Working with lights and shadows

src/items/InteractiveObject.h

@@ -42,6 +42,8 @@ namespace ZL {
 		bool hasInteractionPosition = false;
 		bool isActive    = true;
 		bool isAnimating = false;        // true while a timed animation is running
+		bool castShadow      = true;     // included in day shadow depth pass regardless of isActive
+		bool castShadowNight = true;     // included in night shadow depth pass regardless of isActive
 		std::string activateFunctionName;
 
 		struct AnimTask {