papermc/Spigot-Server-Patches/0230-PreCreatureSpawnEvent.patch
Aikar 05466e3b47
[Auto] Update Upstream
Upstream has released updates that appear to apply compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing.

Bukkit Changes:
d2834556 SPIGOT-4219: Event for PigZombies angering.

CraftBukkit Changes:
a9c796f1 SPIGOT-4184: Fix furnaces not matching Vanilla smelt or animations
195f071e SPIGOT-4219: Event for PigZombies angering.
5e3082c7 SPIGOT-4230: Improve legacy block types
2018-08-05 19:46:43 -04:00

96 lines
5.9 KiB
Diff

From 99a4cccfb5bafd478e1aa01bfce9d15fc60045fb Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 14 Jan 2018 17:01:31 -0500
Subject: [PATCH] PreCreatureSpawnEvent
Adds an event to fire before an Entity is created, so that plugins that need to cancel
CreatureSpawnEvent can do so from this event instead.
Cancelling CreatureSpawnEvent rapidly causes a lot of garbage collection and CPU waste
as it's done after the Entity object has been fully created.
Mob Limiting plugins and blanket "ban this type of monster" plugins should use this event
instead and save a lot of server resources.
See: https://github.com/PaperMC/Paper/issues/917
diff --git a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
index c76dbe74ac..d10196fcbd 100644
--- a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
@@ -1,6 +1,7 @@
package net.minecraft.server;
import com.google.common.collect.Lists;
+
import java.util.Iterator;
import java.util.List;
import javax.annotation.Nullable;
@@ -94,6 +95,28 @@ public abstract class MobSpawnerAbstract {
double d3 = j >= 1 ? nbttaglist.k(0) : (double) blockposition.getX() + (world.random.nextDouble() - world.random.nextDouble()) * (double) this.spawnRange + 0.5D;
double d4 = j >= 2 ? nbttaglist.k(1) : (double) (blockposition.getY() + world.random.nextInt(3) - 1);
double d5 = j >= 3 ? nbttaglist.k(2) : (double) blockposition.getZ() + (world.random.nextDouble() - world.random.nextDouble()) * (double) this.spawnRange + 0.5D;
+ // Paper start
+ if (this.getMobName() == null) {
+ return;
+ }
+ 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(
+ MCUtil.toLocation(world, d3, d4, d5),
+ type,
+ org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER
+ );
+ if (!event.callEvent()) {
+ flag = true;
+ if (event.shouldAbortSpawn()) {
+ break;
+ }
+ continue;
+ }
+ }
+ // Paper end
Entity entity = ChunkRegionLoader.a(nbttagcompound, world, d3, d4, d5, false);
if (entity == null) {
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index 342a15db5e..973c3d1e9e 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -160,10 +160,30 @@ public final class SpawnerCreature {
if (worldserver.a(enumcreaturetype, biomebase_biomemeta, (BlockPosition) blockposition_mutableblockposition)) {
EntityPositionTypes.Surface entitypositiontypes_surface = EntityPositionTypes.a(biomebase_biomemeta.b);
-
if (entitypositiontypes_surface != null && a(entitypositiontypes_surface, worldserver, blockposition_mutableblockposition, biomebase_biomemeta.b)) {
EntityInsentient entityinsentient;
+ // Paper start
+ com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent event;
+ EntityTypes<? extends EntityInsentient> cls = biomebase_biomemeta.b;
+ org.bukkit.entity.EntityType type = EntityTypes.clsToTypeMap.get(cls);
+ if (type != null) {
+ event = new com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent(
+ MCUtil.toLocation(worldserver, blockposition_mutableblockposition),
+ type, SpawnReason.NATURAL
+ );
+ if (!event.callEvent()) {
+ if (event.shouldAbortSpawn()) {
+ continue label128; // right above the iterator for c (Chunk Pos Set)
+ }
+ j1 += l2;
+ ++j4;
+ continue;
+ }
+ }
+ // Paper end
+
+
try {
entityinsentient = (EntityInsentient) biomebase_biomemeta.b.a((World) worldserver);
} catch (Exception exception) {
--
2.18.0