dengine::EventSystem Class Reference

Event System. More...

#include <EventSystem.h>

Public Types
typedef std::function< void(SDL_Event &)>	EventCallback

Public Member Functions
	EventSystem ()
void	RegisterEventCallback (Uint32 eventType, EventCallback callback)
	Function to register an event callback. More...
void	DeregisterEventCallback (Uint32 eventType)
	Function to deregister an event callback. More...
void	processEvents ()
	Process events, including custom events. More...
void	cleanup ()
	Clean up resources. More...

Public Attributes
std::map< Uint32, EventCallback >	eventCallbacks

Detailed Description

Event System.

Member Typedef Documentation

EventCallback

typedef std::function<void(SDL_Event&)> dengine::EventSystem::EventCallback

Constructor & Destructor Documentation

EventSystem()

EventSystem::EventSystem

(

)

Member Function Documentation

cleanup()

void dengine::EventSystem::cleanup

(

)

Clean up resources.

DeregisterEventCallback()

void dengine::EventSystem::DeregisterEventCallback ( Uint32  eventType )

inline

Function to deregister an event callback.

Parameters

eventType

The type of event you want to deregister

processEvents()

void dengine::EventSystem::processEvents ( )

inline

Process events, including custom events.

Referenced by dengine::Game::loop().

RegisterEventCallback()

void dengine::EventSystem::RegisterEventCallback ( Uint32  eventType, EventCallback  callback  )

inline

Function to register an event callback.

Parameters

eventType	The type of event your want this registered for
callback	The callback itself

void StartGameButton::CheckMouseHover(SDL_Event& event){
   if(event.type == SDL_MOUSEMOTION) {
        int x, y;
        SDL_GetMouseState(&x, &y);

        if (x > textRect.x && x < textRect.x + textRect.w
            && y > textRect.y && y < textRect.y + textRect.h) {
            inRect = true;
            SetDrawColor({255, 0, 0, 255});
        } else {
            inRect = false;
            SetDrawColor({255, 102, 255, 255});
        }
    }else if(event.type == SDL_MOUSEBUTTONUP){
        OnClick();
    }
}

void StartGameButton::Start(){
    Game::GetInstance().GetEventSystem()->RegisterEventCallback(SDL_MOUSEMOTION, [this](SDL_Event& event) {
        CheckMouseHover(event);
    });
    Game::GetInstance().GetEventSystem()->RegisterEventCallback(SDL_MOUSEBUTTONUP, [this](SDL_Event& event) {
        CheckMouseHover(event);
    });
}

Member Data Documentation

eventCallbacks

std::map<Uint32, EventCallback> dengine::EventSystem::eventCallbacks