X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgame%2Fsystem.h;h=3b379178c1b6e27972cd60f9bfa31441bafbebe2;hb=c7177adc21993307482b2c18dc4db6a03361586d;hp=9e6ec2a6e923e7ca6befd3f66ae0c67aa0119099;hpb=76d859d1429782901799c9886f833cd331b670ce;p=libs%2Fgame.git

diff --git a/source/game/system.h b/source/game/system.h
index 9e6ec2a..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 {
@@ -11,6 +12,7 @@ class System
 {
 protected:
 	Stage &stage;
+	std::vector<std::function<void()>> deferred_queue;
 
 	System(Stage &s): stage(s) { }
 public:
@@ -19,6 +21,11 @@ public:
 	Stage &get_stage() const { return stage; }
 
 	virtual void tick(Time::TimeDelta) = 0;
+	virtual void deferred_tick();
+
+protected:
+	template<typename F>
+	void defer(F &&f) { deferred_queue.emplace_back(std::forward<F>(f)); }
 };
 
 } // namespace Msp::Game