Fix RenderableContext didn't check if mapHandler is null in input()

engine/src/main/java/com/bartlomiejpluta/base/engine/project/model/RenderableContext.java

@@ -61,7 +61,9 @@ public class RenderableContext implements Context, Updatable, Renderable {
    }
 
    public void input(Window window) {
-      mapHandler.input(window);
+      if (mapHandler != null) {
+         mapHandler.input(window);
+      }
    }
 
    @Override