SteamWar/Paper
10
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix knockback events (#10831)

Browse Source 
* fix knockback events

* squash

* handle cancelled event for explosions
This commit is contained in:
Jake Potrebic
2024-05-30 13:17:16 -07:00
parent ef45b03497
commit ea9c42406e
4 changed files with 417 additions and 224 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
patches/server/Add-critical-damage-API.patch
View File

@@ -55,7 +55,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
// CraftBukkit start - Only apply knockback if the damage hits
- if (entityliving.hurt(this.damageSources().playerAttack(this).sweep(), f4)) {
+ if (entityliving.hurt(this.damageSources().playerAttack(this).sweep().critical(flag2), f4)) { // Paper - add critical damage API
entityliving.knockback(0.4000000059604645D, (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, EntityKnockbackEvent.KnockbackCause.SWEEP_ATTACK); // CraftBukkit
entityliving.knockback(0.4000000059604645D, (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.SWEEP_ATTACK); // CraftBukkit // Paper - knockback events
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java

166
patches/server/Add-EntityKnockbackByEntityEvent-and-EntityPushedByE.patch → patches/server/Add-entity-knockback-events.patch
View File

@@ -1,12 +1,14 @@
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] Add EntityKnockbackByEntityEvent and
EntityPushedByEntityAttackEvent
Subject: [PATCH] Add entity knockback events
- EntityKnockbackEvent
- EntityPushedByEntityAttackEvent
- EntityKnockbackByEntityEvent
Co-authored-by: aerulion <aerulion@gmail.com>
This event is called when an entity receives knockback by another entity.
Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
@@ -26,64 +28,84 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+ public void push(double deltaX, double deltaY, double deltaZ, @org.jetbrains.annotations.Nullable Entity pushingEntity) {
+ org.bukkit.util.Vector delta = new org.bukkit.util.Vector(deltaX, deltaY, deltaZ);
+ if (pushingEntity != null) {
+ io.papermc.paper.event.entity.EntityPushedByEntityAttackEvent event = new io.papermc.paper.event.entity.EntityPushedByEntityAttackEvent(getBukkitEntity(), pushingEntity.getBukkitEntity(), delta);
+ io.papermc.paper.event.entity.EntityPushedByEntityAttackEvent event = new io.papermc.paper.event.entity.EntityPushedByEntityAttackEvent(this.getBukkitEntity(), io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.PUSH, pushingEntity.getBukkitEntity(), delta);
+ if (!event.callEvent()) {
+ return;
+ }
+ delta = event.getAcceleration();
+ delta = event.getKnockback();
+ }
+ this.setDeltaMovement(this.getDeltaMovement().add(delta.getX(), delta.getY(), delta.getZ()));
this.hasImpulse = true;
+ // Paper end - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
this.hasImpulse = true;
}
protected void markHurt() {
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -0,0 +0,0 @@ public abstract class LivingEntity extends Entity implements Attackable {
d0 = (Math.random() - Math.random()) * 0.01D;
}
- this.knockback(0.4000000059604645D, d0, d1, entity1, entity1 == null ? EntityKnockbackEvent.KnockbackCause.DAMAGE : EntityKnockbackEvent.KnockbackCause.ENTITY_ATTACK); // CraftBukkit
+ this.knockback(0.4000000059604645D, d0, d1, entity1, entity1 == null ? io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.DAMAGE : io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.ENTITY_ATTACK); // CraftBukkit // Paper - knockback events
if (!flag) {
this.indicateDamage(d0, d1);
}
@@ -0,0 +0,0 @@ public abstract class LivingEntity extends Entity implements Attackable {
}
protected void blockedByShield(LivingEntity target) {
- target.knockback(0.5D, target.getX() - this.getX(), target.getZ() - this.getZ(), null, EntityKnockbackEvent.KnockbackCause.SHIELD_BLOCK); // CraftBukkit
+ target.knockback(0.5D, target.getX() - this.getX(), target.getZ() - this.getZ(), this, EntityKnockbackEvent.KnockbackCause.SHIELD_BLOCK); // CraftBukkit // Paper - fix attacker
+ target.knockback(0.5D, target.getX() - this.getX(), target.getZ() - this.getZ(), this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.SHIELD_BLOCK); // CraftBukkit // Paper - fix attacker & knockback events
}
private boolean checkTotemDeathProtection(DamageSource source) {
@@ -0,0 +0,0 @@ public abstract class LivingEntity extends Entity implements Attackable {
this.knockback(strength, x, z, null, EntityKnockbackEvent.KnockbackCause.UNKNOWN);
public void knockback(double strength, double x, double z) {
// CraftBukkit start - EntityKnockbackEvent
- this.knockback(strength, x, z, null, EntityKnockbackEvent.KnockbackCause.UNKNOWN);
+ this.knockback(strength, x, z, null, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.UNKNOWN); // Paper - knockback events
}
- public void knockback(double d0, double d1, double d2, Entity attacker, EntityKnockbackEvent.KnockbackCause cause) {
+ public void knockback(double d0, double d1, double d2, @Nullable Entity attacker, EntityKnockbackEvent.KnockbackCause cause) { // Paper - add nullable to attacker param
+ public void knockback(double d0, double d1, double d2, @Nullable Entity attacker, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause cause) { // Paper - knockback events
d0 *= 1.0D - this.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE);
if (true || d0 > 0.0D) { // CraftBukkit - Call event even when force is 0
//this.hasImpulse = true; // CraftBukkit - Move down
@@ -0,0 +0,0 @@ public abstract class LivingEntity extends Entity implements Attackable {
Vec3 vec3d = this.getDeltaMovement();
Vec3 vec3d1 = (new Vec3(d1, 0.0D, d2)).normalize().scale(d0);
- EntityKnockbackEvent event = CraftEventFactory.callEntityKnockbackEvent((org.bukkit.craftbukkit.entity.CraftLivingEntity) this.getBukkitEntity(), attacker, cause, d0, vec3d1, vec3d.x / 2.0D - vec3d1.x, this.onGround() ? Math.min(0.4D, vec3d.y / 2.0D + d0) : vec3d.y, vec3d.z / 2.0D - vec3d1.z);
+ // Paper start - knockback events
+ Vec3 finalVelocity = new Vec3(vec3d.x / 2.0D - vec3d1.x, this.onGround() ? Math.min(0.4D, vec3d.y / 2.0D + d0) : vec3d.y, vec3d.z / 2.0D - vec3d1.z);
+ Vec3 diff = finalVelocity.subtract(vec3d);
+ io.papermc.paper.event.entity.EntityKnockbackEvent event = CraftEventFactory.callEntityKnockbackEvent((org.bukkit.craftbukkit.entity.CraftLivingEntity) this.getBukkitEntity(), attacker, cause, d0, diff);
+ // Paper end - knockback events
if (event.isCancelled()) {
return;
}
+ // Paper start - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
+ final org.bukkit.util.Vector currentMovement = this.getBukkitEntity().getVelocity();
+ org.bukkit.util.Vector resultingMovement = event.getFinalKnockback();
+ final org.bukkit.util.Vector deltaMovement = resultingMovement.clone().subtract(currentMovement);
+ if (attacker != null) {
+ final com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent knockbackEvent = new com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent(this.getBukkitLivingEntity(), attacker.getBukkitEntity(), (float) event.getForce(), deltaMovement);
+ if (!knockbackEvent.callEvent()) {
+ return;
+ }
+
+ // Back from delta to the absolute vector
+ resultingMovement = currentMovement.add(knockbackEvent.getAcceleration());
+ }
this.hasImpulse = true;
- this.setDeltaMovement(event.getFinalKnockback().getX(), event.getFinalKnockback().getY(), event.getFinalKnockback().getZ());
+ this.setDeltaMovement(resultingMovement.getX(), resultingMovement.getY(), resultingMovement.getZ());
+ // Paper end - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
+ this.setDeltaMovement(vec3d.add(event.getKnockback().getX(), event.getKnockback().getY(), event.getKnockback().getZ())); // Paper - knockback events
// CraftBukkit end
}
}
diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -0,0 +0,0 @@ public abstract class Mob extends LivingEntity implements EquipmentUser, Targeti
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, this, org.bukkit.event.entity.EntityKnockbackEvent.KnockbackCause.ENTITY_ATTACK); // CraftBukkit
+ ((LivingEntity) target).knockback((double) (f1 * 0.5F), (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot())) * 0.017453292F, this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.ENTITY_ATTACK); // CraftBukkit // Paper - knockback events
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 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/ai/behavior/RamTarget.java
@@ -93,7 +115,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
float g = Mth.clamp(entity.getSpeed() * 1.65F, 0.2F, 3.0F) + f;
float h = livingEntity.isDamageSourceBlocked(world.damageSources().mobAttack(entity)) ? 0.5F : 1.0F;
- livingEntity.knockback((double)(h * g) * this.getKnockbackForce.applyAsDouble(entity), this.ramDirection.x(), this.ramDirection.z());
+ livingEntity.knockback(h * g * this.getKnockbackForce.applyAsDouble(entity), this.ramDirection.x(), this.ramDirection.z(), entity, org.bukkit.event.entity.EntityKnockbackEvent.KnockbackCause.ENTITY_ATTACK); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
+ livingEntity.knockback(h * g * this.getKnockbackForce.applyAsDouble(entity), this.ramDirection.x(), this.ramDirection.z(), entity, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.ENTITY_ATTACK); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
this.finishRam(world, entity);
world.playSound(null, entity, this.getImpactSound.apply(entity), SoundSource.NEUTRAL, 1.0F, 1.0F);
} else if (this.hasRammedHornBreakingBlock(world, entity)) {
@@ -183,14 +205,26 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -0,0 +0,0 @@ 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)), this, EntityKnockbackEvent.KnockbackCause.ENTITY_ATTACK); // CraftBukkit
- ((LivingEntity) target).knockback((double) ((float) i * 0.5F), (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, EntityKnockbackEvent.KnockbackCause.ENTITY_ATTACK); // CraftBukkit
+ ((LivingEntity) target).knockback((double) ((float) i * 0.5F), (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.ENTITY_ATTACK); // CraftBukkit // Paper - knockback events
} 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));
+ 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), this); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
}
this.setDeltaMovement(this.getDeltaMovement().multiply(0.6D, 1.0D, 0.6D));
@@ -0,0 +0,0 @@ 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(this.damageSources().playerAttack(this).sweep(), f4)) {
- entityliving.knockback(0.4000000059604645D, (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, EntityKnockbackEvent.KnockbackCause.SWEEP_ATTACK); // CraftBukkit
+ entityliving.knockback(0.4000000059604645D, (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.SWEEP_ATTACK); // CraftBukkit // Paper - knockback events
}
// CraftBukkit end
}
diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
@@ -200,7 +234,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
if (vec3d.lengthSqr() > 0.0D) {
- entityliving.push(vec3d.x, 0.1D, vec3d.z);
+ entityliving.push(vec3d.x, 0.1D, vec3d.z, this); // Paper
+ entityliving.push(vec3d.x, 0.1D, vec3d.z, this); // Paper - pass causing entity for knockback events
}
}
@@ -222,19 +256,65 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
--- a/src/main/java/net/minecraft/world/level/Explosion.java
+++ b/src/main/java/net/minecraft/world/level/Explosion.java
@@ -0,0 +0,0 @@ public class Explosion {
// since the code below (the setDeltaMovement call as well as the hitPlayers map)
// want the vector to be the relative velocity will the event provides the absolute velocity
vec3d1 = (event.isCancelled()) ? Vec3.ZERO : new Vec3(event.getFinalKnockback().getX(), event.getFinalKnockback().getY(), event.getFinalKnockback().getZ()).subtract(entity.getDeltaMovement());
+ // Paper start - call EntityKnockbackByEntityEvent for explosions
+ if (this.damageSource.getEntity() != null || this.source != null) {
+ final org.bukkit.entity.Entity hitBy = this.damageSource.getEntity() != null ? this.damageSource.getEntity().getBukkitEntity() : this.source.getBukkitEntity();
+ com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent paperEvent = new com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent(((LivingEntity) entity).getBukkitLivingEntity(), hitBy, (float) event.getForce(), org.bukkit.craftbukkit.util.CraftVector.toBukkit(vec3d1));
+ if (!paperEvent.callEvent()) {
+ continue;
+ }
+ vec3d1 = org.bukkit.craftbukkit.util.CraftVector.toNMS(paperEvent.getAcceleration());
+ }
+ // Paper end - call EntityKnockbackByEntityEvent for explosions
// CraftBukkit start - Call EntityKnockbackEvent
if (entity instanceof LivingEntity) {
- Vec3 result = entity.getDeltaMovement().add(vec3d1);
- org.bukkit.event.entity.EntityKnockbackEvent event = CraftEventFactory.callEntityKnockbackEvent((org.bukkit.craftbukkit.entity.CraftLivingEntity) entity.getBukkitEntity(), this.source, org.bukkit.event.entity.EntityKnockbackEvent.KnockbackCause.EXPLOSION, d13, vec3d1, result.x, result.y, result.z);
-
- // SPIGOT-7640: Need to subtract entity movement from the event result,
- // since the code below (the setDeltaMovement call as well as the hitPlayers map)
- // want the vector to be the relative velocity will the event provides the absolute velocity
- vec3d1 = (event.isCancelled()) ? Vec3.ZERO : new Vec3(event.getFinalKnockback().getX(), event.getFinalKnockback().getY(), event.getFinalKnockback().getZ()).subtract(entity.getDeltaMovement());
+ // Paper start - knockback events
+ io.papermc.paper.event.entity.EntityKnockbackEvent event = CraftEventFactory.callEntityKnockbackEvent((org.bukkit.craftbukkit.entity.CraftLivingEntity) entity.getBukkitEntity(), this.damageSource.getEntity() != null ? this.damageSource.getEntity() : this.source, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.EXPLOSION, d13, vec3d1);
+ vec3d1 = event.isCancelled() ? Vec3.ZERO : org.bukkit.craftbukkit.util.CraftVector.toNMS(event.getKnockback());
+ // Paper end - knockback events
}
// CraftBukkit end
entity.setDeltaMovement(entity.getDeltaMovement().add(vec3d1));
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -0,0 +0,0 @@ public class CraftEventFactory {
return event;
}
- public static EntityKnockbackEvent callEntityKnockbackEvent(CraftLivingEntity entity, Entity attacker, EntityKnockbackEvent.KnockbackCause cause, double force, Vec3 raw, double x, double y, double z) {
- Vector bukkitRaw = new Vector(-raw.x, raw.y, -raw.z); // Due to how the knockback calculation works, we need to invert x and z.
-
- EntityKnockbackEvent event;
+ // Paper start - replace knockback events
+ public static io.papermc.paper.event.entity.EntityKnockbackEvent callEntityKnockbackEvent(CraftLivingEntity entity, Entity attacker, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause cause, double force, Vec3 knockback) {
+ Vector apiKnockback = CraftVector.toBukkit(knockback);
+
+ final Vector currentVelocity = entity.getVelocity();
+ final Vector legacyFinalKnockback = currentVelocity.clone().add(apiKnockback);
+ final org.bukkit.event.entity.EntityKnockbackEvent.KnockbackCause legacyCause = org.bukkit.event.entity.EntityKnockbackEvent.KnockbackCause.valueOf(cause.name());
+ EntityKnockbackEvent legacyEvent;
if (attacker != null) {
- event = new EntityKnockbackByEntityEvent(entity, attacker.getBukkitEntity(), cause, force, new Vector(-raw.x, raw.y, -raw.z), new Vector(x, y, z));
+ legacyEvent = new EntityKnockbackByEntityEvent(entity, attacker.getBukkitEntity(), legacyCause, force, apiKnockback, legacyFinalKnockback);
} else {
- event = new EntityKnockbackEvent(entity, cause, force, new Vector(-raw.x, raw.y, -raw.z), new Vector(x, y, z));
+ legacyEvent = new EntityKnockbackEvent(entity, legacyCause, force, apiKnockback, legacyFinalKnockback);
}
+ legacyEvent.callEvent();
- Bukkit.getPluginManager().callEvent(event);
+ final io.papermc.paper.event.entity.EntityKnockbackEvent event;
+ apiKnockback = legacyEvent.getFinalKnockback().subtract(currentVelocity);
+ if (attacker != null) {
+ event = new com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent(entity, attacker.getBukkitEntity(), cause, (float) force, apiKnockback);
+ } else {
+ event = new io.papermc.paper.event.entity.EntityKnockbackEvent(entity, cause, apiKnockback);
+ }
+ event.setCancelled(legacyEvent.isCancelled());
+ event.callEvent();
return event;
}
+ // Paper end - replace knockback events
public static void callEntityRemoveEvent(Entity entity, EntityRemoveEvent.Cause cause) {
if (entity instanceof ServerPlayer) {