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Paper/CraftBukkit-Patches/0013-Fix-Mob-Spawning-Relat...

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From 008dfe5d5d4c87964fc09c34e6ffd46f66d33f09 Mon Sep 17 00:00:00 2001
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
Changes the mob spawning algorithm to properly account for view distance and the range around players.
Needs better documentation.
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 7519bfa..c3059b6 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -42,6 +42,7 @@ public class Chunk {
private long u;
private int v;
private ConcurrentLinkedQueue w;
+ protected gnu.trove.map.hash.TObjectIntHashMap<Class> entityCount = new gnu.trove.map.hash.TObjectIntHashMap<Class>(); // Spigot
// CraftBukkit start - Neighbor loaded cache for chunk lighting and entity ticking
private int neighbors = 0x1 << 12;
@@ -662,6 +663,22 @@ public class Chunk {
entity.af = k;
entity.ag = this.locZ;
this.entitySlices[k].add(entity);
+ // Spigot start - increment creature type count
+ // Keep this synced up with World.a(Class)
+ if (entity instanceof EntityInsentient) {
+ EntityInsentient entityinsentient = (EntityInsentient) entity;
+ if (entityinsentient.isTypeNotPersistent() && entityinsentient.isPersistent()) {
+ return;
+ }
+ }
+ 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) {
@@ -678,6 +695,22 @@ public class Chunk {
}
this.entitySlices[i].remove(entity);
+ // Spigot start - decrement creature type count
+ // Keep this synced up with World.a(Class)
+ if (entity instanceof EntityInsentient) {
+ EntityInsentient entityinsentient = (EntityInsentient) entity;
+ if (entityinsentient.isTypeNotPersistent() && entityinsentient.isPersistent()) {
+ return;
+ }
+ }
+ for ( EnumCreatureType creatureType : EnumCreatureType.values() )
+ {
+ if ( creatureType.a().isAssignableFrom( entity.getClass() ) )
+ {
+ this.entityCount.adjustValue( creatureType.a(), -1 );
+ }
+ }
+ // Spigot end
}
public boolean d(BlockPosition blockposition) {
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index 25988d4..43954b3 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -19,6 +19,25 @@ public final class SpawnerCreature {
public SpawnerCreature() {}
+ // Spigot start - get entity count only from chunks being processed in b
+ private int getEntityCount(WorldServer server, Class oClass)
+ {
+ int i = 0;
+ Iterator<Long> it = this.b.iterator();
+ while ( it.hasNext() )
+ {
+ Long coord = it.next();
+ int x = LongHash.msw( coord );
+ int z = LongHash.lsw( coord );
+ if ( !server.chunkProviderServer.unloadQueue.contains( coord ) && server.isChunkLoaded( x, z, true ) )
+ {
+ i += server.getChunkAt( x, z ).entityCount.get( oClass );
+ }
+ }
+ return i;
+ }
+ // Spigot end
+
public int a(WorldServer worldserver, boolean flag, boolean flag1, boolean flag2) {
if (!flag && !flag1) {
return 0;
@@ -38,6 +57,11 @@ public final class SpawnerCreature {
j = MathHelper.floor(entityhuman.locZ / 16.0D);
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 i1 = -b0; i1 <= b0; ++i1) {
for (k = -b0; k <= b0; ++k) {
@@ -88,17 +112,19 @@ public final class SpawnerCreature {
if (limit == 0) {
continue;
}
+ int mobcnt = 0; // Spigot
// CraftBukkit end
if ((!enumcreaturetype.d() || flag1) && (enumcreaturetype.d() || flag) && (!enumcreaturetype.e() || flag2)) {
k = worldserver.a(enumcreaturetype.a());
int l1 = limit * i / a; // CraftBukkit - use per-world limits
- if (k <= l1) {
+ if ((mobcnt = getEntityCount(worldserver, enumcreaturetype.a())) <= limit * i / 256) {
Iterator iterator1 = this.b.iterator();
+ int moblimit = (limit * i / 256) - mobcnt + 1; // Spigot - up to 1 more than limit
label115:
- while (iterator1.hasNext()) {
+ while (iterator1.hasNext() && (moblimit > 0)) { // Spigot - while more allowed
// CraftBukkit start = use LongHash and LongObjectHashMap
long key = ((Long) iterator1.next()).longValue();
BlockPosition blockposition1 = getRandomPosition(worldserver, LongHash.msw(key), LongHash.lsw(key));
@@ -156,6 +182,13 @@ public final class SpawnerCreature {
worldserver.addEntity(entityinsentient, SpawnReason.NATURAL); // CraftBukkit - Added a reason for spawning this creature
}
+ // Spigot start
+ if ( --moblimit <= 0 )
+ {
+ // If we're past limit, stop spawn
+ continue label115;
+ }
+ // Spigot end
if (l2 >= entityinsentient.bU()) {
continue label115;
}
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index 6cc3a91..46249d7 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -131,4 +131,11 @@ public class SpigotWorldConfig
viewDistance = getInt( "view-distance", Bukkit.getViewDistance() );
log( "View Distance: " + viewDistance );
}
+
+ public byte mobSpawnRange;
+ private void mobSpawnRange()
+ {
+ mobSpawnRange = (byte) getInt( "mob-spawn-range", 4 );
+ log( "Mob Spawn Range: " + mobSpawnRange );
+ }
}
--
2.1.0
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