[WIP] Components

.gitignore

@@ -14,7 +14,6 @@ out
 !.idea/kotlinc.xml
 !.idea/statistic.xml
 !.idea/vcs.xml
-!.idea/shelf
 
 # eclipse
 bin

.idea/shelf/Datagen_Recipes.xml

@@ -1,4 +0,0 @@
-<changelist name="Datagen_Recipes" date="1601734824200" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Datagen_Recipes/shelved.patch" />
-  <option name="DESCRIPTION" value="Datagen Recipes" />
-</changelist>

.idea/shelf/Datagen_Recipes/shelved.patch

@@ -1,79 +0,0 @@
-Index: data/src/main/java/chylex/hee/datagen/DataGen.kt
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.BaseRevisionTextPatchEP
-<+>package chylex.hee.datagen\nimport chylex.hee.HEE\nimport chylex.hee.datagen.client.BlockItemModels\nimport chylex.hee.datagen.client.BlockModels\nimport chylex.hee.datagen.client.BlockStates\nimport chylex.hee.datagen.client.ItemModels\nimport chylex.hee.system.forge.SubscribeAllEvents\nimport chylex.hee.system.forge.SubscribeEvent\nimport net.minecraftforge.fml.common.Mod.EventBusSubscriber.Bus.MOD\nimport net.minecraftforge.fml.event.lifecycle.GatherDataEvent\n\n@SubscribeAllEvents(modid = HEE.ID, bus = MOD)\nobject DataGen{\n\t@SubscribeEvent\n\tfun register(e: GatherDataEvent){\n\t\tval modid = HEE.ID\n\t\tval helper = e.existingFileHelper\n\t\t\n\t\twith(e.generator){\n\t\t\tif (e.includeClient()){\n\t\t\t\taddProvider(BlockStates(this, modid, helper))\n\t\t\t\taddProvider(BlockModels(this, modid, helper))\n\t\t\t\taddProvider(BlockItemModels(this, modid, helper))\n\t\t\t\taddProvider(ItemModels(this, modid, helper))\n\t\t\t}\n\t\t}\n\t}\n}\n
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
---- a/data/src/main/java/chylex/hee/datagen/DataGen.kt	(revision f8888e0a3b33898551301124a0879cea12fc1f06)
-+++ b/data/src/main/java/chylex/hee/datagen/DataGen.kt	(date 1601732788951)
-@@ -4,6 +4,7 @@
- import chylex.hee.datagen.client.BlockModels
- import chylex.hee.datagen.client.BlockStates
- import chylex.hee.datagen.client.ItemModels
-+import chylex.hee.datagen.server.Recipes
- import chylex.hee.system.forge.SubscribeAllEvents
- import chylex.hee.system.forge.SubscribeEvent
- import net.minecraftforge.fml.common.Mod.EventBusSubscriber.Bus.MOD
-@@ -23,6 +24,10 @@
- 				addProvider(BlockItemModels(this, modid, helper))
- 				addProvider(ItemModels(this, modid, helper))
- 			}
-+			
-+			if (e.includeServer()){
-+				addProvider(Recipes(this))
-+			}
- 		}
- 	}
- }
-Index: data/src/main/java/chylex/hee/datagen/server/Recipes.kt
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
---- /dev/null	(date 1601733265753)
-+++ b/data/src/main/java/chylex/hee/datagen/server/Recipes.kt	(date 1601733265753)
-@@ -0,0 +1,15 @@
-+package chylex.hee.datagen.server
-+import chylex.hee.datagen.server.util.ingredients
-+import chylex.hee.datagen.server.util.shapeless
-+import chylex.hee.init.ModItems
-+import net.minecraft.data.DataGenerator
-+import net.minecraft.data.IFinishedRecipe
-+import net.minecraft.data.RecipeProvider
-+import net.minecraft.item.Items
-+import java.util.function.Consumer
-+
-+class Recipes(generator: DataGenerator) : RecipeProvider(generator){
-+	override fun registerRecipes(consumer: Consumer<IFinishedRecipe>) = with(consumer){
-+		shapeless(ModItems.ALTERATION_NEXUS, 1){ ingredients(Items.DIAMOND, Items.ENDER_EYE, ModItems.ANCIENT_DUST, ModItems.ETHEREUM) }
-+	}
-+}
-Index: data/src/main/java/chylex/hee/datagen/server/util/RecipeProviderExt.kt
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
---- /dev/null	(date 1601733249382)
-+++ b/data/src/main/java/chylex/hee/datagen/server/util/RecipeProviderExt.kt	(date 1601733249382)
-@@ -0,0 +1,20 @@
-+package chylex.hee.datagen.server.util
-+import net.minecraft.data.IFinishedRecipe
-+import net.minecraft.data.ShapedRecipeBuilder
-+import net.minecraft.data.ShapelessRecipeBuilder
-+import net.minecraft.util.IItemProvider
-+import java.util.function.Consumer
-+
-+fun Consumer<IFinishedRecipe>.shaped(result: IItemProvider, amount: Int, callback: ShapedRecipeBuilder.() -> Unit){
-+	ShapedRecipeBuilder(result, amount).apply(callback).build(this)
-+}
-+
-+fun Consumer<IFinishedRecipe>.shapeless(result: IItemProvider, amount: Int, callback: ShapelessRecipeBuilder.() -> Unit){
-+	ShapelessRecipeBuilder(result, amount).apply(callback).build(this)
-+}
-+
-+fun ShapelessRecipeBuilder.ingredients(vararg ingredients: IItemProvider){
-+	for(ingredient in ingredients){
-+		this.addIngredient(ingredient)
-+	}
-+}

.idea/shelf/Development3.xml

@@ -1,4 +0,0 @@
-<changelist name="Development3" date="1601983889370" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Development3/shelved.patch" />
-  <option name="DESCRIPTION" value="Development" />
-</changelist>

.idea/shelf/Dust.xml

@@ -1,4 +0,0 @@
-<changelist name="Dust" date="1590783410567" recycled="false">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Dust/shelved.patch" />
-  <option name="DESCRIPTION" value="Dust" />
-</changelist>

.idea/shelf/EnderEyeAttack_kt.xml

@@ -1,4 +0,0 @@
-<changelist name="EnderEyeAttack_kt" date="1601761992769" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/EnderEyeAttack_kt/shelved.patch" />
-  <option name="DESCRIPTION" value="EnderEyeAttack.kt" />
-</changelist>

.idea/shelf/Ender_Eye.xml

@@ -1,4 +0,0 @@
-<changelist name="Ender_Eye" date="1595119986895" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Ender_Eye/shelved.patch" />
-  <option name="DESCRIPTION" value="Ender Eye" />
-</changelist>

.idea/shelf/Ender_Eye_Stuff.xml

@@ -1,4 +0,0 @@
-<changelist name="Ender_Eye_Stuff" date="1601351827334" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Ender_Eye_Stuff/shelved.patch" />
-  <option name="DESCRIPTION" value="Ender Eye Stuff" />
-</changelist>

.idea/shelf/Eye.xml

@@ -1,4 +0,0 @@
-<changelist name="Eye" date="1605472809585" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Eye/shelved.patch" />
-  <option name="DESCRIPTION" value="Eye" />
-</changelist>

.idea/shelf/Ideas.xml

@@ -1,4 +0,0 @@
-<changelist name="Ideas" date="1595089578362" recycled="false">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Ideas/shelved.patch" />
-  <option name="DESCRIPTION" value="Ideas" />
-</changelist>

.idea/shelf/Later.xml

@@ -1,4 +0,0 @@
-<changelist name="Later" date="1579750352473" recycled="false">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Later/shelved.patch" />
-  <option name="DESCRIPTION" value="Later" />
-</changelist>

.idea/shelf/Later1.xml

@@ -1,4 +0,0 @@
-<changelist name="Later1" date="1607753523089" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Later1/shelved.patch" />
-  <option name="DESCRIPTION" value="Later" />
-</changelist>

.idea/shelf/Later2.xml

@@ -1,4 +0,0 @@
-<changelist name="Later2" date="1610732422264" recycled="false">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Later2/shelved.patch" />
-  <option name="DESCRIPTION" value="Later" />
-</changelist>

.idea/shelf/Later2/shelved.patch

@@ -1,19 +0,0 @@
-Index: src/system/src/main/java/chylex/hee/game/entity/EntitySelector.kt
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.BaseRevisionTextPatchEP
-<+>package chylex.hee.game.entity\n\nimport chylex.hee.system.math.square\nimport net.minecraft.entity.Entity\nimport net.minecraft.util.math.AxisAlignedBB\nimport net.minecraft.util.math.Vec3d\nimport net.minecraft.world.IEntityReader\nimport java.util.function.Predicate\n\n@Suppress(\"NOTHING_TO_INLINE\")\nclass EntitySelector(private val world: IEntityReader, private val predicate: Predicate<in Entity>) {\n\tfun <T : Entity> inBox(cls: Class<T>, aabb: AxisAlignedBB): List<T> {\n\t\treturn world.getEntitiesWithinAABB(cls, aabb, predicate)\n\t}\n\t\n\tfun <T : Entity> inRange(cls: Class<T>, point: Vec3d, range: Double): List<T> {\n\t\tval aabb = AxisAlignedBB(point.x - range, point.y - range, point.z - range, point.x + range, point.y + range, point.z + range)\n\t\tval rangeSq = square(range)\n\t\t\n\t\treturn world.getEntitiesWithinAABB(cls, aabb) { predicate.test(it) && it!!.posVec.squareDistanceTo(point) <= rangeSq }\n\t}\n\t\n\t// Reified\n\t\n\tinline fun <reified T : Entity> inBox(aabb: AxisAlignedBB) = inBox(T::class.java, aabb)\n\tinline fun <reified T : Entity> inRange(point: Vec3d, range: Double) = inRange(T::class.java, point, range)\n\t\n\t// General\n\t\n\tinline fun allInBox(aabb: AxisAlignedBB) = inBox(Entity::class.java, aabb)\n\tinline fun allInRange(point: Vec3d, range: Double) = inRange(Entity::class.java, point, range)\n}\n
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
-diff --git a/src/system/src/main/java/chylex/hee/game/entity/EntitySelector.kt b/src/system/src/main/java/chylex/hee/game/entity/EntitySelector.kt
---- a/src/system/src/main/java/chylex/hee/game/entity/EntitySelector.kt	(revision 276df769798cbd4fd8154c5ebca0001dd8639545)
-+++ b/src/system/src/main/java/chylex/hee/game/entity/EntitySelector.kt	(date 1609259090000)
-@@ -20,6 +20,8 @@
- 		return world.getEntitiesWithinAABB(cls, aabb) { predicate.test(it) && it!!.posVec.squareDistanceTo(point) <= rangeSq }
- 	}
- 	
-+	// TODO only loaded? fuck
-+	
- 	// Reified
- 	
- 	inline fun <reified T : Entity> inBox(aabb: AxisAlignedBB) = inBox(T::class.java, aabb)

.idea/shelf/Recipe_Datagen.xml

@@ -1,4 +0,0 @@
-<changelist name="Recipe_Datagen" date="1601740449134" recycled="false">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Recipe_Datagen/shelved.patch" />
-  <option name="DESCRIPTION" value="Recipe Datagen" />
-</changelist>

.idea/shelf/Recipe_Datagen/shelved.patch

@@ -1,47 +0,0 @@
-Index: data/src/main/java/chylex/hee/datagen/server/Recipes.kt
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
---- /dev/null	(date 1601740133630)
-+++ b/data/src/main/java/chylex/hee/datagen/server/Recipes.kt	(date 1601740133630)
-@@ -0,0 +1,11 @@
-+package chylex.hee.datagen.server
-+import net.minecraft.data.DataGenerator
-+import net.minecraft.data.IFinishedRecipe
-+import net.minecraft.data.RecipeProvider
-+import java.util.function.Consumer
-+
-+class Recipes(generator: DataGenerator) : RecipeProvider(generator){
-+	override fun registerRecipes(consumer: Consumer<IFinishedRecipe>) = with(consumer){
-+		// shapeless(ModItems.ALTERATION_NEXUS, 1){ ingredients(Items.DIAMOND, Items.ENDER_EYE, ModItems.ANCIENT_DUST, ModItems.ETHEREUM) }
-+	}
-+}
-Index: data/src/main/java/chylex/hee/datagen/server/util/RecipeProviderExt.kt
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
---- /dev/null	(date 1601734823610)
-+++ b/data/src/main/java/chylex/hee/datagen/server/util/RecipeProviderExt.kt	(date 1601734823610)
-@@ -0,0 +1,20 @@
-+package chylex.hee.datagen.server.util
-+import net.minecraft.data.IFinishedRecipe
-+import net.minecraft.data.ShapedRecipeBuilder
-+import net.minecraft.data.ShapelessRecipeBuilder
-+import net.minecraft.util.IItemProvider
-+import java.util.function.Consumer
-+
-+fun Consumer<IFinishedRecipe>.shaped(result: IItemProvider, amount: Int, callback: ShapedRecipeBuilder.() -> Unit){
-+	ShapedRecipeBuilder(result, amount).apply(callback).build(this)
-+}
-+
-+fun Consumer<IFinishedRecipe>.shapeless(result: IItemProvider, amount: Int, callback: ShapelessRecipeBuilder.() -> Unit){
-+	ShapelessRecipeBuilder(result, amount).apply(callback).build(this)
-+}
-+
-+fun ShapelessRecipeBuilder.ingredients(vararg ingredients: IItemProvider){
-+	for(ingredient in ingredients){
-+		this.addIngredient(ingredient)
-+	}
-+}

.idea/shelf/Shulker_Box_Animation.xml

@@ -1,4 +0,0 @@
-<changelist name="Shulker_Box_Animation" date="1590248312609" recycled="false">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Shulker_Box_Animation/shelved.patch" />
-  <option name="DESCRIPTION" value="Shulker Box Animation" />
-</changelist>

.idea/shelf/StructureFile.xml

@@ -1,4 +0,0 @@
-<changelist name="StructureFile" date="1601888541958" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/StructureFile/shelved.patch" />
-  <option name="DESCRIPTION" value="StructureFile" />
-</changelist>

.idea/shelf/TODO.xml

@@ -1,4 +0,0 @@
-<changelist name="TODO" date="1601072216412" recycled="false">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/TODO/shelved.patch" />
-  <option name="DESCRIPTION" value="TODO" />
-</changelist>

.idea/shelf/Territories.xml

@@ -1,14 +0,0 @@
-<changelist name="Territories" date="1593174807954" recycled="false">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Territories/shelved.patch" />
-  <option name="DESCRIPTION" value="Territories" />
-  <binary>
-    <option name="BEFORE_PATH" />
-    <option name="AFTER_PATH" value="src/main/resources/assets/hee/textures/environment/end_sky_blurry.png" />
-    <option name="SHELVED_PATH" value="$PROJECT_DIR$/.idea/shelf/Territories/end_sky_blurry.png" />
-  </binary>
-  <binary>
-    <option name="BEFORE_PATH" />
-    <option name="AFTER_PATH" value="src/main/resources/assets/hee/textures/environment/end_sky_smooth.png" />
-    <option name="SHELVED_PATH" value="$PROJECT_DIR$/.idea/shelf/Territories/end_sky_smooth.png" />
-  </binary>
-</changelist>

.idea/shelf/Territories/shelved.patch

@@ -1,24 +0,0 @@
-Index: src/main/java/chylex/hee/game/block/BlockDustyStoneUnstable.kt
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
---- a/src/main/java/chylex/hee/game/block/BlockDustyStoneUnstable.kt	(revision f6f631f6f3dc9b347b19db913cf2be4535813fc7)
-+++ b/src/main/java/chylex/hee/game/block/BlockDustyStoneUnstable.kt	(date 1590584304217)
-@@ -26,7 +26,6 @@
- import net.minecraft.util.math.shapes.EntitySelectionContext
- import net.minecraft.util.math.shapes.ISelectionContext
- import net.minecraft.util.math.shapes.VoxelShape
--import net.minecraft.util.math.shapes.VoxelShapes
- import net.minecraft.world.IBlockReader
- import net.minecraft.world.World
- import java.util.Random
-@@ -68,7 +67,7 @@
- 		return if (context is EntitySelectionContext && context.entity is EntityLivingBase)
- 			MagicValues.BLOCK_COLLISION_SHRINK_SHAPE
- 		else
--			VoxelShapes.fullCube()
-+			MagicValues.BLOCK_COLLISION_SHRINK_SHAPE //VoxelShapes.fullCube()
- 	}
- 	
- 	override fun causesSuffocation(state: BlockState, world: IBlockReader, pos: BlockPos): Boolean{

.idea/shelf/Work_on_Ender_Eye_spawn_animation__movement__and_attack_logic.xml

@@ -1,4 +0,0 @@
-<changelist name="Work_on_Ender_Eye_spawn_animation,_movement,_and_attack_logic" date="1601092950910" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/Work_on_Ender_Eye_spawn_animation,_movement,_and_attack_logic/shelved.patch" />
-  <option name="DESCRIPTION" value="Work on Ender Eye spawn animation, movement, and attack logic" />
-</changelist>

.idea/shelf/thing.xml

@@ -1,4 +0,0 @@
-<changelist name="thing" date="1608060366436" recycled="false">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/thing/shelved.patch" />
-  <option name="DESCRIPTION" value="thing" />
-</changelist>

.idea/shelf/thing/shelved.patch

@@ -1,74 +0,0 @@
-Index: src/main/resources/hee.mixins.json
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.BaseRevisionTextPatchEP
-<+>{\n  \"required\": true,\n  \"minVersion\": \"0.8\",\n  \"package\": \"chylex.hee.mixin\",\n  \"compatibilityLevel\": \"JAVA_8\",\n  \"mixins\": [\n    \"HookAnvilRepair\",\n    \"HookBlockDrops\",\n    \"HookChorusFlowerSoil\",\n    \"HookChorusPlantSoil\",\n    \"HookEffectCorruption\",\n    \"HookEffectInstanceCorruption\",\n    \"HookEndBiome\",\n    \"HookEndermanParticles\",\n    \"HookEndermiteParticles\",\n    \"HookEntityHelmetBreaking\",\n    \"HookEntityPotionCorruption\",\n    \"HookFireSpread\",\n    \"HookItemEntityLavaCheck\",\n    \"HookLightMapColors\",\n    \"HookPlayerInventoryArmorBreaking\",\n    \"HookPotionCreativeMenu\",\n    \"HookThornsArmorBreaking\"\n  ],\n  \"injectors\": {\n    \"defaultRequire\": 1\n  }\n}\n
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
-diff --git a/src/main/resources/hee.mixins.json b/src/main/resources/hee.mixins.json
---- a/src/main/resources/hee.mixins.json	(revision 7f9202bceb9aa7b8fac24437a2190a87857573a7)
-+++ b/src/main/resources/hee.mixins.json	(date 1608060366293)
-@@ -3,25 +3,7 @@
-   "minVersion": "0.8",
-   "package": "chylex.hee.mixin",
-   "compatibilityLevel": "JAVA_8",
--  "mixins": [
--    "HookAnvilRepair",
--    "HookBlockDrops",
--    "HookChorusFlowerSoil",
--    "HookChorusPlantSoil",
--    "HookEffectCorruption",
--    "HookEffectInstanceCorruption",
--    "HookEndBiome",
--    "HookEndermanParticles",
--    "HookEndermiteParticles",
--    "HookEntityHelmetBreaking",
--    "HookEntityPotionCorruption",
--    "HookFireSpread",
--    "HookItemEntityLavaCheck",
--    "HookLightMapColors",
--    "HookPlayerInventoryArmorBreaking",
--    "HookPotionCreativeMenu",
--    "HookThornsArmorBreaking"
--  ],
-+  "mixins": [ "HookAnvilRepair", "HookBlockDrops", "HookChorusFlowerSoil", "HookChorusPlantSoil", "HookEffectCorruption", "HookEffectInstanceCorruption", "HookElytraBreaking", "HookEndBiome", "HookEndermanParticles", "HookEndermiteParticles", "HookEntityHelmetBreaking", "HookEntityPotionCorruption", "HookFireSpread", "HookItemEntityLavaCheck", "HookLightMapColors", "HookPlayerInventoryArmorBreaking", "HookPotionCreativeMenu", "HookThornsArmorBreaking" ],
-   "injectors": {
-     "defaultRequire": 1
-   }
-Index: src/main/java/chylex/hee/mixin/HookElytraBreaking.java
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
-diff --git a/src/main/java/chylex/hee/mixin/HookElytraBreaking.java b/src/main/java/chylex/hee/mixin/HookElytraBreaking.java
-new file mode 100644
---- /dev/null	(date 1608060322378)
-+++ b/src/main/java/chylex/hee/mixin/HookElytraBreaking.java	(date 1608060322378)
-@@ -0,0 +1,27 @@
-+package chylex.hee.mixin;
-+
-+import chylex.hee.init.ModItems;
-+import net.minecraft.entity.LivingEntity;
-+import net.minecraft.entity.player.PlayerEntity;
-+import net.minecraft.item.ElytraItem;
-+import net.minecraft.item.ItemStack;
-+import org.spongepowered.asm.mixin.Mixin;
-+import org.spongepowered.asm.mixin.injection.At;
-+import org.spongepowered.asm.mixin.injection.Redirect;
-+import java.util.function.Consumer;
-+
-+@Mixin(ElytraItem.class)
-+public abstract class HookElytraBreaking{
-+	@Redirect(
-+		method = "elytraFlightTick",
-+		at = @At(value = "INVOKE", target = "Lnet/minecraft/item/ItemStack;damageItem(ILnet/minecraft/entity/LivingEntity;Ljava/util/function/Consumer;)V")
-+	)
-+	public void damageItem(final ItemStack stack, final int amount, final LivingEntity entity, final Consumer<LivingEntity> onBroken){
-+		final ItemStack originalStack = stack.copy();
-+		stack.damageItem(amount, entity, onBroken);
-+		
-+		if (ElytraItem.isUsable(originalStack) && !ElytraItem.isUsable(stack) && entity instanceof PlayerEntity){
-+			ModItems.RING_OF_PRESERVATION.onArmorDestroyed((PlayerEntity)entity, originalStack, stack);
-+		}
-+	}
-+}

.idea/shelf/todo1.xml

@@ -1,4 +0,0 @@
-<changelist name="todo1" date="1601711471885" recycled="true">
-  <option name="PATH" value="$PROJECT_DIR$/.idea/shelf/todo1/shelved.patch" />
-  <option name="DESCRIPTION" value="todo" />
-</changelist>

src/main/java/chylex/hee/game/block/BlockDustyStoneUnstable.kt

@@ -22,7 +22,6 @@ import net.minecraft.block.BlockState
 import net.minecraft.enchantment.EnchantmentHelper
 import net.minecraft.enchantment.Enchantments
 import net.minecraft.entity.Entity
-import net.minecraft.entity.EntitySpawnPlacementRegistry.PlacementType
 import net.minecraft.entity.EntityType
 import net.minecraft.util.math.BlockPos
 import net.minecraft.world.IBlockReader
@@ -48,6 +47,14 @@ class BlockDustyStoneUnstable(builder: BlockBuilder) : BlockDustyStone(builder),
 			
 			return null
 		}
+		
+		private fun isNonCreative(entity: Entity): Boolean {
+			return entity !is EntityPlayer || !entity.isCreative
+		}
+		
+		private fun isLightMob(entity: Entity): Boolean {
+			return entity.height <= 0.5F || (entity.height <= 1F && entity.width <= 0.5F)
+		}
 	}
 	
 	override fun canHarvestBlock(state: BlockState, world: IBlockReader, pos: BlockPos, player: EntityPlayer): Boolean {
@@ -87,7 +94,7 @@ class BlockDustyStoneUnstable(builder: BlockBuilder) : BlockDustyStone(builder),
 	}
 	
 	override fun onEntityCollisionAbove(world: World, pos: BlockPos, entity: Entity) {
-		if (!world.isRemote && world.totalTime % 4L == 0L && !(entity.height <= 0.5F || (entity.height <= 1F && entity.width <= 0.5F)) && isNonCreative(entity)) {
+		if (!world.isRemote && world.totalTime % 4L == 0L && !isLightMob(entity) && isNonCreative(entity)) {
 			if (!doCrumbleTest(world, pos)) {
 				return
 			}
@@ -103,7 +110,7 @@ class BlockDustyStoneUnstable(builder: BlockBuilder) : BlockDustyStone(builder),
 	}
 	
 	override fun onFallenUpon(world: World, pos: BlockPos, entity: Entity, fallDistance: Float) {
-		if (!world.isRemote && entity is EntityLivingBase && fallDistance > 1.3F && isNonCreative(entity)) {
+		if (!world.isRemote && entity is EntityLivingBase && fallDistance > (if (isLightMob(entity)) 3.3F else 1.3F) && isNonCreative(entity)) {
 			val rand = world.rand
 			val aabb = entity.boundingBox
 			val y = pos.y
@@ -135,12 +142,8 @@ class BlockDustyStoneUnstable(builder: BlockBuilder) : BlockDustyStone(builder),
 		super.onFallenUpon(world, pos, entity, fallDistance)
 	}
 	
-	override fun canCreatureSpawn(state: BlockState, world: IBlockReader, pos: BlockPos, placementType: PlacementType, entityType: EntityType<*>?): Boolean {
+	override fun canEntitySpawn(state: BlockState, world: IBlockReader, pos: BlockPos, entityType: EntityType<*>): Boolean {
-		return super.canCreatureSpawn(state, world, pos, placementType, entityType) && getCrumbleStartPos(world, pos) == null
+		return super.canEntitySpawn(state, world, pos, entityType) && getCrumbleStartPos(world, pos) == null
-	}
-	
-	private fun isNonCreative(entity: Entity): Boolean {
-		return entity !is EntityPlayer || !entity.isCreative
 	}
 	
 	private fun doCrumbleTest(world: World, pos: BlockPos): Boolean {

src/main/java/chylex/hee/game/block/BlockGloomrock.kt

@@ -9,14 +9,13 @@ import chylex.hee.game.entity.technical.EntityTechnicalTrigger.Types.ENERGY_SHRI
 import chylex.hee.game.world.center
 import chylex.hee.game.world.feature.energyshrine.EnergyShrinePieces
 import net.minecraft.block.BlockState
-import net.minecraft.entity.EntitySpawnPlacementRegistry.PlacementType
 import net.minecraft.entity.EntityType
 import net.minecraft.util.math.BlockPos
 import net.minecraft.world.IBlockReader
 import net.minecraft.world.IEntityReader
 
 class BlockGloomrock(builder: BlockBuilder) : BlockSimple(builder) {
-	override fun canCreatureSpawn(state: BlockState, world: IBlockReader, pos: BlockPos, type: PlacementType, entityType: EntityType<*>?): Boolean {
+	override fun canEntitySpawn(state: BlockState, world: IBlockReader, pos: BlockPos, entityType: EntityType<*>?): Boolean {
 		if (world !is IEntityReader) {
 			HEE.log.warn("[BlockGloomrock] attempted to check spawn on a world != IEntityReader (${world.javaClass})")
 			return false

src/main/java/chylex/hee/game/block/BlockGraveDirt.kt

@@ -25,6 +25,7 @@ import chylex.hee.system.random.nextFloat
 import chylex.hee.system.random.nextInt
 import net.minecraft.block.Block
 import net.minecraft.block.BlockState
+import net.minecraft.entity.EntityType
 import net.minecraft.item.BlockItemUseContext
 import net.minecraft.item.ItemStack
 import net.minecraft.state.StateContainer.Builder
@@ -88,6 +89,12 @@ open class BlockGraveDirt(builder: BlockBuilder) : BlockSimpleShaped(builder, Ax
 			super.getShape(state, source, pos, context)
 	}
 	
+	// Mobs
+	
+	override fun canEntitySpawn(state: BlockState, worldIn: IBlockReader, pos: BlockPos, type: EntityType<*>): Boolean {
+		return true
+	}
+	
 	// Explosions
 	
 	override fun canDropFromExplosion(explosion: Explosion): Boolean {

src/main/java/chylex/hee/game/entity/living/EntityMobAngryEnderman.kt

@@ -76,8 +76,8 @@ class EntityMobAngryEnderman(type: EntityType<EntityMobAngryEnderman>, world: Wo
 	}
 	
 	override fun updateAITasks() {
-		teleportHandler.update()
+		teleportHandler.tickServer()
-		waterHandler.update()
+		waterHandler.tickServer()
 		
 		val currentTarget = attackTarget
 		

src/main/java/chylex/hee/game/entity/living/EntityMobEnderman.kt

@@ -26,6 +26,10 @@ import chylex.hee.game.mechanics.causatum.events.CausatumEventEndermanKill
 import chylex.hee.game.world.playServer
 import chylex.hee.init.ModEntities
 import chylex.hee.init.ModSounds
+import chylex.hee.system.component.EntityComponents
+import chylex.hee.system.component.general.deserializeFrom
+import chylex.hee.system.component.general.serializeTo
+import chylex.hee.system.component.general.tick
 import chylex.hee.system.facades.Resource
 import chylex.hee.system.forge.SubscribeAllEvents
 import chylex.hee.system.forge.SubscribeEvent
@@ -76,8 +80,6 @@ class EntityMobEnderman(type: EntityType<EntityMobEnderman>, world: World) : Ent
 	
 	@SubscribeAllEvents(modid = HEE.ID)
 	companion object {
-		private const val TELEPORT_HANDLER_TAG = "Teleport"
-		private const val WATER_HANDLER_TAG = "Water"
 		private const val CAN_PICK_UP_BLOCKS_TAG = "CanPickUpBlocks"
 		private const val HELD_BLOCK_TIMER_TAG = "HeldBlockTimer"
 		private const val HELD_BLOCK_DESPAWNS_TAG = "HeldBlockDespawns"
@@ -202,8 +204,9 @@ class EntityMobEnderman(type: EntityType<EntityMobEnderman>, world: World) : Ent
 	
 	// Instance
 	
+	private lateinit var components: EntityComponents
+	
 	private lateinit var teleportHandler: EndermanTeleportHandler
-	private lateinit var waterHandler: EndermanWaterHandler
 	private lateinit var blockHandler: EndermanBlockHandler
 	
 	private lateinit var aiAttackTarget: AIToggle
@@ -227,6 +230,13 @@ class EntityMobEnderman(type: EntityType<EntityMobEnderman>, world: World) : Ent
 	
 	// Initialization
 	
+	override fun registerData() {
+		super.registerData()
+		
+		components = EntityComponents()
+		components.attach(EndermanWaterHandler(this, takeDamageAfterWetTicks = 80))
+	}
+	
 	override fun registerAttributes() {
 		super.registerAttributes()
 		
@@ -238,8 +248,7 @@ class EntityMobEnderman(type: EntityType<EntityMobEnderman>, world: World) : Ent
 	}
 	
 	override fun registerGoals() {
-		teleportHandler = EndermanTeleportHandler(this)
+		teleportHandler = EndermanTeleportHandler(this).also(components::attach)
-		waterHandler = EndermanWaterHandler(this, takeDamageAfterWetTicks = 80)
 		blockHandler = EndermanBlockHandler(this)
 		
 		aiWatchTargetInShock = AIWatchTargetInShock(this, maxDistance = 72.0)
@@ -265,10 +274,9 @@ class EntityMobEnderman(type: EntityType<EntityMobEnderman>, world: World) : Ent
 	override fun livingTick() {
 		super.livingTick()
 		
+		components.tick(this)
+		
 		if (!world.isRemote) {
-			teleportHandler.update()
-			waterHandler.update()
-			
 			if (heldBlockTimer > 0 && --heldBlockTimer == 0.toShort()) {
 				if (heldBlockDespawns || !blockHandler.tryPlaceBlock(allowPlayerProximity = false)) {
 					teleportHandler.teleportOutOfWorld(force = rand.nextBoolean())
@@ -536,8 +544,7 @@ class EntityMobEnderman(type: EntityType<EntityMobEnderman>, world: World) : Ent
 	override fun writeAdditional(nbt: TagCompound) = nbt.heeTag.use {
 		super.writeAdditional(nbt)
 		
-		put(TELEPORT_HANDLER_TAG, teleportHandler.serializeNBT())
+		components.serializeTo(this)
-		put(WATER_HANDLER_TAG, waterHandler.serializeNBT())
 		
 		putBoolean(CAN_PICK_UP_BLOCKS_TAG, aiPickUpBlocks.enabled)
 		putShort(HELD_BLOCK_TIMER_TAG, heldBlockTimer)
@@ -547,8 +554,7 @@ class EntityMobEnderman(type: EntityType<EntityMobEnderman>, world: World) : Ent
 	override fun readAdditional(nbt: TagCompound) = nbt.heeTag.use {
 		super.readAdditional(nbt)
 		
-		teleportHandler.deserializeNBT(getCompound(TELEPORT_HANDLER_TAG))
+		components.deserializeFrom(this)
-		waterHandler.deserializeNBT(getCompound(WATER_HANDLER_TAG))
 		
 		aiPickUpBlocks.enabled = getBoolean(CAN_PICK_UP_BLOCKS_TAG)
 		heldBlockTimer = getShort(HELD_BLOCK_TIMER_TAG)

src/main/java/chylex/hee/game/entity/living/EntityMobSpiderling.kt

@@ -56,11 +56,15 @@ import net.minecraft.block.BlockState
 import net.minecraft.entity.CreatureAttribute
 import net.minecraft.entity.Entity
 import net.minecraft.entity.EntityType
+import net.minecraft.entity.ILivingEntityData
 import net.minecraft.entity.SharedMonsterAttributes.ATTACK_DAMAGE
 import net.minecraft.entity.SharedMonsterAttributes.FOLLOW_RANGE
 import net.minecraft.entity.SharedMonsterAttributes.MAX_HEALTH
 import net.minecraft.entity.SharedMonsterAttributes.MOVEMENT_SPEED
+import net.minecraft.entity.SpawnReason
+import net.minecraft.entity.SpawnReason.SPAWNER
 import net.minecraft.entity.ai.attributes.AttributeModifier
+import net.minecraft.nbt.CompoundNBT
 import net.minecraft.network.IPacket
 import net.minecraft.network.datasync.DataSerializers
 import net.minecraft.pathfinding.PathNavigator
@@ -76,6 +80,8 @@ import net.minecraft.util.math.RayTraceResult.Type
 import net.minecraft.util.math.Vec3d
 import net.minecraft.world.Difficulty.HARD
 import net.minecraft.world.Difficulty.NORMAL
+import net.minecraft.world.DifficultyInstance
+import net.minecraft.world.IWorld
 import net.minecraft.world.IWorldReader
 import net.minecraft.world.LightType.BLOCK
 import net.minecraft.world.LightType.SKY
@@ -213,7 +219,7 @@ class EntityMobSpiderling(type: EntityType<EntityMobSpiderling>, world: World) :
 		}
 		else if (wakeUpTimer > 0) {
 			if (--wakeUpTimer == 0) {
-				wakeUp(instant = false, preventSleep = false)
+				wakeUp(preventSleep = false)
 			}
 		}
 		else if (ticksExisted % 4 == 0) {
@@ -291,10 +297,18 @@ class EntityMobSpiderling(type: EntityType<EntityMobSpiderling>, world: World) :
 		}
 	}
 	
-	private fun wakeUp(instant: Boolean, preventSleep: Boolean) {
+	fun wakeUpInstantly(preventSleep: Boolean) {
+		wakeUp(preventSleep, aiDelayTicks = 1)
+	}
+	
+	fun wakeUp(preventSleep: Boolean) {
+		wakeUp(preventSleep, aiDelayTicks = rand.nextInt(25, 40))
+	}
+	
+	fun wakeUp(preventSleep: Boolean, aiDelayTicks: Int) {
 		if (isSleeping) {
 			isSleepingProp = false
-			wakeUpDelayAI = if (instant) 1 else rand.nextInt(25, 40)
+			wakeUpDelayAI = aiDelayTicks
 			
 			if (preventSleep) {
 				canSleepAgain = false
@@ -303,7 +317,7 @@ class EntityMobSpiderling(type: EntityType<EntityMobSpiderling>, world: World) :
 	}
 	
 	override fun setFire(seconds: Int) {
-		wakeUp(instant = true, preventSleep = true)
+		wakeUpInstantly(preventSleep = true)
 		super.setFire(seconds)
 	}
 	
@@ -314,7 +328,7 @@ class EntityMobSpiderling(type: EntityType<EntityMobSpiderling>, world: World) :
 	// Behavior (Light)
 	
 	override fun onLightStartled(): Boolean {
-		wakeUp(instant = false, preventSleep = true)
+		wakeUp(preventSleep = true)
 		
 		if (world.totalTime < lightStartleResetTime) {
 			return false
@@ -401,7 +415,7 @@ class EntityMobSpiderling(type: EntityType<EntityMobSpiderling>, world: World) :
 			return false
 		}
 		
-		wakeUp(instant = true, preventSleep = true)
+		wakeUpInstantly(preventSleep = true)
 		
 		if (!super.attackEntityFrom(source, if (source.isFireDamage) amount * 1.25F else amount)) {
 			return false
@@ -445,6 +459,16 @@ class EntityMobSpiderling(type: EntityType<EntityMobSpiderling>, world: World) :
 		return true
 	}
 	
+	// Spawning
+	
+	override fun onInitialSpawn(world: IWorld, difficulty: DifficultyInstance, reason: SpawnReason, data: ILivingEntityData?, nbt: CompoundNBT?): ILivingEntityData? {
+		if (reason == SPAWNER) {
+			wakeUpInstantly(preventSleep = true)
+		}
+		
+		return super.onInitialSpawn(world, difficulty, reason, data, nbt)
+	}
+	
 	// Despawning
 	
 	override fun isDespawnPeaceful(): Boolean {
@@ -515,7 +539,7 @@ class EntityMobSpiderling(type: EntityType<EntityMobSpiderling>, world: World) :
 		val sleepState = getInt(SLEEP_STATE_TAG)
 		
 		if (sleepState != 2) {
-			wakeUp(instant = true, preventSleep = sleepState != 1)
+			wakeUpInstantly(preventSleep = sleepState != 1)
 		}
 		
 		lightStartleResetTime = getLong(LIGHT_STARTLE_RESET_TIME_TAG)

src/main/java/chylex/hee/game/entity/living/EntityMobUndread.kt

@@ -137,19 +137,19 @@ class EntityMobUndread(type: EntityType<EntityMobUndread>, world: World) : Entit
 		super.onDeathUpdate()
 	}
 	
-	override fun playStepSound(pos: BlockPos, state: BlockState) {
+	public override fun playStepSound(pos: BlockPos, state: BlockState) {
 		playSound(Sounds.ENTITY_ZOMBIE_STEP, rand.nextFloat(0.4F, 0.5F), rand.nextFloat(0.9F, 1F))
 	}
 	
-	override fun getHurtSound(source: DamageSource): SoundEvent {
+	public override fun getHurtSound(source: DamageSource): SoundEvent {
 		return ModSounds.MOB_UNDREAD_HURT
 	}
 	
-	override fun getDeathSound(): SoundEvent {
+	public override fun getDeathSound(): SoundEvent {
 		return ModSounds.MOB_UNDREAD_DEATH
 	}
 	
-	override fun getSoundPitch(): Float {
+	public override fun getSoundPitch(): Float {
 		return rand.nextFloat(0.8F, 1F)
 	}
 }

src/main/java/chylex/hee/game/entity/living/behavior/EnderEyeSpawnerParticles.kt

@@ -7,8 +7,8 @@ import chylex.hee.game.particle.spawner.ParticleSpawnerCustom
 import chylex.hee.game.particle.spawner.properties.IShape.Point
 import chylex.hee.game.world.bottomCenter
 import chylex.hee.network.client.PacketClientFX
-import chylex.hee.network.fx.IFxData
+import chylex.hee.network.fx.FxVecData
-import chylex.hee.network.fx.IFxHandler
+import chylex.hee.network.fx.FxVecHandler
 import chylex.hee.system.color.IntColor.Companion.RGB
 import chylex.hee.system.math.Vec
 import chylex.hee.system.math.Vec3
@@ -21,10 +21,7 @@ import chylex.hee.system.serialization.NBTList.Companion.putList
 import chylex.hee.system.serialization.NBTObjectList
 import chylex.hee.system.serialization.TagCompound
 import chylex.hee.system.serialization.getListOfCompounds
-import chylex.hee.system.serialization.readVec
 import chylex.hee.system.serialization.use
-import chylex.hee.system.serialization.writeVec
-import net.minecraft.network.PacketBuffer
 import net.minecraft.util.math.BlockPos
 import net.minecraft.util.math.Vec3d
 import net.minecraft.world.World
@@ -50,15 +47,9 @@ class EnderEyeSpawnerParticles(private val entity: EntityBossEnderEye) : INBTSer
 			hideOnMinimalSetting = false
 		)
 		
-		class ParticleData(private val point: Vec3d) : IFxData {
+		val FX_PARTICLE = object : FxVecHandler() {
-			override fun write(buffer: PacketBuffer) = buffer.use {
+			override fun handle(world: World, rand: Random, vec: Vec3d) {
-				writeVec(point)
+				PARTICLE_TICK.spawn(Point(vec, 2), rand)
-			}
-		}
-		
-		val FX_PARTICLE = object : IFxHandler<ParticleData> {
-			override fun handle(buffer: PacketBuffer, world: World, rand: Random) = buffer.use {
-				PARTICLE_TICK.spawn(Point(readVec(), 2), rand)
 			}
 		}
 	}
@@ -95,7 +86,7 @@ class EnderEyeSpawnerParticles(private val entity: EntityBossEnderEye) : INBTSer
 					else           -> 1.0
 				}
 				
-				PacketClientFX(FX_PARTICLE, ParticleData(pos.addY(sqrt(progressCurvePoint) * 6.0))).sendToAllAround(entity.world, pos, 256.0)
+				PacketClientFX(FX_PARTICLE, FxVecData(pos.addY(sqrt(progressCurvePoint) * 6.0))).sendToAllAround(entity.world, pos, 256.0)
 			}
 			
 			if (distSq > prevDistSq || distSq < square(0.15)) {

src/main/java/chylex/hee/game/entity/living/behavior/EndermanTeleportHandler.kt

@@ -29,6 +29,8 @@ import chylex.hee.network.client.PacketClientFX
 import chylex.hee.network.fx.FxEntityData
 import chylex.hee.network.fx.FxEntityHandler
 import chylex.hee.system.color.IntColor.Companion.RGB
+import chylex.hee.system.component.general.SerializableComponent
+import chylex.hee.system.component.general.TickableComponent
 import chylex.hee.system.math.Vec
 import chylex.hee.system.math.Vec3
 import chylex.hee.system.math.addY
@@ -53,13 +55,12 @@ import net.minecraft.util.SoundCategory
 import net.minecraft.util.math.AxisAlignedBB
 import net.minecraft.util.math.BlockPos
 import net.minecraft.util.math.Vec3d
-import net.minecraftforge.common.util.INBTSerializable
 import java.util.Random
 import java.util.UUID
 import kotlin.math.min
 import kotlin.math.sqrt
 
-class EndermanTeleportHandler(private val enderman: EntityMobAbstractEnderman) : INBTSerializable<TagCompound> {
+class EndermanTeleportHandler(private val enderman: EntityMobAbstractEnderman) : TickableComponent, SerializableComponent {
 	companion object {
 		private const val DEFAULT_RESTORE_Y = -256.0
 		
@@ -117,6 +118,9 @@ class EndermanTeleportHandler(private val enderman: EntityMobAbstractEnderman) :
 		}
 	}
 	
+	override val serializationKey
+		get() = "Teleport"
+	
 	val preventDespawn
 		get() = tpDelayTicks > 0
 	
@@ -133,7 +137,7 @@ class EndermanTeleportHandler(private val enderman: EntityMobAbstractEnderman) :
 	
 	private var lastDodged: UUID? = null
 	
-	fun update() {
+	override fun tickServer() {
 		if (tpCooldown > 0) {
 			--tpCooldown
 		}

src/main/java/chylex/hee/game/entity/living/behavior/EndermanWaterHandler.kt

@@ -4,15 +4,16 @@ import chylex.hee.game.entity.OPERATION_MUL_INCR_INDIVIDUAL
 import chylex.hee.game.entity.living.EntityMobAbstractEnderman
 import chylex.hee.game.entity.tryApplyModifier
 import chylex.hee.game.entity.tryRemoveModifier
+import chylex.hee.system.component.general.SerializableComponent
+import chylex.hee.system.component.general.TickableComponent
 import chylex.hee.system.random.nextInt
 import chylex.hee.system.serialization.TagCompound
 import chylex.hee.system.serialization.use
 import net.minecraft.entity.SharedMonsterAttributes.ATTACK_DAMAGE
 import net.minecraft.entity.ai.attributes.AttributeModifier
 import net.minecraft.util.DamageSource
-import net.minecraftforge.common.util.INBTSerializable
 
-class EndermanWaterHandler(private val enderman: EntityMobAbstractEnderman, private val takeDamageAfterWetTicks: Int) : INBTSerializable<TagCompound> {
+class EndermanWaterHandler(private val enderman: EntityMobAbstractEnderman, private val takeDamageAfterWetTicks: Int) : TickableComponent, SerializableComponent {
 	private companion object {
 		private val DEBUFF_WEAKNESS = AttributeModifier("Water weakness", -0.5, OPERATION_MUL_INCR_INDIVIDUAL)
 		
@@ -20,10 +21,13 @@ class EndermanWaterHandler(private val enderman: EntityMobAbstractEnderman, priv
 		private const val DEBUFF_TICKS_TAG = "DebuffTicks"
 	}
 	
+	override val serializationKey
+		get() = "Water"
+	
 	private var wetCounter = 0
 	private var debuffTicks = 0
 	
-	fun update() {
+	override fun tickServer() {
 		val isWet = enderman.isWet
 		
 		if (isWet) {

src/main/java/chylex/hee/game/entity/technical/EntityTechnicalTrigger.kt

@@ -67,7 +67,7 @@ class EntityTechnicalTrigger(type: EntityType<EntityTechnicalTrigger>, world: Wo
 		STRONGHOLD_TRAP_TALL_INTERSECTION({ StrongholdRoom_Trap_TallIntersection.Trigger }),
 		ENERGY_SHRINE_GENERATOR({ EnergyShrineGenerator.GeneratorTrigger }),
 		ENERGY_SHRINE_GLOBAL({ EnergyShrineRoom_Main_Start.Particles }),
-		TOMB_DUNGEON_UNDREAD_SPAWNER(TombDungeonRoom_Tomb::UndreadSpawnerTrigger),
+		TOMB_DUNGEON_UNDREAD_SPAWNER(TombDungeonRoom_Tomb::MobSpawnerTrigger),
 		OBSIDIAN_TOWER_TOP_GLOWSTONE(ObsidianTowerLevel_Top::GlowstoneTrigger),
 		OBSIDIAN_TOWER_DEATH_ANIMATION(ObsidianTowerLevel_Top::DeathAnimationTrigger)
 	}

src/main/java/chylex/hee/game/item/ItemAbstractEnergyUser.kt

@@ -3,6 +3,7 @@ package chylex.hee.game.item
 import chylex.hee.game.block.entity.TileEntityEnergyCluster
 import chylex.hee.game.inventory.heeTag
 import chylex.hee.game.inventory.heeTagOrNull
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.mechanics.energy.IEnergyQuantity
 import chylex.hee.game.mechanics.energy.IEnergyQuantity.Units
 import chylex.hee.game.particle.ParticleEnergyTransferToPlayer
@@ -36,11 +37,11 @@ import chylex.hee.system.serialization.use
 import chylex.hee.system.serialization.writePos
 import net.minecraft.client.util.ITooltipFlag
 import net.minecraft.entity.Entity
-import net.minecraft.item.Item
 import net.minecraft.item.ItemStack
 import net.minecraft.item.ItemUseContext
 import net.minecraft.network.PacketBuffer
 import net.minecraft.util.ActionResultType
+import net.minecraft.util.math.BlockPos
 import net.minecraft.util.math.MathHelper
 import net.minecraft.util.text.ITextComponent
 import net.minecraft.util.text.TranslationTextComponent
@@ -50,7 +51,7 @@ import java.util.Random
 import kotlin.math.max
 import kotlin.math.pow
 
-abstract class ItemAbstractEnergyUser(properties: Properties) : Item(properties) {
+abstract class ItemAbstractEnergyUser(properties: Properties) : ItemWithComponents(properties), UseOnBlockComponent {
 	companion object {
 		private const val ENERGY_LEVEL_TAG = "EnergyLevel"
 		
@@ -100,6 +101,8 @@ abstract class ItemAbstractEnergyUser(properties: Properties) : Item(properties)
 	init {
 		@Suppress("DEPRECATION")
 		require(maxStackSize == 1) { "energy item must have a maximum stack size of 1" }
+		
+		components.attach(this)
 	}
 	
 	protected abstract fun getEnergyCapacity(stack: ItemStack): Units
@@ -163,15 +166,11 @@ abstract class ItemAbstractEnergyUser(properties: Properties) : Item(properties)
 	
 	// Energy charging
 	
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType? {
-		val player = context.player ?: return FAIL
-		val world = context.world
-		val pos = context.pos
-		
 		val tile = pos.getTile<TileEntityEnergyCluster>(world)
-		val stack = player.getHeldItem(context.hand)
+		val stack = player.getHeldItem(ctx.hand)
 		
-		if (tile == null || !player.canPlayerEdit(pos, context.face, stack)) {
+		if (tile == null || !player.canPlayerEdit(pos, ctx.face, stack)) {
 			return FAIL
 		}
 		else if (world.isRemote) {

src/main/java/chylex/hee/game/item/ItemAbstractInfusable.kt

@@ -13,7 +13,7 @@ import net.minecraft.util.text.StringTextComponent
 import net.minecraft.util.text.TranslationTextComponent
 import net.minecraft.world.World
 
-abstract class ItemAbstractInfusable(properties: Properties) : Item(properties), IInfusableItem {
+abstract class ItemAbstractInfusable(properties: Properties) : ItemWithComponents(properties), IInfusableItem {
 	companion object {
 		fun onCanApplyInfusion(item: Item, infusion: Infusion): Boolean {
 			return infusion.targetItems.contains(item)

src/main/java/chylex/hee/game/item/ItemCompost.kt

@@ -1,6 +1,7 @@
 package chylex.hee.game.item
 
 import chylex.hee.game.inventory.size
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.world.BlockEditor
 import chylex.hee.init.ModItems
 import chylex.hee.network.client.PacketClientFX
@@ -15,7 +16,6 @@ import chylex.hee.system.migration.ItemBoneMeal
 import net.minecraft.block.DispenserBlock.FACING
 import net.minecraft.dispenser.IBlockSource
 import net.minecraft.dispenser.OptionalDispenseBehavior
-import net.minecraft.item.Item
 import net.minecraft.item.ItemStack
 import net.minecraft.item.ItemUseContext
 import net.minecraft.util.ActionResultType
@@ -25,7 +25,7 @@ import net.minecraft.world.server.ServerWorld
 import net.minecraftforge.common.util.FakePlayerFactory
 import java.util.Random
 
-class ItemCompost(properties: Properties) : Item(properties) {
+class ItemCompost(properties: Properties) : ItemWithComponents(properties) {
 	companion object {
 		private const val BONE_MEAL_EQUIVALENT = 2
 		
@@ -61,6 +61,24 @@ class ItemCompost(properties: Properties) : Item(properties) {
 	}
 	
 	init {
+		components.attach(object : UseOnBlockComponent {
+			override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType {
+				if (!BlockEditor.canEdit(pos, player, item)) {
+					return FAIL
+				}
+				else if (world.isRemote) {
+					return SUCCESS
+				}
+				
+				if (applyCompost(world, pos, player)) {
+					item.shrink(1)
+					return SUCCESS
+				}
+				
+				return PASS
+			}
+		})
+		
 		BlockDispenser.registerDispenseBehavior(this, object : OptionalDispenseBehavior() {
 			override fun dispenseStack(source: IBlockSource, stack: ItemStack): ItemStack {
 				val world = source.world
@@ -77,26 +95,4 @@ class ItemCompost(properties: Properties) : Item(properties) {
 			}
 		})
 	}
-	
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
-		val player = context.player ?: return FAIL
-		val world = context.world
-		val pos = context.pos
-		
-		val heldItem = player.getHeldItem(context.hand)
-		
-		if (!BlockEditor.canEdit(pos, player, heldItem)) {
-			return FAIL
-		}
-		else if (world.isRemote) {
-			return SUCCESS
-		}
-		
-		if (applyCompost(world, pos, player)) {
-			heldItem.shrink(1)
-			return SUCCESS
-		}
-		
-		return PASS
-	}
 }

src/main/java/chylex/hee/game/item/ItemEndPowder.kt

@@ -2,27 +2,27 @@ package chylex.hee.game.item
 
 import chylex.hee.game.block.IBlockDeathFlowerDecaying
 import chylex.hee.game.entity.item.EntityItemCauldronTrigger
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.world.BlockEditor
 import chylex.hee.game.world.getBlock
 import chylex.hee.system.migration.ActionResult.FAIL
 import chylex.hee.system.migration.ActionResult.PASS
 import chylex.hee.system.migration.ActionResult.SUCCESS
+import chylex.hee.system.migration.EntityPlayer
 import net.minecraft.entity.Entity
-import net.minecraft.item.Item
 import net.minecraft.item.ItemStack
 import net.minecraft.item.ItemUseContext
 import net.minecraft.util.ActionResultType
+import net.minecraft.util.math.BlockPos
 import net.minecraft.world.World
 
-class ItemEndPowder(properties: Properties) : Item(properties) {
+class ItemEndPowder(properties: Properties) : ItemWithComponents(properties), UseOnBlockComponent {
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	init {
-		val player = context.player ?: return FAIL
+		components.attach(this)
-		val world = context.world
+	}
-		val pos = context.pos
+	
-		
+	override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType? {
-		val heldItem = player.getHeldItem(context.hand)
+		if (!BlockEditor.canEdit(pos, player, item)) {
-		
-		if (!BlockEditor.canEdit(pos, player, heldItem)) {
 			return FAIL
 		}
 		
@@ -33,7 +33,7 @@ class ItemEndPowder(properties: Properties) : Item(properties) {
 				block.healDeathFlower(world, pos)
 			}
 			
-			heldItem.shrink(1)
+			item.shrink(1)
 			return SUCCESS
 		}
 		

src/main/java/chylex/hee/game/item/ItemEnergyOracle.kt

@@ -28,7 +28,6 @@ import chylex.hee.system.math.angleBetween
 import chylex.hee.system.math.floorToInt
 import chylex.hee.system.math.over
 import chylex.hee.system.math.toDegrees
-import chylex.hee.system.migration.ActionResult.FAIL
 import chylex.hee.system.migration.ActionResult.SUCCESS
 import chylex.hee.system.migration.EntityLivingBase
 import chylex.hee.system.migration.EntityPlayer
@@ -150,17 +149,13 @@ class ItemEnergyOracle(properties: Properties) : ItemAbstractEnergyUser(properti
 		return ItemAbstractInfusable.onCanApplyInfusion(this, infusion)
 	}
 	
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType? {
-		val player = context.player ?: return FAIL
-		val world = context.world
-		val pos = context.pos
-		
 		if (player.isSneaking && pos.getTile<TileEntityEnergyCluster>(world) != null) {
 			if (world.isRemote) {
 				return SUCCESS
 			}
 			
-			val heldItem = player.getHeldItem(context.hand)
+			val heldItem = player.getHeldItem(ctx.hand)
 			val entry = pos.toLong()
 			
 			with(heldItem.heeTag) {
@@ -176,7 +171,7 @@ class ItemEnergyOracle(properties: Properties) : ItemAbstractEnergyUser(properti
 			return SUCCESS
 		}
 		
-		return super.onItemUse(context)
+		return super.useOnBlock(world, pos, player, item, ctx)
 	}
 	
 	override fun inventoryTick(stack: ItemStack, world: World, entity: Entity, itemSlot: Int, isSelected: Boolean) {

src/main/java/chylex/hee/game/item/ItemEnergyReceptacle.kt

@@ -4,6 +4,7 @@ import chylex.hee.client.color.NO_TINT
 import chylex.hee.game.block.entity.TileEntityEnergyCluster
 import chylex.hee.game.inventory.heeTag
 import chylex.hee.game.inventory.heeTagOrNull
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.item.infusion.Infusion.SAFETY
 import chylex.hee.game.item.infusion.Infusion.STABILITY
 import chylex.hee.game.item.infusion.InfusionList
@@ -27,10 +28,10 @@ import chylex.hee.system.forge.Side
 import chylex.hee.system.forge.Sided
 import chylex.hee.system.migration.ActionResult.FAIL
 import chylex.hee.system.migration.ActionResult.SUCCESS
+import chylex.hee.system.migration.EntityPlayer
 import chylex.hee.system.serialization.TagCompound
 import chylex.hee.system.serialization.getIntegerOrNull
 import chylex.hee.system.serialization.hasKey
-import chylex.hee.system.serialization.use
 import net.minecraft.client.renderer.color.IItemColor
 import net.minecraft.client.util.ITooltipFlag
 import net.minecraft.entity.Entity
@@ -43,7 +44,7 @@ import net.minecraft.util.text.TranslationTextComponent
 import net.minecraft.world.World
 import kotlin.math.pow
 
-class ItemEnergyReceptacle(properties: Properties) : ItemAbstractInfusable(properties) {
+class ItemEnergyReceptacle(properties: Properties) : ItemAbstractInfusable(properties), UseOnBlockComponent {
 	private companion object {
 		private const val CLUSTER_SNAPSHOT_TAG = "Cluster"
 		private const val UPDATE_TIME_TAG = "UpdateTime"
@@ -105,18 +106,14 @@ class ItemEnergyReceptacle(properties: Properties) : ItemAbstractInfusable(prope
 		}
 		
 		// POLISH tweak animation
+		
+		components.attach(this)
 	}
 	
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType? {
-		val player = context.player ?: return FAIL
+		with(item.heeTag) {
-		val world = context.world
-		val pos = context.pos
-		
-		val stack = player.getHeldItem(context.hand)
-		
-		stack.heeTag.use {
 			if (hasKey(CLUSTER_SNAPSHOT_TAG)) {
-				val finalPos = BlockEditor.place(ModBlocks.ENERGY_CLUSTER, player, stack, context)
+				val finalPos = BlockEditor.place(ModBlocks.ENERGY_CLUSTER, player, item, ctx)
 				
 				if (world.isRemote) {
 					return SUCCESS
@@ -126,7 +123,7 @@ class ItemEnergyReceptacle(properties: Properties) : ItemAbstractInfusable(prope
 					finalPos.getTile<TileEntityEnergyCluster>(world)?.let {
 						it.loadClusterSnapshot(ClusterSnapshot(getCompound(CLUSTER_SNAPSHOT_TAG)), inactive = false)
 						
-						if (shouldLoseHealth(it, this, InfusionTag.getList(stack))) {
+						if (shouldLoseHealth(it, this, InfusionTag.getList(item))) {
 							it.deteriorateHealth()
 						}
 					}
@@ -141,7 +138,7 @@ class ItemEnergyReceptacle(properties: Properties) : ItemAbstractInfusable(prope
 					return SUCCESS
 				}
 			}
-			else if (BlockEditor.canEdit(pos, player, stack)) {
+			else if (BlockEditor.canEdit(pos, player, item)) {
 				if (world.isRemote) {
 					return SUCCESS
 				}

src/main/java/chylex/hee/game/item/ItemFlintAndInfernium.kt

@@ -6,6 +6,7 @@ import chylex.hee.game.entity.heeTag
 import chylex.hee.game.entity.heeTagOrNull
 import chylex.hee.game.entity.posVec
 import chylex.hee.game.inventory.doDamage
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.world.BlockEditor
 import chylex.hee.game.world.FLAG_NONE
 import chylex.hee.game.world.getBlock
@@ -14,7 +15,6 @@ import chylex.hee.game.world.playServer
 import chylex.hee.game.world.removeBlock
 import chylex.hee.game.world.setBlock
 import chylex.hee.init.ModBlocks
-import chylex.hee.system.compatibility.MinecraftForgeEventBus
 import chylex.hee.system.forge.EventPriority
 import chylex.hee.system.forge.SubscribeAllEvents
 import chylex.hee.system.forge.SubscribeEvent
@@ -26,7 +26,6 @@ import chylex.hee.system.migration.EntityPlayer
 import chylex.hee.system.migration.Sounds
 import chylex.hee.system.random.nextFloat
 import net.minecraft.block.Blocks
-import net.minecraft.item.Item
 import net.minecraft.item.ItemStack
 import net.minecraft.item.ItemUseContext
 import net.minecraft.util.ActionResultType
@@ -36,7 +35,7 @@ import net.minecraft.util.math.BlockPos
 import net.minecraft.world.World
 import net.minecraftforge.event.world.ExplosionEvent
 
-class ItemFlintAndInfernium(properties: Properties) : Item(properties) {
+class ItemFlintAndInfernium(properties: Properties) : ItemWithComponents(properties), UseOnBlockComponent {
 	@SubscribeAllEvents(modid = HEE.ID)
 	companion object {
 		private const val CREEPER_INFERNIUM_TAG = "Infernium"
@@ -55,7 +54,7 @@ class ItemFlintAndInfernium(properties: Properties) : Item(properties) {
 	}
 	
 	init {
-		MinecraftForgeEventBus.register(this)
+		components.attach(this)
 	}
 	
 	fun igniteTNT(world: World, pos: BlockPos, player: EntityPlayer?, ignoreTrap: Boolean) {
@@ -67,14 +66,8 @@ class ItemFlintAndInfernium(properties: Properties) : Item(properties) {
 		pos.removeBlock(world)
 	}
 	
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType? {
-		val player = context.player ?: return FAIL
+		if (!BlockEditor.canEdit(pos, player, item)) {
-		val world = context.world
-		val pos = context.pos
-		
-		val heldItem = player.getHeldItem(context.hand)
-		
-		if (!BlockEditor.canEdit(pos, player, heldItem)) {
 			return FAIL
 		}
 		
@@ -85,11 +78,11 @@ class ItemFlintAndInfernium(properties: Properties) : Item(properties) {
 				igniteTNT(world, pos, player, ignoreTrap = false)
 			}
 			else {
-				BlockEditor.place(ModBlocks.ETERNAL_FIRE, player, heldItem, context) ?: return FAIL
+				BlockEditor.place(ModBlocks.ETERNAL_FIRE, player, item, ctx) ?: return FAIL
 			}
 			
 			Sounds.ITEM_FLINTANDSTEEL_USE.playServer(world, pos, SoundCategory.BLOCKS, volume = 1.1F, pitch = world.rand.nextFloat(0.4F, 0.5F))
-			heldItem.doDamage(1, player, context.hand)
+			item.doDamage(1, player, ctx.hand)
 		}
 		
 		return SUCCESS

src/main/java/chylex/hee/game/item/ItemPortalToken.kt

@@ -9,6 +9,7 @@ import chylex.hee.game.entity.item.EntityTokenHolder
 import chylex.hee.game.entity.selectExistingEntities
 import chylex.hee.game.inventory.heeTag
 import chylex.hee.game.inventory.heeTagOrNull
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.mechanics.portal.DimensionTeleporter
 import chylex.hee.game.mechanics.portal.EntityPortalContact
 import chylex.hee.game.world.BlockEditor
@@ -34,7 +35,6 @@ import chylex.hee.system.serialization.putEnum
 import net.minecraft.client.renderer.color.IItemColor
 import net.minecraft.client.util.ITooltipFlag
 import net.minecraft.entity.Entity
-import net.minecraft.item.Item
 import net.minecraft.item.ItemGroup
 import net.minecraft.item.ItemStack
 import net.minecraft.item.ItemUseContext
@@ -43,13 +43,14 @@ import net.minecraft.util.ActionResultType
 import net.minecraft.util.Hand
 import net.minecraft.util.NonNullList
 import net.minecraft.util.math.AxisAlignedBB
+import net.minecraft.util.math.BlockPos
 import net.minecraft.util.text.ITextComponent
 import net.minecraft.util.text.StringTextComponent
 import net.minecraft.util.text.TranslationTextComponent
 import net.minecraft.world.World
 import net.minecraft.world.dimension.DimensionType
 
-class ItemPortalToken(properties: Properties) : Item(properties) {
+class ItemPortalToken(properties: Properties) : ItemWithComponents(properties), UseOnBlockComponent {
 	companion object {
 		private const val TYPE_TAG = "Type"
 		private const val TERRITORY_TYPE_TAG = "Territory"
@@ -72,6 +73,8 @@ class ItemPortalToken(properties: Properties) : Item(properties) {
 	}
 	
 	init {
+		components.attach(this)
+		
 		addPropertyOverride(Resource.Custom("token_type")) { stack, _, _ ->
 			getTokenType(stack).propertyValue + (if (stack.heeTagOrNull.hasKey(IS_CORRUPTED_TAG)) 0.5F else 0F)
 		}
@@ -178,10 +181,7 @@ class ItemPortalToken(properties: Properties) : Item(properties) {
 		return ActionResult(SUCCESS, heldItem)
 	}
 	
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType {
-		val player = context.player ?: return FAIL
-		val world = context.world
-		
 		if (!player.isCreative || player.isSneaking) {
 			return PASS
 		}
@@ -190,16 +190,14 @@ class ItemPortalToken(properties: Properties) : Item(properties) {
 			return SUCCESS
 		}
 		
-		val targetPos = context.pos.up()
+		val targetPos = pos.up()
+		val territoryType = getTerritoryType(item)
 		
-		val heldItem = player.getHeldItem(context.hand)
+		if (territoryType == null || ctx.face != UP || !BlockEditor.canEdit(targetPos, player, item) || world.selectExistingEntities.inBox<EntityTokenHolder>(AxisAlignedBB(targetPos)).any()) {
-		val territoryType = getTerritoryType(heldItem)
-		
-		if (territoryType == null || context.face != UP || !BlockEditor.canEdit(targetPos, player, heldItem) || world.selectExistingEntities.inBox<EntityTokenHolder>(AxisAlignedBB(targetPos)).any()) {
 			return FAIL
 		}
 		
-		world.addEntity(EntityTokenHolder(world, targetPos, getTokenType(heldItem), territoryType))
+		world.addEntity(EntityTokenHolder(world, targetPos, getTokenType(item), territoryType))
 		return SUCCESS
 	}
 	

src/main/java/chylex/hee/game/item/ItemPuzzleMedallion.kt

@@ -1,6 +1,7 @@
 package chylex.hee.game.item
 
 import chylex.hee.game.block.entity.TileEntityMinersBurialAltar
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.world.BlockEditor
 import chylex.hee.game.world.getTile
 import chylex.hee.game.world.playUniversal
@@ -8,33 +9,34 @@ import chylex.hee.init.ModSounds
 import chylex.hee.system.migration.ActionResult.FAIL
 import chylex.hee.system.migration.ActionResult.PASS
 import chylex.hee.system.migration.ActionResult.SUCCESS
-import net.minecraft.item.Item
+import chylex.hee.system.migration.EntityPlayer
+import net.minecraft.item.ItemStack
 import net.minecraft.item.ItemUseContext
 import net.minecraft.util.ActionResultType
 import net.minecraft.util.SoundCategory
+import net.minecraft.util.math.BlockPos
+import net.minecraft.world.World
 
-class ItemPuzzleMedallion(properties: Properties) : Item(properties) {
+class ItemPuzzleMedallion(properties: Properties) : ItemWithComponents(properties) {
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	init {
-		val player = context.player ?: return FAIL
+		components.attach(object : UseOnBlockComponent {
-		val world = context.world
+			override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType {
-		val pos = context.pos
+				if (!BlockEditor.canEdit(pos, player, item)) {
-		
+					return FAIL
-		val heldItem = player.getHeldItem(context.hand)
+				}
-		
+				
-		if (!BlockEditor.canEdit(pos, player, heldItem)) {
+				val tile = pos.getTile<TileEntityMinersBurialAltar>(world)
-			return FAIL
+				
-		}
+				if (tile != null && !tile.hasMedallion) {
-		
+					tile.hasMedallion = true
-		val tile = pos.getTile<TileEntityMinersBurialAltar>(world)
+					item.shrink(1)
-		
+					
-		if (tile != null && !tile.hasMedallion) {
+					ModSounds.ITEM_PUZZLE_MEDALLION_INSERT.playUniversal(player, pos, SoundCategory.BLOCKS, volume = 2F, pitch = 0.8F)
-			tile.hasMedallion = true
+					return SUCCESS
-			heldItem.shrink(1)
+				}
-			
+				
-			ModSounds.ITEM_PUZZLE_MEDALLION_INSERT.playUniversal(player, pos, SoundCategory.BLOCKS, volume = 2F, pitch = 0.8F)
+				return PASS
-			return SUCCESS
+			}
-		}
+		})
-		
-		return PASS
 	}
 }

src/main/java/chylex/hee/game/item/ItemRevitalizationSubstance.kt

@@ -3,6 +3,7 @@ package chylex.hee.game.item
 import chylex.hee.client.model.ModelHelper
 import chylex.hee.game.block.entity.TileEntityEnergyCluster
 import chylex.hee.game.entity.item.EntityItemRevitalizationSubstance
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.mechanics.energy.IClusterHealth.HealthOverride.REVITALIZING
 import chylex.hee.game.particle.ParticleSmokeCustom
 import chylex.hee.game.particle.spawner.ParticleSpawnerCustom
@@ -26,7 +27,6 @@ import chylex.hee.system.serialization.readPos
 import chylex.hee.system.serialization.use
 import chylex.hee.system.serialization.writePos
 import net.minecraft.entity.Entity
-import net.minecraft.item.Item
 import net.minecraft.item.ItemStack
 import net.minecraft.item.ItemUseContext
 import net.minecraft.network.PacketBuffer
@@ -37,7 +37,7 @@ import net.minecraft.util.math.BlockPos
 import net.minecraft.world.World
 import java.util.Random
 
-class ItemRevitalizationSubstance(properties: Properties) : Item(properties) {
+class ItemRevitalizationSubstance(properties: Properties) : ItemWithComponents(properties), UseOnBlockComponent {
 	companion object {
 		private val PARTICLE_FAIL = ParticleSpawnerCustom(
 			type = ParticleSmokeCustom,
@@ -70,11 +70,11 @@ class ItemRevitalizationSubstance(properties: Properties) : Item(properties) {
 		}
 	}
 	
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	init {
-		val player = context.player ?: return FAIL
+		components.attach(this)
-		val world = context.world
+	}
-		val pos = context.pos
+	
-		
+	override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType? {
 		if (world.isRemote) {
 			return FAIL // disable animation
 		}
@@ -83,11 +83,11 @@ class ItemRevitalizationSubstance(properties: Properties) : Item(properties) {
 		
 		if (cluster.currentHealth != REVITALIZING) {
 			if (cluster.addRevitalizationSubstance()) {
-				player.getHeldItem(context.hand).shrink(1)
+				player.getHeldItem(ctx.hand).shrink(1)
 				ModSounds.ITEM_REVITALIZATION_SUBSTANCE_USE_SUCCESS.playServer(world, pos, SoundCategory.BLOCKS, volume = 0.5F)
 			}
 			else {
-				PacketClientFX(FX_FAIL, FxUseData(pos, player, context.hand)).sendToAllAround(player, 24.0)
+				PacketClientFX(FX_FAIL, FxUseData(pos, player, ctx.hand)).sendToAllAround(player, 24.0)
 			}
 		}
 		

src/main/java/chylex/hee/game/item/ItemTableCore.kt

@@ -2,33 +2,33 @@ package chylex.hee.game.item
 
 import chylex.hee.game.block.BlockAbstractTableTile
 import chylex.hee.game.block.BlockTableBase
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.world.BlockEditor
 import chylex.hee.game.world.breakBlock
 import chylex.hee.game.world.getBlock
 import chylex.hee.game.world.setBlock
 import chylex.hee.system.forge.Side
 import chylex.hee.system.forge.Sided
+import chylex.hee.system.migration.EntityPlayer
 import net.minecraft.client.util.ITooltipFlag
-import net.minecraft.item.Item
 import net.minecraft.item.ItemStack
 import net.minecraft.item.ItemUseContext
 import net.minecraft.util.ActionResultType
 import net.minecraft.util.ActionResultType.FAIL
 import net.minecraft.util.ActionResultType.PASS
 import net.minecraft.util.ActionResultType.SUCCESS
+import net.minecraft.util.math.BlockPos
 import net.minecraft.util.text.ITextComponent
 import net.minecraft.util.text.TranslationTextComponent
 import net.minecraft.world.World
 
-class ItemTableCore(private val tableBlocks: Array<BlockAbstractTableTile<*>>, properties: Properties) : Item(properties) {
+class ItemTableCore(private val tableBlocks: Array<BlockAbstractTableTile<*>>, properties: Properties) : ItemWithComponents(properties), UseOnBlockComponent {
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	init {
-		val player = context.player ?: return FAIL
+		components.attach(this)
-		val world = context.world
+	}
-		val pos = context.pos
+	
-		
+	override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType {
-		val heldItem = player.getHeldItem(context.hand)
+		if (!BlockEditor.canEdit(pos, player, item)) {
-		
-		if (!BlockEditor.canEdit(pos, player, heldItem)) {
 			return FAIL
 		}
 		
@@ -42,7 +42,7 @@ class ItemTableCore(private val tableBlocks: Array<BlockAbstractTableTile<*>>, p
 				pos.setBlock(world, table)
 			}
 			
-			heldItem.shrink(1)
+			item.shrink(1)
 			return SUCCESS
 		}
 		

src/main/java/chylex/hee/game/item/ItemTableLink.kt

@@ -12,6 +12,7 @@ import chylex.hee.game.item.ItemTableLink.Companion.SoundType.LINK_FAIL
 import chylex.hee.game.item.ItemTableLink.Companion.SoundType.LINK_OUTPUT
 import chylex.hee.game.item.ItemTableLink.Companion.SoundType.LINK_RESTART
 import chylex.hee.game.item.ItemTableLink.Companion.SoundType.LINK_SUCCESS
+import chylex.hee.game.item.components.UseOnBlockComponent
 import chylex.hee.game.world.getBlock
 import chylex.hee.game.world.getTile
 import chylex.hee.game.world.playClient
@@ -26,6 +27,7 @@ import chylex.hee.system.forge.Sided
 import chylex.hee.system.migration.ActionResult.FAIL
 import chylex.hee.system.migration.ActionResult.SUCCESS
 import chylex.hee.system.migration.EntityItem
+import chylex.hee.system.migration.EntityPlayer
 import chylex.hee.system.random.nextFloat
 import chylex.hee.system.serialization.getPos
 import chylex.hee.system.serialization.hasKey
@@ -34,7 +36,6 @@ import chylex.hee.system.serialization.readPos
 import chylex.hee.system.serialization.use
 import chylex.hee.system.serialization.writePos
 import net.minecraft.entity.Entity
-import net.minecraft.item.Item
 import net.minecraft.item.ItemStack
 import net.minecraft.item.ItemUseContext
 import net.minecraft.network.PacketBuffer
@@ -44,7 +45,7 @@ import net.minecraft.util.math.BlockPos
 import net.minecraft.world.World
 import java.util.Random
 
-class ItemTableLink(properties: Properties) : Item(properties) {
+class ItemTableLink(properties: Properties) : ItemWithComponents(properties), UseOnBlockComponent {
 	companion object {
 		private const val POS_TAG = "StoredPos"
 		private const val TIME_TAG = "StoredTime"
@@ -106,11 +107,11 @@ class ItemTableLink(properties: Properties) : Item(properties) {
 		}
 	}
 	
-	override fun onItemUse(context: ItemUseContext): ActionResultType {
+	init {
-		val player = context.player ?: return FAIL
+		components.attach(this)
-		val world = context.world
+	}
-		val pos = context.pos
+	
-		
+	override fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType? {
 		if (!player.isSneaking || !isValidTarget(world, pos)) {
 			val pedestal = pos.getTile<TileEntityTablePedestal>(world)
 			
@@ -131,7 +132,7 @@ class ItemTableLink(properties: Properties) : Item(properties) {
 			return SUCCESS
 		}
 		
-		val heldItem = player.getHeldItem(context.hand)
+		val heldItem = player.getHeldItem(ctx.hand)
 		var newStoredPos = pos
 		var soundType = LINK_RESTART
 		

src/main/java/chylex/hee/game/world/feature/obsidiantower/piece/ObsidianTowerLevel_Top.kt

@@ -21,6 +21,7 @@ import chylex.hee.game.world.structure.trigger.EntityStructureTrigger
 import chylex.hee.game.world.territory.TerritoryType
 import chylex.hee.init.ModBlocks
 import chylex.hee.network.client.PacketClientFX
+import chylex.hee.network.fx.FxVecData
 import chylex.hee.system.facades.Facing4
 import chylex.hee.system.math.addY
 import chylex.hee.system.math.offsetTowards
@@ -145,9 +146,8 @@ abstract class ObsidianTowerLevel_Top(file: String) : ObsidianTowerLevel_General
 							
 							val offsetProgress = chargeAnim.pow(0.8F).toDouble()
 							val particlePos = start.center.offsetTowards(tokenHolder.posVec.addY(tokenHolder.height * 0.5), offsetProgress).addY(progressCurvePoint * 6.0)
-							val particleData = EnderEyeSpawnerParticles.Companion.ParticleData(particlePos)
 							
-							PacketClientFX(EnderEyeSpawnerParticles.FX_PARTICLE, particleData).sendToAllAround(entity.world, pos, 256.0)
+							PacketClientFX(EnderEyeSpawnerParticles.FX_PARTICLE, FxVecData(particlePos)).sendToAllAround(entity.world, pos, 256.0)
 						}
 						
 						if (chargeAnim == 1F) {

src/main/java/chylex/hee/game/world/feature/tombdungeon/TombDungeonLevel.kt

@@ -21,6 +21,7 @@ import chylex.hee.game.world.feature.tombdungeon.piece.TombDungeonAbstractPiece
 import chylex.hee.system.math.floorToInt
 import chylex.hee.system.random.nextFloat
 import chylex.hee.system.random.nextInt
+import chylex.hee.system.random.nextRounded
 import java.util.Random
 import kotlin.math.max
 import kotlin.math.min
@@ -110,49 +111,34 @@ enum class TombDungeonLevel(val isFancy: Boolean, private val corridorFactor: In
 		
 		return when(this) {
 			FIRST -> when(rand.nextInt(0, 3)) {
-				0    -> MOBS(undreads = rand.nextInt(0, h), spiderlings = 1 + m)
+				0    -> MOBS(undreads = rand.nextRounded(0.2F),     spiderlings = 1 + m + rand.nextInt(0, h))
-				1    -> MOBS(undreads = rand.nextInt(0, h), spiderlings = 2 + m)
+				1    -> MOBS(undreads = rand.nextRounded(0.3F * m), spiderlings = 1 + h + rand.nextInt(0, m))
-				2    -> MOBS(undreads = 1 + h,              spiderlings = 0 + rand.nextInt(0, m))
+				2    -> MOBS(undreads = rand.nextRounded(0.3F * h), spiderlings = 2 + m)
-				else -> MOBS(undreads = 1 + h,              spiderlings = 1 + rand.nextInt(0, m))
+				else -> MOBS(undreads = 0,                          spiderlings = 1 + rand.nextInt(0, 1 + m))
 			}
 			
 			SECOND -> when(rand.nextInt(0, 3)) {
-				0    -> MOBS(undreads = rand.nextInt(0, m + h),         spiderlings = 1 + rand.nextInt(0, m + h))
+				0    -> MOBS(undreads = rand.nextRounded(0.3F),     spiderlings = 1 + m + rand.nextInt(0, h))
-				1    -> MOBS(undreads = 1 + rand.nextInt(0, m + h),     spiderlings = rand.nextInt(0, m + h))
+				1    -> MOBS(undreads = rand.nextRounded(0.4F * m), spiderlings = 1 + rand.nextInt(0, 2 * m))
-				2    -> MOBS(undreads = 1 + m + rand.nextInt(h, h * 2), spiderlings = 0)
+				else -> MOBS(undreads = 0,                          spiderlings = rand.nextRounded(1.8F + (m * 0.55F) + (h * 0.55F)))
-				else -> MOBS(undreads = 1 + h,                          spiderlings = 1 + m + rand.nextInt(h, h * 3))
 			}
 			
-			// TODO
+			THIRD -> when(rand.nextInt(0, 2)) {
+				0    -> MOBS(undreads = rand.nextInt(0, 1 + h), spiderlings = rand.nextRounded(1.4F + (m * 0.5F)) + rand.nextInt(0, m))
+				1    -> MOBS(undreads = rand.nextInt(0, 1 + m), spiderlings = rand.nextRounded(1.2F) + rand.nextInt(0, 2 * h))
+				else -> MOBS(undreads = rand.nextInt(0, 1 + m), spiderlings = 2 + rand.nextInt(0, m + h))
+			}
 			
-			else -> 0 to 0
+			FOURTH -> when(rand.nextInt(0, 5)) {
+				in 0..1 -> MOBS(undreads = 1 + rand.nextInt(h, 3 + h), spiderlings = rand.nextRounded(0.4F * m) + rand.nextInt(0, m + h))
+				else    -> MOBS(undreads = 2 + rand.nextInt(m, 2 * m), spiderlings = rand.nextRounded(0.3F + (m * 0.1F) + (h * 0.3F)))
+			}
+			
+			else -> when(rand.nextInt(0, 2)) {
+				0    -> MOBS(undreads = 1 + h + rand.nextInt(m, 1 + (m * 2)) + rand.nextInt(h, 1 + h), spiderlings = rand.nextInt(0, m))
+				else -> MOBS(undreads = 2 + h + rand.nextInt(m, 2 * m),                                spiderlings = rand.nextRounded(0.2F + (m * 0.2F)))
+			}
 		}
-		
-		/*
-		
-import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel
-import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
-import chylex.hee.system.math.floorToInt
-import com.google.common.collect.Comparators
-import java.util.Random
-
-val rand = Random()
-val level = TombDungeonLevel.FIRST
-val reps = 100000
-
-MobAmount.values().map { amount ->
-	"\n\n" + amount.name + "\n" + "-".repeat(amount.name.length) + "\n" + (1..reps)
-		.map { level.pickUndreadAndSpiderlingSpawns(rand, amount) }
-		.groupingBy { it }
-		.eachCount()
-		.entries
-		.map { ((it.value * 100.0) / reps).floorToInt() to it.key }
-		.sortedWith(compareBy({ it.first }, { it.second.first }, { it.second.second }))
-		.map { "U = ${it.second.first}, S = ${it.second.second} ... ${it.first} %" }
-		.joinToString("\n")
-}.joinToString("\n")
-	
-		 */
 	}
 	
 	private fun MOBS(undreads: Int, spiderlings: Int) = undreads to spiderlings

src/main/java/chylex/hee/game/world/feature/tombdungeon/piece/TombDungeonRoom_Tomb.kt

@@ -1,38 +1,56 @@
 package chylex.hee.game.world.feature.tombdungeon.piece
 
+import chylex.hee.game.block.BlockGraveDirt
+import chylex.hee.game.entity.living.EntityMobSpiderling
+import chylex.hee.game.entity.living.EntityMobUndread
 import chylex.hee.game.entity.posVec
+import chylex.hee.game.entity.selectExistingEntities
+import chylex.hee.game.entity.selectVulnerableEntities
 import chylex.hee.game.entity.technical.EntityTechnicalTrigger
 import chylex.hee.game.entity.technical.EntityTechnicalTrigger.ITriggerHandler
 import chylex.hee.game.entity.technical.EntityTechnicalTrigger.Types.TOMB_DUNGEON_UNDREAD_SPAWNER
 import chylex.hee.game.world.Pos
 import chylex.hee.game.world.distanceSqTo
+import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel
 import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
 import chylex.hee.game.world.feature.tombdungeon.connection.TombDungeonConnection
 import chylex.hee.game.world.feature.tombdungeon.connection.TombDungeonConnectionType.TOMB_ENTRANCE_INSIDE
+import chylex.hee.game.world.getBlock
+import chylex.hee.game.world.getState
 import chylex.hee.game.world.isAir
 import chylex.hee.game.world.offsetWhile
+import chylex.hee.game.world.playClient
 import chylex.hee.game.world.structure.IStructureWorld
 import chylex.hee.game.world.structure.piece.IStructurePieceConnection
 import chylex.hee.game.world.structure.trigger.EntityStructureTrigger
 import chylex.hee.init.ModEntities
+import chylex.hee.network.client.PacketClientFX
+import chylex.hee.network.fx.FxVecData
+import chylex.hee.network.fx.FxVecHandler
+import chylex.hee.system.math.Vec
 import chylex.hee.system.math.Vec3
 import chylex.hee.system.math.addY
+import chylex.hee.system.math.directionTowards
 import chylex.hee.system.math.square
+import chylex.hee.system.math.toYaw
+import chylex.hee.system.migration.BlockWeb
+import chylex.hee.system.migration.EntityLivingBase
+import chylex.hee.system.migration.EntityPlayer
 import chylex.hee.system.migration.Facing.DOWN
 import chylex.hee.system.migration.Facing.NORTH
 import chylex.hee.system.migration.Facing.SOUTH
 import chylex.hee.system.random.nextFloat
+import chylex.hee.system.random.nextInt
+import chylex.hee.system.random.nextItem
 import chylex.hee.system.serialization.TagCompound
 import chylex.hee.system.serialization.use
 import net.minecraft.entity.EntitySpawnPlacementRegistry
-import net.minecraft.entity.SpawnReason.SPAWNER
+import net.minecraft.entity.SpawnReason.STRUCTURE
-import net.minecraft.particles.RedstoneParticleData
+import net.minecraft.util.Direction.Axis
-import net.minecraft.util.Direction.EAST
-import net.minecraft.util.Direction.WEST
 import net.minecraft.util.math.AxisAlignedBB
 import net.minecraft.util.math.BlockPos
+import net.minecraft.util.math.Vec3d
 import net.minecraft.world.World
-import net.minecraft.world.server.ServerWorld
 import java.util.Random
 
 abstract class TombDungeonRoom_Tomb(file: String, entranceY: Int, allowSecrets: Boolean, isFancy: Boolean) : TombDungeonRoom(file, isFancy) {
@@ -43,8 +61,6 @@ abstract class TombDungeonRoom_Tomb(file: String, entranceY: Int, allowSecrets:
 		TombDungeonConnection(TOMB_ENTRANCE_INSIDE, Pos(centerX, entranceY, maxZ), SOUTH)
 	)
 	
-	protected abstract val mobAmount: MobAmount?
-	
 	override fun generate(world: IStructureWorld, instance: Instance) {
 		super.generate(world, instance)
 		generateSpawnerTrigger(world, instance)
@@ -52,19 +68,16 @@ abstract class TombDungeonRoom_Tomb(file: String, entranceY: Int, allowSecrets:
 	
 	protected open fun generateSpawnerTrigger(world: IStructureWorld, instance: Instance) {
 		val rand = world.rand
-		val level = instance.context
+		val level = instance.context ?: return
+		val mobAmount = getSpawnerTriggerMobAmount(rand, level) ?: return
 		
-		if (rand.nextInt(3) == 0 && level != null) {
+		val (undreads, spiderlings) = level.pickUndreadAndSpiderlingSpawns(rand, mobAmount)
-			val mobAmount = mobAmount
+		MobSpawnerTrigger.place(world, entrance = connections.first().offset, width = maxX, depth = maxZ, undreads, spiderlings)
-			
-			if (mobAmount != null) {
-				val (undreads, spiderlings) = level.pickUndreadAndSpiderlingSpawns(rand, mobAmount)
-				UndreadSpawnerTrigger.place(world, entrance = connections.first().offset, width = maxX, depth = maxZ, undreads, spiderlings)
-			}
-		}
 	}
 	
-	class UndreadSpawnerTrigger() : ITriggerHandler {
+	protected abstract fun getSpawnerTriggerMobAmount(rand: Random, level: TombDungeonLevel): MobAmount?
+	
+	class MobSpawnerTrigger() : ITriggerHandler {
 		companion object {
 			private const val WIDTH_TAG = "Width"
 			private const val DEPTH_TAG = "Depth"
@@ -72,12 +85,32 @@ abstract class TombDungeonRoom_Tomb(file: String, entranceY: Int, allowSecrets:
 			private const val SPIDERLINGS_TAG = "Spiderlings"
 			
 			fun place(world: IStructureWorld, entrance: BlockPos, width: Int, depth: Int, undreads: Int, spiderlings: Int) {
-				val nbt = UndreadSpawnerTrigger(width - 1.0, depth - 1.0, undreads, spiderlings).serializeNBT()
+				val nbt = MobSpawnerTrigger(width - 1.0, depth - 1.0, undreads, spiderlings).serializeNBT()
 				
 				world.addTrigger(entrance, EntityStructureTrigger({ wrld ->
 					EntityTechnicalTrigger(wrld, TOMB_DUNGEON_UNDREAD_SPAWNER, nbt).apply { rotationYaw = NORTH.horizontalAngle }
 				}, yOffset = 0.5))
 			}
+			
+			val FX_SPAWN_UNDREAD = object : FxVecHandler() {
+				override fun handle(world: World, rand: Random, vec: Vec3d) {
+					EntityMobUndread(world).apply {
+						setLocationAndAngles(vec.x, vec.y, vec.z, 0F, 0F)
+						spawnExplosionParticle()
+						deathSound.playClient(vec, soundCategory, volume = 1.2F, pitch = soundPitch * 0.7F)
+					}
+				}
+			}
+			
+			val FX_SPAWN_SPIDERLING = object : FxVecHandler() {
+				override fun handle(world: World, rand: Random, vec: Vec3d) {
+					EntityMobSpiderling(world).apply {
+						setLocationAndAngles(vec.x, vec.y, vec.z, 0F, 0F)
+						spawnExplosionParticle()
+						ambientSound.playClient(vec, soundCategory, volume = 1F, pitch = soundPitch)
+					}
+				}
+			}
 		}
 		
 		private var width = 0.0
@@ -108,46 +141,71 @@ abstract class TombDungeonRoom_Tomb(file: String, entranceY: Int, allowSecrets:
 				vecR.scale(width * 0.5).add(vecF.scale(depth)).addY(2.5)
 			).offset(entity.posVec)
 			
- 			repeat(10) {
+			val nearbyPlayers = world.selectVulnerableEntities.inBox<EntityPlayer>(aabb)
-				(world as ServerWorld).spawnParticle(RedstoneParticleData(if (facing == NORTH || facing == EAST) 1F else 0F, if (facing == SOUTH || facing == EAST) 1F else 0F, if (facing == WEST) 1F else 0F, 1F),
+			if (nearbyPlayers.isEmpty()) {
-					world.rand.nextFloat(aabb.minX, aabb.maxX),
-					world.rand.nextFloat(aabb.minY, aabb.maxY),
-					world.rand.nextFloat(aabb.minZ, aabb.maxZ),
-					1, 0.0, 0.0, 0.0, 0.0
-				)
-			}//TODO
-			
-			if (world.players.none { aabb.contains(it.posVec) }) {
 				return
 			}
 			
 			val rand = world.rand
+			val minPlayerDist = ((depth * 0.4) + (width * 0.16)).coerceIn(1.5, 3.5)
 			
-			for((entityCount, entityType) in listOf(
+			for((entityCount, entityType, spawnParticle) in listOf(
-				undreads to ModEntities.UNDREAD,
+				Triple(undreads, ModEntities.UNDREAD, FX_SPAWN_UNDREAD),
-				spiderlings to ModEntities.SPIDERLING
+				Triple(spiderlings, ModEntities.SPIDERLING, FX_SPAWN_SPIDERLING)
 			)) {
 				repeat(entityCount) {
-					for(attempt in 1..20) {
+					var bestPos: BlockPos? = null
+					
+					for(attempt in 1..75) {
 						val pos = Pos(
 							rand.nextFloat(aabb.minX, aabb.maxX),
 							rand.nextFloat(aabb.minY, aabb.maxY) + 0.5,
 							rand.nextFloat(aabb.minZ, aabb.maxZ),
 						).offsetWhile(DOWN, 1..3) {
-							it.isAir(world)
+							it.isAir(world) || it.getBlock(world) is BlockWeb
 						}
 						
-						if (EntitySpawnPlacementRegistry.func_223515_a(entityType, world, SPAWNER, pos, rand) &&
+						val collisionCheckAABB = entityType.getBoundingBoxWithSizeApplied(pos.x + 0.5, pos.y.toDouble(), pos.z + 0.5).grow(0.2, 0.0, 0.2)
-							world.hasNoCollisions(entityType.getBoundingBoxWithSizeApplied(pos.x + 0.5, pos.y.toDouble(), pos.z + 0.5)) &&
+						
-							world.players.none { pos.distanceSqTo(it) < square(2.75) }
+						if (EntitySpawnPlacementRegistry.func_223515_a(entityType, world, STRUCTURE, pos, rand) &&
+							world.hasNoCollisions(collisionCheckAABB) &&
+							world.selectExistingEntities.inBox<EntityLivingBase>(collisionCheckAABB.grow(0.4, 0.0, 0.4)).isEmpty() &&
+							world.players.none { pos.distanceSqTo(it) < square(minPlayerDist) }
 						) {
-							entityType.create(world)?.apply {
+							bestPos = pos
-								setLocationAndAngles(pos.x + 0.5, pos.y.toDouble(), pos.z + 0.5, rand.nextFloat(0F, 360F), 0F)
+							
-								spawnExplosionParticle()
+							if (entityType === ModEntities.UNDREAD) {
-								world.addEntity(this)
+								if (rand.nextInt(5) == 0 || pos.down().getBlock(world) is BlockGraveDirt) {
+									break
+								}
+							}
+							else {
+								break
+							}
+						}
+					}
+					
+					if (bestPos != null) {
+						val x = bestPos.x + rand.nextFloat(0.35, 0.65)
+						val y = bestPos.y + bestPos.down().getState(world).getCollisionShape(world, bestPos).getEnd(Axis.Y) - 1.0
+						val z = bestPos.z + rand.nextFloat(0.35, 0.65)
+						val vec = Vec(x, y, z)
+						val target = rand.nextItem(nearbyPlayers)
+						
+						entityType.create(world)?.apply {
+							setLocationAndAngles(x, y, z, vec.directionTowards(target.posVec).toYaw(), 0F)
+							rotationYawHead = rotationYaw
+							attackTarget = target
+							onGround = true // allow instant pathfinding in MeleeAttackGoal
+							
+							if (this is EntityMobSpiderling) {
+								wakeUp(preventSleep = true, aiDelayTicks = if (rand.nextInt(10) == 0) rand.nextInt(4, 6) else rand.nextInt(11, 18))
 							}
 							
-							break
+							onInitialSpawn(world, world.getDifficultyForLocation(bestPos), STRUCTURE, null, null)
+							world.addEntity(this)
+							
+							PacketClientFX(spawnParticle, FxVecData(vec)).sendToAllAround(this, 24.0)
 						}
 					}
 				}

src/main/java/chylex/hee/game/world/feature/tombdungeon/piece/TombDungeonRoom_Tomb_Mass.kt

@@ -2,11 +2,12 @@ package chylex.hee.game.world.feature.tombdungeon.piece
 
 import chylex.hee.game.block.BlockGraveDirt
 import chylex.hee.game.world.Pos
+import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel
 import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
 import chylex.hee.game.world.feature.tombdungeon.TombDungeonPieces
 import chylex.hee.game.world.feature.tombdungeon.connection.TombDungeonConnection
 import chylex.hee.game.world.feature.tombdungeon.connection.TombDungeonConnectionType.TOMB_ENTRANCE_INSIDE
-import chylex.hee.game.world.feature.tombdungeon.piece.TombDungeonRoom_Tomb.UndreadSpawnerTrigger
+import chylex.hee.game.world.feature.tombdungeon.piece.TombDungeonRoom_Tomb.MobSpawnerTrigger
 import chylex.hee.game.world.generation.IBlockPicker.Single
 import chylex.hee.game.world.generation.IBlockPicker.Single.Air
 import chylex.hee.game.world.math.Size
@@ -41,12 +42,6 @@ class TombDungeonRoom_Tomb_Mass(width: Int, depth: Int, private val border: Bool
 		val maxY = size.maxY
 		val maxZ = size.maxZ
 		
-		if (rand.nextInt(3) != 0 && level != null) {
-			val area = (size.x - 2) * (size.z - 2)
-			val (undreads, spiderlings) = level.pickUndreadAndSpiderlingSpawns(rand, if (area <= 30) MobAmount.LOW else MobAmount.MEDIUM)
-			UndreadSpawnerTrigger.place(world, entrance = connections.first().offset, width = maxX, depth = maxZ, undreads, spiderlings)
-		}
-		
 		val distance = if (border) 2 else 1
 		val palette = if (isFancy) TombDungeonPieces.PALETTE_ENTRY_FANCY_GRAVE else TombDungeonPieces.PALETTE_ENTRY_PLAIN_GRAVE
 		
@@ -66,8 +61,21 @@ class TombDungeonRoom_Tomb_Mass(width: Int, depth: Int, private val border: Bool
 		
 		if (rand.nextInt(6) == 0 && (border || split)) {
 			placeJars(world, instance, listOf(Pos(centerX, 2, 1)))
+			
+			if (level != null && rand.nextInt(9) != 0) {
+				placeSpawnerTrigger(world, level)
+			}
+		}
+		else if (level != null && rand.nextInt(3) != 0) {
+			placeSpawnerTrigger(world, level)
 		}
 		
 		placeCobwebs(world, instance)
 	}
+	
+	private fun placeSpawnerTrigger(world: IStructureWorld, level: TombDungeonLevel) {
+		val area = (size.x - 2) * (size.z - 2)
+		val (undreads, spiderlings) = level.pickUndreadAndSpiderlingSpawns(world.rand, if (area <= 30) MobAmount.LOW else MobAmount.MEDIUM)
+		MobSpawnerTrigger.place(world, entrance = connections.first().offset, width = size.maxX, depth = size.maxZ, undreads, spiderlings)
+	}
 }

src/main/java/chylex/hee/game/world/feature/tombdungeon/piece/TombDungeonRoom_Tomb_MassSpacious.kt

@@ -6,11 +6,9 @@ import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
 import chylex.hee.game.world.structure.IStructureWorld
 import chylex.hee.system.migration.Facing.NORTH
 import chylex.hee.system.random.nextInt
+import java.util.Random
 
 class TombDungeonRoom_Tomb_MassSpacious(file: String, entranceY: Int, isFancy: Boolean) : TombDungeonRoom_Tomb(file, entranceY, allowSecrets = false, isFancy) {
-	override val mobAmount
-		get() = MobAmount.MEDIUM
-	
 	override fun generate(world: IStructureWorld, instance: Instance) {
 		super.generate(world, instance)
 		
@@ -36,4 +34,8 @@ class TombDungeonRoom_Tomb_MassSpacious(file: String, entranceY: Int, isFancy: B
 			placeJars(world, instance, listOf(Pos(jarX, 3, maxZ - 2)))
 		}
 	}
+	
+	override fun getSpawnerTriggerMobAmount(rand: Random, level: TombDungeonLevel): MobAmount? {
+		return MobAmount.HIGH.takeIf { rand.nextInt(11) < (if (level <= TombDungeonLevel.SECOND) 7 else 4) }
+	}
 }

src/main/java/chylex/hee/game/world/feature/tombdungeon/piece/TombDungeonRoom_Tomb_MultiDeep.kt

@@ -2,21 +2,16 @@ package chylex.hee.game.world.feature.tombdungeon.piece
 
 import chylex.hee.game.block.BlockGraveDirt
 import chylex.hee.game.world.Pos
+import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel
 import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
 import chylex.hee.game.world.structure.IStructureWorld
 import chylex.hee.system.migration.Facing.EAST
 import chylex.hee.system.migration.Facing.WEST
 import chylex.hee.system.random.nextInt
 import chylex.hee.system.random.nextRounded
+import java.util.Random
 
 class TombDungeonRoom_Tomb_MultiDeep(file: String, private val tombsPerColumn: Int, entranceY: Int, isFancy: Boolean) : TombDungeonRoom_Tomb(file, entranceY, allowSecrets = false, isFancy) {
-	override val mobAmount
-		get() = when {
-			tombsPerColumn <= 5 -> MobAmount.LOW
-			tombsPerColumn <= 7 -> MobAmount.MEDIUM
-			else                -> MobAmount.HIGH
-		}
-	
 	override fun generate(world: IStructureWorld, instance: Instance) {
 		super.generate(world, instance)
 		
@@ -45,4 +40,15 @@ class TombDungeonRoom_Tomb_MultiDeep(file: String, private val tombsPerColumn: I
 			})
 		}
 	}
+	
+	override fun getSpawnerTriggerMobAmount(rand: Random, level: TombDungeonLevel): MobAmount? {
+		if (rand.nextBoolean()) {
+			return null
+		}
+		
+		return when {
+			tombsPerColumn <= 6 -> MobAmount.MEDIUM
+			else                -> MobAmount.HIGH
+		}
+	}
 }

src/main/java/chylex/hee/game/world/feature/tombdungeon/piece/TombDungeonRoom_Tomb_MultiNarrow.kt

@@ -1,17 +1,12 @@
 package chylex.hee.game.world.feature.tombdungeon.piece
 
 import chylex.hee.game.world.Pos
+import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel
 import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
 import chylex.hee.game.world.structure.IStructureWorld
+import java.util.Random
 
 class TombDungeonRoom_Tomb_MultiNarrow(file: String, private val tombsPerColumn: Int, entranceY: Int, isFancy: Boolean) : TombDungeonRoom_Tomb(file, entranceY, allowSecrets = false, isFancy) {
-	override val mobAmount
-		get() = when {
-			tombsPerColumn <= 5 -> MobAmount.LOW
-			tombsPerColumn <= 7 -> MobAmount.MEDIUM
-			else                -> MobAmount.HIGH
-		}
-	
 	override fun generate(world: IStructureWorld, instance: Instance) {
 		super.generate(world, instance)
 		
@@ -26,4 +21,16 @@ class TombDungeonRoom_Tomb_MultiNarrow(file: String, private val tombsPerColumn:
 			})
 		}
 	}
+	
+	override fun getSpawnerTriggerMobAmount(rand: Random, level: TombDungeonLevel): MobAmount? {
+		if (rand.nextInt(10) >= if (level.isFancy) 3 else 5) {
+			return null
+		}
+		
+		return when {
+			tombsPerColumn <= 4 -> MobAmount.LOW
+			tombsPerColumn <= 6 -> MobAmount.MEDIUM
+			else                -> MobAmount.HIGH
+		}
+	}
 }

src/main/java/chylex/hee/game/world/feature/tombdungeon/piece/TombDungeonRoom_Tomb_MultiSpacious.kt

@@ -2,21 +2,16 @@ package chylex.hee.game.world.feature.tombdungeon.piece
 
 import chylex.hee.game.block.BlockGraveDirt
 import chylex.hee.game.world.Pos
+import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel
 import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
 import chylex.hee.game.world.structure.IStructureWorld
 import chylex.hee.system.migration.Facing.EAST
 import chylex.hee.system.migration.Facing.WEST
 import chylex.hee.system.random.nextInt
 import chylex.hee.system.random.nextRounded
+import java.util.Random
 
 class TombDungeonRoom_Tomb_MultiSpacious(file: String, private val tombsPerColumn: Int, entranceY: Int, isFancy: Boolean) : TombDungeonRoom_Tomb(file, entranceY, allowSecrets = false, isFancy) {
-	override val mobAmount
-		get() = when {
-			tombsPerColumn <= 5 -> MobAmount.LOW
-			tombsPerColumn <= 7 -> MobAmount.MEDIUM
-			else                -> MobAmount.HIGH
-		}
-	
 	override fun generate(world: IStructureWorld, instance: Instance) {
 		super.generate(world, instance)
 		
@@ -45,4 +40,15 @@ class TombDungeonRoom_Tomb_MultiSpacious(file: String, private val tombsPerColum
 			})
 		}
 	}
+	
+	override fun getSpawnerTriggerMobAmount(rand: Random, level: TombDungeonLevel): MobAmount? {
+		if (rand.nextInt(10) >= 6) {
+			return null
+		}
+		
+		return when {
+			tombsPerColumn <= 6 -> MobAmount.MEDIUM
+			else                -> MobAmount.HIGH
+		}
+	}
 }

src/main/java/chylex/hee/game/world/feature/tombdungeon/piece/TombDungeonRoom_Tomb_Single.kt

@@ -0,0 +1,26 @@
+package chylex.hee.game.world.feature.tombdungeon.piece
+
+import chylex.hee.game.world.Pos
+import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel
+import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
+import chylex.hee.game.world.structure.IStructureWorld
+import chylex.hee.system.migration.Facing.SOUTH
+import java.util.Random
+
+abstract class TombDungeonRoom_Tomb_Single(file: String, entranceY: Int, isFancy: Boolean) : TombDungeonRoom_Tomb(file, entranceY, allowSecrets = false, isFancy) {
+	override fun generate(world: IStructureWorld, instance: Instance) {
+		super.generate(world, instance)
+		
+		if (world.rand.nextInt(10) < 3) {
+			placeChest(world, instance, Pos(centerX, 1, maxZ - 4), SOUTH)
+		}
+	}
+	
+	final override fun getSpawnerTriggerMobAmount(rand: Random, level: TombDungeonLevel): MobAmount? {
+		return null
+	}
+	
+	protected fun placeSingleTombUndreadSpawner(world: IStructureWorld) {
+		MobSpawnerTrigger.place(world, entrance = connections.first().offset, width = maxX, depth = maxZ, undreads = 1, spiderlings = 0)
+	}
+}

src/main/java/chylex/hee/game/world/feature/tombdungeon/piece/TombDungeonRoom_Tomb_SingleNarrow.kt

@@ -1,19 +1,13 @@
 package chylex.hee.game.world.feature.tombdungeon.piece
 
-import chylex.hee.game.world.Pos
-import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
 import chylex.hee.game.world.structure.IStructureWorld
-import chylex.hee.system.migration.Facing.SOUTH
 
-open class TombDungeonRoom_Tomb_SingleNarrow(file: String, entranceY: Int, isFancy: Boolean) : TombDungeonRoom_Tomb(file, entranceY, allowSecrets = false, isFancy) {
+class TombDungeonRoom_Tomb_SingleNarrow(file: String, entranceY: Int, isFancy: Boolean) : TombDungeonRoom_Tomb_Single(file, entranceY, isFancy) {
-	override val mobAmount: MobAmount?
-		get() = null
-	
 	override fun generate(world: IStructureWorld, instance: Instance) {
 		super.generate(world, instance)
 		
-		if (world.rand.nextInt(10) < 3) {
+		if (world.rand.nextInt(5) == 0) {
-			placeChest(world, instance, Pos(centerX, 1, maxZ - 4), SOUTH)
+			placeSingleTombUndreadSpawner(world)
 		}
 	}
 }

src/main/java/chylex/hee/game/world/feature/tombdungeon/piece/TombDungeonRoom_Tomb_SingleSpacious.kt

@@ -1,13 +1,9 @@
 package chylex.hee.game.world.feature.tombdungeon.piece
 
 import chylex.hee.game.world.Pos
-import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
 import chylex.hee.game.world.structure.IStructureWorld
 
-class TombDungeonRoom_Tomb_SingleSpacious(file: String, entranceY: Int, isFancy: Boolean) : TombDungeonRoom_Tomb_SingleNarrow(file, entranceY, isFancy) {
+class TombDungeonRoom_Tomb_SingleSpacious(file: String, entranceY: Int, isFancy: Boolean) : TombDungeonRoom_Tomb_Single(file, entranceY, isFancy) {
-	override val mobAmount: MobAmount?
-		get() = null
-	
 	override fun generate(world: IStructureWorld, instance: Instance) {
 		super.generate(world, instance)
 		
@@ -18,6 +14,11 @@ class TombDungeonRoom_Tomb_SingleSpacious(file: String, entranceY: Int, isFancy:
 				Pos(centerX - 2, 4, if (rand.nextBoolean()) maxZ - 3 else maxZ - 4),
 				Pos(centerX + 2, 4, if (rand.nextBoolean()) maxZ - 3 else maxZ - 4),
 			))
+			
+			placeSingleTombUndreadSpawner(world)
+		}
+		else if (rand.nextInt(10) < 4) {
+			placeSingleTombUndreadSpawner(world)
 		}
 	}
 }

src/main/java/chylex/hee/network/client/PacketClientFX.kt

@@ -28,6 +28,7 @@ import chylex.hee.game.item.ItemTableLink
 import chylex.hee.game.mechanics.scorching.ScorchingHelper
 import chylex.hee.game.mechanics.table.TableParticleHandler
 import chylex.hee.game.potion.PotionBanishment
+import chylex.hee.game.world.feature.tombdungeon.piece.TombDungeonRoom_Tomb
 import chylex.hee.network.BaseClientPacket
 import chylex.hee.network.fx.IFxData
 import chylex.hee.network.fx.IFxHandler
@@ -79,7 +80,9 @@ class PacketClientFX<T : IFxData>() : BaseClientPacket() {
 			EnderEyeSpawnerParticles.FX_PARTICLE,
 			EndermanTeleportHandler.FX_TELEPORT_FAIL,
 			EndermanTeleportHandler.FX_TELEPORT_OUT_OF_WORLD,
-			PotionBanishment.FX_BANISH
+			PotionBanishment.FX_BANISH,
+			TombDungeonRoom_Tomb.MobSpawnerTrigger.FX_SPAWN_UNDREAD,
+			TombDungeonRoom_Tomb.MobSpawnerTrigger.FX_SPAWN_SPIDERLING,
 		)
 	}
 	

src/system/src/main/java/chylex/hee/game/item/ItemWithComponents.kt

@@ -0,0 +1,18 @@
+package chylex.hee.game.item
+
+import chylex.hee.game.item.components.UseOnBlockComponent
+import chylex.hee.system.component.EntityComponents
+import net.minecraft.item.Item
+import net.minecraft.item.ItemUseContext
+import net.minecraft.util.ActionResultType
+import net.minecraft.util.ActionResultType.FAIL
+import net.minecraft.util.ActionResultType.PASS
+
+open class ItemWithComponents(properties: Properties) : Item(properties) {
+	val components = EntityComponents()
+	
+	final override fun onItemUse(context: ItemUseContext): ActionResultType {
+		val player = context.player ?: return FAIL
+		return components.handle<UseOnBlockComponent, ActionResultType> { useOnBlock(context.world, context.pos, player, context.item, context) } ?: PASS
+	}
+}

src/system/src/main/java/chylex/hee/game/item/components/UseOnBlockComponent.kt

@@ -0,0 +1,12 @@
+package chylex.hee.game.item.components
+
+import chylex.hee.system.migration.EntityPlayer
+import net.minecraft.item.ItemStack
+import net.minecraft.item.ItemUseContext
+import net.minecraft.util.ActionResultType
+import net.minecraft.util.math.BlockPos
+import net.minecraft.world.World
+
+interface UseOnBlockComponent { // TODO use as objects instead of inheriting the interface on Item
+	fun useOnBlock(world: World, pos: BlockPos, player: EntityPlayer, item: ItemStack, ctx: ItemUseContext): ActionResultType?
+}

src/system/src/main/java/chylex/hee/game/loot/rng/RandomBiasedValueRange.kt

@@ -10,24 +10,6 @@ class RandomBiasedValueRange(range: ClosedFloatingPointRange<Float>, private val
 		require(highestChanceValue in min..max) { "highestChanceValue must be between min and max" }
 	}
 	
-	/*
-
-import java.util.Random
-import chylex.hee.system.random.nextBiasedFloat
-import kotlin.math.roundToInt
-
-val rand = Random()
-
-(1..100000).map {
-	val min = 3F
-	val max = 10F
-	val highestChanceValue = 6.5F
-	val biasSoftener = 3F
-	(highestChanceValue + (rand.nextBiasedFloat(biasSoftener) * (0.5F + max - highestChanceValue)) - (rand.nextBiasedFloat(biasSoftener) * (0.5F + highestChanceValue - min))).roundToInt()
-}.groupBy { it }.mapValues { it.value.size }.toList().sortedBy { it.first }
-	
-	 */
-	
 	override fun generateInt(rand: Random): Int {
 		return (highestChanceValue + (rand.nextBiasedFloat(biasSoftener) * (0.5F + max - highestChanceValue)) - (rand.nextBiasedFloat(biasSoftener) * (0.5F + highestChanceValue - min))).roundToInt()
 	}

src/system/src/main/java/chylex/hee/network/fx/FxVecData.kt

@@ -0,0 +1,12 @@
+package chylex.hee.network.fx
+
+import chylex.hee.system.serialization.use
+import chylex.hee.system.serialization.writeVec
+import net.minecraft.network.PacketBuffer
+import net.minecraft.util.math.Vec3d
+
+class FxVecData(private val vec: Vec3d) : IFxData {
+	override fun write(buffer: PacketBuffer) = buffer.use {
+		writeVec(vec)
+	}
+}

src/system/src/main/java/chylex/hee/network/fx/FxVecHandler.kt

@@ -0,0 +1,16 @@
+package chylex.hee.network.fx
+
+import chylex.hee.system.serialization.readVec
+import chylex.hee.system.serialization.use
+import net.minecraft.network.PacketBuffer
+import net.minecraft.util.math.Vec3d
+import net.minecraft.world.World
+import java.util.Random
+
+abstract class FxVecHandler : IFxHandler<FxVecData> {
+	override fun handle(buffer: PacketBuffer, world: World, rand: Random) = buffer.use {
+		handle(world, rand, readVec())
+	}
+	
+	abstract fun handle(world: World, rand: Random, vec: Vec3d)
+}

src/system/src/main/java/chylex/hee/system/component/AbstractAwareComponent.kt

@@ -0,0 +1,8 @@
+package chylex.hee.system.component
+
+abstract class AbstractAwareComponent {
+	var entityComponents: EntityComponents? = null
+	
+	open fun onComponentAttached() {}
+	open fun onComponentDetached() {}
+}

src/system/src/main/java/chylex/hee/system/component/EntityComponents.kt

@@ -0,0 +1,56 @@
+package chylex.hee.system.component
+
+class EntityComponents {
+	private val mutableComponents = mutableListOf<Any>()
+	
+	val components: List<Any>
+		get() = mutableComponents
+	
+	fun attach(component: Any) {
+		require(!mutableComponents.contains(component)) { "[EntityComponents] component must not be registered twice" }
+		mutableComponents.add(component)
+		
+		if (component is AbstractAwareComponent) {
+			require(component.entityComponents === null) { "[EntityComponents] component must not be registered in two entities" }
+			component.entityComponents = this
+			component.onComponentAttached()
+		}
+	}
+	
+	fun detach(component: Any) {
+		if (!mutableComponents.remove(component)) {
+			return
+		}
+		
+		if (component is AbstractAwareComponent) {
+			require(component.entityComponents === this) { "[EntityComponents] component was not registered correctly" }
+			component.onComponentDetached()
+			component.entityComponents = null
+		}
+	}
+	
+	inline fun <reified T> on(f: T.() -> Unit) {
+		for(component in components) {
+			if (component is T) {
+				f(component)
+			}
+		}
+	}
+	
+	inline fun <reified T, U> handle(f: T.() -> U?): U? {
+		for(component in components) {
+			if (component is T) {
+				val result = f(component)
+				if (result != null) {
+					return result
+				}
+			}
+		}
+		
+		return null
+	}
+	
+	inline fun <reified T> list(): List<T> {
+		return components.filterIsInstance<T>()
+	}
+}

src/system/src/main/java/chylex/hee/system/component/general/SerializableComponent.kt

@@ -0,0 +1,20 @@
+package chylex.hee.system.component.general
+
+import chylex.hee.system.component.EntityComponents
+import chylex.hee.system.serialization.TagCompound
+import net.minecraftforge.common.util.INBTSerializable
+
+interface SerializableComponent : INBTSerializable<TagCompound> {
+	val serializationKey: String
+}
+
+fun EntityComponents.serializeTo(tag: TagCompound) {
+	this.on<SerializableComponent> {
+		require(!tag.contains(serializationKey)) { "[SerializableComponent] cannot serialize duplicate key: $serializationKey" }
+		tag.put(serializationKey, serializeNBT())
+	}
+}
+
+fun EntityComponents.deserializeFrom(tag: TagCompound) {
+	this.on<SerializableComponent> { deserializeNBT(tag.getCompound(serializationKey)) }
+}

src/system/src/main/java/chylex/hee/system/component/general/TickableComponent.kt

@@ -0,0 +1,19 @@
+package chylex.hee.system.component.general
+
+import chylex.hee.system.component.EntityComponents
+import net.minecraft.entity.Entity
+
+interface TickableComponent {
+	@JvmDefault fun tickClient() {}
+	@JvmDefault fun tickServer() {}
+}
+
+@JvmName("tickEntity")
+fun <T : Entity> EntityComponents.tick(entity: T) {
+	if (entity.world.isRemote) {
+		this.on(TickableComponent::tickClient)
+	}
+	else {
+		this.on(TickableComponent::tickServer)
+	}
+}

src/test/java/chylex/hee/test/main/RandomBiasedValueStatistics.kt

@@ -0,0 +1,28 @@
+package chylex.hee.test.main
+import chylex.hee.game.loot.rng.RandomBiasedValueRange
+import java.util.Random
+import kotlin.math.roundToInt
+
+fun main() {
+	val min = 3F
+	val max = 10F
+	val highestChanceValue = 6.5F
+	val biasSoftener = 3F
+	
+	val rand = Random()
+	val generator = RandomBiasedValueRange(min..max, highestChanceValue, biasSoftener)
+	val reps = 100000
+	
+	val results = (1..reps).map { generator.generateInt(rand) }
+		.groupBy { it }
+		.mapValues { it.value.size }
+		.toList()
+		.sortedBy { it.first }
+	
+	val pad1 = results.maxOf { it.first.toString().length }
+	val pad2 = results.maxOf { it.second.toString().length }
+	
+	println(results.joinToString("\n") {
+		"${it.first.toString().padStart(pad1)} | ${it.second.toString().padStart(pad2)} | ${((it.second * 100.0) / reps).roundToInt().toString().padStart(2)} %"
+	})
+}

src/test/java/chylex/hee/test/main/TombDungeonMobCounts.kt

@@ -0,0 +1,35 @@
+package chylex.hee.test.main
+
+import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel
+import chylex.hee.game.world.feature.tombdungeon.TombDungeonLevel.MobAmount
+import java.util.Locale.ROOT
+import java.util.Random
+import kotlin.math.roundToInt
+
+fun main() {
+	val rand = Random()
+	
+	for(level in TombDungeonLevel.values()) {
+		val reps = 100000
+		
+		println()
+		println("== ${level.name} ${"=".repeat(24 - level.name.length)}")
+		
+		for(amount in MobAmount.values()) {
+			println()
+			println("   ${amount.name}")
+			println()
+			
+			val results = (1..reps)
+				.map { level.pickUndreadAndSpiderlingSpawns(rand, amount) }
+				.groupingBy { it }
+				.eachCount()
+				.entries
+				.map { ((it.value * 100.0) / reps).roundToInt() to it.key }
+				.sortedWith(compareBy({ -it.first }, { -it.second.first }, { -it.second.second }))
+			
+			println(results.joinToString("\n") { "    U = ${it.second.first}     S = ${it.second.second}     ${it.first.toString().padStart(2)} %" })
+			println("    U ~ ${"%.1f".format(ROOT, results.sumBy { it.second.first * it.first } * 0.01)}   S ~ ${"%.1f".format(ROOT, results.sumBy { it.second.second * it.first } * 0.01)}")
+		}
+	}
+}

src/test/java/chylex/hee/test/unit/mechanics/damage/TestDamageProperties.kt

@@ -1,4 +1,4 @@
-package chylex.hee.test.mechanics.damage
+package chylex.hee.test.unit.mechanics.damage
 
 import chylex.hee.game.mechanics.damage.DamageProperties
 import chylex.hee.game.mechanics.damage.DamageType

src/test/java/chylex/hee/test/unit/mechanics/energy/TestEnergyQuantity.kt

@@ -1,4 +1,4 @@
-package chylex.hee.test.mechanics.energy
+package chylex.hee.test.unit.mechanics.energy
 
 import chylex.hee.game.mechanics.energy.IEnergyQuantity.Floating
 import chylex.hee.game.mechanics.energy.IEnergyQuantity.Internal

src/test/java/chylex/hee/test/unit/system/TestByteBufExt.kt

@@ -1,4 +1,4 @@
-package chylex.hee.test.system.util
+package chylex.hee.test.unit.system
 
 import chylex.hee.game.world.Pos
 import chylex.hee.system.math.Vec

src/test/java/chylex/hee/test/unit/system/TestNbtExt.kt

@@ -1,4 +1,4 @@
-package chylex.hee.test.system.util
+package chylex.hee.test.unit.system
 
 import chylex.hee.game.inventory.cleanupNBT
 import chylex.hee.game.inventory.heeTag