VAMPIRISM

Author: mrsterner

src/main/kotlin/dev/sterner/api/item/ItemAbility.kt

@@ -14,7 +14,7 @@ enum class ItemAbility : StringRepresentable {
     SCORCHING_HEAT,//Fully implemented
     EXCAVATOR,//Fully implemented
     EARTH_RUMMAGER,
-    VAMPIRISM,//TODO re-implement. Saps the target's lifeforce, healing half a heart for each spirit their soul has / half a heart for each armor point a player has, with a 10 tick cooldown for each half heart
+    VAMPIRISM,
     HARVEST,
     OPENER,//TODO re-implement. First hit on a mob deals increased damage and grants a stack of Wrath, lasting a minute, up to 10 stacks. Transforms into Finale when you reach 10 stacks, or sneak right click
     FINALE,//TODO implement. Consumes All stacks of Opening Strike, multiplying damage dealt by the amount of stacks total.

src/main/kotlin/dev/sterner/common/components/VoidBoundPlayerItemAbilityComponent.kt

@@ -0,0 +1,68 @@
+package dev.sterner.common.components
+
+import dev.onyxstudios.cca.api.v3.component.sync.AutoSyncedComponent
+import dev.onyxstudios.cca.api.v3.component.tick.CommonTickingComponent
+import dev.sterner.api.item.ItemAbility
+import dev.sterner.api.util.VoidBoundItemUtils
+import dev.sterner.api.util.VoidBoundPlayerUtils
+import dev.sterner.api.util.VoidBoundUtils
+import dev.sterner.registry.VoidBoundComponentRegistry
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.sounds.SoundEvents
+import net.minecraft.world.entity.LivingEntity
+import net.minecraft.world.entity.player.Player
+
+class VoidBoundPlayerItemAbilityComponent(private val player: Player) : AutoSyncedComponent, CommonTickingComponent {
+
+    private var vampirismCooldown: Int = 0
+
+    fun tryUseVampirism(target: LivingEntity){
+        if (vampirismCooldown <= 0) {
+            val healing = performVampirism(target)
+            if (healing > 0) {
+                player.heal(healing.toFloat())
+                player.playSound(SoundEvents.BUBBLE_COLUMN_UPWARDS_INSIDE)
+                vampirismCooldown = 10 * healing
+                sync()
+            }
+        }
+    }
+
+    private fun performVampirism(target: LivingEntity): Int {
+        var healing = 0
+        if (target is Player) {
+           healing += target.armorValue
+        } else {
+            val data = VoidBoundUtils.getSpiritData(target)
+            if (data.isPresent) {
+                val d = data.get()
+                d.forEach {
+                    healing += it.count
+                }
+            } else {
+                healing += 2
+            }
+        }
+
+        return healing
+    }
+
+    override fun readFromNbt(tag: CompoundTag) {
+        vampirismCooldown = tag.getInt("vampirm")
+    }
+
+    override fun writeToNbt(tag: CompoundTag) {
+       tag.putInt("vampirm", vampirismCooldown)
+    }
+
+    override fun tick() {
+        if (vampirismCooldown > 0 && VoidBoundItemUtils.getActiveAbility(player.mainHandItem) == ItemAbility.VAMPIRISM) {
+            vampirismCooldown--
+            sync()
+        }
+    }
+
+    private fun sync(){
+        VoidBoundComponentRegistry.VOID_BOUND_PLAYER_ITEM_ABILITY_COMPONENT.sync(player)
+    }
+}

src/main/kotlin/dev/sterner/common/item/equipment/ichor/IchoriumVorpal.kt

@@ -6,6 +6,7 @@ import dev.sterner.api.item.ItemAbility
 import dev.sterner.api.util.VoidBoundItemUtils
 import dev.sterner.common.item.equipment.GalesEdgeItem.Companion.ascend
 import dev.sterner.mixin.HoeItemTillablesAccessor
+import dev.sterner.registry.VoidBoundComponentRegistry
 import io.github.fabricators_of_create.porting_lib.common.util.IPlantable
 import io.github.fabricators_of_create.porting_lib.event.common.BlockEvents.BreakEvent
 import net.minecraft.core.BlockPos
@@ -47,6 +48,13 @@ class IchoriumVorpal(
         return 72000
     }
 
+    override fun hurtEnemy(stack: ItemStack, target: LivingEntity, attacker: LivingEntity): Boolean {
+        if (attacker is Player && VoidBoundItemUtils.getActiveAbility(stack) == ItemAbility.VAMPIRISM) {
+            VoidBoundComponentRegistry.VOID_BOUND_PLAYER_ITEM_ABILITY_COMPONENT.get(attacker).tryUseVampirism(target)
+        }
+        return super.hurtEnemy(stack, target, attacker)
+    }
+
     override fun canAttackBlock(state: BlockState?, level: Level?, pos: BlockPos?, player: Player): Boolean {
         return VoidBoundItemUtils.getActiveAbility(player.mainHandItem) == ItemAbility.HARVEST
     }

src/main/kotlin/dev/sterner/registry/VoidBoundComponentRegistry.kt

@@ -8,10 +8,7 @@ import dev.onyxstudios.cca.api.v3.entity.RespawnCopyStrategy
 import dev.onyxstudios.cca.api.v3.world.WorldComponentFactoryRegistry
 import dev.onyxstudios.cca.api.v3.world.WorldComponentInitializer
 import dev.sterner.VoidBound
-import dev.sterner.common.components.VoidBoundEntityComponent
-import dev.sterner.common.components.VoidBoundPlayerComponent
-import dev.sterner.common.components.VoidBoundRevelationComponent
-import dev.sterner.common.components.VoidBoundWorldComponent
+import dev.sterner.common.components.*
 import net.minecraft.world.entity.LivingEntity
 import net.minecraft.world.entity.player.Player
 
@@ -46,6 +43,15 @@ class VoidBoundComponentRegistry : WorldComponentInitializer, EntityComponentIni
                 )
             }, RespawnCopyStrategy.ALWAYS_COPY
         )
+
+        registry.registerForPlayers(
+            VOID_BOUND_PLAYER_ITEM_ABILITY_COMPONENT,
+            { entity: Player ->
+                VoidBoundPlayerItemAbilityComponent(
+                    entity
+                )
+            }, RespawnCopyStrategy.ALWAYS_COPY
+        )
     }
 
     companion object {
@@ -64,6 +70,11 @@ class VoidBoundComponentRegistry : WorldComponentInitializer, EntityComponentIni
             VoidBoundPlayerComponent::class.java
         )
 
+        val VOID_BOUND_PLAYER_ITEM_ABILITY_COMPONENT: ComponentKey<VoidBoundPlayerItemAbilityComponent> = ComponentRegistry.getOrCreate(
+            VoidBound.id("player_item_ability"),
+            VoidBoundPlayerItemAbilityComponent::class.java
+        )
+
         val VOID_BOUND_REVELATION_COMPONENT: ComponentKey<VoidBoundRevelationComponent> = ComponentRegistry.getOrCreate(
             VoidBound.id("revelation"),
             VoidBoundRevelationComponent::class.java

src/main/resources/fabric.mod.json

@@ -49,7 +49,8 @@
       "voidbound:world",
       "voidbound:entity",
       "voidbound:player",
-      "voidbound:revelation"
+      "voidbound:revelation",
+      "voidbound:player_item_ability"
     ]
   }
 }