Paper/Spigot-Server-Patches/0197-PreCreatureSpawnEvent.patch
Shane Freeder 73983e4c16
Updated Upstream (Bukkit/CraftBukkit/Spigot)
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
3dc4cdcd Update to Minecraft 1.14.3-pre4
88b25a8c SPIGOT-5098: Add a method to allow colored sign changes
6d913552 Update to Minecraft 1.14.3-pre4

CraftBukkit Changes:
f1f33559 Update to Minecraft 1.14.3
8a3d3f49 SPIGOT-5098: Add a method to allow colored sign changes
533290e2 SPIGOT-5100: Console warning from pig zombie targeting
6dde4b9f SPIGOT-5094: Allow opening merchant for wandering traders and hide the xp bar for custom merchants
9af90077 SPIGOT-5097: Bukkit.clearRecipes() no longer working
38fa220f Fix setting game rules via the API
fe3930ce Update to Minecraft 1.14.3-pre4
da071ec5 Remove outdated build delay.

Spigot Changes:
4d2f30f1 Update to Minecraft 1.14.3
f16400e3 Update to Minecraft 1.14.3-pre4
2019-06-25 03:46:54 +01:00

92 lines
5.5 KiB
Diff

From 5ec4e4eb79464575a464f37d17f6c282708019d9 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 59bd9ccd70..6f5d8b0315 100644
--- a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
@@ -104,6 +104,28 @@ public abstract class MobSpawnerAbstract {
double d5 = j >= 3 ? nbttaglist.h(2) : (double) blockposition.getZ() + (world.random.nextDouble() - world.random.nextDouble()) * (double) this.spawnRange + 0.5D;
if (world.c(((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();
+
+ 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 = EntityTypes.a(nbttagcompound, world, (entity1) -> {
entity1.setPositionRotation(d3, d4, d5, entity1.yaw, entity1.pitch);
return entity1;
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index 4aa65c1934..4458b48ee8 100644
--- 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) {
@@ -74,6 +74,25 @@ public final class SpawnerCreature {
if (a(entitypositiontypes_surface, (IWorldReader) world, (BlockPosition) blockposition_mutableblockposition, entitytypes) && EntityPositionTypes.a(entitytypes, world, EnumMobSpawn.NATURAL, blockposition_mutableblockposition, world.random) && world.c(entitytypes.a((double) f, (double) k, (double) f1))) {
EntityInsentient entityinsentient;
+ // 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());
+ if (type != null) {
+ event = new com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent(
+ MCUtil.toLocation(world, blockposition_mutableblockposition),
+ type, SpawnReason.NATURAL
+ );
+ if (!event.callEvent()) {
+ if (event.shouldAbortSpawn()) {
+ return;
+ }
+ ++i2;
+ continue;
+ }
+ }
+ // Paper end
+
try {
Entity entity = entitytypes.a(world);
--
2.22.0