From 5a9cd9b156b4026dc6a13940c4be7c0af56f06cf Mon Sep 17 00:00:00 2001
From: Jedediah Smith <jedediah@silencegreys.com>
Date: Sun, 21 Sep 2014 22:02:02 -0500
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 35b5cfb10..114f40652 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -42,6 +42,7 @@ public abstract class EntityHuman extends EntityLiving implements ICommandListen
     public boolean sleeping; // protected -> public
     public boolean fauxSleeping;
     public String spawnWorld = "";
+    public boolean affectsSpawning = true; // PaperSpigot
 
     @Override
     public CraftHumanEntity getBukkitEntity() {
diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java
index 2d35a8d90..cbef9b604 100644
--- a/src/main/java/net/minecraft/server/EntityInsentient.java
+++ b/src/main/java/net/minecraft/server/EntityInsentient.java
@@ -379,7 +379,7 @@ public abstract class EntityInsentient extends EntityLiving {
         if (this.persistent) {
             this.aU = 0;
         } else {
-            EntityHuman entityhuman = this.world.findNearbyPlayer(this, -1.0D);
+            EntityHuman entityhuman = this.world.findNearbyPlayerWhoAffectsSpawning(this, -1.0D); // PaperSpigot
 
             if (entityhuman != null) {
                 double d0 = entityhuman.locX - this.locX;
diff --git a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
index 227690598..26fa93e86 100644
--- a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
@@ -46,7 +46,7 @@ public abstract class MobSpawnerAbstract {
     }
 
     public boolean f() {
-        return this.a().findNearbyPlayer((double) this.b() + 0.5D, (double) this.c() + 0.5D, (double) this.d() + 0.5D, (double) this.requiredPlayerRange) != null;
+        return this.a().findNearbyPlayerWhoAffectsSpawning((double) this.b() + 0.5D, (double) this.c() + 0.5D, (double) this.d() + 0.5D, (double) this.requiredPlayerRange) != null; // PaperSpigot
     }
 
     public void g() {
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index 75427b586..7b30362fd 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -55,6 +55,10 @@ public final class SpawnerCreature {
 
             for (i = 0; i < worldserver.players.size(); ++i) {
                 EntityHuman entityhuman = (EntityHuman) worldserver.players.get(i);
+                // PaperSpigot start - Affects spawning API
+                if (!entityhuman.affectsSpawning)
+                    continue;
+                // PaperSpigot end
                 int k = MathHelper.floor(entityhuman.locX / 16.0D);
 
                 j = MathHelper.floor(entityhuman.locZ / 16.0D);
@@ -154,7 +158,7 @@ public final class SpawnerCreature {
                                                     float f1 = (float) i3;
                                                     float f2 = (float) j3 + 0.5F;
 
-                                                    if (worldserver.findNearbyPlayer((double) f, (double) f1, (double) f2, 24.0D) == null) {
+                                                    if (worldserver.findNearbyPlayerWhoAffectsSpawning((double) f, (double) f1, (double) f2, 24.0D) == null) { // PaperSpigot
                                                         float f3 = f - (float) chunkcoordinates.x;
                                                         float f4 = f1 - (float) chunkcoordinates.y;
                                                         float f5 = f2 - (float) chunkcoordinates.z;
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index fb09d7ef1..f7c47d881 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -2850,6 +2850,34 @@ public abstract class World implements IBlockAccess {
         return entityhuman;
     }
 
+    // PaperSpigot start - Find players with the spawning flag
+    public EntityHuman findNearbyPlayerWhoAffectsSpawning(Entity entity, double radius) {
+        return this.findNearbyPlayerWhoAffectsSpawning(entity.locX, entity.locY, entity.locZ, radius);
+    }
+
+    public EntityHuman findNearbyPlayerWhoAffectsSpawning(double x, double y, double z, double radius) {
+        double nearestRadius = - 1.0D;
+        EntityHuman entityHuman = null;
+
+        for (int i = 0; i < this.players.size(); ++i) {
+            EntityHuman nearestPlayer = (EntityHuman) this.players.get(i);
+
+            if (nearestPlayer == null || nearestPlayer.dead || !nearestPlayer.affectsSpawning) {
+                continue;
+            }
+
+            double distance = nearestPlayer.e(x, y, z);
+
+            if ((radius < 0.0D || distance < radius * radius) && (nearestRadius == -1.0D || distance < nearestRadius)) {
+                nearestRadius = distance;
+                entityHuman = nearestPlayer;
+            }
+        }
+
+        return entityHuman;
+    }
+    // PaperSpigot end
+
     public EntityHuman a(String s) {
         for (int i = 0; i < this.players.size(); ++i) {
             EntityHuman entityhuman = (EntityHuman) this.players.get(i);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index a282b68d6..096615edc 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1449,6 +1449,17 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
             packet.components = components;
             getHandle().playerConnection.sendPacket( packet );
         }
+
+        // PaperSpigot start - Add affects spawning API
+        public void setAffectsSpawning(boolean affects) {
+            getHandle().affectsSpawning = affects;
+        }
+
+        public boolean getAffectsSpawning() {
+            return getHandle().affectsSpawning;
+        }
+        // PaperSpigot end
+
     };
 
     public Player.Spigot spigot()
-- 
2.13.3