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annotate test/testnative.c @ 5167:97423d858a1a

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Added an intro to the features and goals of the 2D rendering API.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 03 Feb 2011 10:03:55 -0800
parents e8916fe9cfc8
children
rev   line source
3057
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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diff changeset
1 /* Simple program: Create a native window and attach an SDL renderer */
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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2
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3 #include <stdio.h>
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4
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5 #include "testnative.h"
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6
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7 #define WINDOW_W 640
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8 #define WINDOW_H 480
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9 #define NUM_SPRITES 100
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10 #define MAX_SPEED 1
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11
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12 static NativeWindowFactory *factories[] = {
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e8916fe9cfc8 Fixed bug #925
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13 #ifdef TEST_NATIVE_WINDOWS
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14 &WindowsWindowFactory,
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15 #endif
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16 #ifdef TEST_NATIVE_X11
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17 &X11WindowFactory,
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18 #endif
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19 #ifdef TEST_NATIVE_COCOA
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20 &CocoaWindowFactory,
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21 #endif
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22 NULL
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23 };
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24 static NativeWindowFactory *factory = NULL;
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25 static void *native_window;
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26 static SDL_Rect *positions, *velocities;
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27
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28 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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29 static void
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30 quit(int rc)
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31 {
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32 SDL_VideoQuit();
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33 if (native_window) {
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34 factory->DestroyNativeWindow(native_window);
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35 }
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36 exit(rc);
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37 }
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38
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39 SDL_Texture *
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40 LoadSprite(SDL_Window * window, char *file)
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41 {
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42 SDL_Surface *temp;
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43 SDL_Texture *sprite;
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44
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45 /* Load the sprite image */
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46 temp = SDL_LoadBMP(file);
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47 if (temp == NULL) {
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48 fprintf(stderr, "Couldn't load %s: %s", file, SDL_GetError());
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49 return 0;
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50 }
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51
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52 /* Set transparent pixel as the pixel at (0,0) */
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53 if (temp->format->palette) {
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54 SDL_SetColorKey(temp, SDL_SRCCOLORKEY, *(Uint8 *) temp->pixels);
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55 }
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56
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57 /* Create textures from the image */
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58 SDL_SelectRenderer(window);
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59 sprite = SDL_CreateTextureFromSurface(0, temp);
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60 if (!sprite) {
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61 fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
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62 SDL_FreeSurface(temp);
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63 return 0;
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64 }
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65 SDL_FreeSurface(temp);
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66
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67 /* We're ready to roll. :) */
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68 return sprite;
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69 }
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70
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71 void
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72 MoveSprites(SDL_Window * window, SDL_Texture * sprite)
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73 {
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74 int i, n;
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75 int window_w, window_h;
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76 int sprite_w, sprite_h;
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77 SDL_Rect *position, *velocity;
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78
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79 SDL_SelectRenderer(window);
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80
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81 /* Query the sizes */
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82 SDL_GetWindowSize(window, &window_w, &window_h);
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83 SDL_QueryTexture(sprite, NULL, NULL, &sprite_w, &sprite_h);
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84
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85 /* Move the sprite, bounce at the wall, and draw */
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86 n = 0;
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87 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
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88 SDL_RenderClear();
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89 for (i = 0; i < NUM_SPRITES; ++i) {
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90 position = &positions[i];
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91 velocity = &velocities[i];
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92 position->x += velocity->x;
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93 if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
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94 velocity->x = -velocity->x;
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95 position->x += velocity->x;
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96 }
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97 position->y += velocity->y;
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98 if ((position->y < 0) || (position->y >= (window_h - sprite_h))) {
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99 velocity->y = -velocity->y;
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100 position->y += velocity->y;
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101 }
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102
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103 /* Blit the sprite onto the screen */
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104 SDL_RenderCopy(sprite, NULL, position);
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105 }
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106
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107 /* Update the screen! */
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108 SDL_RenderPresent();
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109 }
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110
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111 int
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112 main(int argc, char *argv[])
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113 {
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114 int i, done;
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115 const char *driver;
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116 SDL_Window *window;
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117 SDL_Texture *sprite;
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118 int window_w, window_h;
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119 int sprite_w, sprite_h;
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120 SDL_Event event;
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121
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122 if (SDL_VideoInit(NULL, 0) < 0) {
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123 fprintf(stderr, "Couldn't initialize SDL video: %s\n",
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124 SDL_GetError());
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125 exit(1);
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126 }
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127 driver = SDL_GetCurrentVideoDriver();
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128
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129 /* Find a native window driver and create a native window */
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130 for (i = 0; factories[i]; ++i) {
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131 if (SDL_strcmp(driver, factories[i]->tag) == 0) {
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132 factory = factories[i];
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133 break;
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134 }
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135 }
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136 if (!factory) {
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137 fprintf(stderr, "Couldn't find native window code for %s driver\n",
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138 driver);
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139 quit(2);
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140 }
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141 printf("Creating native window for %s driver\n", driver);
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142 native_window = factory->CreateNativeWindow(WINDOW_W, WINDOW_H);
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143 if (!native_window) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
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diff changeset
144 fprintf(stderr, "Couldn't create native window\n");
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
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diff changeset
145 quit(3);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
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diff changeset
147 window = SDL_CreateWindowFrom(native_window);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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diff changeset
148 if (!window) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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diff changeset
149 fprintf(stderr, "Couldn't create SDL window: %s\n", SDL_GetError());
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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150 quit(4);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 SDL_SetWindowTitle(window, "SDL Native Window Test");
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 /* Create the renderer */
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 if (SDL_CreateRenderer(window, -1, 0) < 0) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156 fprintf(stderr, "Couldn't create renderer: %s\n", SDL_GetError());
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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diff changeset
157 quit(5);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160 /* Clear the window, load the sprite and go! */
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 SDL_SelectRenderer(window);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
163 SDL_RenderClear();
3057
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 sprite = LoadSprite(window, "icon.bmp");
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 if (!sprite) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167 quit(6);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 /* Allocate memory for the sprite info */
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171 SDL_GetWindowSize(window, &window_w, &window_h);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 SDL_QueryTexture(sprite, NULL, NULL, &sprite_w, &sprite_h);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 positions = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 velocities = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 if (!positions || !velocities) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 fprintf(stderr, "Out of memory!\n");
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177 quit(2);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 srand(time(NULL));
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180 for (i = 0; i < NUM_SPRITES; ++i) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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parents:
diff changeset
181 positions[i].x = rand() % (window_w - sprite_w);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 positions[i].y = rand() % (window_h - sprite_h);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
183 positions[i].w = sprite_w;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
184 positions[i].h = sprite_h;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
185 velocities[i].x = 0;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
186 velocities[i].y = 0;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
187 while (!velocities[i].x && !velocities[i].y) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
188 velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
189 velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
191 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
192
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
193 /* Main render loop */
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
194 done = 0;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
195 while (!done) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
196 /* Check for events */
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
197 while (SDL_PollEvent(&event)) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
198 switch (event.type) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
199 case SDL_WINDOWEVENT:
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
200 switch (event.window.event) {
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
201 case SDL_WINDOWEVENT_EXPOSED:
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
202 SDL_SelectRenderer(event.window.windowID);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
204 SDL_RenderClear();
3057
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
205 break;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
206 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
207 break;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
208 case SDL_QUIT:
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
209 done = 1;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210 break;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211 default:
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212 break;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 MoveSprites(window, sprite);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 }
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 quit(0);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219 }
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
220
089a77aebb7d Added test program for SDL_CreateWindowFrom()
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221 /* vi: set ts=4 sw=4 expandtab: */