Created
January 24, 2024 12:09
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Basic template sdl2
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| #include <stdio.h> | |
| #include <SDL2/SDL.h> | |
| #define FALSE 0 | |
| #define TRUE 1 | |
| #define WINDOW_WIDTH 800 | |
| #define WINDOW_HEIGHT 600 | |
| #define FPS 30 | |
| #define FRAME_TARGET_TIME (1000 / FPS) | |
| int game_is_running = FALSE; | |
| SDL_Window* window = NULL; | |
| SDL_Renderer* renderer = NULL; | |
| int last_frame_time = 0; | |
| struct ball { | |
| float x; | |
| float y; | |
| float width; | |
| float height; | |
| } ball; | |
| int initialize_window(void) { | |
| if(SDL_Init(SDL_INIT_EVERYTHING) != 0) { | |
| fprintf(stderr, "Erro initializing SDL.\n"); | |
| return FALSE; | |
| } | |
| window = SDL_CreateWindow( | |
| NULL, | |
| SDL_WINDOWPOS_CENTERED, | |
| SDL_WINDOWPOS_CENTERED, | |
| WINDOW_WIDTH, | |
| WINDOW_HEIGHT, | |
| SDL_WINDOW_BORDERLESS | |
| ); | |
| if(!window) { | |
| fprintf(stderr, "Erro creating SDL window.\n"); | |
| return FALSE; | |
| } | |
| renderer = SDL_CreateRenderer(window, -1, 0); | |
| if(!renderer) { | |
| fprintf(stderr, "Erro creating SDL renderer.\n"); | |
| return FALSE; | |
| } | |
| return TRUE; | |
| } | |
| void process_input() { | |
| SDL_Event event; | |
| SDL_PollEvent(&event); | |
| switch (event.type) { | |
| case SDL_QUIT: | |
| game_is_running = FALSE; | |
| break; | |
| case SDL_KEYDOWN: | |
| if(event.key.keysym.sym == SDLK_ESCAPE) | |
| game_is_running = FALSE; | |
| break; | |
| } | |
| } | |
| void setup() { | |
| ball.x = 20; | |
| ball.y = 20; | |
| ball.width = 15; | |
| ball.height = 15; | |
| } | |
| void update() { | |
| // int time_to_wait = FRAME_TARGET_TIME - (SDL_GetTicks() - last_frame_time); | |
| // if(time_to_wait > 0 && time_to_wait <= FRAME_TARGET_TIME) { | |
| // SDL_Delay(time_to_wait); | |
| // } | |
| float delta_time = (SDL_GetTicks() - last_frame_time) / 1000.0f; | |
| last_frame_time = SDL_GetTicks(); | |
| ball.x += 50 * delta_time; | |
| ball.y += 50 * delta_time; | |
| } | |
| void render() { | |
| SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255); | |
| SDL_RenderClear(renderer); | |
| // Draw rectangle | |
| SDL_Rect ball_rect = { | |
| (int)ball.x, | |
| (int)ball.y, | |
| (int)ball.width, | |
| (int)ball.height | |
| }; | |
| SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255); | |
| SDL_RenderFillRect(renderer, &ball_rect); | |
| SDL_RenderPresent(renderer); | |
| } | |
| void destroy_window() { | |
| SDL_DestroyRenderer(renderer); | |
| SDL_DestroyWindow(window); | |
| SDL_Quit(); | |
| } | |
| int main() { | |
| game_is_running = initialize_window(); | |
| setup(); | |
| while(game_is_running) { | |
| process_input(); | |
| update(); | |
| render(); | |
| } | |
| destroy_window(); | |
| return 0; | |
| } |
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