annotate Xcode-iPhoneOS/Demos/src/happy.c @ 5271:e107518710f6

Removed private API use that was causing AppStore rejection Pavel Kanzelsberger to SDL I tried to submit a SDL application to the Mac AppStore and it got rejected because SDL cocoa is using a Private (non-public) API. Problematic part is here: SDL_cocoaevents.m @implementation NSApplication(SDL) - (void)setRunning { _running = 1; } @end Symbol _running in NSApplication is private and shouldn't be used. Any ideas what could I do about this?
author Sam Lantinga <slouken@libsdl.org>
date Sat, 12 Feb 2011 07:57:35 -0800
parents b0797947dd1c
children
rev   line source
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1 /*
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2 * happy.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 "common.h"
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9
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10 #define NUM_HAPPY_FACES 100 /* number of faces to draw */
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11 #define MILLESECONDS_PER_FRAME 16 /* about 60 frames per second */
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12 #define HAPPY_FACE_SIZE 32 /* width and height of happyface (pixels) */
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13
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14 static SDL_Texture *texture = 0; /* reference to texture holding happyface */
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15
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16 static struct
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17 {
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18 float x, y; /* position of happyface */
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19 float xvel, yvel; /* velocity of happyface */
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20 } faces[NUM_HAPPY_FACES];
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21
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22 /*
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23 Sets initial positions and velocities of happyfaces
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24 units of velocity are pixels per millesecond
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25 */
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26 void
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27 initializeHappyFaces()
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28 {
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29 int i;
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30 for (i = 0; i < NUM_HAPPY_FACES; i++) {
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31 faces[i].x = randomFloat(0.0f, SCREEN_WIDTH - HAPPY_FACE_SIZE);
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32 faces[i].y = randomFloat(0.0f, SCREEN_HEIGHT - HAPPY_FACE_SIZE);
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33 faces[i].xvel = randomFloat(-0.1f, 0.1f);
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34 faces[i].yvel = randomFloat(-0.1f, 0.1f);
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35 }
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36 }
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37
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38 void
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39 render(SDL_Renderer *renderer)
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40 {
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41
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42 int i;
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43 SDL_Rect srcRect;
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44 SDL_Rect dstRect;
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45
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46 /* setup boundaries for happyface bouncing */
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47 Uint16 maxx = SCREEN_WIDTH - HAPPY_FACE_SIZE;
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48 Uint16 maxy = SCREEN_HEIGHT - HAPPY_FACE_SIZE;
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49 Uint16 minx = 0;
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50 Uint16 miny = 0;
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51
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52 /* setup rects for drawing */
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53 srcRect.x = 0;
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54 srcRect.y = 0;
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55 srcRect.w = HAPPY_FACE_SIZE;
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56 srcRect.h = HAPPY_FACE_SIZE;
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57 dstRect.w = HAPPY_FACE_SIZE;
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58 dstRect.h = HAPPY_FACE_SIZE;
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59
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60 /* fill background in with black */
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61 SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
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62 SDL_RenderClear(renderer);
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63
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64 /*
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65 loop through all the happy faces:
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66 - update position
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67 - update velocity (if boundary is hit)
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68 - draw
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69 */
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70 for (i = 0; i < NUM_HAPPY_FACES; i++) {
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71 faces[i].x += faces[i].xvel * MILLESECONDS_PER_FRAME;
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72 faces[i].y += faces[i].yvel * MILLESECONDS_PER_FRAME;
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73 if (faces[i].x > maxx) {
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74 faces[i].x = maxx;
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75 faces[i].xvel = -faces[i].xvel;
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76 } else if (faces[i].y > maxy) {
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77 faces[i].y = maxy;
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78 faces[i].yvel = -faces[i].yvel;
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79 }
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80 if (faces[i].x < minx) {
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81 faces[i].x = minx;
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82 faces[i].xvel = -faces[i].xvel;
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83 } else if (faces[i].y < miny) {
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84 faces[i].y = miny;
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85 faces[i].yvel = -faces[i].yvel;
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86 }
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87 dstRect.x = faces[i].x;
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88 dstRect.y = faces[i].y;
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89 SDL_RenderCopy(renderer, texture, &srcRect, &dstRect);
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90 }
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91 /* update screen */
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92 SDL_RenderPresent(renderer);
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93
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94 }
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95
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96 /*
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97 loads the happyface graphic into a texture
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98 */
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99 void
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100 initializeTexture(SDL_Renderer *renderer)
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101 {
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102 SDL_Surface *bmp_surface;
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103 /* load the bmp */
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104 bmp_surface = SDL_LoadBMP("icon.bmp");
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105 if (bmp_surface == NULL) {
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106 fatalError("could not load bmp");
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107 }
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108 /* set white to transparent on the happyface */
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109 SDL_SetColorKey(bmp_surface, 1,
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110 SDL_MapRGB(bmp_surface->format, 255, 255, 255));
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111
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112 /* convert RGBA surface to texture */
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113 texture = SDL_CreateTextureFromSurface(renderer, bmp_surface);
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114 if (texture == 0) {
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115 fatalError("could not create texture");
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116 }
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117 SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
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118
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119 /* free up allocated memory */
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120 SDL_FreeSurface(bmp_surface);
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121 }
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122
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123 int
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124 main(int argc, char *argv[])
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125 {
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126
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127 SDL_Window *window;
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128 SDL_Renderer *renderer;
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129 Uint32 startFrame;
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130 Uint32 endFrame;
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131 Uint32 delay;
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132 int done;
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133
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134 /* initialize SDL */
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135 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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136 fatalError("Could not initialize SDL");
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137 }
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138 window = SDL_CreateWindow(NULL, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT,
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139 SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN |
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140 SDL_WINDOW_BORDERLESS);
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141
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142 renderer = SDL_CreateRenderer(window, -1, 0);
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143
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144 initializeTexture(renderer);
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145 initializeHappyFaces();
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146
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147 /* main loop */
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148 done = 0;
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149 while (!done) {
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150 startFrame = SDL_GetTicks();
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151 SDL_Event event;
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152 while (SDL_PollEvent(&event)) {
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153 if (event.type == SDL_QUIT) {
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154 done = 1;
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155 }
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156 }
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157 render(renderer);
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158 endFrame = SDL_GetTicks();
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159
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160 /* figure out how much time we have left, and then sleep */
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161 delay = MILLESECONDS_PER_FRAME - (endFrame - startFrame);
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162 if (delay < 0) {
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163 delay = 0;
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164 } else if (delay > MILLESECONDS_PER_FRAME) {
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165 delay = MILLESECONDS_PER_FRAME;
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166 }
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167 SDL_Delay(delay);
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168 }
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169
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170 /* cleanup */
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171 SDL_DestroyTexture(texture);
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172 /* shutdown SDL */
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173 SDL_Quit();
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174
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175 return 0;
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176
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177 }