Add API for ambient mob spawn limit. Adds BUKKIT-2765

By: Travis Watkins <amaranth@ubuntu.com>

paper-api/src/main/java/org/bukkit/Bukkit.java

@@ -371,6 +371,10 @@ public final class Bukkit {
         return server.getWaterAnimalSpawnLimit();
     }
 
+    public static int getAmbientSpawnLimit() {
+        return server.getAmbientSpawnLimit();
+    }
+
     public static boolean isPrimaryThread() {
         return server.isPrimaryThread();
     }

paper-api/src/main/java/org/bukkit/Server.java

@@ -648,6 +648,12 @@ public interface Server extends PluginMessageRecipient {
      */
     int getWaterAnimalSpawnLimit();
 
+    /**
+     * Gets user-specified limit for number of ambient mobs that can spawn in a chunk
+     * @returns The ambient spawn limit
+     */
+    int getAmbientSpawnLimit();
+
     /**
      * Returns true if the current {@link Thread} is the server's primary thread
      */
@@ -666,4 +672,4 @@ public interface Server extends PluginMessageRecipient {
      * @return The configured WarningState
      */
     public WarningState getWarningState();
-}
+}

paper-api/src/main/java/org/bukkit/World.java

@@ -983,6 +983,20 @@ public interface World extends PluginMessageRecipient, Metadatable {
      */
     void setWaterAnimalSpawnLimit(int limit);
 
+    /**
+     * Gets the limit for number of ambient mobs that can spawn in a chunk in this world
+     * @returns The ambient spawn limit
+     */
+    int getAmbientSpawnLimit();
+
+    /**
+     * Sets the limit for number of ambient mobs that can spawn in a chunk in this world
+     * <p />
+     * <b>Note:</b>
+     * If set to a negative number the world will use the server-wide spawn limit instead.
+     */
+    void setAmbientSpawnLimit(int limit);
+
     /**
      * Play a Sound at the provided Location in the World
      * <p />