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annotate test/testnative.c @ 3550:6b69c5def097

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Minor documentation fix
author Sam Lantinga <slouken@libsdl.org>
date Sat, 12 Dec 2009 20:30:25 +0000
parents 0267b8b1595c
children f638ded38b8a
rev   line source
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089a77aebb7d Added test program for SDL_CreateWindowFrom()
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1 /* Simple program: Create a native window and attach an SDL renderer */
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2
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3 #include "testnative.h"
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4
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5 #define WINDOW_W 640
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6 #define WINDOW_H 480
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7 #define NUM_SPRITES 100
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8 #define MAX_SPEED 1
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9
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10 static NativeWindowFactory *factories[] = {
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11 #ifdef TEST_NATIVE_WIN32
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12 &Win32WindowFactory,
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13 #endif
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14 #ifdef TEST_NATIVE_X11
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15 &X11WindowFactory,
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16 #endif
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17 #ifdef TEST_NATIVE_COCOA
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18 &CocoaWindowFactory,
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19 #endif
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20 NULL
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21 };
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22 static NativeWindowFactory *factory = NULL;
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23 static void *native_window;
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24 static SDL_Rect *positions, *velocities;
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25
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26 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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27 static void
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28 quit(int rc)
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29 {
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30 SDL_VideoQuit();
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31 if (native_window) {
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32 factory->DestroyNativeWindow(native_window);
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33 }
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34 exit(rc);
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35 }
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36
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37 SDL_TextureID
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38 LoadSprite(SDL_WindowID window, char *file)
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39 {
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40 SDL_Surface *temp;
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41 SDL_TextureID sprite;
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42
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43 /* Load the sprite image */
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44 temp = SDL_LoadBMP(file);
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45 if (temp == NULL) {
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46 fprintf(stderr, "Couldn't load %s: %s", file, SDL_GetError());
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47 return 0;
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48 }
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49
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50 /* Set transparent pixel as the pixel at (0,0) */
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51 if (temp->format->palette) {
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52 SDL_SetColorKey(temp, SDL_SRCCOLORKEY, *(Uint8 *) temp->pixels);
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53 }
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54
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55 /* Create textures from the image */
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56 SDL_SelectRenderer(window);
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57 sprite = SDL_CreateTextureFromSurface(0, temp);
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58 if (!sprite) {
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59 fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
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60 SDL_FreeSurface(temp);
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61 return 0;
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62 }
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63 SDL_FreeSurface(temp);
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64
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65 /* We're ready to roll. :) */
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66 return sprite;
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67 }
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68
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69 void
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70 MoveSprites(SDL_WindowID window, SDL_TextureID sprite)
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71 {
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72 int i, n;
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73 int window_w, window_h;
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74 int sprite_w, sprite_h;
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75 SDL_Rect *position, *velocity;
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76
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77 SDL_SelectRenderer(window);
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78
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79 /* Query the sizes */
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80 SDL_GetWindowSize(window, &window_w, &window_h);
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81 SDL_QueryTexture(sprite, NULL, NULL, &sprite_w, &sprite_h);
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82
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83 /* Move the sprite, bounce at the wall, and draw */
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84 n = 0;
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85 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
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86 SDL_RenderRect(NULL);
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87 for (i = 0; i < NUM_SPRITES; ++i) {
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88 position = &positions[i];
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89 velocity = &velocities[i];
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90 position->x += velocity->x;
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91 if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
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92 velocity->x = -velocity->x;
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93 position->x += velocity->x;
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94 }
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95 position->y += velocity->y;
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96 if ((position->y < 0) || (position->y >= (window_h - sprite_h))) {
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97 velocity->y = -velocity->y;
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98 position->y += velocity->y;
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99 }
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100
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101 /* Blit the sprite onto the screen */
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102 SDL_RenderCopy(sprite, NULL, position);
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103 }
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104
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105 /* Update the screen! */
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106 SDL_RenderPresent();
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107 }
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108
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109 int
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110 main(int argc, char *argv[])
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111 {
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112 int i, done;
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113 const char *driver;
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114 SDL_WindowID window;
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115 SDL_TextureID sprite;
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116 int window_w, window_h;
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117 int sprite_w, sprite_h;
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118 SDL_Event event;
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119
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120 if (SDL_VideoInit(NULL, 0) < 0) {
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121 fprintf(stderr, "Couldn't initialize SDL video: %s\n",
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122 SDL_GetError());
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123 exit(1);
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124 }
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125 driver = SDL_GetCurrentVideoDriver();
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126
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127 /* Find a native window driver and create a native window */
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128 for (i = 0; factories[i]; ++i) {
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129 if (SDL_strcmp(driver, factories[i]->tag) == 0) {
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130 factory = factories[i];
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131 break;
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132 }
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133 }
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134 if (!factory) {
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135 fprintf(stderr, "Couldn't find native window code for %s driver\n",
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136 driver);
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137 quit(2);
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138 }
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139 printf("Creating native window for %s driver\n", driver);
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140 native_window = factory->CreateNativeWindow(WINDOW_W, WINDOW_H);
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141 if (!native_window) {
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142 fprintf(stderr, "Couldn't create native window\n");
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143 quit(3);
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144 }
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145 window = SDL_CreateWindowFrom(native_window);
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146 if (!window) {
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147 fprintf(stderr, "Couldn't create SDL window: %s\n", SDL_GetError());
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148 quit(4);
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149 }
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150 SDL_SetWindowTitle(window, "SDL Native Window Test");
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151
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152 /* Create the renderer */
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153 if (SDL_CreateRenderer(window, -1, 0) < 0) {
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154 fprintf(stderr, "Couldn't create renderer: %s\n", SDL_GetError());
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155 quit(5);
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156 }
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157
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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158 /* Clear the window, load the sprite and go! */
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159 SDL_SelectRenderer(window);
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160 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
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161 SDL_RenderRect(NULL);
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162
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163 sprite = LoadSprite(window, "icon.bmp");
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164 if (!sprite) {
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165 quit(6);
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166 }
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167
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168 /* Allocate memory for the sprite info */
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169 SDL_GetWindowSize(window, &window_w, &window_h);
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170 SDL_QueryTexture(sprite, NULL, NULL, &sprite_w, &sprite_h);
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171 positions = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
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172 velocities = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
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173 if (!positions || !velocities) {
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174 fprintf(stderr, "Out of memory!\n");
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175 quit(2);
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176 }
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177 srand(time(NULL));
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178 for (i = 0; i < NUM_SPRITES; ++i) {
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179 positions[i].x = rand() % (window_w - sprite_w);
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180 positions[i].y = rand() % (window_h - sprite_h);
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181 positions[i].w = sprite_w;
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182 positions[i].h = sprite_h;
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183 velocities[i].x = 0;
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184 velocities[i].y = 0;
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185 while (!velocities[i].x && !velocities[i].y) {
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186 velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
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187 velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
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188 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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189 }
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190
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191 /* Main render loop */
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192 done = 0;
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193 while (!done) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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194 /* Check for events */
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195 while (SDL_PollEvent(&event)) {
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196 switch (event.type) {
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197 case SDL_WINDOWEVENT:
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198 switch (event.window.event) {
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199 case SDL_WINDOWEVENT_EXPOSED:
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200 SDL_SelectRenderer(event.window.windowID);
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201 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
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202 SDL_RenderRect(NULL);
3057
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203 break;
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204 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
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diff changeset
205 break;
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diff changeset
206 case SDL_QUIT:
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207 done = 1;
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diff changeset
208 break;
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diff changeset
209 default:
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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210 break;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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diff changeset
211 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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diff changeset
212 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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diff changeset
213 MoveSprites(window, sprite);
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214 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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parents:
diff changeset
215
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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diff changeset
216 quit(0);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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219 /* vi: set ts=4 sw=4 expandtab: */