Paper/CraftBukkit-Patches/0019-Fix-Mob-Spawning-Relative-to-View-Distance.patch

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From fc91a1144c3a77270d6a1a6ea8eaf61fc7120153 Mon Sep 17 00:00:00 2001
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From: md_5 <md_5@live.com.au>
Date: Fri, 21 Jun 2013 17:29:54 +1000
Subject: [PATCH] Fix Mob Spawning Relative to View Distance
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index 5b13dea..51db2db 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -33,6 +33,7 @@ public class Chunk {
public int p;
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public long q;
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private int u;
+ protected gnu.trove.map.hash.TObjectIntHashMap<Class> entityCount = new gnu.trove.map.hash.TObjectIntHashMap<Class>(); // Spigot
public Chunk(World world, int i, int j) {
this.sections = new ChunkSection[16];
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@@ -552,6 +553,15 @@ public class Chunk {
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entity.ak = k;
entity.al = this.z;
this.entitySlices[k].add(entity);
+ // Spigot start - increment creature type count
+ for ( EnumCreatureType creatureType : EnumCreatureType.values() )
+ {
+ if ( creatureType.a().isAssignableFrom( entity.getClass() ) )
+ {
+ this.entityCount.adjustOrPutValue( creatureType.a(), 1, 1 );
+ }
+ }
+ // Spigot end
}
public void b(Entity entity) {
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@@ -568,6 +578,15 @@ public class Chunk {
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}
this.entitySlices[i].remove(entity);
+ // Spigot start - decrement creature type count
+ for ( EnumCreatureType creatureType : EnumCreatureType.values() )
+ {
+ if ( creatureType.a().isAssignableFrom( entity.getClass() ) )
+ {
+ this.entityCount.adjustValue( creatureType.a(), -1 );
+ }
+ }
+ // Spigot end
}
public boolean d(int i, int j, int k) {
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
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index 9812538..ecf13aa 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
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@@ -27,6 +27,23 @@ public final class SpawnerCreature {
return new ChunkPosition(k, i1, l);
}
+ // Spigot start - get entity count only from chunks being processed in b
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+ private int getEntityCount(WorldServer server, Class oClass)
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+ {
+ int i = 0;
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+ for ( Long coord : this.a.keySet() )
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+ {
+ int x = LongHash.msw( coord );
+ int z = LongHash.lsw( coord );
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+ if ( !server.chunkProviderServer.unloadQueue.contains( coord ) && server.isChunkLoaded( x, z ) )
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+ {
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+ i += server.getChunkAt( x, z ).entityCount.get( oClass );
+ }
+ }
+ return i;
+ }
+ // Spigot end
+
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public int spawnEntities(WorldServer worldserver, boolean flag, boolean flag1, boolean flag2) {
if (!flag && !flag1) {
return 0;
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@@ -42,6 +59,11 @@ public final class SpawnerCreature {
j = MathHelper.floor(entityhuman.locZ / 16.0D);
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byte b0 = 8;
+ // Spigot Start
+ b0 = worldserver.spigotConfig.mobSpawnRange;
+ b0 = ( b0 > worldserver.spigotConfig.viewDistance ) ? (byte) worldserver.spigotConfig.viewDistance : b0;
+ b0 = ( b0 > 8 ) ? 8 : b0;
+ // Spigot End
for (int l = -b0; l <= b0; ++l) {
for (int i1 = -b0; i1 <= b0; ++i1) {
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@@ -89,13 +111,15 @@ public final class SpawnerCreature {
if (limit == 0) {
continue;
}
+ int mobcnt = 0;
// CraftBukkit end
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- if ((!enumcreaturetype.d() || flag1) && (enumcreaturetype.d() || flag) && (!enumcreaturetype.e() || flag2) && worldserver.a(enumcreaturetype.a()) <= limit * this.a.size() / 256) { // CraftBukkit - use per-world limits
+ if ((!enumcreaturetype.d() || flag1) && (enumcreaturetype.d() || flag) && (!enumcreaturetype.e() || flag2) && (mobcnt = getEntityCount(worldserver, enumcreaturetype.a())) <= limit * this.a.size() / 256) { // Spigot - use per-world limits and use all loaded chunks
Iterator iterator = this.a.keySet().iterator();
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+ int moblimit = (limit * this.a.size() / 256) - mobcnt + 1; // Spigot - up to 1 more than limit
label110:
- while (iterator.hasNext()) {
+ while (iterator.hasNext() && (moblimit > 0)) { // Spigot - while more allowed
// CraftBukkit start
long key = ((Long) iterator.next()).longValue();
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@@ -160,6 +184,13 @@ public final class SpawnerCreature {
groupdataentity = entityinsentient.a(groupdataentity);
worldserver.addEntity(entityinsentient, SpawnReason.NATURAL);
// CraftBukkit end
+ // Spigot start
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+ if ( --moblimit <= 0 )
+ {
+ // If we're past limit, stop spawn
+ continue label110;
+ }
+ // Spigot end
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if (j2 >= entityinsentient.bv()) {
continue label110;
}
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diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index f74fc9b..f0becc1 100644
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--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -154,4 +154,11 @@ public class SpigotWorldConfig
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antiXrayInstance = new AntiXray( this );
}
+
+ public byte mobSpawnRange;
+ private void mobSpawnRange()
+ {
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+ mobSpawnRange = (byte) getInt( "mob-spawn-range", 4 );
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+ log( "Mob Spawn Range: " + mobSpawnRange );
+ }
}
--
1.8.1.2