//Main loop flagbool quit=false;//Event handlerSDL_Event e;//设置默认的当前表面gCurrentSurface=gKeyPressSurfaces[KEY_PRESS_SURFACE_DEFAULT];//While application is runningwhile(!quit){//Handle events on queuewhile(SDL_PollEvent(&e)!=0){//用户请求退出if(e.type==SDL_QUIT){quit=true;}//...
60、ror. if ( screen = NULL ) fprintf(stderr, "Unable to set 640x480 video: %sn", SDL_GetError(); exit(1); / Main loop: loop forever. while (1) / Render stuff render(); / Poll for events, and handle the ones we care about. SDL_Event event; while (SDL_PollEvent(&event)...
//Main loop flagbool quit=false;//Event handlerSDL_Event e;//调制成分Uint8 r=255;Uint8 g=255;Uint8 b=255; 这里是主循环之前。在这个演示中,我们将使用按键来调制各个颜色组件。要做到这一点,我们需要跟踪颜色组件的值。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 //While application is ...
void emscripten_set_main_loop(em_callback_func func, int fps, int simulate_infinite_loop); 1. 2. 看参数名字就知道他们是什么意思了。fps如果是负数,则使用浏览器的requestAnimationFrame机制来更新。simulate_infinite_loop总应当是1,以便于浏览器执行循环。 如果你要给mainloop传参,就用第一个函数,别忘...
一.事件循环 --- 一个完整的GUI程序，需要处理各种事件，如按键，鼠标，窗口操作等。一般这种程序会设计成一个与底层交互的事件驱动模型。即底层不断发送事件，而在程序用一个循环不断处理各种事件 各个GUI都是采用这样模型来实现，SDL抽象这个模型，采用SDL_event来抽象表示具体的事件，它有如下几种类型。/** Eve...
int main(int argc, char* argv[]) { if (SDL_Init(SDL_INIT_EVERYTHING) == -1) { cout << "初始化失败" << endl; return 0; } std::cout << " SDL initialized./n "; SDL_Quit(); return 0; } 运行可以发现输出的结果是初始化成功。
SDLActivity.handleNativeState(); // mCurrentNativeState是Paused,希望转到RESUMED。if (mIsSurfaceReady && mHasFocus && mIsResumedCalled),此时三个布尔变量都已是true,执行创建并运行SDLMain线程。 用户操作:把kdesktop切到后台 onWindowFocusChanged(hasFocus:false) ...
int interval = SDL_DEFAULT_REPEAT_INTERVAL);int DisableKeyRepeat ();Uint8 GetMouseState (int *x, int *y);Uint8 GetRelativeMouseState (int *x, int *y);Uint8 GetAppState ();int JoystickEventState (int state);CSDLApp 的遊戲迴圈(的遊戲迴圈(Game Loop)InitializeApp();while (!m_bQuit)...
intmain(intargc,char* argv[]) { intflag =1; SDL_Window *window;// Declare a pointer SDL_Renderer *renderer; SDL_Init(SDL_INIT_VIDEO);// Initialize SDL2 // Create an application window with the following settings: window =SDL_CreateWindow( ...
message processing2627//DRAWING STARTS HERE2829//clear screen30SDL_FillRect(screen,0, SDL_MapRGB(screen->format,0,0,0));3132//draw bitmap33//SDL_BlitSurface(bmp, 0, screen, &dstrect);3435//DRAWING ENDS HERE3637//finally, update the screen :)38SDL_Flip(screen);39}//end main loop ...