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 af2e81137d9c686f8d94a1d0d7241619fa1f352c..04489a915d11ba970a5188a5a913432ab4ef9faa 100644 --- a/src/main/java/net/minecraft/world/entity/LivingEntity.java +++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java @@ -1336,7 +1336,7 @@ public abstract class LivingEntity extends Entity { } this.hurtDir = (float) (Mth.atan2(d1, d0) * 57.2957763671875D - (double) this.yRot); - this.knockback(0.4F, d0, d1); + this.doKnockback(0.4F, d0, d1, entity1); // Paper } else { this.hurtDir = (float) ((int) (Math.random() * 2.0D) * 180); } @@ -1384,7 +1384,7 @@ public abstract class LivingEntity extends Entity { } protected void blockedByShield(LivingEntity target) { - target.knockback(0.5F, target.getX() - this.getX(), target.getZ() - this.getZ()); + target.doKnockback(0.5F, target.getX() - this.getX(), target.getZ() - this.getZ(), this); // Paper } private boolean checkTotemDeathProtection(DamageSource source) { @@ -1627,6 +1627,11 @@ public abstract class LivingEntity extends Entity { } public void knockback(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.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE))); if (f > 0.0F) { this.hasImpulse = true; @@ -1634,6 +1639,16 @@ public abstract class LivingEntity extends Entity { Vec3 vec3d1 = (new Vec3(d0, 0.0D, d1)).normalize().scale((double) f); this.setDeltaMovement(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 + Vec3 currentMot = this.getDeltaMovement(); + 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.setDeltaMovement(vec3d); + if (knockingBackEntity == null || new com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent((org.bukkit.entity.LivingEntity) getBukkitEntity(), knockingBackEntity.getBukkitEntity(), f, 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 eb35c69bb777ba8d83b2304ff9f862512643e745..f3690ea49cf90c816b8b3554b47d6f2d9dfbe016 100644 --- a/src/main/java/net/minecraft/world/entity/Mob.java +++ b/src/main/java/net/minecraft/world/entity/Mob.java @@ -1566,7 +1566,7 @@ public abstract class Mob extends LivingEntity { if (flag) { if (f1 > 0.0F && target instanceof LivingEntity) { - ((LivingEntity) target).knockback(f1 * 0.5F, (double) Mth.sin(this.yRot * 0.017453292F), (double) (-Mth.cos(this.yRot * 0.017453292F))); + ((LivingEntity) target).doKnockback(f1 * 0.5F, (double) Mth.sin(this.yRot * 0.017453292F), (double) (-Mth.cos(this.yRot * 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/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java index b88d8f2c377322290002e84e217f3f2f6e4e71e8..5e6a86b0b8999a5c47d2f9bdd9857ab5f0772033 100644 --- a/src/main/java/net/minecraft/world/entity/player/Player.java +++ b/src/main/java/net/minecraft/world/entity/player/Player.java @@ -1174,7 +1174,7 @@ public abstract class Player extends LivingEntity { if (flag5) { if (i > 0) { if (target instanceof LivingEntity) { - ((LivingEntity) target).knockback((float) i * 0.5F, (double) Mth.sin(this.yRot * 0.017453292F), (double) (-Mth.cos(this.yRot * 0.017453292F))); + ((LivingEntity) target).doKnockback((float) i * 0.5F, (double) Mth.sin(this.yRot * 0.017453292F), (double) (-Mth.cos(this.yRot * 0.017453292F)), this); // Paper } else { target.push((double) (-Mth.sin(this.yRot * 0.017453292F) * (float) i * 0.5F), 0.1D, (double) (Mth.cos(this.yRot * 0.017453292F) * (float) i * 0.5F)); } @@ -1198,7 +1198,7 @@ public abstract class Player extends LivingEntity { if (entityliving != this && entityliving != target && !this.isAlliedTo(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(0.4F, (double) Mth.sin(this.yRot * 0.017453292F), (double) (-Mth.cos(this.yRot * 0.017453292F))); + entityliving.doKnockback(0.4F, (double) Mth.sin(this.yRot * 0.017453292F), (double) (-Mth.cos(this.yRot * 0.017453292F)), this); // Paper } // CraftBukkit end }