Paper/Spigot-Server-Patches/0228-Implement-EntityKnockbackByEntityEvent.patch
Riley Park 4e958e229f
We're going on an Adventure! (#4842)
Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
Co-authored-by: zml <zml@stellardrift.ca>
Co-authored-by: Mariell Hoversholm <proximyst@proximyst.com>
2021-02-21 20:45:33 +01:00

94 lines
6.1 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/server/EntityHuman.java b/src/main/java/net/minecraft/server/EntityHuman.java
index a3d9e81eb53aec369c102c1fcf42b50053b4c38e..111ec5443116cbeecc7c9ecee3a585895d8376ec 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -1078,7 +1078,7 @@ public abstract class EntityHuman extends EntityLiving {
if (flag5) {
if (i > 0) {
if (entity instanceof EntityLiving) {
- ((EntityLiving) entity).a((float) i * 0.5F, (double) MathHelper.sin(this.yaw * 0.017453292F), (double) (-MathHelper.cos(this.yaw * 0.017453292F)));
+ ((EntityLiving) entity).doKnockback((float) i * 0.5F, (double) MathHelper.sin(this.yaw * 0.017453292F), (double) (-MathHelper.cos(this.yaw * 0.017453292F)), this); // Paper
} else {
entity.i((double) (-MathHelper.sin(this.yaw * 0.017453292F) * (float) i * 0.5F), 0.1D, (double) (MathHelper.cos(this.yaw * 0.017453292F) * (float) i * 0.5F));
}
@@ -1102,7 +1102,7 @@ public abstract class EntityHuman extends EntityLiving {
if (entityliving != this && entityliving != entity && !this.r(entityliving) && (!(entityliving instanceof EntityArmorStand) || !((EntityArmorStand) entityliving).isMarker()) && this.h((Entity) entityliving) < 9.0D) {
// CraftBukkit start - Only apply knockback if the damage hits
if (entityliving.damageEntity(DamageSource.playerAttack(this).sweep(), f4)) {
- entityliving.a(0.4F, (double) MathHelper.sin(this.yaw * 0.017453292F), (double) (-MathHelper.cos(this.yaw * 0.017453292F)));
+ entityliving.doKnockback(0.4F, (double) MathHelper.sin(this.yaw * 0.017453292F), (double) (-MathHelper.cos(this.yaw * 0.017453292F)), this); // Paper
}
// CraftBukkit end
}
diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java
index 6274cf1975270fdac8ae4986e1c170bd075d640e..fbecc8ccab47b428c43530ad344e325538cf242d 100644
--- a/src/main/java/net/minecraft/server/EntityInsentient.java
+++ b/src/main/java/net/minecraft/server/EntityInsentient.java
@@ -1500,7 +1500,7 @@ public abstract class EntityInsentient extends EntityLiving {
if (flag) {
if (f1 > 0.0F && entity instanceof EntityLiving) {
- ((EntityLiving) entity).a(f1 * 0.5F, (double) MathHelper.sin(this.yaw * 0.017453292F), (double) (-MathHelper.cos(this.yaw * 0.017453292F)));
+ ((EntityLiving) entity).doKnockback(f1 * 0.5F, (double) MathHelper.sin(this.yaw * 0.017453292F), (double) (-MathHelper.cos(this.yaw * 0.017453292F)), this); // Paper
this.setMot(this.getMot().d(0.6D, 1.0D, 0.6D));
}
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index f8c9c4e41faed2a76ca6ff4105351b09c2193cdd..014f27ab7c183e3b416e96d6bbbbfc776e54ca84 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -1246,7 +1246,7 @@ public abstract class EntityLiving extends Entity {
}
this.ap = (float) (MathHelper.d(d1, d0) * 57.2957763671875D - (double) this.yaw);
- this.a(0.4F, d0, d1);
+ this.doKnockback(0.4F, d0, d1, entity1); // Paper
} else {
this.ap = (float) ((int) (Math.random() * 2.0D) * 180);
}
@@ -1294,7 +1294,7 @@ public abstract class EntityLiving extends Entity {
}
protected void e(EntityLiving entityliving) {
- entityliving.a(0.5F, entityliving.locX() - this.locX(), entityliving.locZ() - this.locZ());
+ entityliving.doKnockback(0.5F, entityliving.locX() - this.locX(), entityliving.locZ() - this.locZ(), this); // Paper
}
private boolean f(DamageSource damagesource) {
@@ -1537,6 +1537,11 @@ public abstract class EntityLiving extends Entity {
}
public void a(float f, double d0, double d1) {
+ // Paper start - add knockbacking entity parameter
+ this.doKnockback(f, d0, d1, null);
+ }
+ public void doKnockback(float f, double d0, double d1, Entity knockingBackEntity) {
+ // Paper end - add knockbacking entity parameter
f = (float) ((double) f * (1.0D - this.b(GenericAttributes.KNOCKBACK_RESISTANCE)));
if (f > 0.0F) {
this.impulse = true;
@@ -1544,6 +1549,16 @@ public abstract class EntityLiving extends Entity {
Vec3D vec3d1 = (new Vec3D(d0, 0.0D, d1)).d().a((double) f);
this.setMot(vec3d.x / 2.0D - vec3d1.x, this.onGround ? Math.min(0.4D, vec3d.y / 2.0D + (double) f) : vec3d.y, vec3d.z / 2.0D - vec3d1.z);
+
+ // Paper start - call EntityKnockbackByEntityEvent
+ Vec3D currentMot = this.getMot();
+ org.bukkit.util.Vector delta = new org.bukkit.util.Vector(currentMot.x - vec3d.x, currentMot.y - vec3d.y, currentMot.z - vec3d.z);
+ // Restore old velocity to be able to access it in the event
+ this.setMot(vec3d);
+ if (knockingBackEntity == null || new com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent((LivingEntity) getBukkitEntity(), knockingBackEntity.getBukkitEntity(), f, delta).callEvent()) {
+ this.setMot(vec3d.x + delta.getX(), vec3d.y + delta.getY(), vec3d.z + delta.getZ());
+ }
+ // Paper end
}
}