diff options
Diffstat (limited to 'modules/mod_map/file_pcx.c')
| -rw-r--r-- | modules/mod_map/file_pcx.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/modules/mod_map/file_pcx.c b/modules/mod_map/file_pcx.c new file mode 100644 index 0000000..4bdc3df --- /dev/null +++ b/modules/mod_map/file_pcx.c @@ -0,0 +1,187 @@ +/* + * Copyright © 2006-2016 SplinterGU (Fenix/Bennugd) + * Copyright © 2002-2006 Fenix Team (Fenix) + * Copyright © 1999-2002 José Luis Cebrián Pagüe (Fenix) + * + * This file is part of Bennu - Game Development + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * + * 3. This notice may not be removed or altered from any source + * distribution. + * + */ + +/* --------------------------------------------------------------------------- */ + +#include "mod_map.h" + +/* --------------------------------------------------------------------------- */ + +/* + * TYPE DEFINITIONS + */ + +typedef struct +{ + uint8_t Manufacturer; + uint8_t Version; + uint8_t Encoding; + uint8_t BitsPerPixel; + int16_t Xmin, Ymin, Xmax, Ymax; + int16_t HDpi, VDpi; + uint8_t Colormap[48]; + uint8_t Reserved; + uint8_t NPlanes; + int16_t BytesPerLine; + int16_t PaletteInfo; + int16_t HscreenSize; + int16_t VscreenSize; + uint8_t Filler[54]; +} PCXheader ; + +/* --------------------------------------------------------------------------- */ + +/* + * FUNCTION : gr_read_pcx + * + * Returns GRAPH newly created from FILENAME. GRAPH is created in LIB 0 + * + * PARAMS: + * CONST CHAR * filename: File to be read + * + * RETURN VALUE: + * pointer to the newly created GRAPH + * + */ + +GRAPH * gr_read_pcx( const char * filename ) +{ + PCXheader header ; + file * file ; + int width, height, x, y, p, count ; + GRAPH * bitmap ; + uint8_t * ptr, ch ; + + file = file_open( filename, "rb" ) ; + if ( !file ) return NULL ; + + file_read( file, &header, sizeof( header ) ) ; + + /* Arrange the data for big-endian machines */ + ARRANGE_WORD( &header.Xmax ); + ARRANGE_WORD( &header.Xmin ); + ARRANGE_WORD( &header.Ymax ); + ARRANGE_WORD( &header.Ymin ); + ARRANGE_WORD( &header.BytesPerLine ); + ARRANGE_WORD( &header.PaletteInfo ); + ARRANGE_WORD( &header.HDpi ); + ARRANGE_WORD( &header.VDpi ); + ARRANGE_WORD( &header.HscreenSize ); + ARRANGE_WORD( &header.VscreenSize ); + + width = header.Xmax - header.Xmin + 1 ; + height = header.Ymax - header.Ymin + 1 ; + + bitmap = bitmap_new( 0, width, height, ( header.BitsPerPixel == 8 ) ? 8 : 16 ) ; + if ( !bitmap ) + { + file_close( file ); + return NULL; + } + + if ( width > header.BytesPerLine ) + { + bitmap_destroy( bitmap ); + file_close( file ); + return NULL; + } + + if ( header.BitsPerPixel == 8 ) + { + for ( y = 0 ; y < height ; y++ ) + for ( p = 0 ; p < header.NPlanes ; p++ ) + { + ptr = ( uint8_t * )bitmap->data + bitmap->pitch * y ; + for ( x = 0 ; x < header.BytesPerLine ; ) + { + if ( file_read( file, &ch, 1 ) < 1 ) + { + bitmap_destroy( bitmap ); + file_close( file ); + return NULL; + } + if (( ch & 0xC0 ) == 0xC0 ) + { + count = ( ch & 0x3F ) ; + file_read( file, &ch, 1 ) ; + } + else + { + count = 1 ; + } + while ( count-- ) + { + *ptr = ch ; + x++ ; + ptr += header.NPlanes ; + } + } + } + + if ( file_read( file, &ch, 1 ) == 1 && ch == 0x0c ) + { + uint8_t colors[256 * 3] ; + if ( file_read( file, colors, sizeof( colors ) ) ) + { + bitmap->format->palette = pal_new_rgb(( uint8_t * )colors ); + pal_refresh( bitmap->format->palette ); + + if ( !sys_pixel_format->palette ) + { + sys_pixel_format->palette = pal_new( bitmap->format->palette ); +/* pal_use( bitmap->format->palette ); */ + palette_changed = 1 ; + } + } + } + } + else + { + bitmap_destroy( bitmap ); + file_close( file ); + return NULL; + } + + bitmap->modified = 0 ; + bitmap_analize( bitmap ); + + return bitmap ; +} + +/* --------------------------------------------------------------------------- */ + +int gr_load_pcx( const char * mapname ) +{ + GRAPH * gr = gr_read_pcx( mapname ) ; + if ( !gr ) return 0 ; + gr->code = bitmap_next_code() ; + grlib_add_map( 0, gr ) ; + return gr->code ; +} + +/* --------------------------------------------------------------------------- */ |