resultCount = min(targetItem.count + takeItem.count, item.maxStackSize)
+                            val putCount = resultCount - targetItem.count
+                            if (putCount != 0) {
+                                targetItem.grow(putCount)
+                                container.setItem(target, targetItem)
+                                takeItem.shrink(putCount)
+                                if (takeItem.isEmpty) break
+                            }
+                        }
+                    }
+                    if (!takeItem.isEmpty) {
+                        for (target in 0 until container.containerSize) {
+                            val targetItem = container.getItem(target)
+                            if (targetItem.isEmpty) {
+                                container.setItem(target, takeItem.copyAndClear())
+                                break
+                            }
+                        }
+                    }
+                    val putCount = takeCount - takeItem.count
+                    item.shrink(putCount)
+                    inventory.setItem(slot, item)
+                }
+            }
+        }
+        container.setChanged()
+        inventory.setChanged()
+    }
+
+}

common/src/main/kotlin/quaedam/projection/swarm/ai/LostItem.kt

@@ -0,0 +1,31 @@
+package quaedam.projection.swarm.ai
+
+import net.minecraft.world.entity.LivingEntity
+import net.minecraft.world.entity.ai.behavior.OneShot
+import net.minecraft.world.entity.ai.behavior.declarative.BehaviorBuilder
+import net.minecraft.world.entity.ai.behavior.declarative.Trigger
+import net.minecraft.world.entity.item.ItemEntity
+import net.minecraft.world.entity.npc.InventoryCarrier
+import net.minecraft.world.entity.schedule.Activity
+
+@Suppress("FunctionName")
+fun <E> LostItem(chance: Int): OneShot<E>
+        where E : LivingEntity, E : InventoryCarrier = BehaviorBuilder.create { instance ->
+    instance.point(Trigger { level, entity: E, l: Long ->
+        if (entity.brain.isActive(Activity.REST)) return@Trigger false
+        if (level.random.nextInt(chance) != 0) return@Trigger false
+        val inventory = entity.inventory
+        val item = inventory.getItem(level.random.nextInt(inventory.containerSize))
+        if (!item.isEmpty) {
+            val count = level.random.nextInt(item.count)
+            item.shrink(count)
+            inventory.setChanged()
+            val itemEntity = ItemEntity(level, entity.x, entity.y + 0.25, entity.z, item.copyWithCount(count))
+            itemEntity.setDefaultPickUpDelay()
+            level.addFreshEntity(itemEntity)
+            return@Trigger true
+        } else {
+            return@Trigger false
+        }
+    })
+}

common/src/main/kotlin/quaedam/projection/swarm/ai/NearestVisibleContainer.kt

@@ -0,0 +1,44 @@
+package quaedam.projection.swarm.ai
+
+import net.minecraft.core.BlockPos
+import net.minecraft.server.level.ServerLevel
+import net.minecraft.world.entity.LivingEntity
+import net.minecraft.world.entity.ai.memory.MemoryModuleType
+import net.minecraft.world.entity.ai.sensing.Sensor
+import net.minecraft.world.entity.ai.sensing.SensorType
+import net.minecraft.world.level.block.entity.BaseContainerBlockEntity
+import quaedam.Quaedam
+import quaedam.utils.getChunksNearby
+import java.util.*
+import kotlin.random.Random
+
+class NearestVisibleContainer : Sensor<LivingEntity>() {
+
+    companion object {
+
+        const val ID = "nearest_visible_container"
+
+        val sensor = Quaedam.sensors.register(ID) {
+            SensorType(::NearestVisibleContainer)
+        }!!
+
+        val memory = Quaedam.memoryTypes.register(ID) {
+            MemoryModuleType(Optional.of(BlockPos.CODEC))
+        }!!
+
+    }
+
+    override fun requires() = setOf(memory.get())
+
+    override fun doTick(level: ServerLevel, entity: LivingEntity) {
+        if (entity.tickCount and 0b11111 == 0) { // 32gt
+            val pos = level.getChunksNearby(entity.blockPosition(), 1)
+                .flatMap { it.blockEntities.filterValues { be -> be is BaseContainerBlockEntity }.keys }
+                .sortedBy { it.distManhattan(entity.blockPosition()) / 5 }
+                .shuffled(Random(System.currentTimeMillis() / 10000))
+                .firstOrNull()
+            entity.brain.setMemory(memory.get(), pos)
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/projection/swarm/ai/ProjectedPersonAI.kt

@@ -0,0 +1,208 @@
+package quaedam.projection.swarm.ai
+
+import com.google.common.collect.ImmutableList
+import net.minecraft.core.registries.Registries
+import net.minecraft.tags.TagKey
+import net.minecraft.world.entity.LivingEntity
+import net.minecraft.world.entity.ai.Brain
+import net.minecraft.world.entity.ai.behavior.*
+import net.minecraft.world.entity.ai.memory.MemoryModuleType
+import net.minecraft.world.entity.ai.memory.MemoryStatus
+import net.minecraft.world.entity.ai.memory.NearestVisibleLivingEntities
+import net.minecraft.world.entity.ai.sensing.SensorType
+import net.minecraft.world.entity.monster.Monster
+import net.minecraft.world.entity.schedule.Activity
+import net.minecraft.world.entity.schedule.Schedule
+import net.minecraft.world.entity.schedule.ScheduleBuilder
+import quaedam.Quaedam
+import quaedam.projection.swarm.ProjectedPersonEntity
+import quaedam.utils.weight
+import quaedam.utils.weightR
+import java.util.*
+import kotlin.jvm.optionals.getOrNull
+
+object ProjectedPersonAI {
+
+    val tagEnemy = TagKey.create(Registries.ENTITY_TYPE, Quaedam.resource("projected_person/enemy"))
+    val tagNoAttack = TagKey.create(Registries.ENTITY_TYPE, Quaedam.resource("projected_person/no_attack"))
+
+    val defaultSchedule = Quaedam.schedules.register("projected_person_default") {
+        ScheduleBuilder(Schedule()).changeActivityAt(10, Activity.IDLE)
+            .changeActivityAt(10, Activity.IDLE)
+            .changeActivityAt(900, Activity.WORK)
+            .changeActivityAt(6300, Activity.IDLE)
+            .changeActivityAt(9000, Activity.WORK)
+            .changeActivityAt(10700, Activity.IDLE)
+            .changeActivityAt(11000, Activity.PLAY)
+            .changeActivityAt(11500, Activity.IDLE)
+            .changeActivityAt(12000, Activity.REST)
+            .build()
+    }
+
+    val babySchedule = Quaedam.schedules.register("projected_person_baby") {
+        ScheduleBuilder(Schedule()).changeActivityAt(10, Activity.IDLE)
+            .changeActivityAt(10, Activity.IDLE)
+            .changeActivityAt(3200, Activity.PLAY)
+            .changeActivityAt(7000, Activity.IDLE)
+            .changeActivityAt(9000, Activity.PLAY)
+            .changeActivityAt(11000, Activity.REST)
+            .build()
+    }
+
+    init {
+        BedInChunkSensor
+        AmusementAI
+        WorkPoiAI
+        NearestVisibleContainer
+    }
+
+    private val memoryTypes by lazy {
+        listOf(
+            MemoryModuleType.PATH,
+            MemoryModuleType.LOOK_TARGET,
+            MemoryModuleType.WALK_TARGET,
+            MemoryModuleType.ATTACK_TARGET,
+            MemoryModuleType.NEAREST_VISIBLE_LIVING_ENTITIES,
+            MemoryModuleType.NEAREST_VISIBLE_WANTED_ITEM,
+            MemoryModuleType.HURT_BY,
+            MemoryModuleType.ATTACK_COOLING_DOWN,
+            MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE,
+            MemoryModuleType.HOME,
+            MemoryModuleType.LAST_WOKEN,
+            MemoryModuleType.NEAREST_BED,
+            NearestVisibleContainer.memory.get(),
+        )
+    }
+
+    private val sensorTypes by lazy {
+        listOf(
+            SensorType.NEAREST_LIVING_ENTITIES,
+            SensorType.NEAREST_PLAYERS,
+            SensorType.NEAREST_ITEMS,
+            SensorType.HURT_BY,
+            BedInChunkSensor.sensor.get(),
+            NearestVisibleContainer.sensor.get(),
+        )
+    }
+
+    fun provider(): Brain.Provider<out ProjectedPersonEntity> = Brain.provider(memoryTypes, sensorTypes)
+
+    fun initBrain(entity: ProjectedPersonEntity, brain: Brain<ProjectedPersonEntity>) {
+        initCoreActivity(brain)
+        initIdleActivity(brain)
+        initPlayActivity(brain)
+        initWorkActivity(brain)
+        initRestActivity(brain)
+        brain.setCoreActivities(setOf(Activity.CORE))
+        brain.setDefaultActivity(Activity.IDLE)
+        updateSchedule(entity, brain, baby = false)
+    }
+
+    fun updateSchedule(entity: ProjectedPersonEntity, brain: Brain<ProjectedPersonEntity>, baby: Boolean) {
+        if (baby) {
+            brain.schedule = babySchedule.get()
+        } else {
+            brain.schedule = defaultSchedule.get()
+        }
+        brain.updateActivityFromSchedule(entity.level().dayTime, entity.level().gameTime)
+    }
+
+    fun updateSchedule(entity: ProjectedPersonEntity) = updateSchedule(entity, entity.brain, entity.shape.baby)
+
+    private fun initCoreActivity(brain: Brain<ProjectedPersonEntity>) {
+        brain.addActivity(
+            Activity.CORE, ImmutableList.of(
+                0 weight UpdateActivityFromSchedule.create(),
+                0 weight Swim(0.8f),
+                0 weight WakeUp.create(),
+                0 weight StopAttackingIfTargetInvalid.create(),
+                3 weight LookAtTargetSink(40, 70),
+                3 weight MoveToTargetSink(),
+                3 weight InteractWithDoor.create(),
+                3 weight SetWalkTargetAwayFrom.entity(MemoryModuleType.HURT_BY_ENTITY, 1.2f, 6, false),
+                4 weight MeleeAttack.create(15),
+                5 weight LostItem(400),
+                5 weight StartAttacking.create(::findAttackTarget),
+                5 weight SetWalkTargetFromAttackTargetIfTargetOutOfReach.create(1.1f),
+                10 weight GoToWantedItem.create(1.2f, false, 7),
+            )
+        )
+    }
+
+    private fun initIdleActivity(brain: Brain<ProjectedPersonEntity>) {
+        brain.addActivity(
+            Activity.IDLE, ImmutableList.of(
+                5 weight AmusementAI.createStrollAroundPoi(),
+                7 weight AmusementAI.createStrollToPoi(),
+                9 weight AmusementAI.createAcquirePoi(),
+                10 weight createStrollBehavior(),
+            )
+        )
+    }
+
+    private fun initPlayActivity(brain: Brain<ProjectedPersonEntity>) {
+        brain.addActivity(
+            Activity.PLAY, ImmutableList.of(
+                3 weight GoToWantedItem.create(1.75f, true, 32),
+                5 weight AmusementAI.createStrollAroundPoiBaby(),
+                7 weight AmusementAI.createStrollToPoiBaby(),
+                9 weight AmusementAI.createAcquirePoi(),
+                10 weight JumpOnBed(1.0f),
+                10 weight createStrollBehavior(),
+            )
+        )
+    }
+
+    private fun initWorkActivity(brain: Brain<ProjectedPersonEntity>) {
+        brain.addActivity(
+            Activity.WORK, ImmutableList.of(
+                5 weight ExchangeItem(),
+                7 weight WorkPoiAI.createStrollAroundPoi(),
+                7 weight WorkPoiAI.createStrollToPoi(),
+                10 weight RunOne(
+                    mapOf(),
+                    listOf(
+                        1 weightR createStrollBehavior(),
+                        1 weightR WorkPoiAI.createAcquirePoi(),
+                    )
+                ),
+            )
+        )
+    }
+
+    private fun initRestActivity(brain: Brain<ProjectedPersonEntity>) {
+        brain.addActivity(
+            Activity.REST, ImmutableList.of(
+                0 weight SleepInBed(),
+                3 weight GoToTargetLocation.create(MemoryModuleType.NEAREST_BED, 1, 1.05f),
+                3 weight RunOne(
+                    mapOf(
+                        MemoryModuleType.HOME to MemoryStatus.VALUE_ABSENT
+                    ),
+                    listOf(
+                        1 weightR createStrollBehavior()
+                    )
+                ),
+            )
+        )
+    }
+
+    private fun createStrollBehavior() = RunOne(
+        listOf(
+            2 weightR RandomStroll.stroll(1.0f, 42, 12),
+            2 weightR SetWalkTargetFromLookTarget.create(1.0f, 5),
+            1 weightR DoNothing(30, 60)
+        )
+    )
+
+    private fun findAttackTarget(entity: ProjectedPersonEntity): Optional<out LivingEntity> {
+        val entities = entity.brain.getMemory(MemoryModuleType.NEAREST_VISIBLE_LIVING_ENTITIES).getOrNull()
+            ?: NearestVisibleLivingEntities.empty()
+        return entities.findClosest { target: LivingEntity ->
+            entity.canAttack(target)
+                    && !target.type.`is`(tagNoAttack)
+                    && (target.type.`is`(tagEnemy) || target is Monster)
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/projection/swarm/ai/ProjectedPersonNavigation.kt

@@ -1,15 +1,21 @@
-package quaedam.projection.swarm
+package quaedam.projection.swarm.ai
 
 import net.minecraft.core.BlockPos
 import net.minecraft.world.entity.ai.navigation.GroundPathNavigation
 import net.minecraft.world.level.Level
 import net.minecraft.world.level.pathfinder.Path
+import quaedam.misc.causality.CausalityAnchor
+import quaedam.projection.swarm.ProjectedPersonEntity
+import quaedam.projection.swarm.SwarmProjection
 import quaedam.projector.Projector
 
 class ProjectedPersonNavigation(val entity: ProjectedPersonEntity, level: Level) : GroundPathNavigation(entity, level) {
 
     override fun createPath(set: MutableSet<BlockPos>, i: Int, bl: Boolean, j: Int, f: Float): Path? {
-        if (set.any { Projector.findNearbyProjections(level, it, SwarmProjection.effect.get()).isEmpty() }) {
+        if (set.any {
+                Projector.findNearbyProjections(level, it, SwarmProjection.effect.get())
+                    .isEmpty() && !CausalityAnchor.checkEffect(level, it)
+            }) {
             return null
         }
         return super.createPath(set, i, bl, j, f)

common/src/main/kotlin/quaedam/projection/swarm/ai/WorkPoiAI.kt

@@ -0,0 +1,49 @@
+package quaedam.projection.swarm.ai
+
+import net.minecraft.core.GlobalPos
+import net.minecraft.world.entity.ai.behavior.AcquirePoi
+import net.minecraft.world.entity.ai.behavior.StrollAroundPoi
+import net.minecraft.world.entity.ai.behavior.StrollToPoi
+import net.minecraft.world.entity.ai.memory.MemoryModuleType
+import net.minecraft.world.entity.ai.village.poi.PoiTypes
+import quaedam.Quaedam
+import java.util.*
+
+object WorkPoiAI {
+
+    const val ID = "work"
+
+    val poiTypes by lazy {
+        setOf(
+            PoiTypes.ARMORER,
+            PoiTypes.BUTCHER,
+            PoiTypes.CARTOGRAPHER,
+            PoiTypes.CLERIC,
+            PoiTypes.FARMER,
+            PoiTypes.FISHERMAN,
+            PoiTypes.FLETCHER,
+            PoiTypes.LEATHERWORKER,
+            PoiTypes.LIBRARIAN,
+            PoiTypes.MASON,
+            PoiTypes.SHEPHERD,
+            PoiTypes.TOOLSMITH,
+            PoiTypes.WEAPONSMITH,
+            PoiTypes.LODESTONE,
+            PoiTypes.LIGHTNING_ROD,
+        )
+    }
+
+    val memory = Quaedam.memoryTypes.register(ID) {
+        MemoryModuleType(Optional.of(GlobalPos.CODEC))
+    }!!
+
+    fun createAcquirePoi() =
+        AcquirePoi.create({ it.`is` { key -> key in poiTypes } }, memory.get(), false, Optional.empty())
+
+    fun createStrollToPoi() =
+        StrollToPoi.create(memory.get(), 0.4f, 7, 4)
+
+    fun createStrollAroundPoi() =
+        StrollAroundPoi.create(memory.get(), 0.4f, 5)
+
+}

common/src/main/kotlin/quaedam/projector/Projector.kt

@@ -6,6 +6,8 @@ import net.minecraft.world.item.Item
 import net.minecraft.world.level.Level
 import net.minecraft.world.level.block.entity.BlockEntityType
 import quaedam.Quaedam
+import quaedam.config.QuaedamConfig
+import quaedam.misc.reality.RealityStabler
 import quaedam.projection.ProjectionEffect
 import quaedam.projection.ProjectionEffectType
 import quaedam.utils.getChunksNearby
@@ -13,7 +15,6 @@ import quaedam.utils.getChunksNearby
 object Projector {
 
     const val ID = "projector"
-    const val EFFECT_RADIUS = 4
 
     val block = Quaedam.blocks.register(ID) { ProjectorBlock }!!
 
@@ -29,18 +30,28 @@ object Projector {
         BlockEntityType.Builder.of(::ProjectorBlockEntity, block.get()).build(null)
     }!!
 
-    fun findNearbyProjectors(level: Level, pos: BlockPos) = level.getChunksNearby(pos, EFFECT_RADIUS)
+    val currentEffectRadius get() = QuaedamConfig.current.valuesInt["projector.effect_radius"] ?: 4
+
+    fun findNearbyProjectors(level: Level, pos: BlockPos) = level.getChunksNearby(pos, currentEffectRadius)
         .flatMap {
-            it.blockEntities.filter { (_, v) -> v is ProjectorBlockEntity }
+            it.blockEntities.filter { (_, v) -> v is ProjectorBlockEntity && pos in v }
                 .keys
                 .filterNotNull()
         }
         .toSet()
 
     @Suppress("UNCHECKED_CAST")
-    fun <T : ProjectionEffect> findNearbyProjections(level: Level, pos: BlockPos, type: ProjectionEffectType<T>) =
-        findNearbyProjectors(level, pos)
+    fun <T : ProjectionEffect> findNearbyProjections(
+        level: Level,
+        pos: BlockPos,
+        type: ProjectionEffectType<T>
+    ): List<T> {
+        if (RealityStabler.checkEffect(level, pos)) {
+            return emptyList()
+        }
+        return findNearbyProjectors(level, pos)
             .map { level.getBlockEntity(it) as ProjectorBlockEntity }
             .mapNotNull { it.effects[type] as T? }
+    }
 
 }

common/src/main/kotlin/quaedam/projector/ProjectorBlock.kt

@@ -1,6 +1,7 @@
 package quaedam.projector
 
 import net.minecraft.core.BlockPos
+import net.minecraft.network.chat.Component
 import net.minecraft.server.level.ServerLevel
 import net.minecraft.util.RandomSource
 import net.minecraft.world.InteractionHand
@@ -13,7 +14,10 @@ import net.minecraft.world.level.block.Block
 import net.minecraft.world.level.block.EntityBlock
 import net.minecraft.world.level.block.state.BlockState
 import net.minecraft.world.level.material.MapColor
+import net.minecraft.world.level.material.PushReaction
 import net.minecraft.world.phys.BlockHitResult
+import quaedam.shell.ProjectionShellItem
+import quaedam.utils.sendBlockUpdated
 
 object ProjectorBlock : Block(Properties.of()
     .jumpFactor(0.8f)
@@ -21,7 +25,9 @@ object ProjectorBlock : Block(Properties.of()
     .mapColor(MapColor.COLOR_BLACK)
     .randomTicks()
     .strength(4.0f)
-    .requiresCorrectToolForDrops()), EntityBlock {
+    .requiresCorrectToolForDrops()
+    .pushReaction(PushReaction.IGNORE)
+), EntityBlock {
 
     fun checkUpdate(level: Level, pos: BlockPos) {
         if (!level.isClientSide) {
@@ -38,8 +44,23 @@ object ProjectorBlock : Block(Properties.of()
         interactionHand: InteractionHand,
         blockHitResult: BlockHitResult
     ): InteractionResult {
+        if (player.getItemInHand(interactionHand).item == ProjectionShellItem) {
+            if (!level.isClientSide) {
+                val entity = level.getBlockEntity(blockPos) as ProjectorBlockEntity
+                var newRadius = entity.effectRadius + 1
+                if (newRadius > Projector.currentEffectRadius) {
+                    newRadius = 0
+                }
+                entity.updateEffectArea(newRadius)
+                entity.setChanged()
+                entity.sendBlockUpdated()
+                checkUpdate(level, blockPos)
+                player.sendSystemMessage(Component.translatable("quaedam.projector.radius_updated", newRadius))
+            }
+            return InteractionResult.sidedSuccess(level.isClientSide)
+        }
         checkUpdate(level, blockPos)
-        return InteractionResult.SUCCESS
+        return InteractionResult.PASS
     }
 
     override fun newBlockEntity(pos: BlockPos, state: BlockState) = ProjectorBlockEntity(pos, state)

common/src/main/kotlin/quaedam/projector/ProjectorBlockEntity.kt

@@ -1,6 +1,7 @@
 package quaedam.projector
 
 import net.minecraft.core.BlockPos
+import net.minecraft.core.SectionPos
 import net.minecraft.core.Vec3i
 import net.minecraft.nbt.CompoundTag
 import net.minecraft.network.protocol.Packet
@@ -12,26 +13,28 @@ import net.minecraft.world.level.ChunkPos
 import net.minecraft.world.level.block.entity.BlockEntity
 import net.minecraft.world.level.block.state.BlockState
 import net.minecraft.world.level.levelgen.structure.BoundingBox
+import net.minecraft.world.phys.AABB
 import quaedam.projection.ProjectionEffect
 import quaedam.projection.ProjectionEffectType
 import quaedam.projection.ProjectionProvider
 import quaedam.utils.sendBlockUpdated
+import kotlin.math.max
+import kotlin.math.min
 
 class ProjectorBlockEntity(pos: BlockPos, state: BlockState) :
     BlockEntity(Projector.blockEntity.get(), pos, state) {
 
-    val effectAreaChunk by lazy {
-        val chunk = level!!.getChunk(pos).pos
-        ChunkPos(chunk.x - Projector.EFFECT_RADIUS, chunk.z - Projector.EFFECT_RADIUS) to
-                ChunkPos(chunk.x + Projector.EFFECT_RADIUS, chunk.z + Projector.EFFECT_RADIUS)
+    companion object {
+        const val TAG_EFFECT_RADIUS = "EffectRadius"
+        const val TAG_PROJECTION_EFFECTS = "ProjectionEffects"
     }
 
-    val effectArea: BoundingBox by lazy {
-        val chunk = level!!.getChunk(pos).pos
-        val (minChunk, maxChunk) = effectAreaChunk
-        val minBlock = BlockPos(minChunk.minBlockX, level!!.minBuildHeight, minChunk.minBlockZ)
-        val maxBlock = BlockPos(maxChunk.maxBlockX, level!!.maxBuildHeight, maxChunk.maxBlockZ)
-        BoundingBox.fromCorners(minBlock, maxBlock)
+    var effectRadius: Int = 0
+    lateinit var effectArea: BoundingBox
+    lateinit var effectAreaAABB: AABB
+
+    init {
+        updateEffectArea(Projector.currentEffectRadius)
     }
 
     val checkArea: BoundingBox by lazy {
@@ -46,18 +49,20 @@ class ProjectorBlockEntity(pos: BlockPos, state: BlockState) :
         effects.map { (type, effect) ->
             effectsTag.put(type.id.toString(), effect.toNbt())
         }
-        tag.put("ProjectionEffects", effectsTag)
+        tag.putInt(TAG_EFFECT_RADIUS, effectRadius)
+        tag.put(TAG_PROJECTION_EFFECTS, effectsTag)
     }
 
     override fun load(tag: CompoundTag) {
         super.load(tag)
-        val effectsTag = tag["ProjectionEffects"]
+        updateEffectArea(max(min(tag.getInt(TAG_EFFECT_RADIUS), Projector.currentEffectRadius), 0))
+        val effectsTag = tag[TAG_PROJECTION_EFFECTS]
         val effects = mutableMapOf<ProjectionEffectType<*>, ProjectionEffect>()
         if (effectsTag != null && effectsTag is CompoundTag) {
             effectsTag.allKeys.forEach { id ->
                 val type = ProjectionEffectType.registry[ResourceLocation(id)]
                 if (type != null) {
-                    val effect = type.constructor().apply { fromNbt(effectsTag[id] as CompoundTag) }
+                    val effect = type.constructor().apply { fromNbt(effectsTag[id] as CompoundTag, true) }
                     effects[type] = effect
                 }
             }
@@ -65,6 +70,20 @@ class ProjectorBlockEntity(pos: BlockPos, state: BlockState) :
         updateEffects(effects, notify = false)
     }
 
+    fun updateEffectArea(radius: Int) {
+        effectRadius = radius
+        val chunk = ChunkPos(SectionPos.blockToSectionCoord(blockPos.x), SectionPos.blockToSectionCoord(blockPos.z))
+        val minChunk = ChunkPos(chunk.x - radius, chunk.z - radius)
+        val maxChunk = ChunkPos(chunk.x + radius, chunk.z + radius)
+        // Y is not the limit value of Int because at
+        // Lnet/minecraft/world/level/entity/EntitySectionStorage;forEachAccessibleNonEmptySection(Lnet/minecraft/world/phys/AABB;Lnet/minecraft/util/AbortableIterationConsumer;)V
+        // it may get overflow
+        val minBlock = BlockPos(minChunk.minBlockX, Short.MIN_VALUE.toInt(), minChunk.minBlockZ)
+        val maxBlock = BlockPos(maxChunk.maxBlockX, Short.MAX_VALUE.toInt(), maxChunk.maxBlockZ)
+        effectArea = BoundingBox.fromCorners(minBlock, maxBlock)
+        effectAreaAABB = AABB(minBlock, maxBlock)
+    }
+
     override fun getUpdateTag(): CompoundTag = saveWithoutMetadata()
 
     override fun getUpdatePacket(): Packet<ClientGamePacketListener> = ClientboundBlockEntityDataPacket.create(this)
@@ -95,6 +114,7 @@ class ProjectorBlockEntity(pos: BlockPos, state: BlockState) :
                 if (!level.isClientSide && notify) {
                     sendBlockUpdated()
                 }
+                setChanged()
                 val addedEffects = effects.filterKeys { it !in oldEffects }
                 val removedEffects = oldEffects.filterKeys { it !in effects }
                 val updatedEffects = effects.filter { (k, v) -> oldEffects[k] != null && oldEffects[k] != v }
@@ -110,9 +130,6 @@ class ProjectorBlockEntity(pos: BlockPos, state: BlockState) :
 
     fun collectEffects(): Map<ProjectionEffectType<*>, ProjectionEffect> {
         val level = level!! as ServerLevel
-        if (!level.getBlockState(blockPos.below()).isAir) {
-            return emptyMap()
-        }
         val effects = mutableMapOf<ProjectionEffectType<*>, ProjectionEffect>()
         for (x in checkArea.minX()..checkArea.maxX()) {
             for (y in checkArea.minY()..checkArea.maxY()) {
@@ -121,7 +138,7 @@ class ProjectorBlockEntity(pos: BlockPos, state: BlockState) :
                     val blockState = level.getBlockState(pos)
                     val block = blockState.block
                     if (block is ProjectionProvider<*>) {
-                        val projection = block.createProjectionEffect(level, blockState, pos)
+                        val projection = block.applyProjectionEffect(level, blockState, pos)
                         if (projection != null) {
                             effects[projection.type] = projection
                         }

common/src/main/kotlin/quaedam/shell/ProjectionEffectShell.kt

@@ -0,0 +1,143 @@
+package quaedam.shell
+
+import net.minecraft.client.gui.components.AbstractSliderButton
+import net.minecraft.client.gui.components.CycleButton
+import net.minecraft.client.gui.components.StringWidget
+import net.minecraft.client.gui.layouts.LayoutElement
+import net.minecraft.network.chat.Component
+import quaedam.projection.ProjectionEffect
+import kotlin.reflect.KMutableProperty0
+
+class ProjectionEffectShell(val effect: ProjectionEffect) {
+
+    interface Provider {
+
+        fun createShell(): ProjectionEffectShell
+
+    }
+
+    val rows = mutableListOf<Row>()
+    val width = 150
+    val height = 20
+
+    data class Row(val text: Component, val renderer: ShellRenderer)
+
+    fun row(key: String, renderer: ShellRenderer) {
+        rows += Row(Component.translatable(key), renderer)
+    }
+
+    fun text(key: String, value: Component) = row(key) { StringWidget(value, it.font) }
+
+    fun doubleSlider(key: String, property: KMutableProperty0<Double>, range: ClosedRange<Double>, rawStep: Double) {
+        val len = range.endInclusive - range.start
+        val step = rawStep / len
+        row(key) {
+            object : AbstractSliderButton(
+                0, 0, width, height,
+                Component.literal(String.format("%.2f", property.get())), (property.get() - range.start) / len
+            ) {
+                override fun updateMessage() {
+                    message = Component.literal(String.format("%.2f", property.get()))
+                }
+
+                override fun applyValue() {
+                    val diff = value % step
+                    if (diff < step * 0.5) {
+                        value -= diff
+                    } else {
+                        value += (step - diff)
+                    }
+                    property.set(range.start + (value * len))
+                }
+            }
+        }
+    }
+
+    fun floatSlider(key: String, property: KMutableProperty0<Float>, range: ClosedRange<Float>, rawStep: Float) {
+        val len = range.endInclusive - range.start
+        val step = rawStep / len
+        row(key) {
+            object : AbstractSliderButton(
+                0,
+                0,
+                width,
+                height,
+                Component.literal(String.format("%.2f", property.get())),
+                (property.get() - range.start) / len.toDouble()
+            ) {
+                override fun updateMessage() {
+                    message = Component.literal(String.format("%.2f", property.get()))
+                }
+
+                override fun applyValue() {
+                    val diff = value % step
+                    if (diff < step * 0.5) {
+                        value -= diff
+                    } else {
+                        value += (step - diff)
+                    }
+                    property.set(range.start + (value.toFloat() * len))
+                }
+            }
+        }
+    }
+
+    fun intSlider(key: String, property: KMutableProperty0<Int>, range: IntProgression) {
+        val len = range.last - range.first
+        val step = range.step.toDouble() / len
+        row(key) {
+            object : AbstractSliderButton(
+                0, 0, width, height,
+                Component.literal(property.get().toString()), (property.get() - range.first).toDouble() / len
+            ) {
+                override fun updateMessage() {
+                    message = Component.literal(property.get().toString())
+                }
+
+                override fun applyValue() {
+                    val diff = value % step
+                    if (diff < step * 0.5) {
+                        value -= diff
+                    } else {
+                        value += (step - diff)
+                    }
+                    property.set(range.first + (value * len).toInt())
+                }
+            }
+        }
+    }
+
+    fun intCycle(key: String, property: KMutableProperty0<Int>, range: IntProgression) =
+        row(key) {
+            CycleButton.builder<Int> {
+                property.set(it)
+                Component.literal(it.toString())
+            }
+                .displayOnlyValue()
+                .withValues(range.toList())
+                .withInitialValue(property.get())
+                .create(0, 0, width, height, Component.translatable(key))
+        }
+
+    fun boolean(key: String, property: KMutableProperty0<Boolean>) =
+        row(key) {
+            CycleButton.builder<Boolean> {
+                property.set(it)
+                Component.translatable("$key.$it")
+            }
+                .displayOnlyValue()
+                .withValues(listOf(true, false))
+                .withInitialValue(property.get())
+                .create(0, 0, width, height, Component.translatable(key))
+        }
+
+}
+
+inline fun buildProjectionEffectShell(effect: ProjectionEffect, builder: ProjectionEffectShell.() -> Unit) =
+    ProjectionEffectShell(effect).apply(builder)
+
+data class ShellRenderContext(val screen: ProjectionShellScreen) {
+    val font get() = screen.getFont()
+}
+
+typealias ShellRenderer = (ctx: ShellRenderContext) -> LayoutElement

common/src/main/kotlin/quaedam/shell/ProjectionShell.kt

@@ -0,0 +1,25 @@
+package quaedam.shell
+
+import dev.architectury.networking.NetworkChannel
+import quaedam.Quaedam
+import quaedam.shell.network.ClientboundPSHLockResultPacket
+import quaedam.shell.network.ClientboundPSHLockRevokePacket
+import quaedam.shell.network.ServerboundPSHLockAcquirePacket
+import quaedam.shell.network.ServerboundPSHLockReleasePacket
+
+object ProjectionShell {
+
+    const val ID = "projection_shell"
+
+    val item = Quaedam.items.register(ID) { ProjectionShellItem }!!
+
+    val channel: NetworkChannel = NetworkChannel.create(Quaedam.resource(ID))
+
+    init {
+        ServerboundPSHLockAcquirePacket
+        ServerboundPSHLockReleasePacket
+        ClientboundPSHLockRevokePacket
+        ClientboundPSHLockResultPacket
+    }
+
+}

common/src/main/kotlin/quaedam/shell/ProjectionShellBlock.kt

@@ -0,0 +1,12 @@
+package quaedam.shell
+
+import net.minecraft.core.BlockPos
+import net.minecraft.world.level.Level
+
+interface ProjectionShellBlock {
+
+    fun getProjectionEffectForShell(level: Level, pos: BlockPos): ProjectionEffectShell
+
+    fun applyFromShell(level: Level, pos: BlockPos, shell: ProjectionEffectShell)
+
+}

common/src/main/kotlin/quaedam/shell/ProjectionShellItem.kt

@@ -0,0 +1,24 @@
+package quaedam.shell
+
+import net.minecraft.world.InteractionResult
+import net.minecraft.world.item.Item
+import net.minecraft.world.item.context.UseOnContext
+import quaedam.Quaedam
+import quaedam.shell.network.ServerboundPSHLockAcquirePacket
+
+object ProjectionShellItem : Item(
+    Properties()
+        .stacksTo(1)
+        .`arch$tab`(Quaedam.creativeModeTab)
+) {
+
+    override fun useOn(context: UseOnContext): InteractionResult {
+        val block = context.level.getBlockState(context.clickedPos).block
+        if (block is ProjectionShellBlock && context.level.isClientSide) {
+            ProjectionShell.channel.sendToServer(ServerboundPSHLockAcquirePacket(context.clickedPos))
+            return InteractionResult.SUCCESS
+        }
+        return InteractionResult.PASS
+    }
+
+}

common/src/main/kotlin/quaedam/shell/ProjectionShellMutex.kt

@@ -0,0 +1,53 @@
+package quaedam.shell
+
+import dev.architectury.event.events.common.TickEvent
+import net.minecraft.core.BlockPos
+import net.minecraft.core.GlobalPos
+import net.minecraft.server.level.ServerLevel
+import net.minecraft.server.level.ServerPlayer
+import quaedam.mixininterface.ProjectionShellMutexAccessor
+import quaedam.shell.network.ClientboundPSHLockRevokePacket
+
+object ProjectionShellMutex {
+
+    init {
+        TickEvent.SERVER_POST.register { server ->
+            if (server.tickCount and 8 == 0) {
+                val mutex = (server as ProjectionShellMutexAccessor).`quaedam$getProjectionShellMutex`()
+                val currentTime = System.currentTimeMillis()
+                mutex.forEach { (pos, lock) ->
+                    if (lock.player !in server.playerList.players) {
+                        mutex.remove(pos)
+                    } else if (currentTime - lock.time > 60 * 1000) {
+                        mutex.remove(pos)
+                        ProjectionShell.channel.sendToPlayer(lock.player, ClientboundPSHLockRevokePacket)
+                    }
+                }
+            }
+        }
+    }
+
+    fun tryLock(level: ServerLevel, pos: BlockPos, player: ServerPlayer): Boolean {
+        val mutex = (level.server as ProjectionShellMutexAccessor).`quaedam$getProjectionShellMutex`()
+        val gPos = GlobalPos.of(level.dimension(), pos)
+        if (mutex.values.any { it.player == player }) {
+            return false
+        }
+        if (gPos !in mutex) {
+            mutex[gPos] = Lock(player, System.currentTimeMillis())
+            return true
+        }
+        return false
+    }
+
+    fun release(level: ServerLevel, pos: BlockPos, player: ServerPlayer) {
+        val mutex = (level.server as ProjectionShellMutexAccessor).`quaedam$getProjectionShellMutex`()
+        val gPos = GlobalPos.of(level.dimension(), pos)
+        if (mutex[gPos]?.player == player) {
+            mutex.remove(gPos)
+        }
+    }
+
+    data class Lock(val player: ServerPlayer, val time: Long)
+
+}

common/src/main/kotlin/quaedam/shell/ProjectionShellScreen.kt

@@ -0,0 +1,86 @@
+package quaedam.shell
+
+import dev.architectury.utils.GameInstance
+import net.minecraft.client.gui.GuiGraphics
+import net.minecraft.client.gui.components.Button
+import net.minecraft.client.gui.components.StringWidget
+import net.minecraft.client.gui.layouts.GridLayout
+import net.minecraft.client.gui.screens.Screen
+import net.minecraft.core.BlockPos
+import net.minecraft.network.chat.Component
+import net.minecraft.world.level.Level
+import quaedam.shell.network.ServerboundPSHLockReleasePacket
+
+class ProjectionShellScreen(val level: Level, val pos: BlockPos, val shell: ProjectionEffectShell) :
+    Screen(Component.translatable("quaedam.screen.projection_shell")) {
+
+    companion object {
+        const val BORDER = 15
+    }
+
+    var layout = GridLayout()
+
+    override fun init() {
+        super.init()
+        layout = GridLayout()
+        layout.spacing(4)
+        val renderContext = ShellRenderContext(this)
+        if (shell.rows.isNotEmpty()) {
+            val rows = layout.createRowHelper(2)
+            shell.rows.forEach {
+                rows.addChild(StringWidget(150, 20, it.text, font))
+                rows.addChild(it.renderer(renderContext))
+            }
+            run { // Buttons
+                rows.addChild(StringWidget(Component.empty(), font))
+                rows.addChild(Button.builder(Component.translatable("quaedam.screen.projection_shell.save")) {
+                    GameInstance.getClient().setScreen(null)
+                }.build().apply(::setInitialFocus))
+            }
+        } else {
+            val rows = layout.createRowHelper(1)
+            rows.addChild(StringWidget(Component.translatable("quaedam.screen.projection_shell.empty"), font))
+            rows.addChild(Button.builder(Component.translatable("quaedam.screen.projection_shell.close")) {
+                GameInstance.getClient().setScreen(null)
+            }.build().apply(::setInitialFocus))
+        }
+        layout.arrangeElements()
+        layout.x = (width - layout.width) / 2
+        layout.y = (height - layout.height) / 2
+        layout.visitWidgets(::addRenderableWidget)
+        addRenderableOnly(StringWidget(level.getBlockState(pos).block.name, font).apply {
+            x = (this@ProjectionShellScreen.width - width) / 2
+            y = layout.y - 2 * BORDER - font.lineHeight
+        })
+    }
+
+    fun getFont() = font
+
+    override fun render(guiGraphics: GuiGraphics, mouseX: Int, mouseY: Int, partialTick: Float) {
+        renderBackground(guiGraphics)
+        super.render(guiGraphics, mouseX, mouseY, partialTick)
+    }
+
+    override fun renderBackground(guiGraphics: GuiGraphics) {
+        super.renderBackground(guiGraphics)
+        guiGraphics.fill(
+            layout.x - BORDER,
+            layout.y - BORDER,
+            layout.x + layout.width + BORDER,
+            layout.y + layout.height + BORDER,
+            0x11c6c6c6
+        )
+    }
+
+    override fun removed() {
+        super.removed()
+        val block = level.getBlockState(pos).block
+        if (block is ProjectionShellBlock) {
+            block.applyFromShell(level, pos, shell)
+        }
+        ProjectionShell.channel.sendToServer(ServerboundPSHLockReleasePacket(pos))
+    }
+
+    override fun isPauseScreen() = false
+
+}

common/src/main/kotlin/quaedam/shell/network/ClientboundPSHLockResultPacket.kt

@@ -0,0 +1,71 @@
+package quaedam.shell.network
+
+import dev.architectury.networking.NetworkManager.PacketContext
+import dev.architectury.utils.GameInstance
+import net.minecraft.core.BlockPos
+import net.minecraft.network.FriendlyByteBuf
+import net.minecraft.network.chat.Component
+import quaedam.Quaedam
+import quaedam.shell.ProjectionShell
+import quaedam.shell.ProjectionShellBlock
+import quaedam.shell.ProjectionShellScreen
+import java.util.function.Supplier
+
+data class ClientboundPSHLockResultPacket(val pos: BlockPos, val result: Boolean) {
+
+    companion object {
+        init {
+            ProjectionShell.channel.register(
+                ClientboundPSHLockResultPacket::class.java,
+                ClientboundPSHLockResultPacket::encode,
+                ::ClientboundPSHLockResultPacket,
+                ClientboundPSHLockResultPacket::apply
+            )
+        }
+    }
+
+    constructor(buf: FriendlyByteBuf) : this(buf.readBlockPos(), buf.readBoolean())
+
+    fun encode(buf: FriendlyByteBuf) {
+        buf.writeBlockPos(pos)
+        buf.writeBoolean(result)
+    }
+
+    fun apply(context: Supplier<PacketContext>) {
+        val ctx = context.get()
+        if (ctx.player.level().isClientSide) {
+            val client = GameInstance.getClient()
+            if (result) {
+                val level = ctx.player.level()
+                val block = level.getBlockState(pos).block
+                if (block is ProjectionShellBlock) {
+                    ctx.queue {
+                        try {
+                            client.setScreen(
+                                ProjectionShellScreen(
+                                    level,
+                                    pos,
+                                    block.getProjectionEffectForShell(level, pos)
+                                )
+                            )
+                        } catch (e: Throwable) {
+                            Quaedam.logger.error("Failed to open projection shell screen", e)
+                            ProjectionShell.channel.sendToServer(ServerboundPSHLockReleasePacket(pos))
+                        }
+                    }
+                } else {
+                    Quaedam.logger.warn("ClientboundPSHLockResultPacket with non-shell-provider block received")
+                }
+            } else {
+                ctx.queue {
+                    client.setScreen(null)
+                    client.gui.setOverlayMessage(
+                        Component.translatable("quaedam.screen.projection_shell.lock_failed"),
+                        false
+                    )
+                }
+            }
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/shell/network/ClientboundPSHLockRevokePacket.kt

@@ -0,0 +1,37 @@
+package quaedam.shell.network
+
+import dev.architectury.networking.NetworkManager.PacketContext
+import dev.architectury.utils.GameInstance
+import net.minecraft.network.chat.Component
+import quaedam.shell.ProjectionShell
+import quaedam.shell.ProjectionShellScreen
+import java.util.function.Supplier
+
+object ClientboundPSHLockRevokePacket {
+
+    init {
+        ProjectionShell.channel.register(
+            ClientboundPSHLockRevokePacket::class.java,
+            { _, _ -> },
+            { ClientboundPSHLockRevokePacket },
+            { _, ctx -> apply(ctx) }
+        )
+    }
+
+    private fun apply(context: Supplier<PacketContext>) {
+        val ctx = context.get()
+        if (ctx.player.level().isClientSide) {
+            ctx.queue {
+                val client = GameInstance.getClient()
+                if (client.screen is ProjectionShellScreen) {
+                    client.setScreen(null)
+                    client.gui.setOverlayMessage(
+                        Component.translatable("quaedam.screen.projection_shell.lock_revoked"),
+                        false
+                    )
+                }
+            }
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/shell/network/ServerboundPSHLockAcquirePacket.kt

@@ -0,0 +1,48 @@
+package quaedam.shell.network
+
+import dev.architectury.networking.NetworkManager.PacketContext
+import net.minecraft.core.BlockPos
+import net.minecraft.network.FriendlyByteBuf
+import net.minecraft.server.level.ServerLevel
+import net.minecraft.server.level.ServerPlayer
+import quaedam.shell.ProjectionShell
+import quaedam.shell.ProjectionShellBlock
+import quaedam.shell.ProjectionShellMutex
+import java.util.function.Supplier
+
+data class ServerboundPSHLockAcquirePacket(val pos: BlockPos) {
+
+    companion object {
+        init {
+            ProjectionShell.channel.register(
+                ServerboundPSHLockAcquirePacket::class.java,
+                ServerboundPSHLockAcquirePacket::encode,
+                ::ServerboundPSHLockAcquirePacket,
+                ServerboundPSHLockAcquirePacket::apply
+            )
+        }
+    }
+
+    constructor(buf: FriendlyByteBuf) : this(buf.readBlockPos())
+
+    fun encode(buf: FriendlyByteBuf) {
+        buf.writeBlockPos(pos)
+    }
+
+    fun apply(context: Supplier<PacketContext>) {
+        val ctx = context.get()
+        if (!ctx.player.level().isClientSide) {
+            ctx.queue {
+                val player = ctx.player as ServerPlayer
+                val level = ctx.player.level() as ServerLevel
+                if (level.getBlockState(pos).block !is ProjectionShellBlock) {
+                    ProjectionShell.channel.sendToPlayer(player, ClientboundPSHLockResultPacket(pos, false))
+                    return@queue
+                }
+                val result = ProjectionShellMutex.tryLock(level, pos, player)
+                ProjectionShell.channel.sendToPlayer(player, ClientboundPSHLockResultPacket(pos, result))
+            }
+        }
+    }
+
+}

common/src/main/kotlin/quaedam/shell/network/ServerboundPSHLockReleasePacket.kt

@@ -0,0 +1,41 @@
+package quaedam.shell.network
+
+import dev.architectury.networking.NetworkManager.PacketContext
+import net.minecraft.core.BlockPos
+import net.minecraft.network.FriendlyByteBuf
+import net.minecraft.server.level.ServerLevel
+import net.minecraft.server.level.ServerPlayer
+import quaedam.shell.ProjectionShell
+import quaedam.shell.ProjectionShellMutex
+import java.util.function.Supplier
+
+data class ServerboundPSHLockReleasePacket(val pos: BlockPos) {
+
+    companion object {
+        init {
+            ProjectionShell.channel.register(
+                ServerboundPSHLockReleasePacket::class.java,
+                ServerboundPSHLockReleasePacket::encode,
+                ::ServerboundPSHLockReleasePacket,
+                ServerboundPSHLockReleasePacket::apply
+            )
+        }
+    }
+
+    constructor(buf: FriendlyByteBuf) : this(buf.readBlockPos())
+
+    fun encode(buf: FriendlyByteBuf) {
+        buf.writeBlockPos(pos)
+    }
+
+    fun apply(context: Supplier<PacketContext>) {
+        val ctx = context.get()
+        if (!ctx.player.level().isClientSide) {
+            ctx.queue {
+                val player = ctx.player as ServerPlayer
+                ProjectionShellMutex.release(ctx.player.level() as ServerLevel, pos, player)
+            }
+        }
+    }
+
+}

common/src/main/resources/assets/quaedam/blockstates/causality_anchor.json

@@ -0,0 +1,20 @@
+{
+  "variants": {
+    "facing=east": {
+      "model": "quaedam:block/causality_anchor",
+      "y": 270
+    },
+    "facing=south": {
+      "model": "quaedam:block/causality_anchor",
+      "y": 0
+    },
+    "facing=west": {
+      "model": "quaedam:block/causality_anchor",
+      "y": 90
+    },
+    "facing=north": {
+      "model": "quaedam:block/causality_anchor",
+      "y": 180
+    }
+  }
+}

common/src/main/resources/assets/quaedam/blockstates/music_projection.json

@@ -0,0 +1,7 @@
+{
+  "variants": {
+    "": {
+      "model": "quaedam:block/music_projection"
+    }
+  }
+}

common/src/main/resources/assets/quaedam/blockstates/noise_projection.json

@@ -0,0 +1,7 @@
+{
+  "variants": {
+    "": {
+      "model": "quaedam:block/noise_projection"
+    }
+  }
+}

common/src/main/resources/assets/quaedam/blockstates/reality_stabler.json

@@ -0,0 +1,20 @@
+{
+  "variants": {
+    "facing=east": {
+      "model": "quaedam:block/reality_stabler",
+      "y": 270
+    },
+    "facing=south": {
+      "model": "quaedam:block/reality_stabler",
+      "y": 0
+    },
+    "facing=west": {
+      "model": "quaedam:block/reality_stabler",
+      "y": 90
+    },
+    "facing=north": {
+      "model": "quaedam:block/reality_stabler",
+      "y": 180
+    }
+  }
+}

common/src/main/resources/assets/quaedam/blockstates/smart_instrument.json

@@ -0,0 +1,7 @@
+{
+  "variants": {
+    "": {
+      "model": "quaedam:block/smart_instrument"
+    }
+  }
+}

common/src/main/resources/assets/quaedam/blockstates/sound_projection.json

@@ -0,0 +1,7 @@
+{
+  "variants": {
+    "": {
+      "model": "quaedam:block/sound_projection"
+    }
+  }
+}

common/src/main/resources/assets/quaedam/lang/en_us.json

@@ -3,5 +3,46 @@
   "block.quaedam.projector": "Projector",
   "block.quaedam.skylight_projection": "Skylight Projection",
   "block.quaedam.swarm_projection": "Swarm Projection",
-  "entity.quaedam.projected_person": "Virtual Person"
+  "block.quaedam.sound_projection": "Sound Projection",
+  "block.quaedam.noise_projection": "Noise Projection",
+  "block.quaedam.music_projection": "Music Projection",
+  "block.quaedam.smart_instrument": "Smart Instrument",
+  "block.quaedam.causality_anchor": "Causality Anchor",
+  "block.quaedam.reality_stabler": "Reality Stabler",
+  "entity.quaedam.projected_person": "Virtual Person",
+  "item.quaedam.projection_shell": "Projection Shell",
+  "item.quaedam.iron_copper_metal": "Copper-iron Alloy",
+  "item.quaedam.projection_metal": "Projection Metal",
+  "quaedam.projector.radius_updated": "Current effect radius: %s",
+  "quaedam.screen.projection_shell": "Projection Shell",
+  "quaedam.screen.projection_shell.lock_revoked": "Timeout! Connection Lost",
+  "quaedam.screen.projection_shell.lock_failed": "Permission denied!",
+  "quaedam.screen.projection_shell.save": "Save",
+  "quaedam.screen.projection_shell.empty": "No Options Available!",
+  "quaedam.screen.projection_shell.close": "Close",
+  "quaedam.shell.skylight.factor": "Factor",
+  "quaedam.shell.noise.rate": "Rate",
+  "quaedam.shell.noise.amount": "Amount",
+  "quaedam.shell.noise.volume": "Volume",
+  "quaedam.shell.swarm.max_count": "Max Count",
+  "quaedam.shell.sound.rate": "Rate",
+  "quaedam.shell.sound.volume": "Volume",
+  "quaedam.shell.music.volume_factor": "Volume Factor",
+  "quaedam.shell.music.particle": "Particle",
+  "quaedam.shell.music.particle.true": "Display",
+  "quaedam.shell.music.particle.false": "Hidden",
+  "advancements.quaedam.causality_anchor.title": "Causality",
+  "advancements.quaedam.causality_anchor.description": "Is there any reason for this?",
+  "advancements.quaedam.projector.title": "Quaedam",
+  "advancements.quaedam.projector.description": "Use projectors to project",
+  "advancements.quaedam.reality_stabler.title": "More Stable",
+  "advancements.quaedam.reality_stabler.description": "Use reality stabler to stable the reality",
+  "advancements.quaedam.smart_instrument.title": "Better than Note Block",
+  "advancements.quaedam.smart_instrument.description": "Use smart instrument",
+  "advancements.quaedam.sound_projection.title": "Get Noisier",
+  "advancements.quaedam.sound_projection.description": "Make a sound projection",
+  "advancements.quaedam.swarm_projection.title": "Too many people",
+  "advancements.quaedam.swarm_projection.description": "Make a swarm projection",
+  "advancements.quaedam.kill_projected_person.title": "Go away",
+  "advancements.quaedam.kill_projected_person.description": "Kill a projection person\n\nWhy are you doing this?\nThis is bad."
 }

common/src/main/resources/assets/quaedam/lang/zh_cn.json

@@ -1,7 +1,48 @@
 {
-    "category.quaedam": "Quaedam",
-    "block.quaedam.projector": "投影仪",
-    "block.quaedam.skylight_projection": "天光投影",
-    "block.quaedam.swarm_projection": "人群投影",
-    "entity.quaedam.projected_person": "虚拟个体"
+  "category.quaedam": "Quaedam",
+  "block.quaedam.projector": "投影仪",
+  "block.quaedam.skylight_projection": "天光投影",
+  "block.quaedam.swarm_projection": "人群投影",
+  "block.quaedam.sound_projection": "声音投影",
+  "block.quaedam.noise_projection": "噪声投影",
+  "block.quaedam.music_projection": "音乐投影",
+  "block.quaedam.causality_anchor": "因果锚",
+  "block.quaedam.reality_stabler": "现实稳定器",
+  "block.quaedam.smart_instrument": "智能乐器",
+  "entity.quaedam.projected_person": "虚拟个体",
+  "item.quaedam.projection_shell": "投影操作面板",
+  "item.quaedam.iron_copper_metal": "铜铁合金",
+  "item.quaedam.projection_metal": "投影金属",
+  "quaedam.projector.radius_updated": "当前效果半径：%s",
+  "quaedam.screen.projection_shell": "投影操作",
+  "quaedam.screen.projection_shell.lock_revoked": "超时！连接丢失",
+  "quaedam.screen.projection_shell.lock_failed": "正被使用",
+  "quaedam.screen.projection_shell.save": "保存",
+  "quaedam.screen.projection_shell.empty": "无可用选项！",
+  "quaedam.screen.projection_shell.close": "关闭",
+  "quaedam.shell.skylight.factor": "因子",
+  "quaedam.shell.noise.rate": "速率",
+  "quaedam.shell.noise.amount": "数量",
+  "quaedam.shell.noise.volume": "响度因子",
+  "quaedam.shell.swarm.max_count": "最大数量",
+  "quaedam.shell.sound.rate": "速率",
+  "quaedam.shell.sound.volume": "响度因子",
+  "quaedam.shell.music.volume_factor": "响度因子",
+  "quaedam.shell.music.particle": "粒子效果",
+  "quaedam.shell.music.particle.true": "显示",
+  "quaedam.shell.music.particle.false": "隐藏",
+  "advancements.quaedam.causality_anchor.title": "因果律",
+  "advancements.quaedam.causality_anchor.description": "这不合理",
+  "advancements.quaedam.projector.title": "Quaedam",
+  "advancements.quaedam.projector.description": "使用投影仪进行投影",
+  "advancements.quaedam.reality_stabler.title": "更加稳定",
+  "advancements.quaedam.reality_stabler.description": "使用现实稳定器稳定现实",
+  "advancements.quaedam.smart_instrument.title": "比音符盒更好",
+  "advancements.quaedam.smart_instrument.description": "使用智能乐器",
+  "advancements.quaedam.sound_projection.title": "更加吵闹",
+  "advancements.quaedam.sound_projection.description": "制作声音投影",
+  "advancements.quaedam.swarm_projection.title": "太多人了",
+  "advancements.quaedam.swarm_projection.description": "制作人群投影",
+  "advancements.quaedam.kill_projected_person.title": "走开",
+  "advancements.quaedam.kill_projected_person.description": "杀死一个投影人\n\n你为什么要这样做呢？\n这是不好的。"
 }

common/src/main/resources/assets/quaedam/lang/zh_meme.json

@@ -0,0 +1,48 @@
+{
+  "category.quaedam": "有些事",
+  "block.quaedam.projector": "不会发光的投影仪",
+  "block.quaedam.skylight_projection": "天窗发射",
+  "block.quaedam.swarm_projection": "群体发射",
+  "block.quaedam.sound_projection": "生活上的噪声发射",
+  "block.quaedam.noise_projection": "物理上的噪声发射",
+  "block.quaedam.music_projection": "音乐（lè）发射",
+  "block.quaedam.causality_anchor": "宇宙万法的那个源头————如",
+  "block.quaedam.reality_stabler": "投影？退，退，退",
+  "block.quaedam.smart_instrument": "SMART（消歧义）笔记方块",
+  "entity.quaedam.projected_person": "没用的废物",
+  "item.quaedam.projection_shell": "投射滥权终端",
+  "item.quaedam.iron_copper_metal": "有点生锈的铁锭",
+  "item.quaedam.projection_metal": "投影Metal©",
+  "quaedam.projector.radius_updated": "现在乱七八糟的效果能碰到的范围：%s",
+  "quaedam.screen.projection_shell": "控制面板",
+  "quaedam.screen.projection_shell.lock_revoked": "土豆熟了",
+  "quaedam.screen.projection_shell.lock_failed": "宁配吗？",
+  "quaedam.screen.projection_shell.save": "我好了",
+  "quaedam.screen.projection_shell.empty": "空",
+  "quaedam.screen.projection_shell.close": "怒退",
+  "quaedam.shell.skylight.factor": "防晒系数",
+  "quaedam.shell.noise.rate": "急急急等级",
+  "quaedam.shell.noise.amount": "声卡压榨等级",
+  "quaedam.shell.noise.volume": "振幅大小",
+  "quaedam.shell.swarm.max_count": "显卡和处理器迫害等级",
+  "quaedam.shell.sound.rate": "急急急等级",
+  "quaedam.shell.sound.volume": "振幅大小",
+  "quaedam.shell.music.volume_factor": "振幅大小",
+  "quaedam.shell.music.particle": "会变色的颗粒buff",
+  "quaedam.shell.music.particle.true": "打开",
+  "quaedam.shell.music.particle.false": "关掉，关掉，一定要关掉",
+  "advancements.quaedam.causality_anchor.title": "因果律",
+  "advancements.quaedam.causality_anchor.description": "这不合理",
+  "advancements.quaedam.projector.title": "有些事",
+  "advancements.quaedam.projector.description": "你是黑魔法（指着 JVMTI）师吗？",
+  "advancements.quaedam.reality_stabler.title": "水滴",
+  "advancements.quaedam.reality_stabler.description": "tql，这是强互作用力做的吗",
+  "advancements.quaedam.smart_instrument.title": "SMART（消歧义）",
+  "advancements.quaedam.smart_instrument.description": "音乐盘？不需要的",
+  "advancements.quaedam.sound_projection.title": "不要偷偷摸摸",
+  "advancements.quaedam.sound_projection.description": "又没有幽（yóu）匿分贝仪、幽（yóu）匿尖叫体或大聪明，怕什么",
+  "advancements.quaedam.swarm_projection.title": "多来点，爱看",
+  "advancements.quaedam.swarm_projection.description": "",
+  "advancements.quaedam.kill_projected_person.title": "失败",
+  "advancements.quaedam.kill_projected_person.description": "投影人这么可爱，为什么要失败投影人\n\n你干嘛～～\n坏，太坏了，你不能这样。"
+}

common/src/main/resources/assets/quaedam/models/block/causality_anchor.json

@@ -0,0 +1,106 @@
+{
+	"parent": "minecraft:block/block",
+	"texture_size": [64, 64],
+	"textures": {
+		"0": "quaedam:block/causality_anchor",
+		"particle": "quaedam:block/causality_anchor"
+	},
+	"elements": [
+		{
+			"name": "s2",
+			"from": [13, -6, 14],
+			"to": [15, 6, 16],
+			"rotation": {"angle": -22.5, "axis": "x", "origin": [-1, 0, 0]},
+			"faces": {
+				"north": {"uv": [4, 4, 4.5, 7], "texture": "#0"},
+				"east": {"uv": [4.5, 4, 5, 7], "texture": "#0"},
+				"south": {"uv": [0, 5, 0.5, 8], "texture": "#0"},
+				"west": {"uv": [0.5, 5, 1, 8], "texture": "#0"},
+				"up": {"uv": [5.75, 7.5, 5.25, 7], "texture": "#0"},
+				"down": {"uv": [7.5, 5.5, 7, 6], "texture": "#0"}
+			}
+		},
+		{
+			"name": "s3",
+			"from": [1, -6, 14],
+			"to": [3, 6, 16],
+			"rotation": {"angle": -22.5, "axis": "x", "origin": [1, 0, 0]},
+			"faces": {
+				"north": {"uv": [1, 5, 1.5, 8], "texture": "#0"},
+				"east": {"uv": [1.5, 5, 2, 8], "texture": "#0"},
+				"south": {"uv": [2, 5, 2.5, 8], "texture": "#0"},
+				"west": {"uv": [2.5, 5, 3, 8], "texture": "#0"},
+				"up": {"uv": [6.25, 7.5, 5.75, 7], "texture": "#0"},
+				"down": {"uv": [7.5, 6, 7, 6.5], "texture": "#0"}
+			}
+		},
+		{
+			"name": "s4",
+			"from": [1, 0, -1],
+			"to": [3, 12, 1],
+			"rotation": {"angle": 22.5, "axis": "x", "origin": [1, 0, 0]},
+			"faces": {
+				"north": {"uv": [3, 5, 3.5, 8], "texture": "#0"},
+				"east": {"uv": [3.5, 5, 4, 8], "texture": "#0"},
+				"south": {"uv": [5, 4, 5.5, 7], "texture": "#0"},
+				"west": {"uv": [5.5, 4, 6, 7], "texture": "#0"},
+				"up": {"uv": [6.75, 7.5, 6.25, 7], "texture": "#0"},
+				"down": {"uv": [7.5, 6.5, 7, 7], "texture": "#0"}
+			}
+		},
+		{
+			"name": "s1",
+			"from": [13, 0, -1],
+			"to": [15, 12, 1],
+			"rotation": {"angle": 22.5, "axis": "x", "origin": [-1, 0, 0]},
+			"faces": {
+				"north": {"uv": [6, 0, 6.5, 3], "texture": "#0"},
+				"east": {"uv": [6, 4, 6.5, 7], "texture": "#0"},
+				"south": {"uv": [6.5, 0, 7, 3], "texture": "#0"},
+				"west": {"uv": [6.5, 4, 7, 7], "texture": "#0"},
+				"up": {"uv": [7.25, 7.5, 6.75, 7], "texture": "#0"},
+				"down": {"uv": [7.75, 4, 7.25, 4.5], "texture": "#0"}
+			}
+		},
+		{
+			"name": "platform",
+			"from": [0, 10, 3],
+			"to": [16, 12, 13],
+			"faces": {
+				"north": {"uv": [4, 3, 8, 3.5], "texture": "#0"},
+				"east": {"uv": [7, 0, 9.5, 0.5], "texture": "#0"},
+				"south": {"uv": [4, 3.5, 8, 4], "texture": "#0"},
+				"west": {"uv": [7, 0.5, 9.5, 1], "texture": "#0"},
+				"up": {"uv": [4, 2.5, 0, 0], "texture": "#0"},
+				"down": {"uv": [4, 2.5, 0, 5], "texture": "#0"}
+			}
+		},
+		{
+			"name": "core",
+			"from": [6, 14, 7],
+			"to": [10, 16, 9],
+			"faces": {
+				"north": {"uv": [7, 1.5, 8, 2], "texture": "#0"},
+				"east": {"uv": [7.25, 4.5, 7.75, 5], "texture": "#0"},
+				"south": {"uv": [7, 2, 8, 2.5], "texture": "#0"},
+				"west": {"uv": [7.25, 5, 7.75, 5.5], "texture": "#0"},
+				"up": {"uv": [8, 3, 7, 2.5], "texture": "#0"},
+				"down": {"uv": [5, 7, 4, 7.5], "texture": "#0"}
+			}
+		},
+		{
+			"name": "screen",
+			"from": [4, 6, -2],
+			"to": [12, 12, -1],
+			"rotation": {"angle": 22.5, "axis": "x", "origin": [0, 0, 0]},
+			"faces": {
+				"north": {"uv": [4, 0, 6, 1.5], "texture": "#0"},
+				"east": {"uv": [7, 4, 7.25, 5.5], "texture": "#0"},
+				"south": {"uv": [4, 1.5, 6, 3], "texture": "#0"},
+				"west": {"uv": [5, 7, 5.25, 8.5], "texture": "#0"},
+				"up": {"uv": [9, 1.25, 7, 1], "texture": "#0"},
+				"down": {"uv": [9, 1.25, 7, 1.5], "texture": "#0"}
+			}
+		}
+	]
+}

common/src/main/resources/assets/quaedam/models/block/music_projection.json

@@ -0,0 +1,6 @@
+{
+  "parent": "quaedam:block/projection",
+  "textures": {
+    "ext": "quaedam:block/music_projection"
+  }
+}

common/src/main/resources/assets/quaedam/models/block/noise_projection.json

@@ -0,0 +1,6 @@
+{
+  "parent": "quaedam:block/projection",
+  "textures": {
+    "ext": "quaedam:block/noise_projection"
+  }
+}

common/src/main/resources/assets/quaedam/models/block/reality_stabler.json

@@ -0,0 +1,49 @@
+{
+	"parent": "minecraft:block/block",
+	"texture_size": [64, 64],
+	"textures": {
+		"0": "quaedam:block/reality_stabler",
+		"particle": "quaedam:block/reality_stabler"
+	},
+	"elements": [
+		{
+			"name": "bottom",
+			"from": [1, 0, 1],
+			"to": [15, 1, 15],
+			"faces": {
+				"north": {"uv": [7.5, 10.5, 11, 10.75], "texture": "#0"},
+				"east": {"uv": [7.5, 10.75, 11, 11], "texture": "#0"},
+				"south": {"uv": [7.5, 11, 11, 11.25], "texture": "#0"},
+				"west": {"uv": [11, 10.5, 14.5, 10.75], "texture": "#0"},
+				"up": {"uv": [11.5, 3.5, 8, 0], "texture": "#0"},
+				"down": {"uv": [11.5, 3.5, 8, 7], "texture": "#0"}
+			}
+		},
+		{
+			"name": "center",
+			"from": [0, 1, 0],
+			"to": [16, 14, 16],
+			"faces": {
+				"north": {"uv": [4, 0, 8, 3.25], "texture": "#0"},
+				"east": {"uv": [4, 3.25, 8, 6.5], "texture": "#0"},
+				"south": {"uv": [4, 6.5, 8, 9.75], "texture": "#0"},
+				"west": {"uv": [0, 8, 4, 11.25], "texture": "#0"},
+				"up": {"uv": [4, 4, 0, 0], "texture": "#0"},
+				"down": {"uv": [4, 4, 0, 8], "texture": "#0"}
+			}
+		},
+		{
+			"name": "top",
+			"from": [1, 14, 1],
+			"to": [15, 15, 15],
+			"faces": {
+				"north": {"uv": [11, 10.75, 14.5, 11], "texture": "#0"},
+				"east": {"uv": [11, 11, 14.5, 11.25], "texture": "#0"},
+				"south": {"uv": [0, 11.25, 3.5, 11.5], "texture": "#0"},
+				"west": {"uv": [7.5, 11.25, 11, 11.5], "texture": "#0"},
+				"up": {"uv": [11.5, 10.5, 8, 7], "texture": "#0"},
+				"down": {"uv": [7.5, 9.75, 4, 13.25], "texture": "#0"}
+			}
+		}
+	]
+}

common/src/main/resources/assets/quaedam/models/block/smart_instrument.json

@@ -0,0 +1,3 @@
+{
+  "parent": "minecraft:block/note_block"
+}

common/src/main/resources/assets/quaedam/models/block/sound_projection.json

@@ -0,0 +1,6 @@
+{
+  "parent": "quaedam:block/projection",
+  "textures": {
+    "ext": "quaedam:block/sound_projection"
+  }
+}

common/src/main/resources/assets/quaedam/models/item/causality_anchor.json

@@ -0,0 +1,3 @@
+{
+  "parent": "quaedam:block/causality_anchor"
+}

common/src/main/resources/assets/quaedam/models/item/iron_copper_metal.json

@@ -0,0 +1,6 @@
+{
+  "parent": "item/generated",
+  "textures": {
+    "layer0": "quaedam:item/iron_copper_metal"
+  }
+}

common/src/main/resources/assets/quaedam/models/item/music_projection.json

@@ -0,0 +1,3 @@
+{
+  "parent": "quaedam:block/music_projection"
+}

common/src/main/resources/assets/quaedam/models/item/noise_projection.json

@@ -0,0 +1,3 @@
+{
+  "parent": "quaedam:block/noise_projection"
+}

common/src/main/resources/assets/quaedam/models/item/projection_metal.json

@@ -0,0 +1,6 @@
+{
+  "parent": "item/generated",
+  "textures": {
+    "layer0": "quaedam:item/projection_metal"
+  }
+}

common/src/main/resources/assets/quaedam/models/item/projection_shell.json

@@ -0,0 +1,6 @@
+{
+  "parent": "item/generated",
+  "textures": {
+    "layer0": "quaedam:item/projection_shell"
+  }
+}

common/src/main/resources/assets/quaedam/models/item/reality_stabler.json

@@ -0,0 +1,3 @@
+{
+  "parent": "quaedam:block/reality_stabler"
+}

common/src/main/resources/assets/quaedam/models/item/smart_instrument.json

@@ -0,0 +1,3 @@
+{
+  "parent": "quaedam:block/smart_instrument"
+}

common/src/main/resources/assets/quaedam/models/item/sound_projection.json

@@ -0,0 +1,3 @@
+{
+  "parent": "quaedam:block/sound_projection"
+}

common/src/main/resources/assets/quaedam/sounds.json

@@ -0,0 +1,178 @@
+{
+  "entity.projected_person.noise": {
+    "sounds": [
+      {
+        "name": "entity.villager.ambient",
+        "weight": 4,
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.yes",
+        "weight": 2,
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.no",
+        "weight": 1,
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.trade",
+        "weight": 3,
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_librarian",
+        "weight": 2,
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_cleric",
+        "weight": 2,
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_mason",
+        "weight": 2,
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_shepherd",
+        "weight": 2,
+        "type": "event"
+      },
+      {
+        "name": "entity.wandering_trader.drink_milk",
+        "weight": 1,
+        "volume": 0.5,
+        "type": "event"
+      },
+      {
+        "name": "entity.wandering_trader.no",
+        "weight": 1,
+        "type": "event"
+      },
+      {
+        "name": "entity.wandering_trader.yes",
+        "weight": 1,
+        "type": "event"
+      },
+      {
+        "name": "block.sand.step",
+        "weight": 2,
+        "type": "event"
+      },
+      {
+        "name": "block.scaffolding.step",
+        "weight": 2,
+        "type": "event"
+      },
+      {
+        "name": "block.stone.step",
+        "weight": 2,
+        "type": "event"
+      },
+      {
+        "name": "block.grass.step",
+        "weight": 2,
+        "type": "event"
+      },
+      {
+        "name": "block.wet_grass.step",
+        "weight": 1,
+        "type": "event"
+      },
+      {
+        "name": "block.bamboo_wood.step",
+        "weight": 1,
+        "type": "event"
+      },
+      {
+        "name": "block.cherry_wood.step",
+        "weight": 1,
+        "type": "event"
+      },
+      {
+        "name": "block.wood.step",
+        "weight": 2,
+        "type": "event"
+      }
+    ]
+  },
+  "quaedam.projection.noise": {
+    "sounds": [
+      {
+        "name": "entity.villager.work_armorer",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_butcher",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_cartographer",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_cleric",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_farmer",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_fisherman",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_fletcher",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_leatherworker",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_librarian",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_mason",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_shepherd",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_toolsmith",
+        "type": "event"
+      },
+      {
+        "name": "entity.villager.work_weaponsmith",
+        "type": "event"
+      },
+      {
+        "name": "block.anvil.use",
+        "type": "event"
+      },
+      {
+        "name": "block.furnace.fire_crackle",
+        "type": "event"
+      },
+      {
+        "name": "block.blastfurnace.fire_crackle",
+        "type": "event"
+      },
+      {
+        "name": "block.metal.break",
+        "type": "event"
+      },
+      {
+        "name": "block.wood.break",
+        "type": "event"
+      }
+    ]
+  }
+}