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Add a separate PreSpawnerSpawnEvent (#1455)

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This event extends the PreCreatureSpawnEvent and includes the position
of the spawner that spawned the entitiy. (similarly to how the
SpawnerSpawnEvent contains the spawner's BlockState).

This one doesn't include the state though as getting the block and
generating that snapshot is a bit wasteful.
This commit is contained in:
Max Lee 2018-09-19 01:34:11 +02:00
parent 94dc83b4cf
commit 06cbabf778
2 changed files with 74 additions and 0 deletions
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44
Spigot-API-Patches/PreSpawnerSpawnEvent.patch Normal file
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@ -0,0 +1,44 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Phoenix616 <mail@moep.tv>
Date: Tue, 18 Sep 2018 23:50:10 +0100
Subject: [PATCH] PreSpawnerSpawnEvent
This adds a separate event before an entity is spawned by a spawner
which contains the location of the spawner too similarly to how the
SpawnerSpawnEvent gets called instead of the CreatureSpawnEvent for
spawners.
diff --git a/src/main/java/com/destroystokyo/paper/event/entity/PreSpawnerSpawnEvent.java b/src/main/java/com/destroystokyo/paper/event/entity/PreSpawnerSpawnEvent.java
new file mode 100644
index 00000000..d7221210
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/entity/PreSpawnerSpawnEvent.java
@@ -0,0 +0,0 @@
+package com.destroystokyo.paper.event.entity;
+
+
+import com.google.common.base.Preconditions;
+import org.bukkit.Location;
+import org.bukkit.entity.EntityType;
+import org.bukkit.event.entity.CreatureSpawnEvent;
+
+/**
+ * Called before an entity is spawned into a world by a spawner.
+ *
+ * This only includes the spawner's location and not the full BlockState snapshot for performance reasons.
+ * If you really need it you have to get the spawner yourself.
+ */
+
+public class PreSpawnerSpawnEvent extends PreCreatureSpawnEvent {
+ private final Location spawnerLocation;
+
+ public PreSpawnerSpawnEvent(Location location, EntityType type, Location spawnerLocation) {
+ super(location, type, CreatureSpawnEvent.SpawnReason.SPAWNER);
+ this.spawnerLocation = Preconditions.checkNotNull(spawnerLocation, "Spawner location may not be null");
+ }
+
+ public Location getSpawnerLocation() {
+ return spawnerLocation;
+ }
+}
--

30
Spigot-Server-Patches/PreSpawnerSpawnEvent.patch Normal file
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Phoenix616 <mail@moep.tv>
Date: Tue, 18 Sep 2018 23:53:23 +0100
Subject: [PATCH] PreSpawnerSpawnEvent
This adds a separate event before an entity is spawned by a spawner
which contains the location of the spawner too similarly to how the
SpawnerSpawnEvent gets called instead of the CreatureSpawnEvent for
spawners.
diff --git a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
index 79600cd7..81d07606 100644
--- a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
@@ -0,0 +0,0 @@ public abstract class MobSpawnerAbstract {
String key = this.getMobName().getKey();
org.bukkit.entity.EntityType type = org.bukkit.entity.EntityType.fromName(key);
if (type != null) {
- com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent event;
- event = new com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent(
+ com.destroystokyo.paper.event.entity.PreSpawnerSpawnEvent event;
+ event = new com.destroystokyo.paper.event.entity.PreSpawnerSpawnEvent(
MCUtil.toLocation(world, d3, d4, d5),
type,
- org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER
+ MCUtil.toLocation(world, blockposition)
);
if (!event.callEvent()) {
flag = true;
--