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annotate test/testsprite2.c @ 1724:6c63fc2bd986 SDL-1.3

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Proof of concept done - Win32 GDI implementation mostly complete.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 06 Jul 2006 07:17:11 +0000
parents 931d111e737a
children 98a3207ddde8
rev   line source
1706
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parents:
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1 /* Simple program: Move N sprites around on the screen as fast as possible */
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2
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3 #include <stdlib.h>
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4 #include <time.h>
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5
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6 #include "SDL.h"
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7
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8 #define NUM_WINDOWS 4
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9 #define WINDOW_W 640
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10 #define WINDOW_H 480
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11 #define NUM_SPRITES 100
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12 #define MAX_SPEED 1
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13 #define BACKGROUND 0x00FFFFFF
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14
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15 static int num_windows;
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16 static int num_sprites;
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17 static SDL_WindowID *windows;
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18 static SDL_TextureID *sprites;
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19 static SDL_Rect *positions;
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20 static SDL_Rect *velocities;
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21 static int sprite_w, sprite_h;
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22
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23 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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24 static void
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25 quit(int rc)
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26 {
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27 if (windows) {
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28 SDL_free(windows);
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29 }
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30 if (sprites) {
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31 SDL_free(sprites);
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32 }
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33 if (positions) {
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34 SDL_free(positions);
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35 }
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36 if (velocities) {
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37 SDL_free(velocities);
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38 }
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39 SDL_Quit();
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40 exit(rc);
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41 }
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42
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43 int
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44 LoadSprite(char *file)
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45 {
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46 int i;
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47 SDL_Surface *temp;
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48
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49 /* Load the sprite image */
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50 temp = SDL_LoadBMP(file);
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51 if (temp == NULL) {
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52 fprintf(stderr, "Couldn't load %s: %s", file, SDL_GetError());
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53 return (-1);
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54 }
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55 sprite_w = temp->w;
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56 sprite_h = temp->h;
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57
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58 /* Set transparent pixel as the pixel at (0,0) */
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59 if (temp->format->palette) {
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60 SDL_SetColorKey(temp, SDL_SRCCOLORKEY, *(Uint8 *) temp->pixels);
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61 }
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62
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63 /* Create textures from the image */
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64 for (i = 0; i < num_windows; ++i) {
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65 SDL_SelectRenderer(windows[i]);
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66 sprites[i] =
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67 SDL_CreateTextureFromSurface(0, SDL_TextureAccess_Remote, temp);
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68 if (!sprites[i]) {
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69 fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
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70 SDL_FreeSurface(temp);
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71 return (-1);
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72 }
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73 }
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74 SDL_FreeSurface(temp);
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75
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76 /* We're ready to roll. :) */
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77 return (0);
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78 }
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79
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80 void
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81 MoveSprites(SDL_WindowID window, SDL_TextureID sprite)
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82 {
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83 int i, n;
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84 int window_w, window_h;
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85 SDL_Rect area, *position, *velocity;
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86
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87 SDL_SelectRenderer(window);
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88
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89 /* Query the sizes */
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90 SDL_GetWindowSize(window, &window_w, &window_h);
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91
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92 /* Move the sprite, bounce at the wall, and draw */
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93 n = 0;
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94 for (i = 0; i < num_sprites; ++i) {
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95 position = &positions[i];
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96 SDL_RenderFill(position, BACKGROUND);
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97 }
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98 for (i = 0; i < num_sprites; ++i) {
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99 position = &positions[i];
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100 velocity = &velocities[i];
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101 position->x += velocity->x;
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102 if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
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103 velocity->x = -velocity->x;
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104 position->x += velocity->x;
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105 }
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106 position->y += velocity->y;
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107 if ((position->y < 0) || (position->y >= (window_h - sprite_w))) {
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108 velocity->y = -velocity->y;
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109 position->y += velocity->y;
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110 }
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111
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112 /* Blit the sprite onto the screen */
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113 SDL_RenderCopy(sprite, NULL, position, SDL_TextureBlendMode_Mask,
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114 SDL_TextureScaleMode_None);
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115 }
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116
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117 /* Update the screen! */
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118 SDL_RenderPresent();
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119 }
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120
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121 int
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122 main(int argc, char *argv[])
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123 {
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124 int window_w, window_h;
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125 int i, done;
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126 SDL_Event event;
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127 Uint32 then, now, frames;
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128
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129 /* Initialize SDL */
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130 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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131 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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132 return (1);
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133 }
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134
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135 num_windows = NUM_WINDOWS;
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136 num_sprites = NUM_SPRITES;
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137 window_w = WINDOW_W;
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138 window_h = WINDOW_H;
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139 while (argc > 1) {
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parents:
diff changeset
140 --argc;
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parents:
diff changeset
141 if (strcmp(argv[argc - 1], "-width") == 0) {
1577404809f0 Added a multi-window version of testsprite using the new API.
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parents:
diff changeset
142 window_w = atoi(argv[argc]);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
143 --argc;
1577404809f0 Added a multi-window version of testsprite using the new API.
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parents:
diff changeset
144 } else if (strcmp(argv[argc - 1], "-height") == 0) {
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parents:
diff changeset
145 window_h = atoi(argv[argc]);
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parents:
diff changeset
146 --argc;
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parents:
diff changeset
147 } else if (isdigit(argv[argc][0])) {
1577404809f0 Added a multi-window version of testsprite using the new API.
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parents:
diff changeset
148 num_sprites = atoi(argv[argc]);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149 } else {
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parents:
diff changeset
150 fprintf(stderr,
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parents:
diff changeset
151 "Usage: %s [-width] [-height] [numsprites]\n", argv[0]);
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parents:
diff changeset
152 quit(1);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155
1707
57ce47f033a5 Passing NULL to SDL_SetDisplayMode() will set the desktop mode.
Sam Lantinga <slouken@libsdl.org>
parents: 1706
diff changeset
156 /* Set the desktop mode, we don't care what it is */
57ce47f033a5 Passing NULL to SDL_SetDisplayMode() will set the desktop mode.
Sam Lantinga <slouken@libsdl.org>
parents: 1706
diff changeset
157 if (SDL_SetDisplayMode(NULL) < 0) {
57ce47f033a5 Passing NULL to SDL_SetDisplayMode() will set the desktop mode.
Sam Lantinga <slouken@libsdl.org>
parents: 1706
diff changeset
158 fprintf(stderr, "Couldn't set display mode: %s\n", SDL_GetError());
57ce47f033a5 Passing NULL to SDL_SetDisplayMode() will set the desktop mode.
Sam Lantinga <slouken@libsdl.org>
parents: 1706
diff changeset
159 quit(2);
1706
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parents:
diff changeset
160 }
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parents:
diff changeset
161
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 /* Create the windows, initialize the renderers, and load the textures */
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parents:
diff changeset
163 windows = (SDL_WindowID *) SDL_malloc(num_windows * sizeof(*windows));
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parents:
diff changeset
164 sprites = (SDL_TextureID *) SDL_malloc(num_windows * sizeof(*sprites));
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 if (!windows || !sprites) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 fprintf(stderr, "Out of memory!\n");
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167 quit(2);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169 for (i = 0; i < num_windows; ++i) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 char title[32];
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parents:
diff changeset
171
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 SDL_snprintf(title, sizeof(title), "testsprite %d", i + 1);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 windows[i] =
1724
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
174 SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED,
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
175 SDL_WINDOWPOS_UNDEFINED, window_w, window_h,
1706
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 SDL_WINDOW_SHOWN);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177 if (!windows[i]) {
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parents:
diff changeset
178 fprintf(stderr, "Couldn't create window: %s\n", SDL_GetError());
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parents:
diff changeset
179 quit(2);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 if (SDL_CreateRenderer(windows[i], -1, 0) < 0) {
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parents:
diff changeset
183 fprintf(stderr, "Couldn't create renderer: %s\n", SDL_GetError());
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parents:
diff changeset
184 quit(2);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
185 }
1724
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
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parents: 1712
diff changeset
186 SDL_RenderFill(NULL, BACKGROUND);
1706
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parents:
diff changeset
187 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
188 if (LoadSprite("icon.bmp") < 0) {
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parents:
diff changeset
189 quit(2);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
191
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
192 /* Allocate memory for the sprite info */
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
193 positions = (SDL_Rect *) SDL_malloc(num_sprites * sizeof(SDL_Rect));
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
194 velocities = (SDL_Rect *) SDL_malloc(num_sprites * sizeof(SDL_Rect));
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
195 if (!positions || !velocities) {
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
196 fprintf(stderr, "Out of memory!\n");
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
197 quit(2);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
198 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
199 srand(time(NULL));
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
200 for (i = 0; i < num_sprites; ++i) {
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
201 positions[i].x = rand() % (window_w - sprite_w);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
202 positions[i].y = rand() % (window_h - sprite_h);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203 positions[i].w = sprite_w;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204 positions[i].h = sprite_h;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
205 velocities[i].x = 0;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
206 velocities[i].y = 0;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
207 while (!velocities[i].x && !velocities[i].y) {
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
208 velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
209 velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 /* Loop, blitting sprites and waiting for a keystroke */
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214 frames = 0;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 then = SDL_GetTicks();
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 done = 0;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 while (!done) {
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218 /* Check for events */
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219 ++frames;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
220 while (SDL_PollEvent(&event)) {
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221 switch (event.type) {
1724
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
222 case SDL_WINDOWEVENT:
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
223 switch (event.window.event) {
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
224 case SDL_WINDOWEVENT_EXPOSED:
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
225 SDL_SelectRenderer(event.window.windowID);
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
226 SDL_RenderFill(NULL, BACKGROUND);
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
227 break;
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
228 case SDL_WINDOWEVENT_CLOSE:
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
229 done = 1;
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
230 break;
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
231 }
6c63fc2bd986 Proof of concept done - Win32 GDI implementation mostly complete.
Sam Lantinga <slouken@libsdl.org>
parents: 1712
diff changeset
232 break;
1706
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 case SDL_KEYDOWN:
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 /* Any keypress quits the app... */
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 case SDL_QUIT:
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236 done = 1;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 break;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 default:
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 break;
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 for (i = 0; i < num_windows; ++i) {
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 MoveSprites(windows[i], sprites[i]);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 /* Print out some timing information */
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 now = SDL_GetTicks();
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 if (now > then) {
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250 printf("%2.2f frames per second\n",
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 ((double) frames * 1000) / (now - then));
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 quit(0);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
254 }
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256 /* vi: set ts=4 sw=4 expandtab: */