slouken@1895
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1 |
/* Simple program: Move N sprites around on the screen as fast as possible */
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slouken@1895
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2 |
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slouken@1895
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3 |
#include <stdlib.h>
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slouken@1907
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4 |
#include <stdio.h>
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slouken@1895
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5 |
#include <time.h>
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slouken@1895
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6 |
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slouken@1914
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7 |
#include "common.h"
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slouken@1895
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8 |
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slouken@1895
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9 |
#define NUM_SPRITES 100
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slouken@1895
|
10 |
#define MAX_SPEED 1
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slouken@1895
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11 |
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slouken@1914
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12 |
static CommonState *state;
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slouken@1895
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13 |
static int num_sprites;
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slouken@3685
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14 |
static SDL_Texture **sprites;
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slouken@1985
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15 |
static SDL_bool cycle_color;
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slouken@1985
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16 |
static SDL_bool cycle_alpha;
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slouken@1985
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17 |
static int cycle_direction = 1;
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slouken@1985
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18 |
static int current_alpha = 0;
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slouken@1985
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19 |
static int current_color = 0;
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slouken@1895
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20 |
static SDL_Rect *positions;
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slouken@1895
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21 |
static SDL_Rect *velocities;
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slouken@1895
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22 |
static int sprite_w, sprite_h;
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sunnysachanandani@4601
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23 |
static SDL_BlendMode blendMode = SDL_BLENDMODE_MASK;
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slouken@1965
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24 |
static SDL_TextureScaleMode scaleMode = SDL_TEXTURESCALEMODE_NONE;
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slouken@1895
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25 |
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slouken@1895
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26 |
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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slouken@1895
|
27 |
static void
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slouken@1895
|
28 |
quit(int rc)
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slouken@1895
|
29 |
{
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slouken@1895
|
30 |
if (sprites) {
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slouken@1895
|
31 |
SDL_free(sprites);
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slouken@1895
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32 |
}
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slouken@1895
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33 |
if (positions) {
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slouken@1895
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34 |
SDL_free(positions);
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slouken@1895
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35 |
}
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slouken@1895
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36 |
if (velocities) {
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slouken@1895
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37 |
SDL_free(velocities);
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slouken@1895
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38 |
}
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slouken@1914
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39 |
CommonQuit(state);
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slouken@1895
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40 |
exit(rc);
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slouken@1895
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41 |
}
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slouken@1895
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42 |
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slouken@1895
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43 |
int
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slouken@1895
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44 |
LoadSprite(char *file)
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slouken@1895
|
45 |
{
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slouken@1895
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46 |
int i;
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slouken@1895
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47 |
SDL_Surface *temp;
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slouken@1895
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48 |
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slouken@1895
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49 |
/* Load the sprite image */
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slouken@1895
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50 |
temp = SDL_LoadBMP(file);
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slouken@1895
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51 |
if (temp == NULL) {
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slouken@1895
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52 |
fprintf(stderr, "Couldn't load %s: %s", file, SDL_GetError());
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slouken@1895
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53 |
return (-1);
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slouken@1895
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54 |
}
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slouken@1895
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55 |
sprite_w = temp->w;
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slouken@1895
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56 |
sprite_h = temp->h;
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slouken@1895
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57 |
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slouken@1895
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58 |
/* Set transparent pixel as the pixel at (0,0) */
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slouken@1895
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59 |
if (temp->format->palette) {
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slouken@3560
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60 |
SDL_SetColorKey(temp, 1, *(Uint8 *) temp->pixels);
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lestat@3183
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61 |
} else {
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lestat@3183
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62 |
switch (temp->format->BitsPerPixel) {
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lestat@3183
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63 |
case 15:
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slouken@3560
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64 |
SDL_SetColorKey(temp, 1, (*(Uint16 *) temp->pixels) & 0x00007FFF);
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lestat@3183
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break;
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lestat@3183
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66 |
case 16:
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slouken@3560
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SDL_SetColorKey(temp, 1, *(Uint16 *) temp->pixels);
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lestat@3183
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68 |
break;
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lestat@3183
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69 |
case 24:
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slouken@3560
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70 |
SDL_SetColorKey(temp, 1, (*(Uint32 *) temp->pixels) & 0x00FFFFFF);
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lestat@3183
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71 |
break;
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lestat@3183
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72 |
case 32:
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slouken@3560
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SDL_SetColorKey(temp, 1, *(Uint32 *) temp->pixels);
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lestat@3183
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74 |
break;
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lestat@3183
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75 |
}
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slouken@1895
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76 |
}
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slouken@1895
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77 |
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slouken@1895
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/* Create textures from the image */
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slouken@1914
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for (i = 0; i < state->num_windows; ++i) {
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slouken@1914
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80 |
SDL_SelectRenderer(state->windows[i]);
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slouken@2222
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81 |
sprites[i] = SDL_CreateTextureFromSurface(0, temp);
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slouken@1895
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82 |
if (!sprites[i]) {
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slouken@3285
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SDL_SetColorKey(temp, 0, 0);
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slouken@3285
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sprites[i] = SDL_CreateTextureFromSurface(0, temp);
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slouken@3285
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}
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slouken@3285
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if (!sprites[i]) {
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slouken@1895
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fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
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slouken@1895
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88 |
SDL_FreeSurface(temp);
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slouken@1895
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89 |
return (-1);
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slouken@1895
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90 |
}
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slouken@1985
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91 |
SDL_SetTextureBlendMode(sprites[i], blendMode);
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slouken@1985
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92 |
SDL_SetTextureScaleMode(sprites[i], scaleMode);
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slouken@1895
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}
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slouken@1895
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94 |
SDL_FreeSurface(temp);
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slouken@1895
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slouken@1895
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96 |
/* We're ready to roll. :) */
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slouken@1895
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97 |
return (0);
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slouken@1895
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98 |
}
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slouken@1895
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99 |
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slouken@1895
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100 |
void
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slouken@3685
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101 |
MoveSprites(SDL_Window * window, SDL_Texture * sprite)
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slouken@1895
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102 |
{
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slouken@1895
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103 |
int i, n;
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slouken@1895
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104 |
int window_w, window_h;
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slouken@3265
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SDL_Rect temp;
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slouken@2783
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SDL_Rect *position, *velocity;
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slouken@1895
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slouken@1895
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108 |
SDL_SelectRenderer(window);
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slouken@1895
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slouken@1895
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110 |
/* Query the sizes */
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slouken@1895
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111 |
SDL_GetWindowSize(window, &window_w, &window_h);
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slouken@1895
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112 |
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slouken@1985
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113 |
/* Cycle the color and alpha, if desired */
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slouken@1985
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114 |
if (cycle_color) {
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slouken@1985
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115 |
current_color += cycle_direction;
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slouken@1985
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116 |
if (current_color < 0) {
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slouken@1985
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117 |
current_color = 0;
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slouken@1985
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118 |
cycle_direction = -cycle_direction;
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slouken@1985
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119 |
}
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slouken@1985
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120 |
if (current_color > 255) {
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slouken@1985
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121 |
current_color = 255;
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slouken@1985
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122 |
cycle_direction = -cycle_direction;
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slouken@1985
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123 |
}
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slouken@1985
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124 |
SDL_SetTextureColorMod(sprite, 255, (Uint8) current_color,
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slouken@1985
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125 |
(Uint8) current_color);
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slouken@1985
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126 |
}
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slouken@1985
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127 |
if (cycle_alpha) {
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slouken@1985
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128 |
current_alpha += cycle_direction;
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slouken@1985
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129 |
if (current_alpha < 0) {
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slouken@1985
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130 |
current_alpha = 0;
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slouken@1985
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131 |
cycle_direction = -cycle_direction;
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slouken@1985
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132 |
}
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slouken@1985
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133 |
if (current_alpha > 255) {
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slouken@1985
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134 |
current_alpha = 255;
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slouken@1985
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135 |
cycle_direction = -cycle_direction;
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slouken@1985
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136 |
}
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slouken@1985
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137 |
SDL_SetTextureAlphaMod(sprite, (Uint8) current_alpha);
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slouken@1985
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138 |
}
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slouken@1985
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139 |
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slouken@3264
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140 |
/* Draw a gray background */
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slouken@3264
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141 |
SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
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slouken@3596
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142 |
SDL_RenderClear();
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slouken@3264
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143 |
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slouken@3265
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144 |
/* Test points */
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slouken@3264
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145 |
SDL_SetRenderDrawColor(0xFF, 0x00, 0x00, 0xFF);
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slouken@3596
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146 |
SDL_RenderDrawPoint(0, 0);
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sunnysachanandani@4601
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147 |
SDL_RenderDrawPoint(window_w-1, 0);
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sunnysachanandani@4601
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148 |
SDL_RenderDrawPoint(0, window_h-1);
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slouken@3596
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149 |
SDL_RenderDrawPoint(window_w-1, window_h-1);
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slouken@3264
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150 |
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slouken@3265
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151 |
/* Test horizontal and vertical lines */
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slouken@3265
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152 |
SDL_SetRenderDrawColor(0x00, 0xFF, 0x00, 0xFF);
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slouken@3596
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153 |
SDL_RenderDrawLine(1, 0, window_w-2, 0);
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slouken@3596
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154 |
SDL_RenderDrawLine(1, window_h-1, window_w-2, window_h-1);
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slouken@3596
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155 |
SDL_RenderDrawLine(0, 1, 0, window_h-2);
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slouken@3596
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156 |
SDL_RenderDrawLine(window_w-1, 1, window_w-1, window_h-2);
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slouken@3265
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157 |
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slouken@3266
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158 |
/* Test fill and copy */
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slouken@3265
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159 |
SDL_SetRenderDrawColor(0xFF, 0xFF, 0xFF, 0xFF);
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slouken@3266
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160 |
temp.x = 1;
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slouken@3266
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161 |
temp.y = 1;
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slouken@3266
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162 |
temp.w = sprite_w;
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slouken@3266
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163 |
temp.h = sprite_h;
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slouken@3596
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164 |
SDL_RenderFillRect(&temp);
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slouken@3266
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165 |
SDL_RenderCopy(sprite, NULL, &temp);
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slouken@3265
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166 |
temp.x = window_w-sprite_w-1;
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slouken@3265
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167 |
temp.y = 1;
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slouken@3265
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168 |
temp.w = sprite_w;
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slouken@3265
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169 |
temp.h = sprite_h;
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slouken@3596
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170 |
SDL_RenderFillRect(&temp);
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slouken@3266
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171 |
SDL_RenderCopy(sprite, NULL, &temp);
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slouken@3265
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172 |
temp.x = 1;
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slouken@3265
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173 |
temp.y = window_h-sprite_h-1;
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slouken@3265
|
174 |
temp.w = sprite_w;
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slouken@3265
|
175 |
temp.h = sprite_h;
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slouken@3596
|
176 |
SDL_RenderFillRect(&temp);
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slouken@3265
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177 |
SDL_RenderCopy(sprite, NULL, &temp);
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slouken@3265
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178 |
temp.x = window_w-sprite_w-1;
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slouken@3265
|
179 |
temp.y = window_h-sprite_h-1;
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slouken@3265
|
180 |
temp.w = sprite_w;
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slouken@3265
|
181 |
temp.h = sprite_h;
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slouken@3596
|
182 |
SDL_RenderFillRect(&temp);
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slouken@3265
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183 |
SDL_RenderCopy(sprite, NULL, &temp);
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slouken@3265
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184 |
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slouken@3265
|
185 |
/* Test diagonal lines */
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slouken@3265
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186 |
SDL_SetRenderDrawColor(0x00, 0xFF, 0x00, 0xFF);
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slouken@3596
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187 |
SDL_RenderDrawLine(sprite_w, sprite_h,
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slouken@3596
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188 |
window_w-sprite_w-2, window_h-sprite_h-2);
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slouken@3596
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189 |
SDL_RenderDrawLine(window_w-sprite_w-2, sprite_h,
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slouken@3596
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190 |
sprite_w, window_h-sprite_h-2);
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slouken@3265
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191 |
|
slouken@1895
|
192 |
/* Move the sprite, bounce at the wall, and draw */
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slouken@1895
|
193 |
n = 0;
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slouken@1895
|
194 |
for (i = 0; i < num_sprites; ++i) {
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slouken@1895
|
195 |
position = &positions[i];
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slouken@1895
|
196 |
velocity = &velocities[i];
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slouken@1895
|
197 |
position->x += velocity->x;
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slouken@1895
|
198 |
if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
|
slouken@1895
|
199 |
velocity->x = -velocity->x;
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slouken@1895
|
200 |
position->x += velocity->x;
|
slouken@1895
|
201 |
}
|
slouken@1895
|
202 |
position->y += velocity->y;
|
slouken@2834
|
203 |
if ((position->y < 0) || (position->y >= (window_h - sprite_h))) {
|
slouken@1895
|
204 |
velocity->y = -velocity->y;
|
slouken@1895
|
205 |
position->y += velocity->y;
|
slouken@1895
|
206 |
}
|
slouken@1895
|
207 |
|
slouken@1895
|
208 |
/* Blit the sprite onto the screen */
|
slouken@1985
|
209 |
SDL_RenderCopy(sprite, NULL, position);
|
slouken@1895
|
210 |
}
|
slouken@1895
|
211 |
|
slouken@1895
|
212 |
/* Update the screen! */
|
slouken@1895
|
213 |
SDL_RenderPresent();
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slouken@1895
|
214 |
}
|
slouken@1895
|
215 |
|
slouken@1895
|
216 |
int
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slouken@1895
|
217 |
main(int argc, char *argv[])
|
slouken@1895
|
218 |
{
|
slouken@1895
|
219 |
int i, done;
|
slouken@1895
|
220 |
SDL_Event event;
|
slouken@1895
|
221 |
Uint32 then, now, frames;
|
slouken@1895
|
222 |
|
slouken@1914
|
223 |
/* Initialize parameters */
|
slouken@1895
|
224 |
num_sprites = NUM_SPRITES;
|
slouken@1914
|
225 |
|
slouken@1914
|
226 |
/* Initialize test framework */
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slouken@1914
|
227 |
state = CommonCreateState(argv, SDL_INIT_VIDEO);
|
slouken@1914
|
228 |
if (!state) {
|
slouken@1914
|
229 |
return 1;
|
slouken@1914
|
230 |
}
|
slouken@1914
|
231 |
for (i = 1; i < argc;) {
|
slouken@1914
|
232 |
int consumed;
|
slouken@1914
|
233 |
|
slouken@1914
|
234 |
consumed = CommonArg(state, i);
|
slouken@1915
|
235 |
if (consumed == 0) {
|
slouken@1916
|
236 |
consumed = -1;
|
slouken@1916
|
237 |
if (SDL_strcasecmp(argv[i], "--blend") == 0) {
|
slouken@1916
|
238 |
if (argv[i + 1]) {
|
slouken@1916
|
239 |
if (SDL_strcasecmp(argv[i + 1], "none") == 0) {
|
slouken@2884
|
240 |
blendMode = SDL_BLENDMODE_NONE;
|
slouken@1916
|
241 |
consumed = 2;
|
slouken@1917
|
242 |
} else if (SDL_strcasecmp(argv[i + 1], "mask") == 0) {
|
slouken@2884
|
243 |
blendMode = SDL_BLENDMODE_MASK;
|
slouken@1917
|
244 |
consumed = 2;
|
slouken@1916
|
245 |
} else if (SDL_strcasecmp(argv[i + 1], "blend") == 0) {
|
slouken@2884
|
246 |
blendMode = SDL_BLENDMODE_BLEND;
|
slouken@1916
|
247 |
consumed = 2;
|
slouken@1916
|
248 |
} else if (SDL_strcasecmp(argv[i + 1], "add") == 0) {
|
slouken@2884
|
249 |
blendMode = SDL_BLENDMODE_ADD;
|
slouken@1916
|
250 |
consumed = 2;
|
slouken@1916
|
251 |
} else if (SDL_strcasecmp(argv[i + 1], "mod") == 0) {
|
slouken@2884
|
252 |
blendMode = SDL_BLENDMODE_MOD;
|
slouken@1916
|
253 |
consumed = 2;
|
slouken@1916
|
254 |
}
|
slouken@1916
|
255 |
}
|
slouken@1917
|
256 |
} else if (SDL_strcasecmp(argv[i], "--scale") == 0) {
|
slouken@1917
|
257 |
if (argv[i + 1]) {
|
slouken@1917
|
258 |
if (SDL_strcasecmp(argv[i + 1], "none") == 0) {
|
slouken@1965
|
259 |
scaleMode = SDL_TEXTURESCALEMODE_NONE;
|
slouken@1917
|
260 |
consumed = 2;
|
slouken@1917
|
261 |
} else if (SDL_strcasecmp(argv[i + 1], "fast") == 0) {
|
slouken@1965
|
262 |
scaleMode = SDL_TEXTURESCALEMODE_FAST;
|
slouken@1917
|
263 |
consumed = 2;
|
slouken@1917
|
264 |
} else if (SDL_strcasecmp(argv[i + 1], "slow") == 0) {
|
slouken@1965
|
265 |
scaleMode = SDL_TEXTURESCALEMODE_SLOW;
|
slouken@1917
|
266 |
consumed = 2;
|
slouken@1917
|
267 |
} else if (SDL_strcasecmp(argv[i + 1], "best") == 0) {
|
slouken@1965
|
268 |
scaleMode = SDL_TEXTURESCALEMODE_BEST;
|
slouken@1917
|
269 |
consumed = 2;
|
slouken@1917
|
270 |
}
|
slouken@1917
|
271 |
}
|
slouken@1985
|
272 |
} else if (SDL_strcasecmp(argv[i], "--cyclecolor") == 0) {
|
slouken@1985
|
273 |
cycle_color = SDL_TRUE;
|
slouken@1985
|
274 |
consumed = 1;
|
slouken@1985
|
275 |
} else if (SDL_strcasecmp(argv[i], "--cyclealpha") == 0) {
|
slouken@1985
|
276 |
cycle_alpha = SDL_TRUE;
|
slouken@1985
|
277 |
consumed = 1;
|
slouken@1916
|
278 |
} else if (SDL_isdigit(*argv[i])) {
|
slouken@1916
|
279 |
num_sprites = SDL_atoi(argv[i]);
|
slouken@1916
|
280 |
consumed = 1;
|
slouken@1916
|
281 |
}
|
slouken@1915
|
282 |
}
|
slouken@1914
|
283 |
if (consumed < 0) {
|
slouken@1917
|
284 |
fprintf(stderr,
|
slouken@1985
|
285 |
"Usage: %s %s [--blend none|mask|blend|add|mod] [--scale none|fast|slow|best] [--cyclecolor] [--cyclealpha]\n",
|
slouken@1916
|
286 |
argv[0], CommonUsage(state));
|
slouken@1895
|
287 |
quit(1);
|
slouken@1895
|
288 |
}
|
slouken@1914
|
289 |
i += consumed;
|
slouken@1895
|
290 |
}
|
slouken@1914
|
291 |
if (!CommonInit(state)) {
|
slouken@1914
|
292 |
quit(2);
|
slouken@1895
|
293 |
}
|
slouken@1895
|
294 |
|
slouken@1895
|
295 |
/* Create the windows, initialize the renderers, and load the textures */
|
slouken@1914
|
296 |
sprites =
|
slouken@3685
|
297 |
(SDL_Texture **) SDL_malloc(state->num_windows * sizeof(*sprites));
|
slouken@1914
|
298 |
if (!sprites) {
|
slouken@1895
|
299 |
fprintf(stderr, "Out of memory!\n");
|
slouken@1895
|
300 |
quit(2);
|
slouken@1895
|
301 |
}
|
slouken@1914
|
302 |
for (i = 0; i < state->num_windows; ++i) {
|
slouken@1914
|
303 |
SDL_SelectRenderer(state->windows[i]);
|
slouken@2884
|
304 |
SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
|
slouken@3596
|
305 |
SDL_RenderClear();
|
slouken@1895
|
306 |
}
|
slouken@1895
|
307 |
if (LoadSprite("icon.bmp") < 0) {
|
slouken@1895
|
308 |
quit(2);
|
slouken@1895
|
309 |
}
|
slouken@1895
|
310 |
|
slouken@1895
|
311 |
/* Allocate memory for the sprite info */
|
slouken@1895
|
312 |
positions = (SDL_Rect *) SDL_malloc(num_sprites * sizeof(SDL_Rect));
|
slouken@1895
|
313 |
velocities = (SDL_Rect *) SDL_malloc(num_sprites * sizeof(SDL_Rect));
|
slouken@1895
|
314 |
if (!positions || !velocities) {
|
slouken@1895
|
315 |
fprintf(stderr, "Out of memory!\n");
|
slouken@1895
|
316 |
quit(2);
|
slouken@1895
|
317 |
}
|
aschiffler@4884
|
318 |
srand((unsigned int)time(NULL));
|
slouken@1965
|
319 |
if (scaleMode != SDL_TEXTURESCALEMODE_NONE) {
|
slouken@1917
|
320 |
sprite_w += sprite_w / 2;
|
slouken@1917
|
321 |
sprite_h += sprite_h / 2;
|
slouken@1917
|
322 |
}
|
slouken@1895
|
323 |
for (i = 0; i < num_sprites; ++i) {
|
slouken@1914
|
324 |
positions[i].x = rand() % (state->window_w - sprite_w);
|
slouken@1914
|
325 |
positions[i].y = rand() % (state->window_h - sprite_h);
|
slouken@1895
|
326 |
positions[i].w = sprite_w;
|
slouken@1895
|
327 |
positions[i].h = sprite_h;
|
slouken@1895
|
328 |
velocities[i].x = 0;
|
slouken@1895
|
329 |
velocities[i].y = 0;
|
slouken@1895
|
330 |
while (!velocities[i].x && !velocities[i].y) {
|
slouken@1895
|
331 |
velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
|
slouken@1895
|
332 |
velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
|
slouken@1895
|
333 |
}
|
slouken@1895
|
334 |
}
|
slouken@1895
|
335 |
|
slouken@1915
|
336 |
/* Main render loop */
|
slouken@1895
|
337 |
frames = 0;
|
slouken@1895
|
338 |
then = SDL_GetTicks();
|
slouken@1895
|
339 |
done = 0;
|
slouken@1895
|
340 |
while (!done) {
|
slouken@1895
|
341 |
/* Check for events */
|
slouken@1895
|
342 |
++frames;
|
slouken@1895
|
343 |
while (SDL_PollEvent(&event)) {
|
slouken@1914
|
344 |
CommonEvent(state, &event, &done);
|
slouken@1895
|
345 |
switch (event.type) {
|
slouken@1895
|
346 |
case SDL_WINDOWEVENT:
|
slouken@1895
|
347 |
switch (event.window.event) {
|
slouken@1895
|
348 |
case SDL_WINDOWEVENT_EXPOSED:
|
slouken@3685
|
349 |
SDL_SelectRenderer(SDL_GetWindowFromID(event.window.windowID));
|
slouken@2884
|
350 |
SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF);
|
slouken@3596
|
351 |
SDL_RenderClear();
|
slouken@1895
|
352 |
break;
|
slouken@1895
|
353 |
}
|
slouken@1895
|
354 |
break;
|
slouken@1895
|
355 |
default:
|
slouken@1895
|
356 |
break;
|
slouken@1895
|
357 |
}
|
slouken@1895
|
358 |
}
|
slouken@1914
|
359 |
for (i = 0; i < state->num_windows; ++i) {
|
slouken@1914
|
360 |
MoveSprites(state->windows[i], sprites[i]);
|
slouken@1895
|
361 |
}
|
slouken@1895
|
362 |
}
|
slouken@1895
|
363 |
|
slouken@1895
|
364 |
/* Print out some timing information */
|
slouken@1895
|
365 |
now = SDL_GetTicks();
|
slouken@1895
|
366 |
if (now > then) {
|
slouken@2786
|
367 |
double fps = ((double) frames * 1000) / (now - then);
|
slouken@2783
|
368 |
printf("%2.2f frames per second\n", fps);
|
slouken@1895
|
369 |
}
|
slouken@1895
|
370 |
quit(0);
|
aschiffler@4884
|
371 |
return 0;
|
slouken@1895
|
372 |
}
|
slouken@1895
|
373 |
|
slouken@1895
|
374 |
/* vi: set ts=4 sw=4 expandtab: */
|