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/world/entity/EntityInsentient.java b/src/main/java/net/minecraft/world/entity/EntityInsentient.java index c22b5f8fcdd4aa7dac242f634ef73edcd8745fc6..41566398f5eee6cf93376f2e2200728bb6d2181c 100644 --- a/src/main/java/net/minecraft/world/entity/EntityInsentient.java +++ b/src/main/java/net/minecraft/world/entity/EntityInsentient.java @@ -1568,7 +1568,7 @@ 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/world/entity/EntityLiving.java b/src/main/java/net/minecraft/world/entity/EntityLiving.java index d4ffff5ecb24af8439e5bfaa02e8136a10fdde90..4798eac1498ebeecf0476a61a093d3871c00d5a5 100644 --- a/src/main/java/net/minecraft/world/entity/EntityLiving.java +++ b/src/main/java/net/minecraft/world/entity/EntityLiving.java @@ -1339,7 +1339,7 @@ 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); } @@ -1387,7 +1387,7 @@ 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) { @@ -1630,6 +1630,11 @@ 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; @@ -1637,6 +1642,16 @@ 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 } } diff --git a/src/main/java/net/minecraft/world/entity/player/EntityHuman.java b/src/main/java/net/minecraft/world/entity/player/EntityHuman.java index 408732c59ed817c056671a78e43a734b048a818e..3c49d7acd4ad0717886adf6c469e8a49a58e859b 100644 --- a/src/main/java/net/minecraft/world/entity/player/EntityHuman.java +++ b/src/main/java/net/minecraft/world/entity/player/EntityHuman.java @@ -1177,7 +1177,7 @@ 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)); } @@ -1201,7 +1201,7 @@ 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 }