Paper/Spigot-Server-Patches/0018-Player-affects-spawning-API.patch

From 93881570845dac907b09471b5dbdefec903fbdf2 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 83f84ea..344ff69 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -64,6 +64,7 @@ public abstract class EntityHuman extends EntityLiving {
     private ItemStack bT = null;
     private final ItemCooldown bU = this.l();
     public EntityFishingHook hookedFish;
+    public boolean affectsSpawning = true; // Paper
 
     // 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 fdda1ae..6ad5279 100644
--- a/src/main/java/net/minecraft/server/EntityInsentient.java
+++ b/src/main/java/net/minecraft/server/EntityInsentient.java
@@ -593,7 +593,7 @@ public abstract class EntityInsentient extends EntityLiving {
         if (this.persistent) {
             this.ticksFarFromPlayer = 0;
         } else {
-            EntityHuman entityhuman = this.world.findNearbyPlayer(this, -1.0D);
+            EntityHuman entityhuman = this.world.findNearbyPlayerWhoAffectsSpawning(this, -1.0D); // Paper - Affects Spawning API
 
             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 a7903a2..2eee845 100644
--- a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
@@ -32,7 +32,7 @@ public abstract class MobSpawnerAbstract {
     private boolean h() {
         BlockPosition blockposition = this.b();
 
-        return this.a().isPlayerNearby((double) blockposition.getX() + 0.5D, (double) blockposition.getY() + 0.5D, (double) blockposition.getZ() + 0.5D, (double) this.requiredPlayerRange);
+        return this.a().isPlayerNearbyWhoAffectsSpawning((double) blockposition.getX() + 0.5D, (double) blockposition.getY() + 0.5D, (double) blockposition.getZ() + 0.5D, (double) this.requiredPlayerRange); // Paper - Affects spawning API
     }
 
     public void c() {
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index 9e19dfd..b724586 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -50,7 +50,7 @@ public final class SpawnerCreature {
             while (iterator.hasNext()) {
                 EntityHuman entityhuman = (EntityHuman) iterator.next();
 
-                if (!entityhuman.isSpectator()) {
+                if (!entityhuman.isSpectator() || !entityhuman.affectsSpawning) {
                     int l = MathHelper.floor(entityhuman.locX / 16.0D);
 
                     j = MathHelper.floor(entityhuman.locZ / 16.0D);
@@ -160,7 +160,7 @@ public final class SpawnerCreature {
                                                 float f = (float) j3 + 0.5F;
                                                 float f1 = (float) l3 + 0.5F;
 
-                                                if (!worldserver.isPlayerNearby((double) f, (double) k3, (double) f1, 24.0D) && blockposition.distanceSquared((double) f, (double) k3, (double) f1) >= 576.0D) {
+                                                if (!worldserver.isPlayerNearbyWhoAffectsSpawning((double) f, (double) k3, (double) f1, 24.0D) && blockposition.distanceSquared((double) f, (double) k3, (double) f1) >= 576.0D) {
                                                     if (biomebase_biomemeta == null) {
                                                         biomebase_biomemeta = worldserver.a(enumcreaturetype, (BlockPosition) blockposition_mutableblockposition);
                                                         if (biomebase_biomemeta == null) {
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 17c0b00..9124558 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -2688,6 +2688,53 @@ public abstract class World implements IBlockAccess {
         return i;
     }
 
+    // Paper start - Modified methods for affects spawning
+    public EntityHuman findNearbyPlayerWhoAffectsSpawning(Entity entity, double d0) {
+        return this.findNearbyPlayerWhoAffectsSpawning(entity.locX, entity.locY, entity.locZ, d0);
+    }
+
+    public EntityHuman findNearbyPlayerWhoAffectsSpawning(double d0, double d1, double d2, double d3) {
+        double d4 = -1.0D;
+        EntityHuman entityhuman = null;
+
+        for (int i = 0; i < this.players.size(); ++i) {
+            EntityHuman entityhuman1 = (EntityHuman) this.players.get(i);
+            // CraftBukkit start - Fixed an NPE
+            if (entityhuman1 == null || entityhuman1.dead || !entityhuman1.affectsSpawning) {
+                continue;
+            }
+            // CraftBukkit end
+
+            if (IEntitySelector.d.apply(entityhuman1)) {
+                double d5 = entityhuman1.e(d0, d1, d2);
+
+                if ((d3 < 0.0D || d5 < d3 * d3) && (d4 == -1.0D || d5 < d4)) {
+                    d4 = d5;
+                    entityhuman = entityhuman1;
+                }
+            }
+        }
+
+        return entityhuman;
+    }
+
+    public boolean isPlayerNearbyWhoAffectsSpawning(double d0, double d1, double d2, double d3) {
+        for (int i = 0; i < this.players.size(); ++i) {
+            EntityHuman entityhuman = (EntityHuman) this.players.get(i);
+
+            if (IEntitySelector.d.apply(entityhuman)) {
+                double d4 = entityhuman.e(d0, d1, d2);
+
+                if (d3 < 0.0D || d4 < d3 * d3 && entityhuman.affectsSpawning) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+    // Paper end
+
     public EntityHuman findNearbyPlayer(Entity entity, double d0) {
         return this.a(entity.locX, entity.locY, entity.locZ, d0, false);
     }
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 90de39a..4bf9c71 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1406,6 +1406,18 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
     }
 
+    // Paper start
+    @Override
+    public boolean getAffectsSpawning() {
+        return getHandle().affectsSpawning;
+    }
+
+    @Override
+    public void setAffectsSpawning(boolean affects) {
+        getHandle().affectsSpawning = affects;
+    }
+    // Paper end
+
     // Spigot start
     private final Player.Spigot spigot = new Player.Spigot()
     {
-- 
2.7.4