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Paper/patches/server/0212-Implement-EntityKnockbackByEntityEvent-and-EntityPus.patch
Jake Potrebic fbf74ba0ac
Updated Upstream (CraftBukkit) (#9053) 
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

CraftBukkit Changes:
f92c94517 SPIGOT-7310: PlayerToggleSneakEvent is not called when a player sneaks while riding an entity
b5714184d SPIGOT-7316: Cancelling EntityUnmountEvent does not stop the all effects of the unmounting
e237f8c88 SPIGOT-7312: Entity#setVisibleByDefault on player causes skin reset on this player client
2023-03-26 13:29:41 -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 fbceeb5db8601d58cd449e80e423c1eeaedbcaab..213304a9ad145a2fecead78b82f441ae12825e4e 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1774,8 +1774,17 @@ 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 cd0ae977eff36db8a2010596698835dcd9166ef9..10c6f6ac0c56eedf40190216e44d3f5d47b63deb 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1445,7 +1445,7 @@ 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);
}
@@ -1494,7 +1494,7 @@ 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) {
@@ -1750,6 +1750,11 @@ 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;
@@ -1757,6 +1762,15 @@ 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 6f1755efd7f1cf9dd65d070a3ba7623333f341bc..984a33d5e1f790a9c78ba57f2dc21fb072a44b3d 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -1631,7 +1631,7 @@ 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 18a9050158f71245d5d88f9c0833fd5d4e5fdca6..55a8ab31a26a16adbe78b3b34366dc81851c02d4 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
@@ -434,7 +434,7 @@ 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 f4aa2be477da34c37660f0f3d7997928d327545d..24dc43c7806e99be6dc37af48ec056a5edd19947 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Ravager.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
@@ -274,7 +274,7 @@ 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 f8ccf0cf421bf2d8d6d6ccf8dd9e7c27eb9024ed..de73183166962d84b3fcbb408e011bc9e8486374 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 457cafaa39907e85e1d1e9028f0eb75a90f3eb8e..2961e08fc315a0d5f3b95de9d127948da07e66c8 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -1283,9 +1283,9 @@ 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));
@@ -1307,7 +1307,7 @@ 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 aabb5ad09dd7b11a7dfbaa0849726541c0401951..01ccd4f90ad8aed84a89630cf6df9f7ba9bc3fec 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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