diff --git a/build.gradle.kts b/build.gradle.kts
index d3f20e6..b66a650 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -21,7 +21,10 @@ subprojects {
 
     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")
+        })
     }
 }
 
@@ -35,6 +38,13 @@ allprojects {
     version = "1.0.0"
     group = "quaedam"
 
+    repositories {
+        maven {
+            name = "ParchmentMC"
+            setUrl("https://maven.parchmentmc.org")
+        }
+    }
+
     dependencies {
         compileOnly("org.jetbrains.kotlin:kotlin-stdlib")
     }
diff --git a/common/src/main/kotlin/quaedam/Quaedam.kt b/common/src/main/kotlin/quaedam/Quaedam.kt
index 62ee12e..392a45c 100644
--- a/common/src/main/kotlin/quaedam/Quaedam.kt
+++ b/common/src/main/kotlin/quaedam/Quaedam.kt
@@ -11,6 +11,7 @@ import net.minecraft.world.item.ItemStack
 import org.slf4j.LoggerFactory
 import quaedam.projection.ProjectionCommand
 import quaedam.projection.ProjectionEffectType
+import quaedam.projection.SimpleProjectionUpdate
 import quaedam.projection.misc.NoiseProjection
 import quaedam.projection.misc.SkylightProjection
 import quaedam.projection.misc.SoundProjection
@@ -48,6 +49,7 @@ object Quaedam {
         SoundProjection
         NoiseProjection
         ProjectionCommand
+        SimpleProjectionUpdate
 
         creativeModeTabs.register()
         items.register()
diff --git a/common/src/main/kotlin/quaedam/projection/EntityProjectionBlock.kt b/common/src/main/kotlin/quaedam/projection/EntityProjectionBlock.kt
index 93c5208..208f9d6 100644
--- a/common/src/main/kotlin/quaedam/projection/EntityProjectionBlock.kt
+++ b/common/src/main/kotlin/quaedam/projection/EntityProjectionBlock.kt
@@ -1,12 +1,14 @@
 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.utils.sendBlockUpdated
 
 abstract class EntityProjectionBlock<P : ProjectionEffect>(properties: Properties = createProperties()) :
     ProjectionBlock<P>(properties), EntityBlock {
@@ -17,16 +19,25 @@ abstract class EntityProjectionBlock<P : ProjectionEffect>(properties: Propertie
 
     abstract val blockEntity: DeferredSupplier<BlockEntityType<SimpleProjectionEntity<P>>>
 
-    override fun newBlockEntity(pos: BlockPos, state: BlockState) = blockEntity.get().create(pos, state)
+    override fun newBlockEntity(pos: BlockPos, state: BlockState) = blockEntity.get().create(pos, state)!!
 
     @Suppress("UNCHECKED_CAST")
-    fun getProjection(level: Level, pos: BlockPos) = (level.getBlockEntity(pos) as SimpleProjectionEntity<P>).projection
+    fun getBlockEntity(level: Level, pos: BlockPos) = (level.getBlockEntity(pos) as SimpleProjectionEntity<P>)
 
-    override fun applyProjectionEffect(level: ServerLevel, state: BlockState, pos: BlockPos) = getProjection(level, pos)
+    override fun applyProjectionEffect(level: ServerLevel, state: BlockState, pos: BlockPos) =
+        getBlockEntity(level, pos).cloneProjection()
 
-    inline fun applyChange(level: Level, pos: BlockPos, func: P.() -> Unit) {
-        getProjection(level, pos).apply(func)
-        sendUpdateToProjectors(level, pos)
+    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)
+        }
     }
 
 }
diff --git a/common/src/main/kotlin/quaedam/projection/ProjectionBlock.kt b/common/src/main/kotlin/quaedam/projection/ProjectionBlock.kt
index a3af4e4..340171c 100644
--- a/common/src/main/kotlin/quaedam/projection/ProjectionBlock.kt
+++ b/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")
@@ -52,11 +59,4 @@ abstract class ProjectionBlock<P : ProjectionEffect>(properties: Properties = cr
         }
     }
 
-    fun sendUpdateToProjectors(level: Level, pos: BlockPos) {
-        if (!level.isClientSide) {
-            findNearbyProjectors(level, pos)
-                .forEach { (level.getBlockEntity(it) as ProjectorBlockEntity).checkUpdate() }
-        }
-    }
-
 }
diff --git a/common/src/main/kotlin/quaedam/projection/ProjectionEffect.kt b/common/src/main/kotlin/quaedam/projection/ProjectionEffect.kt
index e786252..ad3420c 100644
--- a/common/src/main/kotlin/quaedam/projection/ProjectionEffect.kt
+++ b/common/src/main/kotlin/quaedam/projection/ProjectionEffect.kt
@@ -10,17 +10,17 @@ import net.minecraft.server.level.ServerLevel
 import net.minecraft.world.level.Level
 import net.minecraft.world.level.block.state.BlockState
 
-abstract class ProjectionEffect {
+abstract class ProjectionEffect : Cloneable {
 
     abstract val type: ProjectionEffectType<*>
 
     abstract fun toNbt(tag: CompoundTag)
 
-    abstract fun fromNbt(tag: CompoundTag, trusted: Boolean)
+    abstract fun fromNbt(tag: CompoundTag, trusted: Boolean = true)
 
     fun toNbt() = CompoundTag().apply { toNbt(this) }
 
-    override fun equals(other: Any?) = other === this
+    override fun equals(other: Any?): Boolean = other === this
 
     override fun hashCode() = type.hashCode()
 
diff --git a/common/src/main/kotlin/quaedam/projection/SimpleProjectionEntity.kt b/common/src/main/kotlin/quaedam/projection/SimpleProjectionEntity.kt
index 14c09ae..edd9876 100644
--- a/common/src/main/kotlin/quaedam/projection/SimpleProjectionEntity.kt
+++ b/common/src/main/kotlin/quaedam/projection/SimpleProjectionEntity.kt
@@ -14,19 +14,20 @@ class SimpleProjectionEntity<P : ProjectionEffect>(
     type: BlockEntityType<SimpleProjectionEntity<P>>,
     pos: BlockPos,
     state: BlockState,
-    val projection: P
+    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(
+        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())
+                SimpleProjectionEntity(type.inner!!, pos, state, default(), default)
             }, block.get()).build(null)
             return type.inner!!
         }
@@ -41,11 +42,15 @@ class SimpleProjectionEntity<P : ProjectionEffect>(
 
     override fun load(tag: CompoundTag) {
         super.load(tag)
-        projection.fromNbt(tag.getCompound(TAG_PROJECTION_EFFECT), true)
+        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()) }
+
 }
\ No newline at end of file
diff --git a/common/src/main/kotlin/quaedam/projection/SimpleProjectionUpdate.kt b/common/src/main/kotlin/quaedam/projection/SimpleProjectionUpdate.kt
new file mode 100644
index 0000000..c6930d6
--- /dev/null
+++ b/common/src/main/kotlin/quaedam/projection/SimpleProjectionUpdate.kt
@@ -0,0 +1,63 @@
+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.resources.ResourceLocation
+import net.minecraft.server.level.ServerPlayer
+import quaedam.Quaedam
+import quaedam.utils.sendBlockUpdated
+
+object SimpleProjectionUpdate {
+
+    val id = ResourceLocation("quaedam", "simple_projection_update")
+
+    init {
+        NetworkManager.registerReceiver(NetworkManager.Side.C2S, id, ::handle)
+    }
+
+    private fun handle(buf: FriendlyByteBuf, ctx: PacketContext) {
+        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
+        }
+
+        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
+            }
+            blockEntity.sendBlockUpdated()
+            ProjectionBlock.sendUpdateToProjectors(level, pos)
+        }
+    }
+
+    fun send(pos: BlockPos, data: CompoundTag) {
+        val buf = FriendlyByteBuf(Unpooled.buffer())
+        buf.writeBlockPos(pos)
+        buf.writeNbt(data)
+        NetworkManager.sendToServer(id, buf)
+    }
+
+}
\ No newline at end of file
diff --git a/common/src/main/kotlin/quaedam/projection/misc/SkylightProjection.kt b/common/src/main/kotlin/quaedam/projection/misc/SkylightProjection.kt
index 1aa47e0..861cf4b 100644
--- a/common/src/main/kotlin/quaedam/projection/misc/SkylightProjection.kt
+++ b/common/src/main/kotlin/quaedam/projection/misc/SkylightProjection.kt
@@ -1,8 +1,15 @@
 package quaedam.projection.misc
 
+import net.minecraft.core.BlockPos
 import net.minecraft.nbt.CompoundTag
+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.state.BlockState
+import net.minecraft.world.phys.BlockHitResult
 import quaedam.Quaedam
 import quaedam.projection.EntityProjectionBlock
 import quaedam.projection.ProjectionEffect
@@ -38,6 +45,26 @@ object SkylightProjectionBlock : EntityProjectionBlock<SkylightProjectionEffect>
 
     override val blockEntity = SkylightProjection.blockEntity
 
+    override fun use(
+        blockState: BlockState,
+        level: Level,
+        blockPos: BlockPos,
+        player: Player,
+        interactionHand: InteractionHand,
+        blockHitResult: BlockHitResult
+    ): InteractionResult {
+        if (level.isClientSide) {
+            println("update")
+            applyChange(level, blockPos) {
+                factor -= 0.5
+                if (factor < 0.5) factor = 2.0
+                println("new factor: $factor")
+            }
+            return InteractionResult.CONSUME
+        }
+        return super.use(blockState, level, blockPos, player, interactionHand, blockHitResult)
+    }
+
 }
 
 data class SkylightProjectionEffect(var factor: Double = 2.0) : ProjectionEffect() {
diff --git a/common/src/main/kotlin/quaedam/projection/swarm/SwarmProjectionEffect.kt b/common/src/main/kotlin/quaedam/projection/swarm/SwarmProjectionEffect.kt
index 3f38c80..1f9ad21 100644
--- a/common/src/main/kotlin/quaedam/projection/swarm/SwarmProjectionEffect.kt
+++ b/common/src/main/kotlin/quaedam/projection/swarm/SwarmProjectionEffect.kt
@@ -26,7 +26,7 @@ data class SwarmProjectionEffect(
 
     override fun fromNbt(tag: CompoundTag, trusted: Boolean) {
         maxCount = tag.getInt(TAG_MAX_COUNT)
-        if (!trusted){
+        if (!trusted) {
             maxCount = min(maxCount, 250)
         }
     }
diff --git a/common/src/main/kotlin/quaedam/projector/ProjectorBlock.kt b/common/src/main/kotlin/quaedam/projector/ProjectorBlock.kt
index 0bc07da..5fe9832 100644
--- a/common/src/main/kotlin/quaedam/projector/ProjectorBlock.kt
+++ b/common/src/main/kotlin/quaedam/projector/ProjectorBlock.kt
@@ -39,6 +39,7 @@ object ProjectorBlock : Block(Properties.of()
         blockHitResult: BlockHitResult
     ): InteractionResult {
         checkUpdate(level, blockPos)
+        println(level.getBlockEntity(blockPos)!!.saveWithoutMetadata())
         return InteractionResult.SUCCESS
     }
 
diff --git a/gradle.properties b/gradle.properties
index b68309f..bf76fae 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,6 +2,7 @@ org.gradle.parallel=true
 org.gradle.caching=true
 org.gradle.jvmargs=-Xmx2048M
 minecraft_version=1.20.1
+parchment_version=2023.07.16
 # https://www.curseforge.com/minecraft/mc-mods/architectury-api
 architectury_version=9.1.10
 # https://files.minecraftforge.net/net/minecraftforge/forge/