From c2d0e15e8095c773c163ea2a5f62ae6dcb8d56c5 Mon Sep 17 00:00:00 2001
From: Jedediah Smith <jedediah@silencegreys.com>
Date: Tue, 1 Mar 2016 14:47:52 -0600
Subject: [PATCH] Player affects spawning API


diff --git a/src/main/java/net/minecraft/server/EntityHuman.java b/src/main/java/net/minecraft/server/EntityHuman.java
index 4308269d4..70d5a69f8 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -68,6 +68,9 @@ public abstract class EntityHuman extends EntityLiving {
     private final ItemCooldown ce;
     @Nullable
     public EntityFishingHook hookedFish;
+    // Paper start
+    public boolean affectsSpawning = true;
+    // Paper end
 
     // CraftBukkit start
     public boolean fauxSleeping;
diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java
index 42a073d70..4809af8f0 100644
--- a/src/main/java/net/minecraft/server/EntityInsentient.java
+++ b/src/main/java/net/minecraft/server/EntityInsentient.java
@@ -620,7 +620,7 @@ public abstract class EntityInsentient extends EntityLiving {
         } else {
             EntityHuman entityhuman = this.world.findNearbyPlayer(this, -1.0D);
 
-            if (entityhuman != null) {
+            if (entityhuman != null && entityhuman.affectsSpawning) { // Paper - Affects Spawning API
                 double d0 = entityhuman.locX - this.locX;
                 double d1 = entityhuman.locY - this.locY;
                 double d2 = entityhuman.locZ - this.locZ;
diff --git a/src/main/java/net/minecraft/server/EntitySilverfish.java b/src/main/java/net/minecraft/server/EntitySilverfish.java
index 3c566ebd0..ba40e03fc 100644
--- a/src/main/java/net/minecraft/server/EntitySilverfish.java
+++ b/src/main/java/net/minecraft/server/EntitySilverfish.java
@@ -96,7 +96,7 @@ public class EntitySilverfish extends EntityMonster {
         if (super.a(generatoraccess, flag)) {
             EntityHuman entityhuman = generatoraccess.b(this, 5.0D);
 
-            return entityhuman == null;
+            return !(entityhuman != null && !entityhuman.affectsSpawning) && entityhuman == null; // Paper - Affects Spawning API
         } else {
             return false;
         }
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index 6ca0e19cb..4eaa5d93b 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -37,7 +37,7 @@ public final class SpawnerCreature {
             while (iterator.hasNext()) {
                 EntityHuman entityhuman = (EntityHuman) iterator.next();
 
-                if (!entityhuman.isSpectator()) {
+                if (!entityhuman.isSpectator() && entityhuman.affectsSpawning) { // Paper
                     int l = MathHelper.floor(entityhuman.locX / 16.0D);
 
                     j = MathHelper.floor(entityhuman.locZ / 16.0D);
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index ed227d8e8..dab1be9b6 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -30,6 +30,7 @@ import org.bukkit.craftbukkit.CraftWorld;
 import org.bukkit.craftbukkit.block.CraftBlockState;
 import org.bukkit.craftbukkit.block.data.CraftBlockData;
 import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.craftbukkit.util.LongHashSet; // Paper
 import org.bukkit.event.block.BlockPhysicsEvent;
 import org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason;
 import org.bukkit.generator.ChunkGenerator;
@@ -2384,7 +2385,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
         for (int i = 0; i < this.players.size(); ++i) {
             EntityHuman entityhuman = (EntityHuman) this.players.get(i);
 
-            if (IEntitySelector.f.test(entityhuman)) {
+            if (IEntitySelector.f.test(entityhuman) && entityhuman.affectsSpawning) { // Paper - Affects Spawning API
                 double d4 = entityhuman.d(d0, d1, d2);
 
                 if (d3 < 0.0D || d4 < d3 * d3) {
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 7993581c2..4a30435a0 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1639,7 +1639,19 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     @Override
     public String getLocale() {
         return getHandle().locale;
+
+    }
+
+    // Paper start
+    public void setAffectsSpawning(boolean affects) {
+        this.getHandle().affectsSpawning = affects;
+    }
+
+    @Override
+    public boolean getAffectsSpawning() {
+        return this.getHandle().affectsSpawning;
     }
+    // Paper end
 
     @Override
     public void updateCommands() {
-- 
2.20.1