test/testsprite2.c
author Sam Lantinga <slouken@libsdl.org>
Wed, 23 Apr 2008 06:26:33 +0000
branchgsoc2008_iphone
changeset 2331 499682905a66
parent 2222 926294b2bb4e
child 2783 e33ad7ebb7eb
permissions -rw-r--r--
Creating GSoC 2008 code branches
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/* Simple program:  Move N sprites around on the screen as fast as possible */
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include "common.h"
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#define NUM_SPRITES	100
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#define MAX_SPEED 	1
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static CommonState *state;
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static int num_sprites;
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static SDL_TextureID *sprites;
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static SDL_bool cycle_color;
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static SDL_bool cycle_alpha;
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static int cycle_direction = 1;
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static int current_alpha = 0;
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static int current_color = 0;
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static SDL_Rect *positions;
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static SDL_Rect *velocities;
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static int sprite_w, sprite_h;
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static SDL_TextureBlendMode blendMode = SDL_TEXTUREBLENDMODE_MASK;
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static SDL_TextureScaleMode scaleMode = SDL_TEXTURESCALEMODE_NONE;
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/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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static void
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quit(int rc)
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{
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    if (sprites) {
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        SDL_free(sprites);
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    }
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    if (positions) {
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        SDL_free(positions);
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    }
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    if (velocities) {
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        SDL_free(velocities);
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    }
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    CommonQuit(state);
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    exit(rc);
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}
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int
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LoadSprite(char *file)
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{
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    int i;
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    SDL_Surface *temp;
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    /* Load the sprite image */
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    temp = SDL_LoadBMP(file);
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    if (temp == NULL) {
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        fprintf(stderr, "Couldn't load %s: %s", file, SDL_GetError());
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        return (-1);
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    }
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    sprite_w = temp->w;
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    sprite_h = temp->h;
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    /* Set transparent pixel as the pixel at (0,0) */
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    if (temp->format->palette) {
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        SDL_SetColorKey(temp, SDL_SRCCOLORKEY, *(Uint8 *) temp->pixels);
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    }
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    /* Create textures from the image */
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    for (i = 0; i < state->num_windows; ++i) {
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        SDL_SelectRenderer(state->windows[i]);
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        sprites[i] = SDL_CreateTextureFromSurface(0, temp);
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        if (!sprites[i]) {
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            fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
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            SDL_FreeSurface(temp);
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            return (-1);
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        }
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        SDL_SetTextureBlendMode(sprites[i], blendMode);
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        SDL_SetTextureScaleMode(sprites[i], scaleMode);
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    }
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    SDL_FreeSurface(temp);
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    /* We're ready to roll. :) */
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    return (0);
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}
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void
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MoveSprites(SDL_WindowID window, SDL_TextureID sprite)
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{
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    int i, n;
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    int window_w, window_h;
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    SDL_Rect area, *position, *velocity;
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    SDL_SelectRenderer(window);
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    /* Query the sizes */
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    SDL_GetWindowSize(window, &window_w, &window_h);
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    /* Cycle the color and alpha, if desired */
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    if (cycle_color) {
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        current_color += cycle_direction;
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        if (current_color < 0) {
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            current_color = 0;
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            cycle_direction = -cycle_direction;
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        }
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        if (current_color > 255) {
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            current_color = 255;
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            cycle_direction = -cycle_direction;
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        }
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        SDL_SetTextureColorMod(sprite, 255, (Uint8) current_color,
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                               (Uint8) current_color);
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    }
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    if (cycle_alpha) {
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        current_alpha += cycle_direction;
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        if (current_alpha < 0) {
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            current_alpha = 0;
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            cycle_direction = -cycle_direction;
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        }
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        if (current_alpha > 255) {
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            current_alpha = 255;
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            cycle_direction = -cycle_direction;
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        }
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        SDL_SetTextureAlphaMod(sprite, (Uint8) current_alpha);
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    }
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    /* Move the sprite, bounce at the wall, and draw */
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    n = 0;
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    SDL_RenderFill(0xA0, 0xA0, 0xA0, 0xFF, NULL);
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    for (i = 0; i < num_sprites; ++i) {
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        position = &positions[i];
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        velocity = &velocities[i];
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        position->x += velocity->x;
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   127
        if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
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   128
            velocity->x = -velocity->x;
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   129
            position->x += velocity->x;
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parents:
diff changeset
   130
        }
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   131
        position->y += velocity->y;
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   132
        if ((position->y < 0) || (position->y >= (window_h - sprite_w))) {
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parents:
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   133
            velocity->y = -velocity->y;
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   134
            position->y += velocity->y;
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diff changeset
   135
        }
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parents:
diff changeset
   136
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   137
        /* Blit the sprite onto the screen */
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diff changeset
   138
        SDL_RenderCopy(sprite, NULL, position);
1895
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diff changeset
   139
    }
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parents:
diff changeset
   140
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
   141
    /* Update the screen! */
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   142
    SDL_RenderPresent();
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diff changeset
   143
}
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parents:
diff changeset
   144
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   145
int
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   146
main(int argc, char *argv[])
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   147
{
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   148
    int i, done;
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   149
    SDL_Event event;
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   150
    Uint32 then, now, frames;
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diff changeset
   151
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051df511279c Added a test program framework for easy initialization.
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diff changeset
   152
    /* Initialize parameters */
1895
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   153
    num_sprites = NUM_SPRITES;
1914
051df511279c Added a test program framework for easy initialization.
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diff changeset
   154
051df511279c Added a test program framework for easy initialization.
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diff changeset
   155
    /* Initialize test framework */
051df511279c Added a test program framework for easy initialization.
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diff changeset
   156
    state = CommonCreateState(argv, SDL_INIT_VIDEO);
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diff changeset
   157
    if (!state) {
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diff changeset
   158
        return 1;
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diff changeset
   159
    }
051df511279c Added a test program framework for easy initialization.
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diff changeset
   160
    for (i = 1; i < argc;) {
051df511279c Added a test program framework for easy initialization.
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diff changeset
   161
        int consumed;
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diff changeset
   162
051df511279c Added a test program framework for easy initialization.
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diff changeset
   163
        consumed = CommonArg(state, i);
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   164
        if (consumed == 0) {
1916
c773b0c0ac89 Implemented blend modes in the D3D renderer
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diff changeset
   165
            consumed = -1;
c773b0c0ac89 Implemented blend modes in the D3D renderer
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diff changeset
   166
            if (SDL_strcasecmp(argv[i], "--blend") == 0) {
c773b0c0ac89 Implemented blend modes in the D3D renderer
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diff changeset
   167
                if (argv[i + 1]) {
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diff changeset
   168
                    if (SDL_strcasecmp(argv[i + 1], "none") == 0) {
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   169
                        blendMode = SDL_TEXTUREBLENDMODE_NONE;
1916
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   170
                        consumed = 2;
1917
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diff changeset
   171
                    } else if (SDL_strcasecmp(argv[i + 1], "mask") == 0) {
1965
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   172
                        blendMode = SDL_TEXTUREBLENDMODE_MASK;
1917
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   173
                        consumed = 2;
1916
c773b0c0ac89 Implemented blend modes in the D3D renderer
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diff changeset
   174
                    } else if (SDL_strcasecmp(argv[i + 1], "blend") == 0) {
1965
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   175
                        blendMode = SDL_TEXTUREBLENDMODE_BLEND;
1916
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diff changeset
   176
                        consumed = 2;
c773b0c0ac89 Implemented blend modes in the D3D renderer
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diff changeset
   177
                    } else if (SDL_strcasecmp(argv[i + 1], "add") == 0) {
1965
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diff changeset
   178
                        blendMode = SDL_TEXTUREBLENDMODE_ADD;
1916
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diff changeset
   179
                        consumed = 2;
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diff changeset
   180
                    } else if (SDL_strcasecmp(argv[i + 1], "mod") == 0) {
1965
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   181
                        blendMode = SDL_TEXTUREBLENDMODE_MOD;
1916
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   182
                        consumed = 2;
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diff changeset
   183
                    }
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diff changeset
   184
                }
1917
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diff changeset
   185
            } else if (SDL_strcasecmp(argv[i], "--scale") == 0) {
3f54b3ec5a07 Implemented scaling in the D3D renderer
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diff changeset
   186
                if (argv[i + 1]) {
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diff changeset
   187
                    if (SDL_strcasecmp(argv[i + 1], "none") == 0) {
1965
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diff changeset
   188
                        scaleMode = SDL_TEXTURESCALEMODE_NONE;
1917
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diff changeset
   189
                        consumed = 2;
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diff changeset
   190
                    } else if (SDL_strcasecmp(argv[i + 1], "fast") == 0) {
1965
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diff changeset
   191
                        scaleMode = SDL_TEXTURESCALEMODE_FAST;
1917
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diff changeset
   192
                        consumed = 2;
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diff changeset
   193
                    } else if (SDL_strcasecmp(argv[i + 1], "slow") == 0) {
1965
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diff changeset
   194
                        scaleMode = SDL_TEXTURESCALEMODE_SLOW;
1917
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diff changeset
   195
                        consumed = 2;
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parents: 1916
diff changeset
   196
                    } else if (SDL_strcasecmp(argv[i + 1], "best") == 0) {
1965
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diff changeset
   197
                        scaleMode = SDL_TEXTURESCALEMODE_BEST;
1917
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diff changeset
   198
                        consumed = 2;
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diff changeset
   199
                    }
3f54b3ec5a07 Implemented scaling in the D3D renderer
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diff changeset
   200
                }
1985
8055185ae4ed Added source color and alpha modulation support.
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diff changeset
   201
            } else if (SDL_strcasecmp(argv[i], "--cyclecolor") == 0) {
8055185ae4ed Added source color and alpha modulation support.
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diff changeset
   202
                cycle_color = SDL_TRUE;
8055185ae4ed Added source color and alpha modulation support.
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diff changeset
   203
                consumed = 1;
8055185ae4ed Added source color and alpha modulation support.
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diff changeset
   204
            } else if (SDL_strcasecmp(argv[i], "--cyclealpha") == 0) {
8055185ae4ed Added source color and alpha modulation support.
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diff changeset
   205
                cycle_alpha = SDL_TRUE;
8055185ae4ed Added source color and alpha modulation support.
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diff changeset
   206
                consumed = 1;
1916
c773b0c0ac89 Implemented blend modes in the D3D renderer
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parents: 1915
diff changeset
   207
            } else if (SDL_isdigit(*argv[i])) {
c773b0c0ac89 Implemented blend modes in the D3D renderer
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parents: 1915
diff changeset
   208
                num_sprites = SDL_atoi(argv[i]);
c773b0c0ac89 Implemented blend modes in the D3D renderer
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diff changeset
   209
                consumed = 1;
c773b0c0ac89 Implemented blend modes in the D3D renderer
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parents: 1915
diff changeset
   210
            }
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
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parents: 1914
diff changeset
   211
        }
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
   212
        if (consumed < 0) {
1917
3f54b3ec5a07 Implemented scaling in the D3D renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1916
diff changeset
   213
            fprintf(stderr,
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   214
                    "Usage: %s %s [--blend none|mask|blend|add|mod] [--scale none|fast|slow|best] [--cyclecolor] [--cyclealpha]\n",
1916
c773b0c0ac89 Implemented blend modes in the D3D renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1915
diff changeset
   215
                    argv[0], CommonUsage(state));
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
   216
            quit(1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
   217
        }
1914
051df511279c Added a test program framework for easy initialization.
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parents: 1907
diff changeset
   218
        i += consumed;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   219
    }
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
   220
    if (!CommonInit(state)) {
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
   221
        quit(2);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   222
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   223
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   224
    /* Create the windows, initialize the renderers, and load the textures */
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
   225
    sprites =
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
   226
        (SDL_TextureID *) SDL_malloc(state->num_windows * sizeof(*sprites));
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
   227
    if (!sprites) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   228
        fprintf(stderr, "Out of memory!\n");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   229
        quit(2);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   230
    }
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
   231
    for (i = 0; i < state->num_windows; ++i) {
051df511279c Added a test program framework for easy initialization.
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parents: 1907
diff changeset
   232
        SDL_SelectRenderer(state->windows[i]);
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   233
        SDL_RenderFill(0xA0, 0xA0, 0xA0, 0xFF, NULL);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   234
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   235
    if (LoadSprite("icon.bmp") < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   236
        quit(2);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   237
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   238
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   239
    /* Allocate memory for the sprite info */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   240
    positions = (SDL_Rect *) SDL_malloc(num_sprites * sizeof(SDL_Rect));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   241
    velocities = (SDL_Rect *) SDL_malloc(num_sprites * sizeof(SDL_Rect));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   242
    if (!positions || !velocities) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   243
        fprintf(stderr, "Out of memory!\n");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   244
        quit(2);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   245
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   246
    srand(time(NULL));
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1917
diff changeset
   247
    if (scaleMode != SDL_TEXTURESCALEMODE_NONE) {
1917
3f54b3ec5a07 Implemented scaling in the D3D renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1916
diff changeset
   248
        sprite_w += sprite_w / 2;
3f54b3ec5a07 Implemented scaling in the D3D renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1916
diff changeset
   249
        sprite_h += sprite_h / 2;
3f54b3ec5a07 Implemented scaling in the D3D renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1916
diff changeset
   250
    }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   251
    for (i = 0; i < num_sprites; ++i) {
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
   252
        positions[i].x = rand() % (state->window_w - sprite_w);
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        positions[i].y = rand() % (state->window_h - sprite_h);
1895
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        positions[i].w = sprite_w;
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        positions[i].h = sprite_h;
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        velocities[i].x = 0;
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        velocities[i].y = 0;
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        while (!velocities[i].x && !velocities[i].y) {
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            velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
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            velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
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        }
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    }
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   263
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
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    /* Main render loop */
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    frames = 0;
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    then = SDL_GetTicks();
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   267
    done = 0;
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   268
    while (!done) {
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   269
        /* Check for events */
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        ++frames;
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   271
        while (SDL_PollEvent(&event)) {
1914
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            CommonEvent(state, &event, &done);
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            switch (event.type) {
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            case SDL_WINDOWEVENT:
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                switch (event.window.event) {
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                case SDL_WINDOWEVENT_EXPOSED:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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                    SDL_SelectRenderer(event.window.windowID);
1985
8055185ae4ed Added source color and alpha modulation support.
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   278
                    SDL_RenderFill(0xA0, 0xA0, 0xA0, 0xFF, NULL);
1895
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   279
                    break;
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   280
                }
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   281
                break;
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   282
            default:
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   283
                break;
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diff changeset
   284
            }
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   285
        }
1914
051df511279c Added a test program framework for easy initialization.
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   286
        for (i = 0; i < state->num_windows; ++i) {
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   287
            MoveSprites(state->windows[i], sprites[i]);
1895
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   288
        }
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   289
    }
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diff changeset
   290
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   291
    /* Print out some timing information */
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   292
    now = SDL_GetTicks();
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   293
    if (now > then) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   294
        printf("%2.2f frames per second\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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               ((double) frames * 1000) / (now - then));
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diff changeset
   296
    }
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   297
    quit(0);
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diff changeset
   298
}
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   299
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/* vi: set ts=4 sw=4 expandtab: */