Schedule systems based on their declared dependencies

[libs/game.git] / source / game / system.h

diff --git a/source/game/system.h b/source/game/system.h
index 8c9c8b1316428258c2c4e3f84858386a75f73a20..09ee157a6953916522702cf0543ac75872f8ac78 100644 (file)
--- a/source/game/system.h
+++ b/source/game/system.h
@@ -27,8 +27,11 @@ public:
                ORDER_MASK = 24
        };
 
-       struct Dependency
+       class Dependency
        {
+               friend class System;
+
+       private:
                DependencyFlags flags = NO_DEPENDENCY;
                const Reflection::ClassBase &type;
                void (*prepare)(Stage &) = nullptr;
@@ -36,7 +39,11 @@ public:
                void (*unblock)(DependencyFlags) = nullptr;
                void (*block)(DependencyFlags) = nullptr;
 
+       public:
                Dependency(const Reflection::ClassBase &t): type(t) { }
+
+               DependencyFlags get_flags() const { return flags; }
+               const Reflection::ClassBase &get_type() const { return type; }
        };
 
        class Activator: public NonCopyable
@@ -67,6 +74,8 @@ protected:
        void declare_dependency(DependencyFlags);
 
 public:
+       const std::vector<Dependency> &get_dependencies() const { return dependencies; }
+
        void begin_tick();
        virtual void tick(Time::TimeDelta) = 0;
        void end_tick();