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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5131 | clevermous | 1 | /* |
| 2 | SDL_anim: an animation library for SDL |
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| 3 | Copyright (C) 2001, 2002 Michael Leonhard |
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| 4 | |||
| 5 | This library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Library General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2 of the License, or (at your option) any later version. |
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| 9 | |||
| 10 | This library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Library General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU Library General Public |
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| 16 | License along with this library; if not, write to the Free |
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| 17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 18 | |||
| 19 | Michael Leonhard |
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| 20 | mike@tamale.net |
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| 21 | */ |
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| 22 | |||
| 23 | #include |
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| 24 | #include |
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| 25 | #include |
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| 26 | #include |
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| 27 | #include "SDL_anim.h" |
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| 28 | |||
| 29 | /* Draw a Gimpish background pattern to show transparency in the anim */ |
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| 30 | void draw_background( SDL_Surface *screen ) { |
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| 31 | Uint8 *dst = screen->pixels; |
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| 32 | int x, y; |
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| 33 | int bpp = screen->format->BytesPerPixel; |
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| 34 | Uint32 col[2]; |
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| 35 | col[0] = SDL_MapRGB(screen->format, 0x66, 0x66, 0x66); |
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| 36 | col[1] = SDL_MapRGB(screen->format, 0x99, 0x99, 0x99); |
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| 37 | for(y = 0; y < screen->h; y++) { |
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| 38 | for(x = 0; x < screen->w; x++) { |
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| 39 | /* use an 8x8 checkerboard pattern */ |
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| 40 | Uint32 c = col[((x ^ y) >> 3) & 1]; |
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| 41 | switch(bpp) { |
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| 42 | case 1: |
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| 43 | dst[x] = c; |
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| 44 | break; |
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| 45 | case 2: |
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| 46 | ((Uint16 *)dst)[x] = c; |
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| 47 | break; |
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| 48 | case 3: |
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| 49 | if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { |
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| 50 | dst[x * 3] = c; |
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| 51 | dst[x * 3 + 1] = c >> 8; |
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| 52 | dst[x * 3 + 2] = c >> 16; |
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| 53 | } |
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| 54 | else { |
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| 55 | dst[x * 3] = c >> 16; |
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| 56 | dst[x * 3 + 1] = c >> 8; |
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| 57 | dst[x * 3 + 2] = c; |
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| 58 | } |
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| 59 | break; |
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| 60 | case 4: |
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| 61 | ((Uint32 *)dst)[x] = c; |
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| 62 | break; |
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| 63 | } |
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| 64 | } |
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| 65 | dst += screen->pitch; |
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| 66 | } |
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| 67 | } |
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| 68 | |||
| 69 | int app_main(int argc, char *argv[]) { |
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| 70 | SDL_Surface *screen; |
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| 71 | SDL_Animation *anim; |
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| 72 | SDL_Rect rect; |
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| 73 | SDL_Event event; |
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| 74 | SDL_KeyboardEvent *key; |
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| 75 | int depth, done; |
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| 76 | Uint32 start; |
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| 77 | |||
| 78 | argv[1]="ship.ani"; |
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| 79 | /* Initialize the SDL library */ |
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| 80 | if( SDL_Init( SDL_INIT_VIDEO ) < 0 ) { |
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| 81 | fprintf( stderr, "Couldn't initialize SDL: %s\n", SDL_GetError() ); |
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| 82 | return 2; |
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| 83 | } |
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| 84 | |||
| 85 | /* Open the anim file */ |
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| 86 | anim = Anim_Load(argv[1]); |
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| 87 | if( anim == NULL ) { |
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| 88 | fprintf( stderr, "Couldn't load %s: %s\n", argv[1], SDL_GetError() ); |
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| 89 | SDL_Quit(); |
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| 90 | return 3; |
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| 91 | } |
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| 92 | |||
| 93 | SDL_WM_SetCaption( argv[1], "showanim" ); |
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| 94 | |||
| 95 | /* Create a display for the anim */ |
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| 96 | depth = SDL_VideoModeOK( anim->w + 1, anim->h, 32, SDL_HWPALETTE ); |
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| 97 | /* Use the deepest native mode, except that we emulate 32bpp for */ |
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| 98 | /* viewing non-indexed anims on 8bpp screens */ |
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| 99 | if( (anim->surface->format->BytesPerPixel > 1) && (depth == 8) ) { |
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| 100 | depth = 32; |
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| 101 | } |
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| 102 | screen = SDL_SetVideoMode( anim->w + 10, anim->h, 16, SDL_HWPALETTE ); |
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| 103 | if( screen == NULL ) { |
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| 104 | fprintf( stderr, "Couldn't set %dx%dx%d video mode: %s\n", |
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| 105 | anim->w, anim->h, depth, SDL_GetError() ); |
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| 106 | SDL_Quit(); |
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| 107 | return 4; |
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| 108 | } |
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| 109 | |||
| 110 | /* Set the palette, if one exists */ |
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| 111 | if( anim->surface->format->palette ) { |
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| 112 | SDL_SetColors( screen, anim->surface->format->palette->colors, |
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| 113 | 0, anim->surface->format->palette->ncolors ); |
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| 114 | } |
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| 115 | |||
| 116 | |||
| 117 | if( !Anim_DisplayFormat( anim ) ) { |
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| 118 | fprintf( stderr, "Anim_DisplayFormat() failed\n" ); |
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| 119 | return 5; |
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| 120 | } |
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| 121 | |||
| 122 | done = 0; |
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| 123 | start = SDL_GetTicks(); |
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| 124 | while( !done ) { |
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| 125 | while( SDL_PollEvent( &event ) ) { |
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| 126 | switch( event.type ) { |
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| 127 | case SDL_QUIT: |
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| 128 | done = 1; |
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| 129 | break; |
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| 130 | case SDL_KEYDOWN: |
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| 131 | key = (SDL_KeyboardEvent *)&event; |
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| 132 | if( key->keysym.sym == SDLK_ESCAPE ) done = 1; |
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| 133 | start = SDL_GetTicks(); |
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| 134 | break; |
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| 135 | } |
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| 136 | } |
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| 137 | |||
| 138 | draw_background( screen ); |
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| 139 | rect.x = 0; |
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| 140 | rect.y = 0; |
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| 141 | Anim_BlitFrame( anim, start, SDL_GetTicks(), screen, &rect ); |
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| 142 | SDL_UpdateRect( screen, 0, 0, 0, 0 ); |
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| 143 | SDL_Delay( 100 ); |
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| 144 | } |
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| 145 | |||
| 146 | Anim_Free( anim ); |
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| 147 | SDL_Quit(); |
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| 148 | return 0; |
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| 149 | } |