X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgame%2Fsystem.h;h=3b379178c1b6e27972cd60f9bfa31441bafbebe2;hb=c7177adc21993307482b2c18dc4db6a03361586d;hp=88ba291fb50bcb05e9881014f5e6096f34939daa;hpb=248d62f7240d342982ade65a510be912b867fe49;p=libs%2Fgame.git

diff --git a/source/game/system.h b/source/game/system.h
index 88ba291..3b37917 100644
--- a/source/game/system.h
+++ b/source/game/system.h
@@ -1,6 +1,7 @@
 #ifndef MSP_GAME_SYSTEM_H_
 #define MSP_GAME_SYSTEM_H_
 
+#include <functional>
 #include <msp/time/timedelta.h>
 
 namespace Msp::Game {
@@ -11,14 +12,20 @@ class System
 {
 protected:
 	Stage &stage;
+	std::vector<std::function<void()>> deferred_queue;
 
 	System(Stage &s): stage(s) { }
 public:
 	virtual ~System() = default;
 
-	virtual void pre_tick() = 0;
+	Stage &get_stage() const { return stage; }
+
 	virtual void tick(Time::TimeDelta) = 0;
-	virtual void post_tick() = 0;
+	virtual void deferred_tick();
+
+protected:
+	template<typename F>
+	void defer(F &&f) { deferred_queue.emplace_back(std::forward<F>(f)); }
 };
 
 } // namespace Msp::Game