More parsing work

src/engine/objects/ItemTemplate.java

@@ -224,8 +224,8 @@ public class ItemTemplate {
                 if (attack_anim_left.isEmpty() == false)
                     for (Object o : attack_anim_left) {
                         JSONArray animationEntry = (JSONArray) o;
-                        int animation = (int) animationEntry.get(0);
-                        int duration = (int) animationEntry.get(1);
+                        int animation = ((Long) animationEntry.get(0)).intValue();
+                        int duration = ((Long) animationEntry.get(1)).intValue();
                         weapon_attack_anim_left.add(new int[]{animation, duration});
                     }