forked from KolibriOS/kolibrios
150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/*
|
|
SDL_anim: an animation library for SDL
|
|
Copyright (C) 2001, 2002 Michael Leonhard
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; if not, write to the Free
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
Michael Leonhard
|
|
mike@tamale.net
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <SDL/SDL.h>
|
|
#include "SDL_anim.h"
|
|
|
|
/* Draw a Gimpish background pattern to show transparency in the anim */
|
|
void draw_background( SDL_Surface *screen ) {
|
|
Uint8 *dst = screen->pixels;
|
|
int x, y;
|
|
int bpp = screen->format->BytesPerPixel;
|
|
Uint32 col[2];
|
|
col[0] = SDL_MapRGB(screen->format, 0x66, 0x66, 0x66);
|
|
col[1] = SDL_MapRGB(screen->format, 0x99, 0x99, 0x99);
|
|
for(y = 0; y < screen->h; y++) {
|
|
for(x = 0; x < screen->w; x++) {
|
|
/* use an 8x8 checkerboard pattern */
|
|
Uint32 c = col[((x ^ y) >> 3) & 1];
|
|
switch(bpp) {
|
|
case 1:
|
|
dst[x] = c;
|
|
break;
|
|
case 2:
|
|
((Uint16 *)dst)[x] = c;
|
|
break;
|
|
case 3:
|
|
if(SDL_BYTEORDER == SDL_LIL_ENDIAN) {
|
|
dst[x * 3] = c;
|
|
dst[x * 3 + 1] = c >> 8;
|
|
dst[x * 3 + 2] = c >> 16;
|
|
}
|
|
else {
|
|
dst[x * 3] = c >> 16;
|
|
dst[x * 3 + 1] = c >> 8;
|
|
dst[x * 3 + 2] = c;
|
|
}
|
|
break;
|
|
case 4:
|
|
((Uint32 *)dst)[x] = c;
|
|
break;
|
|
}
|
|
}
|
|
dst += screen->pitch;
|
|
}
|
|
}
|
|
|
|
int app_main(int argc, char *argv[]) {
|
|
SDL_Surface *screen;
|
|
SDL_Animation *anim;
|
|
SDL_Rect rect;
|
|
SDL_Event event;
|
|
SDL_KeyboardEvent *key;
|
|
int depth, done;
|
|
Uint32 start;
|
|
|
|
argv[1]="ship.ani";
|
|
/* Initialize the SDL library */
|
|
if( SDL_Init( SDL_INIT_VIDEO ) < 0 ) {
|
|
fprintf( stderr, "Couldn't initialize SDL: %s\n", SDL_GetError() );
|
|
return 2;
|
|
}
|
|
|
|
/* Open the anim file */
|
|
anim = Anim_Load(argv[1]);
|
|
if( anim == NULL ) {
|
|
fprintf( stderr, "Couldn't load %s: %s\n", argv[1], SDL_GetError() );
|
|
SDL_Quit();
|
|
return 3;
|
|
}
|
|
|
|
SDL_WM_SetCaption( argv[1], "showanim" );
|
|
|
|
/* Create a display for the anim */
|
|
depth = SDL_VideoModeOK( anim->w + 1, anim->h, 32, SDL_HWPALETTE );
|
|
/* Use the deepest native mode, except that we emulate 32bpp for */
|
|
/* viewing non-indexed anims on 8bpp screens */
|
|
if( (anim->surface->format->BytesPerPixel > 1) && (depth == 8) ) {
|
|
depth = 32;
|
|
}
|
|
screen = SDL_SetVideoMode( anim->w + 10, anim->h, 16, SDL_HWPALETTE );
|
|
if( screen == NULL ) {
|
|
fprintf( stderr, "Couldn't set %dx%dx%d video mode: %s\n",
|
|
anim->w, anim->h, depth, SDL_GetError() );
|
|
SDL_Quit();
|
|
return 4;
|
|
}
|
|
|
|
/* Set the palette, if one exists */
|
|
if( anim->surface->format->palette ) {
|
|
SDL_SetColors( screen, anim->surface->format->palette->colors,
|
|
0, anim->surface->format->palette->ncolors );
|
|
}
|
|
|
|
|
|
if( !Anim_DisplayFormat( anim ) ) {
|
|
fprintf( stderr, "Anim_DisplayFormat() failed\n" );
|
|
return 5;
|
|
}
|
|
|
|
done = 0;
|
|
start = SDL_GetTicks();
|
|
while( !done ) {
|
|
while( SDL_PollEvent( &event ) ) {
|
|
switch( event.type ) {
|
|
case SDL_QUIT:
|
|
done = 1;
|
|
break;
|
|
case SDL_KEYDOWN:
|
|
key = (SDL_KeyboardEvent *)&event;
|
|
if( key->keysym.sym == SDLK_ESCAPE ) done = 1;
|
|
start = SDL_GetTicks();
|
|
break;
|
|
}
|
|
}
|
|
|
|
draw_background( screen );
|
|
rect.x = 0;
|
|
rect.y = 0;
|
|
Anim_BlitFrame( anim, start, SDL_GetTicks(), screen, &rect );
|
|
SDL_UpdateRect( screen, 0, 0, 0, 0 );
|
|
SDL_Delay( 100 );
|
|
}
|
|
|
|
Anim_Free( anim );
|
|
SDL_Quit();
|
|
return 0;
|
|
}
|