Fixed exploit where you could gain tons of Acrobatics XP from spamming

Ender Pearls

src/main/java/com/gmail/nossr50/util/ModChecks.java

@@ -15,6 +15,7 @@ public class ModChecks {
     private static Config configInstance = Config.getInstance();
     private static boolean customToolsEnabled = configInstance.getToolModsEnabled();
     private static boolean customArmorEnabled = configInstance.getArmorModsEnabled();
+    private static boolean customBlocksEnabled = configInstance.getBlockModsEnabled();
 
     private static CustomToolsConfig toolInstance = CustomToolsConfig.getInstance();
     private static CustomArmorConfig armorInstance = CustomArmorConfig.getInstance();
@@ -60,6 +61,21 @@ public class ModChecks {
         return null;
     }
 
+    /**
+     * Check if a custom block is a custom block.
+     *
+     * @param block The block to check
+     * @return true if the block is custom, false otherwise
+     */
+    public static boolean isCustomMiningBlock(Block block) {
+        if (customBlocksEnabled && blocksInstance.customMiningBlocks.contains(new ItemStack(block.getTypeId(), 1, (short) 0, block.getData()))) {
+            return true;
+        }
+        else {
+            return false;
+        }
+    }
+
     /**
      * Check if a custom block is a leaf block.
      *