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Paper/patches/server/0935-Fix-DamageSource-API.patch
Owen1212055 89bf08158b
Patch
2024-10-24 09:53:28 -04:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 9 Mar 2024 14:13:04 -0800
Subject: [PATCH] Fix DamageSource API
Uses the correct entity in the EntityDamageByEntity event
Returns the correct entity for API's DamageSource#getCausingEntity
diff --git a/src/main/java/net/minecraft/world/damagesource/DamageSource.java b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
index aee26dd78953ff43306aaa64161f5b9edcdd4b83..bb1a60180e58c1333e7bb33e8acf1b0225eda8a8 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSource.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
@@ -29,8 +29,8 @@ public class DamageSource {
private boolean sweep = false;
private boolean melting = false;
private boolean poison = false;
- private Entity customEntityDamager = null; // This field is a helper for when direct entity damage is not set by vanilla
- private Entity customCausingEntityDamager = null; // This field is a helper for when causing entity damage is not set by vanilla
+ @Nullable
+ private Entity customEventDamager = null; // This field is a helper for when causing entity damage is not set by vanilla // Paper - fix DamageSource API
public DamageSource sweep() {
this.sweep = true;
@@ -59,33 +59,19 @@ public class DamageSource {
return this.poison;
}
- public Entity getDamager() {
- return (this.customEntityDamager != null) ? this.customEntityDamager : this.directEntity;
- }
-
- public Entity getCausingDamager() {
- return (this.customCausingEntityDamager != null) ? this.customCausingEntityDamager : this.causingEntity;
- }
-
- public DamageSource customEntityDamager(Entity entity) {
- // This method is not intended for change the causing entity if is already set
- // also is only necessary if the entity passed is not the direct entity or different from the current causingEntity
- if (this.customEntityDamager != null || this.directEntity == entity || this.causingEntity == entity) {
- return this;
- }
- DamageSource damageSource = this.cloneInstance();
- damageSource.customEntityDamager = entity;
- return damageSource;
+ // Paper start - fix DamageSource API
+ @Nullable
+ public Entity getCustomEventDamager() {
+ return (this.customEventDamager != null) ? this.customEventDamager : this.directEntity;
}
- public DamageSource customCausingEntityDamager(Entity entity) {
- // This method is not intended for change the causing entity if is already set
- // also is only necessary if the entity passed is not the direct entity or different from the current causingEntity
- if (this.customCausingEntityDamager != null || this.directEntity == entity || this.causingEntity == entity) {
- return this;
+ public DamageSource customEventDamager(Entity entity) {
+ if (this.directEntity != null) {
+ throw new IllegalStateException("Cannot set custom event damager when direct entity is already set (report a bug to Paper)");
}
DamageSource damageSource = this.cloneInstance();
- damageSource.customCausingEntityDamager = entity;
+ damageSource.customEventDamager = entity;
+ // Paper end - fix DamageSource API
return damageSource;
}
diff --git a/src/main/java/net/minecraft/world/damagesource/DamageSources.java b/src/main/java/net/minecraft/world/damagesource/DamageSources.java
index fddbdb7322a2063996a28c5c3d93c265188b1256..be87cb3cfa15a7d889118cdc4b87232e30749023 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSources.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSources.java
@@ -270,13 +270,7 @@ public class DamageSources {
}
public DamageSource explosion(@Nullable Entity source, @Nullable Entity attacker) {
- // CraftBukkit start
- return this.explosion(source, attacker, attacker != null && source != null ? DamageTypes.PLAYER_EXPLOSION : DamageTypes.EXPLOSION);
- }
-
- public DamageSource explosion(@Nullable Entity entity, @Nullable Entity entity1, ResourceKey<DamageType> resourceKey) {
- return this.source(resourceKey, entity, entity1);
- // CraftBukkit end
+ return this.source(attacker != null && source != null ? DamageTypes.PLAYER_EXPLOSION : DamageTypes.EXPLOSION, source, attacker); // Paper - revert to vanilla
}
public DamageSource sonicBoom(Entity attacker) {
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 0223f2e282a85882645f4ed52891c566a268f37b..3d4bb855dec45685d6e336d913903341f0ca4a11 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -3388,7 +3388,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
return;
}
- if (!this.hurtServer(world, this.damageSources().lightningBolt().customEntityDamager(lightning), 5.0F)) {
+ if (!this.hurtServer(world, this.damageSources().lightningBolt().customEventDamager(lightning), 5.0F)) { // Paper - fix DamageSource API
return;
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/animal/Turtle.java b/src/main/java/net/minecraft/world/entity/animal/Turtle.java
index 8e91f930e19a91db44274e4ecd98841362867609..79e1e911333d4a009c0b4e2462b41a0c146b9a06 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Turtle.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Turtle.java
@@ -341,7 +341,7 @@ public class Turtle extends Animal {
@Override
public void thunderHit(ServerLevel world, LightningBolt lightning) {
- this.hurtServer(world, this.damageSources().lightningBolt().customEntityDamager(lightning), Float.MAX_VALUE); // CraftBukkit
+ this.hurtServer(world, this.damageSources().lightningBolt().customEventDamager(lightning), Float.MAX_VALUE); // CraftBukkit // Paper - fix DamageSource API
}
@Override
diff --git a/src/main/java/net/minecraft/world/entity/decoration/BlockAttachedEntity.java b/src/main/java/net/minecraft/world/entity/decoration/BlockAttachedEntity.java
index 608acb4f3cb8f9a0dc10b819ed4bf577c229dd2c..7ed127a0a0c0d6e7b726216c48ef37af4db37628 100644
--- a/src/main/java/net/minecraft/world/entity/decoration/BlockAttachedEntity.java
+++ b/src/main/java/net/minecraft/world/entity/decoration/BlockAttachedEntity.java
@@ -108,7 +108,7 @@ public abstract class BlockAttachedEntity extends Entity {
} else {
if (!this.isRemoved()) {
// CraftBukkit start - fire break events
- Entity damager = (source.isDirect()) ? source.getDirectEntity() : source.getEntity();
+ Entity damager = (!source.isDirect() && source.getEntity() != null) ? source.getEntity() : source.getDirectEntity(); // Paper - fix DamageSource API
HangingBreakEvent event;
if (damager != null) {
event = new HangingBreakByEntityEvent((Hanging) this.getBukkitEntity(), damager.getBukkitEntity(), source.is(DamageTypeTags.IS_EXPLOSION) ? HangingBreakEvent.RemoveCause.EXPLOSION : HangingBreakEvent.RemoveCause.ENTITY);
diff --git a/src/main/java/net/minecraft/world/entity/monster/Creeper.java b/src/main/java/net/minecraft/world/entity/monster/Creeper.java
index 7a18dc59aed5294cd442994aa2d34ea00b877f46..1906dfc22af208d6e801ad4a8f2f9e9702432691 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Creeper.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Creeper.java
@@ -271,7 +271,7 @@ public class Creeper extends Monster {
if (!event.isCancelled()) {
// CraftBukkit end
this.dead = true;
- worldserver.explode(this, net.minecraft.world.level.Explosion.getDefaultDamageSource(this.level(), this).customCausingEntityDamager(this.entityIgniter), null, this.getX(), this.getY(), this.getZ(), event.getRadius(), event.getFire(), Level.ExplosionInteraction.MOB); // CraftBukkit
+ worldserver.explode(this, this.getX(), this.getY(), this.getZ(), event.getRadius(), event.getFire(), Level.ExplosionInteraction.MOB); // CraftBukkit // Paper - fix DamageSource API (revert to vanilla, no, just no, don't change this)
this.spawnLingeringCloud();
this.triggerOnDeathMobEffects(worldserver, Entity.RemovalReason.KILLED);
this.discard(EntityRemoveEvent.Cause.EXPLODE); // CraftBukkit - add Bukkit remove cause
diff --git a/src/main/java/net/minecraft/world/entity/projectile/EvokerFangs.java b/src/main/java/net/minecraft/world/entity/projectile/EvokerFangs.java
index c08074d43d105b30ed5093614062a3bcafadfb74..ccc72a2cf02a633655b95f961be310879d8f904f 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/EvokerFangs.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/EvokerFangs.java
@@ -135,7 +135,7 @@ public class EvokerFangs extends Entity implements TraceableEntity {
if (target.isAlive() && !target.isInvulnerable() && target != entityliving1) {
if (entityliving1 == null) {
- target.hurt(this.damageSources().magic().customEntityDamager(this), 6.0F); // CraftBukkit
+ target.hurt(this.damageSources().magic().customEventDamager(this), 6.0F); // CraftBukkit // Paper - fix DamageSource API
} else {
if (entityliving1.isAlliedTo((Entity) target)) {
return;
diff --git a/src/main/java/net/minecraft/world/entity/projectile/ThrownEnderpearl.java b/src/main/java/net/minecraft/world/entity/projectile/ThrownEnderpearl.java
index 080d886008e1f596733ea5331b32db35adef2e9b..5f790dd24f2bdae827c6dc597064b9b265089751 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/ThrownEnderpearl.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/ThrownEnderpearl.java
@@ -170,7 +170,7 @@ public class ThrownEnderpearl extends ThrowableItemProjectile {
if (entityplayer1 != null) {
entityplayer1.resetFallDistance();
entityplayer1.resetCurrentImpulseContext();
- entityplayer1.hurtServer(entityplayer.serverLevel(), this.damageSources().enderPearl().customEntityDamager(this), 5.0F); // CraftBukkit
+ entityplayer1.hurtServer(entityplayer.serverLevel(), this.damageSources().enderPearl().customEventDamager(this), 5.0F); // CraftBukkit // Paper - fix DamageSource API
}
this.playSound(worldserver, vec3d);
diff --git a/src/main/java/net/minecraft/world/entity/projectile/WitherSkull.java b/src/main/java/net/minecraft/world/entity/projectile/WitherSkull.java
index 8831af1000d17d5a60302e3b0c522b2d2f082484..4c47b30867e30d84908abf93dbefc252bc8c3453 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/WitherSkull.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/WitherSkull.java
@@ -77,7 +77,7 @@ public class WitherSkull extends AbstractHurtingProjectile {
}
}
} else {
- flag = entity.hurtServer(worldserver, this.damageSources().magic().customCausingEntity(this), 5.0F); // Paper - Fire EntityDamageByEntityEvent for unowned wither skulls
+ flag = entity.hurtServer(worldserver, this.damageSources().magic().customEventDamager(this), 5.0F); // Paper - Fire EntityDamageByEntityEvent for unowned wither skulls // Paper - fix DamageSource API
}
if (flag && entity instanceof LivingEntity entityliving) {
diff --git a/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSource.java b/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSource.java
index 8532324060eed772a10e2a3429890438cf32f9ba..7df86e7124a9ed359f05324b8fc4c8862f7e4b79 100644
--- a/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSource.java
+++ b/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSource.java
@@ -41,13 +41,13 @@ public class CraftDamageSource implements DamageSource {
@Override
public org.bukkit.entity.Entity getCausingEntity() {
- net.minecraft.world.entity.Entity entity = this.getHandle().getCausingDamager();
+ net.minecraft.world.entity.Entity entity = this.getHandle().getEntity(); // Paper - fix DamageSource API - revert to vanilla
return (entity != null) ? entity.getBukkitEntity() : null;
}
@Override
public org.bukkit.entity.Entity getDirectEntity() {
- net.minecraft.world.entity.Entity entity = this.getHandle().getDamager();
+ net.minecraft.world.entity.Entity entity = this.getHandle().getDirectEntity(); // Paper - fix DamageSource API
return (entity != null) ? entity.getBukkitEntity() : null;
}
@@ -65,7 +65,7 @@ public class CraftDamageSource implements DamageSource {
@Override
public boolean isIndirect() {
- return this.getHandle().getCausingDamager() != this.getHandle().getDamager();
+ return !this.getHandle().isDirect(); // Paper - fix DamageSource API
}
@Override
diff --git a/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSourceBuilder.java b/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSourceBuilder.java
index 4c6e15535fa40aad8cf1920f392589404f9ba79c..35eb95ef6fb6a0f7ea63351e90741c489fdd15f9 100644
--- a/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSourceBuilder.java
+++ b/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSourceBuilder.java
@@ -41,6 +41,11 @@ public class CraftDamageSourceBuilder implements DamageSource.Builder {
@Override
public DamageSource build() {
+ // Paper start - fix DamageCause API
+ if (this.causingEntity != null && this.directEntity == null) {
+ throw new IllegalArgumentException("Direct entity must be set if causing entity is set");
+ }
+ // Paper end - fix DamageCause API
return CraftDamageSource.buildFromBukkit(this.damageType, this.causingEntity, this.directEntity, this.damageLocation);
}
}
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 89109bf9ad85b1859ce6ae0808ac0a1fb2cb6816..b0e7d1841d71e377d5ad596a22dfafb90d4f80cc 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1092,7 +1092,7 @@ public class CraftEventFactory {
private static EntityDamageEvent handleEntityDamageEvent(Entity entity, DamageSource source, Map<DamageModifier, Double> modifiers, Map<DamageModifier, Function<? super Double, Double>> modifierFunctions, boolean cancelled) {
CraftDamageSource bukkitDamageSource = new CraftDamageSource(source);
- Entity damager = (source.getDamager() != null) ? source.getDamager() : source.getEntity();
+ final Entity damager = source.getCustomEventDamager(); // Paper - fix DamageSource API
if (source.is(DamageTypeTags.IS_EXPLOSION)) {
if (damager == null) {
return CraftEventFactory.callEntityDamageEvent(source.getDirectBlock(), source.getDirectBlockState(), entity, DamageCause.BLOCK_EXPLOSION, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
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