Create reusable FX data and handler classes w/ common parameters

src/main/java/chylex/hee/game/fx/FxBlockData.kt

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+package chylex.hee.game.fx
+import chylex.hee.system.util.use
+import chylex.hee.system.util.writePos
+import io.netty.buffer.ByteBuf
+import net.minecraft.util.math.BlockPos
+
+class FxBlockData(private val pos: BlockPos) : IFxData{
+	override fun write(buffer: ByteBuf) = buffer.use {
+		writePos(pos)
+	}
+}

src/main/java/chylex/hee/game/fx/FxBlockHandler.kt

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+package chylex.hee.game.fx
+import chylex.hee.system.util.readPos
+import chylex.hee.system.util.use
+import io.netty.buffer.ByteBuf
+import net.minecraft.util.math.BlockPos
+import net.minecraft.world.World
+import java.util.Random
+
+abstract class FxBlockHandler : IFxHandler<FxBlockData>{
+	final override fun handle(buffer: ByteBuf, world: World, rand: Random) = buffer.use {
+		handle(readPos(), world, rand)
+	}
+	
+	abstract fun handle(pos: BlockPos, world: World, rand: Random)
+}

src/main/java/chylex/hee/game/fx/FxEntityData.kt

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+package chylex.hee.game.fx
+import chylex.hee.system.util.use
+import io.netty.buffer.ByteBuf
+import net.minecraft.entity.Entity
+
+class FxEntityData(private val entity: Entity) : IFxData{
+	override fun write(buffer: ByteBuf) = buffer.use {
+		writeInt(entity.entityId)
+	}
+}

src/main/java/chylex/hee/game/fx/FxEntityHandler.kt

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+package chylex.hee.game.fx
+import chylex.hee.system.util.use
+import io.netty.buffer.ByteBuf
+import net.minecraft.entity.Entity
+import net.minecraft.world.World
+import java.util.Random
+
+abstract class FxEntityHandler : IFxHandler<FxEntityData>{
+	final override fun handle(buffer: ByteBuf, world: World, rand: Random) = buffer.use {
+		world.getEntityByID(readInt())?.let { handle(it, rand) }
+	}
+	
+	abstract fun handle(entity: Entity, rand: Random)
+}

src/main/java/chylex/hee/game/fx/IFxData.kt

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+package chylex.hee.game.fx
+import io.netty.buffer.ByteBuf
+
+interface IFxData{
+	fun write(buffer: ByteBuf)
+}

src/main/java/chylex/hee/game/fx/IFxHandler.kt

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+package chylex.hee.game.fx
+import io.netty.buffer.ByteBuf
+import net.minecraft.world.World
+import java.util.Random
+
+@Suppress("unused")
+interface IFxHandler<T : IFxData>{
+	fun handle(buffer: ByteBuf, world: World, rand: Random)
+}