Paper/Spigot-Server-Patches/0191-PreCreatureSpawnEvent.patch

91 lines
5.7 KiB
Diff
Raw Normal View History

From ae58ae6165d9295d062541494b29fcc8e70c95ec Mon Sep 17 00:00:00 2001
2019-04-28 19:59:47 +02:00
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 258e96ba5..fe8bc7f75 100644
2019-04-28 19:59:47 +02:00
--- a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
2019-12-12 00:43:22 +01:00
@@ -105,6 +105,27 @@ public abstract class MobSpawnerAbstract {
2019-04-28 19:59:47 +02:00
double d5 = j >= 3 ? nbttaglist.h(2) : (double) blockposition.getZ() + (world.random.nextDouble() - world.random.nextDouble()) * (double) this.spawnRange + 0.5D;
2019-12-12 00:43:22 +01:00
if (world.a(((EntityTypes) optional.get()).a(d3, d4, d5)) && EntityPositionTypes.a((EntityTypes) optional.get(), world.getMinecraftWorld(), EnumMobSpawn.SPAWNER, new BlockPosition(d3, d4, d5), world.getRandom())) {
+ // Paper start
+ EntityTypes entityType = optional.get();
+ String key = EntityTypes.getName(entityType).getKey();
+
2019-12-12 00:43:22 +01:00
+ 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;
2019-04-28 19:59:47 +02:00
+ }
+ }
2019-12-12 00:43:22 +01:00
+ // Paper end
2019-04-28 19:59:47 +02:00
Entity entity = EntityTypes.a(nbttagcompound, world, (entity1) -> {
entity1.setPositionRotation(d3, d4, d5, entity1.yaw, entity1.pitch);
return entity1;
2019-04-28 19:59:47 +02:00
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index 02157d051..224443e03 100644
2019-04-28 19:59:47 +02:00
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -38,7 +38,7 @@ public final class SpawnerCreature {
BiomeBase.BiomeMeta biomebase_biomemeta = null;
GroupDataEntity groupdataentity = null;
int l1 = MathHelper.f(Math.random() * 4.0D);
- int i2 = 0;
+ int i2 = 0; // Paper - force diff on name change
int j2 = 0;
while (true) {
2019-07-20 06:01:24 +02:00
@@ -77,6 +77,25 @@ public final class SpawnerCreature {
2019-12-12 00:43:22 +01:00
if (a(entitypositiontypes_surface, (IWorldReader) worldserver, (BlockPosition) blockposition_mutableblockposition, entitytypes) && EntityPositionTypes.a(entitytypes, worldserver, EnumMobSpawn.NATURAL, blockposition_mutableblockposition, worldserver.random) && worldserver.a(entitytypes.a((double) f, (double) k, (double) f1))) {
2019-07-20 06:01:24 +02:00
EntityInsentient entityinsentient;
2019-04-28 19:59:47 +02:00
+ // Paper start
+ com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent event;
+ EntityTypes<?> cls = biomebase_biomemeta.b;
+ org.bukkit.entity.EntityType type = org.bukkit.entity.EntityType.fromName(EntityTypes.getName(cls).getKey());
2019-04-28 19:59:47 +02:00
+ if (type != null) {
+ event = new com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent(
2019-12-12 19:45:00 +01:00
+ MCUtil.toLocation(worldserver, blockposition_mutableblockposition),
2019-04-28 19:59:47 +02:00
+ type, SpawnReason.NATURAL
+ );
+ if (!event.callEvent()) {
+ if (event.shouldAbortSpawn()) {
+ return;
+ }
+ ++i2;
+ continue;
+ }
+ }
+ // Paper end
+
2019-07-20 06:01:24 +02:00
try {
2019-12-12 00:43:22 +01:00
Entity entity = entitytypes.a((World) worldserver);
2019-04-28 19:59:47 +02:00
--
2.25.0.windows.1
2019-04-28 19:59:47 +02:00