added collision box/planet

src/Game.h

@@ -100,6 +100,7 @@ namespace ZL {
 
 		SparkEmitter sparkEmitter;
 		SparkEmitter projectileEmitter;
+		SparkEmitter explosionEmitter;
 		PlanetObject planetObject;
 		UiManager uiManager;
 
@@ -112,7 +113,13 @@ namespace ZL {
 
 		TaskManager taskManager;
 
-
+		bool shipAlive = true;
+		bool gameOver = false;
+		std::vector<bool> boxAlive;
+		float shipCollisionRadius = 3.5f;
+		float boxCollisionRadius = 2.0f;
+		bool uiGameOverShown = false;
+		bool showExplosion = false;
 
 	};