Paper/Spigot-Server-Patches/0019-Player-affects-spawning-API.patch

From ba8fc1510d97add8edc358ee242c8227ac70afd7 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 cbceeca..cddc7f4 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -1,6 +1,7 @@
 package net.minecraft.server;
 
 import com.google.common.base.Charsets;
+import com.google.common.base.Predicate; // Paper
 import com.google.common.collect.Lists;
 import com.mojang.authlib.GameProfile;
 import java.util.Arrays;
@@ -65,6 +66,19 @@ public abstract class EntityHuman extends EntityLiving {
     private final ItemCooldown bW = this.l();
     public EntityFishingHook hookedFish;
 
+    // Paper start - affectsSpawning API
+    public boolean affectsSpawning = true;
+
+    public static Predicate<EntityHuman> affectsSpawningFilter() {
+        return new Predicate<EntityHuman>() {
+            @Override
+            public boolean apply(EntityHuman entityHuman) {
+                return entityHuman.affectsSpawning;
+            }
+        };
+    }
+    // Paper end
+
     // CraftBukkit start
     public boolean fauxSleeping;
     public String spawnWorld = "";
diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java
index 85d4b81..74aaba2 100644
--- a/src/main/java/net/minecraft/server/EntityInsentient.java
+++ b/src/main/java/net/minecraft/server/EntityInsentient.java
@@ -625,7 +625,7 @@ 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.findNearbyPlayer(this, -1.0D, EntityHuman.affectsSpawningFilter()); // Paper - affectsSpawning filter
 
             if (entityhuman != null) {
                 double d0 = entityhuman.locX - this.locX;
diff --git a/src/main/java/net/minecraft/server/EntitySilverfish.java b/src/main/java/net/minecraft/server/EntitySilverfish.java
index c4e5f50..d6c70c4 100644
--- a/src/main/java/net/minecraft/server/EntitySilverfish.java
+++ b/src/main/java/net/minecraft/server/EntitySilverfish.java
@@ -93,7 +93,7 @@ public class EntitySilverfish extends EntityMonster {
 
     public boolean cK() {
         if (super.cK()) {
-            EntityHuman entityhuman = this.world.b(this, 5.0D);
+            EntityHuman entityhuman = this.world.findNearbyPlayerNotInCreativeMode(this, 5.0D, EntityHuman.affectsSpawningFilter()); // Paper - affectsSpawning filter
 
             return entityhuman == null;
         } else {
diff --git a/src/main/java/net/minecraft/server/EntityZombie.java b/src/main/java/net/minecraft/server/EntityZombie.java
index 3145bdc..6981185 100644
--- a/src/main/java/net/minecraft/server/EntityZombie.java
+++ b/src/main/java/net/minecraft/server/EntityZombie.java
@@ -197,7 +197,7 @@ public class EntityZombie extends EntityMonster {
 
                     if (this.world.getType(new BlockPosition(i1, j1 - 1, k1)).q() && this.world.getLightLevel(new BlockPosition(i1, j1, k1)) < 10) {
                         entityzombie.setPosition((double) i1, (double) j1, (double) k1);
-                        if (!this.world.isPlayerNearby((double) i1, (double) j1, (double) k1, 7.0D) && this.world.a(entityzombie.getBoundingBox(), (Entity) entityzombie) && this.world.getCubes(entityzombie, entityzombie.getBoundingBox()).isEmpty() && !this.world.containsLiquid(entityzombie.getBoundingBox())) {
+                        if (!this.world.isPlayerNearby((double) i1, (double) j1, (double) k1, 7.0D, EntityHuman.affectsSpawningFilter()) && this.world.a(entityzombie.getBoundingBox(), (Entity) entityzombie) && this.world.getCubes(entityzombie, entityzombie.getBoundingBox()).isEmpty() && !this.world.containsLiquid(entityzombie.getBoundingBox())) { // Paper - affectsSpawning filter
                             this.world.addEntity(entityzombie, CreatureSpawnEvent.SpawnReason.REINFORCEMENTS); // CraftBukkit
                             entityzombie.setGoalTarget(entityliving, EntityTargetEvent.TargetReason.REINFORCEMENT_TARGET, true);
                             entityzombie.prepare(this.world.D(new BlockPosition(entityzombie)), (GroupDataEntity) null);
diff --git a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
index 7bae42a..f040775 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().isPlayerNearby((double) blockposition.getX() + 0.5D, (double) blockposition.getY() + 0.5D, (double) blockposition.getZ() + 0.5D, (double) this.requiredPlayerRange, EntityHuman.affectsSpawningFilter()); // Paper - affectsSpawning filter
     }
 
     public void c() {
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index f8a871d..55c36fc 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -50,6 +50,8 @@ public final class SpawnerCreature {
             while (iterator.hasNext()) {
                 EntityHuman entityhuman = (EntityHuman) iterator.next();
 
+                if (!entityhuman.affectsSpawning) continue; // Paper - affectsSpawning check
+
                 if (!entityhuman.isSpectator()) {
                     int l = MathHelper.floor(entityhuman.locX / 16.0D);
 
@@ -160,7 +162,7 @@ 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.isPlayerNearby((double) f, (double) k3, (double) f1, 24.0D, EntityHuman.affectsSpawningFilter()) && blockposition.distanceSquared((double) f, (double) k3, (double) f1) >= 576.0D) { // Paper - affectsSpawning filter
                                                     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 c110c74..da6b78b 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -3,6 +3,7 @@
 import com.google.common.base.Function;
 import com.google.common.base.Objects;
 import com.google.common.base.Predicate;
+import com.google.common.base.Predicates; // Paper
 import com.google.common.collect.Lists;
 import java.util.ArrayList;
 import java.util.Calendar;
@@ -2705,16 +2706,31 @@ public abstract class World implements IBlockAccess {
 
     @Nullable
     public EntityHuman findNearbyPlayer(Entity entity, double d0) {
-        return this.a(entity.locX, entity.locY, entity.locZ, d0, false);
+        // Paper start - Add filter parameter
+        return findNearbyPlayer(entity, d0, Predicates.<EntityHuman>alwaysTrue());
+    }
+
+    public EntityHuman findNearbyPlayer(Entity entity, double d0, Predicate<EntityHuman> filter) {
+        return this.findNearbyPlayer(entity.locX, entity.locY, entity.locZ, d0, false, filter);
     }
 
     @Nullable
     public EntityHuman b(Entity entity, double d0) {
-        return this.a(entity.locX, entity.locY, entity.locZ, d0, true);
+        return this.findNearbyPlayerNotInCreativeMode(entity, d0, Predicates.<EntityHuman>alwaysTrue());
+    }
+
+    public EntityHuman findNearbyPlayerNotInCreativeMode(Entity entity, double d0, Predicate<EntityHuman> filter) {
+        return this.findNearbyPlayer(entity.locX, entity.locY, entity.locZ, d0, true, filter);
     }
 
     @Nullable
     public EntityHuman a(double d0, double d1, double d2, double d3, boolean flag) {
+        return findNearbyPlayer(d0, d1, d2, d3, flag, Predicates.<EntityHuman>alwaysTrue());
+    }
+
+    public EntityHuman findNearbyPlayer(double d0, double d1, double d2, double d3, boolean flag, Predicate<EntityHuman> filter) {
+        // FYI the flag means "exclude creative mode players"
+        // Paper end
         double d4 = -1.0D;
         EntityHuman entityhuman = null;
 
@@ -2726,6 +2742,8 @@ public abstract class World implements IBlockAccess {
             }
             // CraftBukkit end
 
+            if (!filter.apply(entityhuman1)) continue; // Paper - check filter
+
             if ((IEntitySelector.d.apply(entityhuman1) || !flag) && (IEntitySelector.e.apply(entityhuman1) || flag)) {
                 double d5 = entityhuman1.e(d0, d1, d2);
 
@@ -2740,9 +2758,17 @@ public abstract class World implements IBlockAccess {
     }
 
     public boolean isPlayerNearby(double d0, double d1, double d2, double d3) {
+        // Paper start - add filter parameter
+        return isPlayerNearby(d0, d1, d2, d3, Predicates.<EntityHuman>alwaysTrue());
+    }
+
+    public boolean isPlayerNearby(double d0, double d1, double d2, double d3, Predicate<EntityHuman> filter) {
+        // Paper end
         for (int i = 0; i < this.players.size(); ++i) {
             EntityHuman entityhuman = (EntityHuman) this.players.get(i);
 
+            if (!filter.apply(entityhuman)) continue; // Paper - check filter
+
             if (IEntitySelector.e.apply(entityhuman)) {
                 double d4 = entityhuman.e(d0, d1, d2);
 
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 6b3bbfe..11e3028 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1423,6 +1423,16 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
     }
 
+    @Override
+    public void setAffectsSpawning(boolean affects) {
+        this.getHandle().affectsSpawning = affects;
+    }
+
+    @Override
+    public boolean getAffectsSpawning() {
+        return this.getHandle().affectsSpawning;
+    }
+
     // Spigot start
     private final Player.Spigot spigot = new Player.Spigot()
     {
-- 
2.8.3