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PaperMC/patches/server/0206-Add-EntityKnockbackByEntityEvent-and-EntityPushedByE.patch
Jake Potrebic 3e90a19183
Updated Upstream (Bukkit/CraftBukkit) 
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
304e83eb PR-1002: Improve documentation and implementation of getMaxStackSize
e8215ea2 SPIGOT-7638: Library loader does not seem to resolve every dependency
79c595c0 SPIGOT-7637: Bad logic in checking nullability of AttributeModifier slots

CraftBukkit Changes:
91b1fc3f1 SPIGOT-7644: Fix ItemMeta#getAsString
4e77a81e1 SPIGOT-7615: PlayerLeashEntityEvent cancelled eats lead
996f660f3 Do not remove leash knot if leasing to an existing leash knot gets cancelled
f70367d42 SPIGOT-7643: Fix inverted leash event cancelled usage and remove leash knot if no entity gets leashed
7ddb48294 SPIGOT-7640: Abnormal jumping height of wind charge
080c8711e SPIGOT-7639: Incoming plugin channels not working
ad549847e Open a direct connection instead of pinging mojang server to check if it is reachable
38e2926c5 SPIGOT-7365: DamageCause blocked by shield should trigger invulnerableTime
2024-04-27 18:00:01 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Brokkonaut <hannos17@gmx.de>
Date: Mon, 18 Jun 2018 15:46:23 +0200
Subject: [PATCH] Add EntityKnockbackByEntityEvent and
EntityPushedByEntityAttackEvent
Co-authored-by: aerulion <aerulion@gmail.com>
This event is called when an entity receives knockback by another entity.
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index e612921a7fb68dd74d8fd4084a8beccc299ff6ea..49b100e2cf9868c4f06aae0bf538fcd4a2ae0ba9 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1892,9 +1892,23 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
}
}
- public void push(double deltaX, double deltaY, double deltaZ) {
- this.setDeltaMovement(this.getDeltaMovement().add(deltaX, deltaY, deltaZ));
+ public final void push(double deltaX, double deltaY, double deltaZ) { // Paper - override the added overload below
+ // Paper start - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
+ this.push(deltaX, deltaY, deltaZ, null);
+ }
+
+ public void push(double deltaX, double deltaY, double deltaZ, @org.jetbrains.annotations.Nullable Entity pushingEntity) {
+ org.bukkit.util.Vector delta = new org.bukkit.util.Vector(deltaX, deltaY, deltaZ);
+ if (pushingEntity != null) {
+ io.papermc.paper.event.entity.EntityPushedByEntityAttackEvent event = new io.papermc.paper.event.entity.EntityPushedByEntityAttackEvent(getBukkitEntity(), pushingEntity.getBukkitEntity(), delta);
+ if (!event.callEvent()) {
+ return;
+ }
+ delta = event.getAcceleration();
+ }
+ this.setDeltaMovement(this.getDeltaMovement().add(delta.getX(), delta.getY(), delta.getZ()));
this.hasImpulse = true;
+ // Paper end - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
}
protected void markHurt() {
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 3f50533b89345a74392e0e6ef0407e6aa544876e..b153247b4be38e8ecaf3df64db55df88b7501cfd 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1593,7 +1593,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
}
protected void blockedByShield(LivingEntity target) {
- target.knockback(0.5D, target.getX() - this.getX(), target.getZ() - this.getZ(), null, EntityKnockbackEvent.KnockbackCause.SHIELD_BLOCK); // CraftBukkit
+ target.knockback(0.5D, target.getX() - this.getX(), target.getZ() - this.getZ(), this, EntityKnockbackEvent.KnockbackCause.SHIELD_BLOCK); // CraftBukkit // Paper - fix attacker
}
private boolean checkTotemDeathProtection(DamageSource source) {
@@ -1856,7 +1856,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
this.knockback(strength, x, z, null, EntityKnockbackEvent.KnockbackCause.UNKNOWN);
}
- public void knockback(double d0, double d1, double d2, Entity attacker, EntityKnockbackEvent.KnockbackCause cause) {
+ public void knockback(double d0, double d1, double d2, @Nullable Entity attacker, EntityKnockbackEvent.KnockbackCause cause) { // Paper - add nullable to attacker param
d0 *= 1.0D - this.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE);
if (true || d0 > 0.0D) { // CraftBukkit - Call event even when force is 0
//this.hasImpulse = true; // CraftBukkit - Move down
@@ -1868,8 +1868,22 @@ public abstract class LivingEntity extends Entity implements Attackable {
return;
}
+ // Paper start - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
+ final org.bukkit.util.Vector currentMovement = this.getBukkitEntity().getVelocity();
+ org.bukkit.util.Vector resultingMovement = event.getFinalKnockback();
+ final org.bukkit.util.Vector deltaMovement = resultingMovement.clone().subtract(currentMovement);
+ if (attacker != null) {
+ final com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent knockbackEvent = new com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent(this.getBukkitLivingEntity(), attacker.getBukkitEntity(), (float) event.getForce(), deltaMovement);
+ if (!knockbackEvent.callEvent()) {
+ return;
+ }
+
+ // Back from delta to the absolute vector
+ resultingMovement = currentMovement.add(knockbackEvent.getAcceleration());
+ }
this.hasImpulse = true;
- this.setDeltaMovement(event.getFinalKnockback().getX(), event.getFinalKnockback().getY(), event.getFinalKnockback().getZ());
+ this.setDeltaMovement(resultingMovement.getX(), resultingMovement.getY(), resultingMovement.getZ());
+ // Paper end - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
// CraftBukkit end
}
}
diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/RamTarget.java b/src/main/java/net/minecraft/world/entity/ai/behavior/RamTarget.java
index 312398b7f1281144a0529a743d2a09376d575ff5..0c63779af7e1c790160fb2ab86bf455219b3cc36 100644
--- a/src/main/java/net/minecraft/world/entity/ai/behavior/RamTarget.java
+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/RamTarget.java
@@ -83,7 +83,7 @@ public class RamTarget extends Behavior<Goat> {
float f = 0.25F * (float)(i - j);
float g = Mth.clamp(entity.getSpeed() * 1.65F, 0.2F, 3.0F) + f;
float h = livingEntity.isDamageSourceBlocked(world.damageSources().mobAttack(entity)) ? 0.5F : 1.0F;
- livingEntity.knockback((double)(h * g) * this.getKnockbackForce.applyAsDouble(entity), this.ramDirection.x(), this.ramDirection.z());
+ livingEntity.knockback(h * g * this.getKnockbackForce.applyAsDouble(entity), this.ramDirection.x(), this.ramDirection.z(), entity, org.bukkit.event.entity.EntityKnockbackEvent.KnockbackCause.ENTITY_ATTACK); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
this.finishRam(world, entity);
world.playSound(null, entity, this.getImpactSound.apply(entity), SoundSource.NEUTRAL, 1.0F, 1.0F);
} else if (this.hasRammedHornBreakingBlock(world, entity)) {
diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/warden/SonicBoom.java b/src/main/java/net/minecraft/world/entity/ai/behavior/warden/SonicBoom.java
index aa8909498c26f095060a1df364b9e20d964a6cc3..30502849f79ce0f472e4289043c7d8ec460d3f20 100644
--- a/src/main/java/net/minecraft/world/entity/ai/behavior/warden/SonicBoom.java
+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/warden/SonicBoom.java
@@ -83,7 +83,7 @@ public class SonicBoom extends Behavior<Warden> {
if (target.hurt(world.damageSources().sonicBoom(entity), 10.0F)) {
double d = 0.5 * (1.0 - target.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE));
double e = 2.5 * (1.0 - target.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE));
- target.push(vec33.x() * e, vec33.y() * d, vec33.z() * e);
+ target.push(vec33.x() * e, vec33.y() * d, vec33.z() * e, entity); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
}
});
}
diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
index 963fdb4132001aa781eda45b75cb4df97d782ddc..3e2f83e2c695b024bdec2c5e11ab38596730ed4a 100644
--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
@@ -457,7 +457,7 @@ public class EnderDragon extends Mob implements Enemy {
double d3 = entity.getZ() - d1;
double d4 = Math.max(d2 * d2 + d3 * d3, 0.1D);
- entity.push(d2 / d4 * 4.0D, 0.20000000298023224D, d3 / d4 * 4.0D);
+ entity.push(d2 / d4 * 4.0D, 0.20000000298023224D, d3 / d4 * 4.0D, this); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
if (!this.phaseManager.getCurrentPhase().isSitting() && ((LivingEntity) entity).getLastHurtByMobTimestamp() < entity.tickCount - 2) {
entity.hurt(this.damageSources().mobAttack(this), 5.0F);
this.doEnchantDamageEffects(this, entity);
diff --git a/src/main/java/net/minecraft/world/entity/decoration/HangingEntity.java b/src/main/java/net/minecraft/world/entity/decoration/HangingEntity.java
index 237e5927beb28bfc09d8c587782bf52799a6b604..47a62680279f15ac93eb521f7ec93c3b8d52c602 100644
--- a/src/main/java/net/minecraft/world/entity/decoration/HangingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/decoration/HangingEntity.java
@@ -249,7 +249,7 @@ public abstract class HangingEntity extends Entity {
}
@Override
- public void push(double deltaX, double deltaY, double deltaZ) {
+ public void push(double deltaX, double deltaY, double deltaZ, @org.jetbrains.annotations.Nullable Entity pushingEntity) { // Paper - add push source entity param
if (false && !this.level().isClientSide && !this.isRemoved() && deltaX * deltaX + deltaY * deltaY + deltaZ * deltaZ > 0.0D) { // CraftBukkit - not needed
this.kill();
this.dropItem((Entity) null);
diff --git a/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java b/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
index f36746cd077bca3145b6168a60f05050d3ba14c7..d4f498789ae1d93533f058b0ce4981eed1ce8ea2 100644
--- a/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
+++ b/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
@@ -153,9 +153,9 @@ public class ItemFrame extends HangingEntity {
}
@Override
- public void push(double deltaX, double deltaY, double deltaZ) {
+ public void push(double deltaX, double deltaY, double deltaZ, @org.jetbrains.annotations.Nullable Entity pushingEntity) { // Paper - add push source entity param
if (!this.fixed) {
- super.push(deltaX, deltaY, deltaZ);
+ super.push(deltaX, deltaY, deltaZ, pushingEntity); // Paper - add push source entity param
}
}
diff --git a/src/main/java/net/minecraft/world/entity/monster/Ravager.java b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
index d02c7f6a2a2631a67fb6e078d6bc81971e712038..1264fb03d2dcab088fc4a7c2788c9f9df53cba5d 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Ravager.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
@@ -257,7 +257,7 @@ public class Ravager extends Raider {
double d1 = entity.getZ() - this.getZ();
double d2 = Math.max(d0 * d0 + d1 * d1, 0.001D);
- entity.push(d0 / d2 * 4.0D, 0.2D, d1 / d2 * 4.0D);
+ entity.push(d0 / d2 * 4.0D, 0.2D, d1 / d2 * 4.0D, this); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
}
@Override
diff --git a/src/main/java/net/minecraft/world/entity/monster/hoglin/HoglinBase.java b/src/main/java/net/minecraft/world/entity/monster/hoglin/HoglinBase.java
index 38c27b4aa37e8b046e3eccdde3f527eb555da6f8..05dee42941a842bf4bba9480a2c04a142541ac29 100644
--- a/src/main/java/net/minecraft/world/entity/monster/hoglin/HoglinBase.java
+++ b/src/main/java/net/minecraft/world/entity/monster/hoglin/HoglinBase.java
@@ -40,7 +40,7 @@ public interface HoglinBase {
double j = f * (double)(attacker.level().random.nextFloat() * 0.5F + 0.2F);
Vec3 vec3 = new Vec3(g, 0.0, h).normalize().scale(j).yRot(i);
double k = f * (double)attacker.level().random.nextFloat() * 0.5;
- target.push(vec3.x, k, vec3.z);
+ target.push(vec3.x, k, vec3.z, attacker); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
target.hurtMarked = true;
}
}
diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
index 705a756522473681516d60946ddd917647650bd4..4e1c032c7cdca81021c280a15db89e63a90ffe42 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -1295,7 +1295,7 @@ public abstract class Player extends LivingEntity {
if (target instanceof LivingEntity) {
((LivingEntity) target).knockback((double) ((float) i * 0.5F), (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, EntityKnockbackEvent.KnockbackCause.ENTITY_ATTACK); // CraftBukkit
} else {
- target.push((double) (-Mth.sin(this.getYRot() * 0.017453292F) * (float) i * 0.5F), 0.1D, (double) (Mth.cos(this.getYRot() * 0.017453292F) * (float) i * 0.5F));
+ target.push((double) (-Mth.sin(this.getYRot() * 0.017453292F) * (float) i * 0.5F), 0.1D, (double) (Mth.cos(this.getYRot() * 0.017453292F) * (float) i * 0.5F), this); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
}
this.setDeltaMovement(this.getDeltaMovement().multiply(0.6D, 1.0D, 0.6D));
diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
index efcfbcb3dc352c9015cc9121dc8d98e8deed8bfd..464ba41fd284e29374dbc81c984cf9486e51393e 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
@@ -421,7 +421,7 @@ public abstract class AbstractArrow extends Projectile {
Vec3 vec3d = this.getDeltaMovement().multiply(1.0D, 0.0D, 1.0D).normalize().scale((double) this.knockback * 0.6D * d0);
if (vec3d.lengthSqr() > 0.0D) {
- entityliving.push(vec3d.x, 0.1D, vec3d.z);
+ entityliving.push(vec3d.x, 0.1D, vec3d.z, this); // Paper
}
}
diff --git a/src/main/java/net/minecraft/world/entity/projectile/windcharge/AbstractWindCharge.java b/src/main/java/net/minecraft/world/entity/projectile/windcharge/AbstractWindCharge.java
index 9f9b7373c9a714597858ddcd8932e31b902cf5a1..f7f26d595072372004143c4e26506ed505aff7d8 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/windcharge/AbstractWindCharge.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/windcharge/AbstractWindCharge.java
@@ -89,7 +89,7 @@ public abstract class AbstractWindCharge extends AbstractHurtingProjectile imple
}
@Override
- public void push(double deltaX, double deltaY, double deltaZ) {}
+ public void push(double deltaX, double deltaY, double deltaZ, @org.jetbrains.annotations.Nullable Entity pushingEntity) {} // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
public abstract void explode();
diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
index 94f72ff58ac5206878a81e89d32e81c17b1bd1fb..b5b29210d9a6125d98e7dd737ca25f40545e512b 100644
--- a/src/main/java/net/minecraft/world/level/Explosion.java
+++ b/src/main/java/net/minecraft/world/level/Explosion.java
@@ -303,6 +303,16 @@ public class Explosion {
// since the code below (the setDeltaMovement call as well as the hitPlayers map)
// want the vector to be the relative velocity will the event provides the absolute velocity
vec3d1 = (event.isCancelled()) ? Vec3.ZERO : new Vec3(event.getFinalKnockback().getX(), event.getFinalKnockback().getY(), event.getFinalKnockback().getZ()).subtract(entity.getDeltaMovement());
+ // Paper start - call EntityKnockbackByEntityEvent for explosions
+ if (this.damageSource.getEntity() != null || this.source != null) {
+ final org.bukkit.entity.Entity hitBy = this.damageSource.getEntity() != null ? this.damageSource.getEntity().getBukkitEntity() : this.source.getBukkitEntity();
+ com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent paperEvent = new com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent(((LivingEntity) entity).getBukkitLivingEntity(), hitBy, (float) event.getForce(), org.bukkit.craftbukkit.util.CraftVector.toBukkit(vec3d1));
+ if (!paperEvent.callEvent()) {
+ continue;
+ }
+ vec3d1 = org.bukkit.craftbukkit.util.CraftVector.toNMS(paperEvent.getAcceleration());
+ }
+ // Paper end - call EntityKnockbackByEntityEvent for explosions
}
// CraftBukkit end
entity.setDeltaMovement(entity.getDeltaMovement().add(vec3d1));
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