🛠️🐜 Antkeeper superbuild with dependencies included
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92 lines
2.0 KiB
92 lines
2.0 KiB
/*
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* rectangles.c
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* written by Holmes Futrell
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* use however you want
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*/
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#include "SDL.h"
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#include <time.h>
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#include "common.h"
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void
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render(SDL_Renderer *renderer)
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{
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Uint8 r, g, b;
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int renderW;
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int renderH;
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SDL_RenderGetLogicalSize(renderer, &renderW, &renderH);
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/* Come up with a random rectangle */
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SDL_Rect rect;
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rect.w = randomInt(64, 128);
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rect.h = randomInt(64, 128);
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rect.x = randomInt(0, renderW);
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rect.y = randomInt(0, renderH);
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/* Come up with a random color */
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r = randomInt(50, 255);
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g = randomInt(50, 255);
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b = randomInt(50, 255);
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/* Fill the rectangle in the color */
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SDL_SetRenderDrawColor(renderer, r, g, b, 255);
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SDL_RenderFillRect(renderer, &rect);
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/* update screen */
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SDL_RenderPresent(renderer);
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}
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int
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main(int argc, char *argv[])
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{
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SDL_Window *window;
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SDL_Renderer *renderer;
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int done;
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SDL_Event event;
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int windowW;
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int windowH;
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/* initialize SDL */
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if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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fatalError("Could not initialize SDL");
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}
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/* seed random number generator */
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srand(time(NULL));
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/* create window and renderer */
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window = SDL_CreateWindow(NULL, 0, 0, 320, 480, SDL_WINDOW_ALLOW_HIGHDPI);
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if (window == 0) {
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fatalError("Could not initialize Window");
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}
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renderer = SDL_CreateRenderer(window, -1, 0);
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if (!renderer) {
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fatalError("Could not create renderer");
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}
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SDL_GetWindowSize(window, &windowW, &windowH);
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SDL_RenderSetLogicalSize(renderer, windowW, windowH);
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/* Fill screen with black */
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SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
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SDL_RenderClear(renderer);
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/* Enter render loop, waiting for user to quit */
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done = 0;
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while (!done) {
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while (SDL_PollEvent(&event)) {
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if (event.type == SDL_QUIT) {
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done = 1;
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}
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}
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render(renderer);
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SDL_Delay(1);
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}
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/* shutdown SDL */
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SDL_Quit();
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return 0;
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}
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