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  1. #include <iostream>
  2. #include <vector>
  3. #include <functional>
  4.  
  5. namespace TGE
  6. {
  7.     class EventListener
  8.     {
  9.         public:
  10.             typedef struct
  11.             {
  12.                 std::function<void()> run;
  13.                 bool triggered;
  14.                 std::string name;
  15.             } Event;
  16.  
  17.             template <typename F>
  18. 			void newEvent(F onRun, std::string eventName)
  19.             {
  20.                 Event newEvent;
  21.                 newEvent.name = eventName;
  22.                 newEvent.triggered = false;
  23.                 newEvent.run = onRun;
  24.                 eventStack.push_back(newEvent);
  25.             }
  26.  
  27.             void trigger(std::string eventName)
  28.             {
  29.                 std::vector<Event>::iterator itr;
  30.  
  31.                 for(itr = eventStack.begin(); itr != eventStack.end(); itr++)
  32.                 {
  33.                     if(itr->name == eventName) itr->triggered = true;
  34.                 }
  35.             }
  36.  
  37.         protected:
  38.             std::vector<Event> eventStack;
  39.     };
  40. }
  41.  
  42. class MenuState : protected TGE::EventListener
  43. {
  44.     public:
  45.         void enter()
  46.         {
  47.             newEvent([=](){Event1();}, "Event1");
  48.             trigger("Event1");
  49.  
  50.             std::vector<Event>::iterator itr;
  51.             for(itr = eventStack.begin(); itr != eventStack.end(); itr++)
  52.             {
  53.                 if(itr->triggered)
  54.                 {
  55.                     itr->run();
  56.                     itr->triggered = false;
  57.                 }
  58.             }
  59.         }
  60.  
  61.         void Event1()
  62.         {
  63.             std::cout << "Event1";
  64.         }
  65. };
  66.  
  67. int main()
  68. {
  69.     MenuState* menuState = 0;
  70.     menuState = new MenuState();
  71.     menuState->enter();
  72.  
  73.     return 0;
  74. }
Success #stdin #stdout 0s 3432KB
comments (?)
stdin 
Standard input is empty
stdout 
Event1
https://ideone.com/CViIZy
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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