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annotate test/testspriteminimal.c @ 4425:a3e71b957215

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Fixed bug #961 Kalle Olavi Niemitalo 2010-02-28 09:15:50 PST It seems the SDLK_LMETA and SDLK_RMETA constants have been removed from SDL 1.3. I grepped for them in the SDL source tree and these were the only hits: ./include/SDL_compat.h:230:#define SDLK_LSUPER SDLK_LMETA ./include/SDL_compat.h:231:#define SDLK_RSUPER SDLK_RMETA ./src/video/bwindow/SDL_BWin.h:194: keymap[0x66] = SDLK_LMETA; ./src/video/bwindow/SDL_BWin.h:195: keymap[0x67] = SDLK_RMETA; I don't know how compatible SDL 1.3 is supposed to be with applications designed for SDL 1.2. However, as you can see, SDL itself is still trying to use the removed constants, and that is clearly a bug. Because SDL_compat.h defines KMOD_LMETA as KMOD_LGUI, I suppose it should also define SDLK_LMETA as SDLK_LGUI, and SDLK_RMETA likewise.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 09 Mar 2010 06:07:48 +0000
parents 64ce267332c6
children d2247eb39fab
rev   line source
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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 <stdio.h>
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5 #include <time.h>
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6
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7 #include "SDL_events.h"
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8 #include "SDL_video.h"
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9
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10 #define WINDOW_WIDTH 640
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11 #define WINDOW_HEIGHT 480
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12 #define NUM_SPRITES 100
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13 #define MAX_SPEED 1
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14
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15 static SDL_Texture *sprite;
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16 static SDL_Rect positions[NUM_SPRITES];
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17 static SDL_Rect velocities[NUM_SPRITES];
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18 static int sprite_w, sprite_h;
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19
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20 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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21 static void
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22 quit(int rc)
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23 {
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24 exit(rc);
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25 }
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26
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27 int
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28 LoadSprite(char *file)
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29 {
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30 SDL_Surface *temp;
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31
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32 /* Load the sprite image */
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33 temp = SDL_LoadBMP(file);
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34 if (temp == NULL) {
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35 fprintf(stderr, "Couldn't load %s: %s", file, SDL_GetError());
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36 return (-1);
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37 }
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38 sprite_w = temp->w;
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39 sprite_h = temp->h;
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40
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41 /* Set transparent pixel as the pixel at (0,0) */
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42 if (temp->format->palette) {
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43 SDL_SetColorKey(temp, SDL_TRUE, *(Uint8 *) temp->pixels);
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44 } else {
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45 switch (temp->format->BitsPerPixel) {
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46 case 15:
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47 SDL_SetColorKey(temp, SDL_TRUE,
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48 (*(Uint16 *) temp->pixels) & 0x00007FFF);
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49 break;
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50 case 16:
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51 SDL_SetColorKey(temp, SDL_TRUE, *(Uint16 *) temp->pixels);
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52 break;
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53 case 24:
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54 SDL_SetColorKey(temp, SDL_TRUE,
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55 (*(Uint32 *) temp->pixels) & 0x00FFFFFF);
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56 break;
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57 case 32:
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58 SDL_SetColorKey(temp, SDL_TRUE, *(Uint32 *) temp->pixels);
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59 break;
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60 }
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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 sprite = SDL_CreateTextureFromSurface(0, temp);
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65 if (!sprite) {
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66 SDL_SetColorKey(temp, 0, 0);
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67 sprite = SDL_CreateTextureFromSurface(0, temp);
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68 }
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69 if (!sprite) {
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70 fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
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71 SDL_FreeSurface(temp);
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72 return (-1);
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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_Window * window, SDL_Texture * sprite)
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82 {
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83 int i;
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84 int window_w = WINDOW_WIDTH;
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85 int window_h = WINDOW_HEIGHT;
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86 SDL_Rect *position, *velocity;
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87
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88 /* Draw a gray background */
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89 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
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90 SDL_RenderClear();
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91
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92 /* Move the sprite, bounce at the wall, and draw */
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93 for (i = 0; i < NUM_SPRITES; ++i) {
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94 position = &positions[i];
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95 velocity = &velocities[i];
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96 position->x += velocity->x;
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97 if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
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98 velocity->x = -velocity->x;
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99 position->x += velocity->x;
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100 }
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101 position->y += velocity->y;
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102 if ((position->y < 0) || (position->y >= (window_h - sprite_h))) {
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103 velocity->y = -velocity->y;
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104 position->y += velocity->y;
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105 }
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106
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107 /* Blit the sprite onto the screen */
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108 SDL_RenderCopy(sprite, NULL, position);
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109 }
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110
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111 /* Update the screen! */
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112 SDL_RenderPresent();
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113 }
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114
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115 int
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116 main(int argc, char *argv[])
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117 {
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118 SDL_Window *window;
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119 int i, done;
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120 SDL_Event event;
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121
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122 window = SDL_CreateWindow("Happy Smileys",
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123 SDL_WINDOWPOS_UNDEFINED,
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124 SDL_WINDOWPOS_UNDEFINED,
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125 WINDOW_WIDTH, WINDOW_HEIGHT,
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126 SDL_WINDOW_SHOWN);
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127 if (!window) {
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128 quit(2);
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129 }
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130
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131 if (LoadSprite("icon.bmp") < 0) {
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132 quit(2);
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133 }
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134
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135 /* Initialize the sprite positions */
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136 srand(time(NULL));
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137 for (i = 0; i < NUM_SPRITES; ++i) {
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138 positions[i].x = rand() % (WINDOW_WIDTH - sprite_w);
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139 positions[i].y = rand() % (WINDOW_HEIGHT - sprite_h);
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140 positions[i].w = sprite_w;
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141 positions[i].h = sprite_h;
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142 velocities[i].x = 0;
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143 velocities[i].y = 0;
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144 while (!velocities[i].x && !velocities[i].y) {
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145 velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
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146 velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
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147 }
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148 }
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149
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150 /* Main render loop */
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151 done = 0;
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152 while (!done) {
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153 /* Check for events */
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154 while (SDL_PollEvent(&event)) {
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155 if (event.type == SDL_QUIT || event.type == SDL_KEYDOWN) {
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156 done = 1;
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157 }
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158 }
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159 MoveSprites(window, sprite);
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160 }
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161
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162 quit(0);
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163 }
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164
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165 /* vi: set ts=4 sw=4 expandtab: */