I need to change my collision and movement physics engine entirely

include/scheduler.hpp

@@ -2,6 +2,7 @@
 #define SCHEDULER_HPP
 
 #include <ctime>
+#include <optional>
 #include <string>
 #include <atomic>
 #include <vector>
@@ -26,7 +27,7 @@ struct Scheduler {
 	Scheduler();
 	std::vector<Timer> timers;
 	void update(std::atomic<bool>& running);
-	int pull(std::string name);
+	std::optional<Timer*> pull(std::string name);
 };