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Paper/patches/server/0210-Implement-EntityKnockbackByEntityEvent-and-EntityPus.patch
Spottedleaf e88856dd75 Chunk system patch
2023-09-22 13:13:57 -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] Implement 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 1d21c5d5ea84f76d4cafe9d2d22226cf50232ee1..ca773bca9df5a313d979e97e3a5245e701353793 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1902,8 +1902,17 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
}
public void push(double deltaX, double deltaY, double deltaZ) {
- this.setDeltaMovement(this.getDeltaMovement().add(deltaX, deltaY, deltaZ));
- this.hasImpulse = true;
+ // Paper start - call EntityPushedByEntityEvent
+ 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 || new io.papermc.paper.event.entity.EntityPushedByEntityAttackEvent(getBukkitEntity(), pushingEntity.getBukkitEntity(), delta).callEvent()) {
+ this.setDeltaMovement(this.getDeltaMovement().add(delta.getX(), delta.getY(), delta.getZ()));
+ this.hasImpulse = true;
+ }
+ // Paper end - call EntityPushedByEntityEvent
}
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 5fb892e47b1ad33435e2aafeb1212ffe6b89ffdd..7d7c8772bd8dfb96cfff2c1f020719c0156a09cd 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1516,7 +1516,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
d0 = (Math.random() - Math.random()) * 0.01D;
}
- this.knockback(0.4000000059604645D, d0, d1);
+ this.knockback(0.4000000059604645D, d0, d1, entity1); // Paper
if (!flag) {
this.indicateDamage(d0, d1);
}
@@ -1565,7 +1565,7 @@ 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());
+ target.knockback(0.5D, target.getX() - this.getX(), target.getZ() - this.getZ(), this); // Paper
}
private boolean checkTotemDeathProtection(DamageSource source) {
@@ -1826,6 +1826,11 @@ public abstract class LivingEntity extends Entity implements Attackable {
}
public void knockback(double strength, double x, double z) {
+ // Paper start - add knockbacking entity parameter
+ this.knockback(strength, x, z, null);
+ }
+ public void knockback(double strength, double x, double z, Entity knockingBackEntity) {
+ // Paper end - add knockbacking entity parameter
strength *= 1.0D - this.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE);
if (strength > 0.0D) {
this.hasImpulse = true;
@@ -1833,6 +1838,15 @@ public abstract class LivingEntity extends Entity implements Attackable {
Vec3 vec3d1 = (new Vec3(x, 0.0D, z)).normalize().scale(strength);
this.setDeltaMovement(vec3d.x / 2.0D - vec3d1.x, this.onGround() ? Math.min(0.4D, vec3d.y / 2.0D + strength) : vec3d.y, vec3d.z / 2.0D - vec3d1.z);
+ // Paper start - call EntityKnockbackByEntityEvent
+ Vec3 currentMovement = this.getDeltaMovement();
+ org.bukkit.util.Vector delta = new org.bukkit.util.Vector(currentMovement.x - vec3d.x, currentMovement.y - vec3d.y, currentMovement.z - vec3d.z);
+ // Restore old velocity to be able to access it in the event
+ this.setDeltaMovement(vec3d);
+ if (knockingBackEntity == null || new com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent((org.bukkit.entity.LivingEntity) getBukkitEntity(), knockingBackEntity.getBukkitEntity(), (float) strength, delta).callEvent()) {
+ this.setDeltaMovement(vec3d.x + delta.getX(), vec3d.y + delta.getY(), vec3d.z + delta.getZ());
+ }
+ // Paper end
}
}
diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index 645ee527b9e7e7edbf3320eae6e441bea84f58f9..2b5f5aed31bd235a213f57b9d65b0ea1fae8de08 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -1647,7 +1647,7 @@ public abstract class Mob extends LivingEntity implements Targeting {
if (flag) {
if (f1 > 0.0F && target instanceof LivingEntity) {
- ((LivingEntity) target).knockback((double) (f1 * 0.5F), (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)));
+ ((LivingEntity) target).knockback((double) (f1 * 0.5F), (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this); // Paper
this.setDeltaMovement(this.getDeltaMovement().multiply(0.6D, 1.0D, 0.6D));
}
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 e319a46a21a94314c5d496820b1ac4879dcf56b9..4a3bcd988cf63452c4277ad55ba604ad43c8a623 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
@@ -77,7 +77,7 @@ 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((double)(h * g) * this.getKnockbackForce.applyAsDouble(entity), this.ramDirection.x(), this.ramDirection.z(), entity); // Paper
this.finishRam(world, entity);
world.playSound((Player)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 29cfd065f246bbd3d3c2a5bbd32c3f4813a02951..03ec02f9a2fb5abb5387cd0d83c9481d6cbb0bd2 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
@@ -68,7 +68,7 @@ public class SonicBoom extends Behavior<Warden> {
target.hurt(world.damageSources().sonicBoom(entity), 10.0F);
double d = 0.5D * (1.0D - target.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE));
double e = 2.5D * (1.0D - 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
});
}
}
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 8bfb2f94226e6b623def141a7af79d0f46d7d445..fc0750f9b2257a3dbf0fab2f0cd4bb020e044752 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
@@ -458,7 +458,7 @@ 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
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/monster/Ravager.java b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
index 041f1650b853138e4286fe83a08d79d276054ce7..344e933311f5cdccb66069d486b111a003639dfe 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Ravager.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
@@ -265,7 +265,7 @@ 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
}
@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 81003ce3f05c6be6f52a92b86a4721235f4ce12a..004382377ee364143a34287e7b6546ae1df4e88e 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, 0.0D, h)).normalize().scale(j).yRot(i);
double k = f * (double)attacker.level().random.nextFloat() * 0.5D;
- target.push(vec3.x, k, vec3.z);
+ target.push(vec3.x, k, vec3.z, attacker); // Paper
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 799ebcf4c148d402039efc369fd4cda5354c5473..edc73a920f5c0f17e00fda48e64c26c96e71b11d 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -1290,9 +1290,9 @@ public abstract class Player extends LivingEntity {
if (flag5) {
if (i > 0) {
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)));
+ ((LivingEntity) target).knockback((double) ((float) i * 0.5F), (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this); // Paper
} 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
}
this.setDeltaMovement(this.getDeltaMovement().multiply(0.6D, 1.0D, 0.6D));
@@ -1314,7 +1314,7 @@ public abstract class Player extends LivingEntity {
if (entityliving != this && entityliving != target && !this.isAlliedTo((Entity) entityliving) && (!(entityliving instanceof ArmorStand) || !((ArmorStand) entityliving).isMarker()) && this.distanceToSqr((Entity) entityliving) < 9.0D) {
// CraftBukkit start - Only apply knockback if the damage hits
if (entityliving.hurt(this.damageSources().playerAttack(this).sweep(), f4)) {
- entityliving.knockback(0.4000000059604645D, (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)));
+ entityliving.knockback(0.4000000059604645D, (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this); // Pa
}
// CraftBukkit end
}
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 61a23f67c71116881bab9febf8db219a6c0b98a1..c5512adfb2d38616bb741d03038158c379020ecf 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
@@ -401,7 +401,7 @@ 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
}
}
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