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1.13: EnderDragon Events (#1247)

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Replaces PR #1185 for 1.13

Add some new cancellable enderdragon events dealing with its fireball shooting and the areaeffectcloud it spawns. Based on [talking with someone with a specific use-case](https://www.spigotmc.org/threads/cancel-projectilehitevent.326466/) this was [confirmed to work](http://i.imgur.com/ezlfpKC.png) for them in PM.
This commit is contained in:
BillyGalbreath 2018-07-28 01:03:10 -05:00 committed by Daniel Ennis
parent 1b53a468de
commit fa9224721e
2 changed files with 269 additions and 0 deletions
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209
Spigot-API-Patches/0125-EnderDragon-Events.patch Normal file
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@ -0,0 +1,209 @@
From f43d349299401f7db1e573918c8d2ca82d4ac422 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Sat, 21 Jul 2018 01:51:05 -0500
Subject: [PATCH] EnderDragon Events
diff --git a/src/main/java/com/destroystokyo/paper/event/entity/EnderDragonFireballHitEvent.java b/src/main/java/com/destroystokyo/paper/event/entity/EnderDragonFireballHitEvent.java
new file mode 100644
index 00000000..2ac57af3
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/entity/EnderDragonFireballHitEvent.java
@@ -0,0 +1,70 @@
+package com.destroystokyo.paper.event.entity;
+
+import org.bukkit.entity.AreaEffectCloud;
+import org.bukkit.entity.DragonFireball;
+import org.bukkit.entity.LivingEntity;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.entity.EntityEvent;
+
+import java.util.Collection;
+
+/**
+ * Fired when a DragonFireball collides with a block/entity and spawns an AreaEffectCloud
+ */
+public class EnderDragonFireballHitEvent extends EntityEvent implements Cancellable {
+ private final Collection<LivingEntity> targets;
+ private final AreaEffectCloud areaEffectCloud;
+
+ public EnderDragonFireballHitEvent(DragonFireball fireball, Collection<LivingEntity> targets, AreaEffectCloud areaEffectCloud) {
+ super(fireball);
+ this.targets = targets;
+ this.areaEffectCloud = areaEffectCloud;
+ }
+
+ /**
+ * The fireball involved in this event
+ */
+ @Override
+ public DragonFireball getEntity() {
+ return (DragonFireball) super.getEntity();
+ }
+
+ /**
+ * The living entities hit by fireball
+ * <p></p>
+ * May be null if no entities were hit
+ */
+ public Collection<LivingEntity> getTargets() {
+ return targets;
+ }
+
+ /**
+ * The area effect cloud spawned in this collision
+ */
+ public AreaEffectCloud getAreaEffectCloud() {
+ return areaEffectCloud;
+ }
+
+ private static final HandlerList handlers = new HandlerList();
+
+ public HandlerList getHandlers() {
+ return handlers;
+ }
+
+ public static HandlerList getHandlerList() {
+ return handlers;
+ }
+
+ private boolean cancelled = false;
+
+ @Override
+ public boolean isCancelled() {
+ return cancelled;
+ }
+
+ @Override
+ public void setCancelled(boolean cancel) {
+ cancelled = cancel;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/event/entity/EnderDragonFlameEvent.java b/src/main/java/com/destroystokyo/paper/event/entity/EnderDragonFlameEvent.java
new file mode 100644
index 00000000..59f87633
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/entity/EnderDragonFlameEvent.java
@@ -0,0 +1,56 @@
+package com.destroystokyo.paper.event.entity;
+
+import org.bukkit.entity.AreaEffectCloud;
+import org.bukkit.entity.EnderDragon;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.entity.EntityEvent;
+
+/**
+ * Fired when an EnderDragon spawns an AreaEffectCloud by shooting flames
+ */
+public class EnderDragonFlameEvent extends EntityEvent implements Cancellable {
+ private final AreaEffectCloud areaEffectCloud;
+
+ public EnderDragonFlameEvent(EnderDragon enderDragon, AreaEffectCloud areaEffectCloud) {
+ super(enderDragon);
+ this.areaEffectCloud = areaEffectCloud;
+ }
+
+ /**
+ * The enderdragon involved in this event
+ */
+ @Override
+ public EnderDragon getEntity() {
+ return (EnderDragon) super.getEntity();
+ }
+
+ /**
+ * The area effect cloud spawned in this collision
+ */
+ public AreaEffectCloud getAreaEffectCloud() {
+ return areaEffectCloud;
+ }
+
+ private static final HandlerList handlers = new HandlerList();
+
+ public HandlerList getHandlers() {
+ return handlers;
+ }
+
+ public static HandlerList getHandlerList() {
+ return handlers;
+ }
+
+ private boolean cancelled = false;
+
+ @Override
+ public boolean isCancelled() {
+ return cancelled;
+ }
+
+ @Override
+ public void setCancelled(boolean cancel) {
+ cancelled = cancel;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/event/entity/EnderDragonShootFireballEvent.java b/src/main/java/com/destroystokyo/paper/event/entity/EnderDragonShootFireballEvent.java
new file mode 100644
index 00000000..296ae244
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/entity/EnderDragonShootFireballEvent.java
@@ -0,0 +1,56 @@
+package com.destroystokyo.paper.event.entity;
+
+import org.bukkit.entity.DragonFireball;
+import org.bukkit.entity.EnderDragon;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.entity.EntityEvent;
+
+/**
+ * Fired when an EnderDragon shoots a fireball
+ */
+public class EnderDragonShootFireballEvent extends EntityEvent implements Cancellable {
+ private final DragonFireball fireball;
+
+ public EnderDragonShootFireballEvent(EnderDragon entity, DragonFireball fireball) {
+ super(entity);
+ this.fireball = fireball;
+ }
+
+ /**
+ * The enderdragon shooting the fireball
+ */
+ @Override
+ public EnderDragon getEntity() {
+ return (EnderDragon) super.getEntity();
+ }
+
+ /**
+ * The fireball being shot
+ */
+ public DragonFireball getFireball() {
+ return fireball;
+ }
+
+ private static final HandlerList handlers = new HandlerList();
+
+ public HandlerList getHandlers() {
+ return handlers;
+ }
+
+ public static HandlerList getHandlerList() {
+ return handlers;
+ }
+
+ private boolean cancelled = false;
+
+ @Override
+ public boolean isCancelled() {
+ return cancelled;
+ }
+
+ @Override
+ public void setCancelled(boolean cancel) {
+ cancelled = cancel;
+ }
+}
--
2.11.0

60
Spigot-Server-Patches/0299-EnderDragon-Events.patch Normal file
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@ -0,0 +1,60 @@
From a10cdd4797b779ff0853512f98b6e89cc1b1385d Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Sat, 21 Jul 2018 01:51:27 -0500
Subject: [PATCH] EnderDragon Events
diff --git a/src/main/java/net/minecraft/server/DragonControllerLandedFlame.java b/src/main/java/net/minecraft/server/DragonControllerLandedFlame.java
index b78d3fe50..ef8b0e765 100644
--- a/src/main/java/net/minecraft/server/DragonControllerLandedFlame.java
+++ b/src/main/java/net/minecraft/server/DragonControllerLandedFlame.java
@@ -63,7 +63,9 @@ public class DragonControllerLandedFlame extends AbstractDragonControllerLanded
this.d.setDuration(200);
this.d.setParticle(Particles.j);
this.d.a(new MobEffect(MobEffects.HARM));
+ if (new com.destroystokyo.paper.event.entity.EnderDragonFlameEvent((org.bukkit.entity.EnderDragon) this.a.getBukkitEntity(), (org.bukkit.entity.AreaEffectCloud) this.d.getBukkitEntity()).callEvent()) // Paper
this.a.world.addEntity(this.d);
+ else this.removeAreaEffect(); // Paper
}
}
@@ -73,6 +75,7 @@ public class DragonControllerLandedFlame extends AbstractDragonControllerLanded
++this.c;
}
+ public void removeAreaEffect() { this.e(); } // Paper - OBFHELPER
public void e() {
if (this.d != null) {
this.d.die();
diff --git a/src/main/java/net/minecraft/server/DragonControllerStrafe.java b/src/main/java/net/minecraft/server/DragonControllerStrafe.java
index 9c158fd58..b4887d658 100644
--- a/src/main/java/net/minecraft/server/DragonControllerStrafe.java
+++ b/src/main/java/net/minecraft/server/DragonControllerStrafe.java
@@ -67,7 +67,9 @@ public class DragonControllerStrafe extends AbstractDragonController {
EntityDragonFireball entitydragonfireball = new EntityDragonFireball(this.a.world, this.a, d9, d10, d11);
entitydragonfireball.setPositionRotation(d6, d7, d8, 0.0F, 0.0F);
+ if (new com.destroystokyo.paper.event.entity.EnderDragonShootFireballEvent((org.bukkit.entity.EnderDragon) a.getBukkitEntity(), (org.bukkit.entity.DragonFireball) entitydragonfireball.getBukkitEntity()).callEvent()) // Paper
this.a.world.addEntity(entitydragonfireball);
+ else entitydragonfireball.die(); // Paper
this.c = 0;
if (this.d != null) {
while (!this.d.b()) {
diff --git a/src/main/java/net/minecraft/server/EntityDragonFireball.java b/src/main/java/net/minecraft/server/EntityDragonFireball.java
index 862ffc954..2b55cc68b 100644
--- a/src/main/java/net/minecraft/server/EntityDragonFireball.java
+++ b/src/main/java/net/minecraft/server/EntityDragonFireball.java
@@ -39,8 +39,10 @@ public class EntityDragonFireball extends EntityFireball {
}
}
+ if (new com.destroystokyo.paper.event.entity.EnderDragonFireballHitEvent((org.bukkit.entity.DragonFireball) this.getBukkitEntity(), list, (org.bukkit.entity.AreaEffectCloud) entityareaeffectcloud.getBukkitEntity()).callEvent()) { // Paper
this.world.triggerEffect(2006, new BlockPosition(this.locX, this.locY, this.locZ), 0);
this.world.addEntity(entityareaeffectcloud);
+ } else entityareaeffectcloud.die(); // Paper
this.die();
}
--
2.11.0