Mercurial > sdl-ios-xcode
annotate Xcode-iPhoneOS/Template/SDL Application/main.c @ 4433:9fa97c6b0014
Fixed bug 984
SDL_CreateTexture allows the creation of textures of size 0, which can lead to div by 0 errors
author | Sam Lantinga <slouken@libsdl.org> |
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date | Thu, 15 Apr 2010 21:27:32 -0700 |
parents | 20326ba2bda2 |
children | b6c7a6b07ebf |
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1 /* |
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2 * rectangles.c |
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3 * written by Holmes Futrell |
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4 * use however you want |
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5 */ |
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6 |
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7 #include "SDL.h" |
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8 #include <time.h> |
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9 |
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10 #define SCREEN_WIDTH 320 |
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11 #define SCREEN_HEIGHT 480 |
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12 |
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13 int |
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14 randomInt(int min, int max) |
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15 { |
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16 return min + rand() % (max - min + 1); |
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17 } |
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18 |
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19 void |
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20 render(void) |
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21 { |
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22 |
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23 Uint8 r, g, b; |
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24 /* Come up with a random rectangle */ |
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25 SDL_Rect rect; |
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26 rect.w = randomInt(64, 128); |
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27 rect.h = randomInt(64, 128); |
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28 rect.x = randomInt(0, SCREEN_WIDTH); |
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29 rect.y = randomInt(0, SCREEN_HEIGHT); |
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30 |
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31 /* Come up with a random color */ |
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32 r = randomInt(50, 255); |
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33 g = randomInt(50, 255); |
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34 b = randomInt(50, 255); |
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35 |
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36 /* Fill the rectangle in the color */ |
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37 SDL_RenderFill(r, g, b, 255, &rect); |
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38 |
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39 /* update screen */ |
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40 SDL_RenderPresent(); |
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41 |
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42 } |
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43 |
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44 int |
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45 main(int argc, char *argv[]) |
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46 { |
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47 |
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48 SDL_WindowID windowID; |
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49 int done; |
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50 SDL_Event event; |
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51 |
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52 /* initialize SDL */ |
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53 if (SDL_Init(SDL_INIT_VIDEO) < 0) { |
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54 printf("Could not initialize SDL\n"); |
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55 } |
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56 |
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57 /* seed random number generator */ |
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58 srand(time(NULL)); |
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59 |
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60 /* create window and renderer */ |
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61 windowID = |
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62 SDL_CreateWindow(NULL, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, |
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63 SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN); |
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64 if (windowID == 0) { |
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65 printf("Could not initialize Window\n"); |
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66 } |
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67 if (SDL_CreateRenderer(windowID, -1, 0) != 0) { |
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68 printf("Could not create renderer\n"); |
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69 } |
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70 |
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71 /* Fill screen with black */ |
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72 SDL_RenderFill(0, 0, 0, 0, NULL); |
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73 |
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74 /* Enter render loop, waiting for user to quit */ |
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75 done = 0; |
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76 while (!done) { |
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77 while (SDL_PollEvent(&event)) { |
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78 if (event.type == SDL_QUIT) { |
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79 done = 1; |
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80 } |
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81 } |
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82 render(); |
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83 SDL_Delay(1); |
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84 } |
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85 |
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86 /* shutdown SDL */ |
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87 SDL_Quit(); |
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88 |
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89 return 0; |
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90 } |