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Simple SDL2 window creation implementation in C
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| #ifndef APPLICATION_H | |
| #define APPLICATION_H | |
| #include <stdio.h> | |
| #include <SDL2/SDL.h> | |
| typedef struct Application { | |
| SDL_Window* window; | |
| char* title; | |
| int quit, flags; | |
| int x, y, width, height, fps; | |
| void (*step)(void); | |
| void (*load)(void); | |
| } Application; | |
| static float now; | |
| static float last; | |
| static float delta; | |
| double time(void); | |
| void init(Application* app) { | |
| if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) != 0) { | |
| fprintf(stderr, strcat("SDL2 Failed to Initialize!\n> SDL2 Error: ", SDL_GetError())); | |
| exit(-1); | |
| } | |
| app -> window = SDL_CreateWindow( | |
| app -> title ? app -> title : "Application", | |
| app -> x ? app -> x : SDL_WINDOWPOS_CENTERED, | |
| app -> y ? app -> y : SDL_WINDOWPOS_CENTERED, | |
| app -> width ? app -> width : 720, | |
| app -> height ? app -> height : 480, | |
| app -> flags ? app -> flags : SDL_WINDOW_SHOWN | |
| ); | |
| if ((app -> window) == NULL) { | |
| fprintf(stderr, strcat("SDL2 Failed to Create Window!\n> SDL2 Error: ", SDL_GetError())); | |
| exit(-1); | |
| } | |
| if (app -> load) | |
| app -> load(); | |
| last = time(); | |
| while (!(app -> quit)) { | |
| now = time(); | |
| delta = now - last; | |
| if (delta > (1000 / (app -> fps ? app -> fps : 60))) { | |
| last = now; | |
| SDL_Event event; | |
| if (SDL_PollEvent(&event)) { | |
| if (event.type == SDL_QUIT) | |
| app -> quit = 1; | |
| } | |
| if (app -> step) | |
| app -> step(); | |
| SDL_GL_SwapWindow(app -> window); | |
| } | |
| } | |
| } | |
| double time(void) { | |
| return (double) SDL_GetTicks(); | |
| } | |
| #endif // APPLICATION_H |
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| #include "Application.h" | |
| static void load(void); | |
| static void frame(void); | |
| int WinMain(int argc, char const *argv[]) { | |
| Application app = { | |
| .title = "[PROJECT NAME]", | |
| .width = 1280, .height = 720, .fps = 60, | |
| .load = load, .step = frame | |
| }; init(&app); | |
| return 0; | |
| } | |
| static void load(void) { | |
| } | |
| static void frame(void) { | |
| } |
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