X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgame%2Fsystem.cpp;h=33157c3946990c6c64b25b1b8b6f0ee8782f35da;hb=a99b57a74252fd3de649d544d070b747f91fcf4d;hp=87ba3b691eb20f5aa7311440b82d85cfe41d39e7;hpb=e3b8bcdcb5abfdc4cfaf0af0f9633ac15d1f3b69;p=libs%2Fgame.git

diff --git a/source/game/system.cpp b/source/game/system.cpp
index 87ba3b6..33157c3 100644
--- a/source/game/system.cpp
+++ b/source/game/system.cpp
@@ -1,7 +1,32 @@
 #include "system.h"
 
+using namespace std;
+
 namespace Msp::Game {
 
+thread_local System *System::active = nullptr;
+
+void System::begin_tick()
+{
+	if(active)
+		throw logic_error("System::active != nullptr");
+	active = this;
+
+	for(const Dependency &d: dependencies)
+		if(d.prepare)
+			d.prepare(stage);
+}
+
+void System::end_tick()
+{
+	for(const Dependency &d: dependencies)
+		if(d.commit)
+			d.commit(stage);
+
+	if(active==this)
+		active = nullptr;
+}
+
 void System::deferred_tick()
 {
 	for(const auto &f: deferred_queue)