From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Brokkonaut 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 a1cfa610eb3cc368b9641feeab709a4f5985ffbe..08141147f9795546e9397abed95834ed5e69a126 100644 --- a/src/main/java/net/minecraft/server/EntityHuman.java +++ b/src/main/java/net/minecraft/server/EntityHuman.java @@ -1085,7 +1085,7 @@ 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.h((double) (-MathHelper.sin(this.yaw * 0.017453292F) * (float) i * 0.5F), 0.1D, (double) (MathHelper.cos(this.yaw * 0.017453292F) * (float) i * 0.5F)); } @@ -1109,7 +1109,7 @@ 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); } // CraftBukkit end } diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java index a6aa7a1a8da787604b2d8f3f9ea119d4b6bc188d..bb831658d91ffa7d78cd8597509e61f3f14b0890 100644 --- a/src/main/java/net/minecraft/server/EntityInsentient.java +++ b/src/main/java/net/minecraft/server/EntityInsentient.java @@ -1474,7 +1474,7 @@ 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); 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 2fcae52461794f51d1ec0e3ca4817da026d3ae24..c549eda057b58b985bef98fabeaa642280cff1c3 100644 --- a/src/main/java/net/minecraft/server/EntityLiving.java +++ b/src/main/java/net/minecraft/server/EntityLiving.java @@ -1239,7 +1239,7 @@ public abstract class EntityLiving extends Entity { } this.aw = (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.aw = (float) ((int) (Math.random() * 2.0D) * 180); } @@ -1287,7 +1287,7 @@ public abstract class EntityLiving extends Entity { } protected void f(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); } private boolean f(DamageSource damagesource) { @@ -1522,6 +1522,11 @@ 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; @@ -1529,6 +1534,16 @@ 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 } }