1 files changed, 8 insertions, 2 deletions

@@ -1,11 +1,17 @@
 #ifndef SYSTEM_H_B61A8CEA
 #define SYSTEM_H_B61A8CEA
 
-class EntityManager;
+class Game;
 
 class System {
   public:
-    virtual void tick(EntityManager& manager, float dt) = 0;
+    System(Game& game)
+      : game(game) {}
+    
+    virtual void tick(double dt) = 0;
+    
+  protected:
+    Game& game;
 };
 
 #endif /* end of include guard: SYSTEM_H_B61A8CEA */