kc3-lang/SDL/Xcode-iOS/Demos/src/rectangles.c

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• Hash : 1bd4b7fd
  Author :
  Date : 2020-11-06T13:03:07
  

  Updated iOS tests and demos for latest SDL linking requirements

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• Xcode-iOS/Demos/src/rectangles.c

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

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