PaperMC/patches/server/0209-Implement-EntityKnockbackByEntityEvent.patch
2022-06-07 20:12:24 -07:00

105 lines
7.5 KiB
Diff

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
This event is called when an entity receives knockback by another entity.
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 51f7f1ee4242fc6bd8ff57c76052e1e75232bc34..eb9d45fd330ad4ed194ed593ca15ed579ddb2c54 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1456,7 +1456,7 @@ public abstract class LivingEntity extends Entity {
}
this.hurtDir = (float) (Mth.atan2(d1, d0) * 57.2957763671875D - (double) this.getYRot());
- this.knockback(0.4000000059604645D, d0, d1);
+ this.knockback(0.4000000059604645D, d0, d1, entity1);
} else {
this.hurtDir = (float) ((int) (Math.random() * 2.0D) * 180);
}
@@ -1504,7 +1504,7 @@ public abstract class LivingEntity extends Entity {
}
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);
}
private boolean checkTotemDeathProtection(DamageSource source) {
@@ -1757,6 +1757,11 @@ public abstract class LivingEntity extends Entity {
}
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;
@@ -1764,6 +1769,15 @@ public abstract class LivingEntity extends Entity {
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 932f54d8a6db9455d9fd947baad0de7850ccd563..2bec7466fcd61731d4da1cefdea8c375def0be12 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -1573,7 +1573,7 @@ public abstract class Mob extends LivingEntity {
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 3380b95e0eff5a6b1b683b8233b8991eb817b638..de8485df1c23e903ff0721fdb682b98d580b634e 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
@@ -78,7 +78,7 @@ public class RamTarget extends Behavior<Goat> {
float f = 0.25F * (float)(i - j);
float g = Mth.clamp(goat.getSpeed() * 1.65F, 0.2F, 3.0F) + f;
float h = livingEntity.isDamageSourceBlocked(DamageSource.mobAttack(goat)) ? 0.5F : 1.0F;
- livingEntity.knockback((double)(h * g) * this.getKnockbackForce.applyAsDouble(goat), this.ramDirection.x(), this.ramDirection.z());
+ livingEntity.knockback((double)(h * g) * this.getKnockbackForce.applyAsDouble(goat), this.ramDirection.x(), this.ramDirection.z(), goat); // Paper
this.finishRam(serverLevel, goat);
serverLevel.playSound((Player)null, goat, this.getImpactSound.apply(goat), SoundSource.HOSTILE, 1.0F, 1.0F);
} else if (this.hasRammedHornBreakingBlock(serverLevel, goat)) {
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 0183d170f4a776eb0424adca6c57b37e96975db8..11e7443bfdd178f23b08529d6c90988113b4ea5e 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -1298,7 +1298,7 @@ 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));
}
@@ -1322,7 +1322,7 @@ 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(DamageSource.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); // Paper
}
// CraftBukkit end
}