Provide E/TE/Chunk count stat methods

Provides counts without the ineffeciency of using .getEntities().size()
which creates copy of the collections.

Spigot-API-Patches/0048-Provide-E-TE-Chunk-count-stat-methods.patch

@@ -0,0 +1,29 @@
+From 604dc8e444593ab84281c94ca4eb334164c96ea8 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sat, 7 Jan 2017 15:23:03 -0500
+Subject: [PATCH] Provide E/TE/Chunk count stat methods
+
+Provides counts without the ineffeciency of using .getEntities().size()
+which creates copy of the collections.
+
+diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
+index 56f50296..63cdcdb8 100644
+--- a/src/main/java/org/bukkit/World.java
++++ b/src/main/java/org/bukkit/World.java
+@@ -24,6 +24,13 @@ import org.bukkit.util.Vector;
+  */
+ public interface World extends PluginMessageRecipient, Metadatable {
+ 
++    // Paper start
++    int getEntityCount();
++    int getTileEntityCount();
++    int getTickableTileEntityCount();
++    int getChunkCount();
++    // Paper end
++
+     /**
+      * Gets the {@link Block} at the given coordinates
+      *
+-- 
+2.11.0
+

Spigot-Server-Patches/0201-Provide-E-TE-Chunk-count-stat-methods.patch

@@ -0,0 +1,42 @@
+From 533659e46d866b93a8dc20fd6b027351964e4da4 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sat, 7 Jan 2017 15:24:46 -0500
+Subject: [PATCH] Provide E/TE/Chunk count stat methods
+
+Provides counts without the ineffeciency of using .getEntities().size()
+which creates copy of the collections.
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+index 5a44a9f38..1c4040760 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+@@ -78,6 +78,26 @@ public class CraftWorld implements World {
+     private int chunkLoadCount = 0;
+     private int chunkGCTickCount;
+ 
++    // Paper start - Provide fast information methods
++    public int getEntityCount() {
++        return world.entityList.size();
++    }
++    public int getTileEntityCount() {
++        // We don't use the full world tile entity list, so we must iterate chunks
++        int size = 0;
++        for (net.minecraft.server.Chunk chunk : ((ChunkProviderServer) world.getChunkProvider()).chunks.values()) {
++            size += chunk.tileEntities.size();
++        }
++        return size;
++    }
++    public int getTickableTileEntityCount() {
++        return world.tileEntityListTick.size();
++    }
++    public int getChunkCount() {
++        return world.getChunkProviderServer().chunks.size();
++    }
++    // Paper end
++
+     private static final Random rand = new Random();
+ 
+     public CraftWorld(WorldServer world, ChunkGenerator gen, Environment env) {
+-- 
+2.11.0
+