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Check for missing EntityType for PreCreatureSpawnEvent - Resolves #973
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@aikar
aikar committed Jan 16, 2018
1 parent d502311 commit 2f0e48c
Showing 1 changed file with 37 additions and 26 deletions.
63 changes: 37 additions & 26 deletions Spigot-Server-Patches/0262-PreCreatureSpawnEvent.patch
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@@ -1,4 +1,4 @@
From b27bbefc11af081a7e8e7e5212b964c8fc814777 Mon Sep 17 00:00:00 2001
From db5414cc10e2023fb1c49a256c053773e672b478 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 14 Jan 2018 17:01:31 -0500
Subject: [PATCH] PreCreatureSpawnEvent
Expand All @@ -15,7 +15,7 @@ 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 c29df55fa..d6c73a5a0 100644
index c29df55fa..3c591e67e 100644
--- a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
@@ -1,6 +1,7 @@
Expand All @@ -26,52 +26,63 @@ index c29df55fa..d6c73a5a0 100644
import java.util.Iterator;
import java.util.List;
import javax.annotation.Nullable;
@@ -87,6 +88,23 @@ public abstract class MobSpawnerAbstract {
@@ -87,6 +88,29 @@ public abstract class MobSpawnerAbstract {
double d3 = j >= 1 ? nbttaglist.f(0) : (double) blockposition.getX() + (world.random.nextDouble() - world.random.nextDouble()) * (double) this.spawnRange + 0.5D;
double d4 = j >= 2 ? nbttaglist.f(1) : (double) (blockposition.getY() + world.random.nextInt(3) - 1);
double d5 = j >= 3 ? nbttaglist.f(2) : (double) blockposition.getZ() + (world.random.nextDouble() - world.random.nextDouble()) * (double) this.spawnRange + 0.5D;
+ // Paper start
+ if (this.getMobName() == null) {
+ return;
+ }
+ com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent event;
+ event = new com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent(
+ MCUtil.toLocation(world, d3, d4, d5),
+ org.bukkit.entity.EntityType.fromName(this.getMobName().getKey()),
+ org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER
+ );
+ if (!event.callEvent()) {
+ if (event.shouldAbortSpawn()) {
+ break;
+ 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()) {
+ if (event.shouldAbortSpawn()) {
+ break;
+ }
+ continue;
+ }
+ continue;
+ } else {
+ MinecraftServer.LOGGER.warn("Warning, could not find EntityType for " + key + " - Please report this to Paper at https://github.com/PaperMC/Paper/issues");
+ }
+ // 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 2cd063829..1137dda86 100644
index 2cd063829..f64de94fa 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -184,6 +184,22 @@ public final class SpawnerCreature {
@@ -184,6 +184,27 @@ public final class SpawnerCreature {
}

if (worldserver.a(enumcreaturetype, biomebase_biomemeta, (BlockPosition) blockposition_mutableblockposition) && a(EntityPositionTypes.a(biomebase_biomemeta.b), worldserver, blockposition_mutableblockposition)) {
+ // Paper start
+ com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent event;
+ event = new com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent(
+ MCUtil.toLocation(worldserver, blockposition_mutableblockposition),
+ EntityTypes.clsToTypeMap.get(biomebase_biomemeta.b),
+ SpawnReason.NATURAL
+ );
+ if (!event.callEvent()) {
+ if (event.shouldAbortSpawn()) {
+ continue label120;
+ Class<? 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 label120;
+ }
+ j1 += l2;
+ ++j4;
+ continue;
+ }
+ j1 += l2;
+ ++j4;
+ continue;
+ } else {
+ MinecraftServer.LOGGER.warn("Warning, could not find EntityType for " + cls.getName() + " contains: " + (EntityTypes.clsToTypeMap.containsKey(cls) ? "yes" : "no") + " - Please report this to Paper at https://github.com/PaperMC/Paper/issues");
+ }
+ // Paper end
EntityInsentient entityinsentient;
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