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97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2003 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include <string.h>
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#include "common/scummsys.h"
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#include "sky/skydefs.h"
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#include "sky/sky.h"
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#define fade_jump 2
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#define scroll_jump 16
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#define vga_colours 256
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#define game_colours 240
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uint8 top_16_colours[] =
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{
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0, 0, 0,
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38, 38, 38,
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63, 63, 63,
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0, 0, 0,
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0, 0, 0,
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0, 0, 0,
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0, 0, 0,
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54, 54, 54,
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45, 47, 49,
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32, 31, 41,
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29, 23, 37,
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23, 18, 30,
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49, 11, 11,
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39, 5, 5,
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29, 1, 1,
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63, 63, 63
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};
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void SkyState::initialise_screen(void)
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{
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int i;
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uint8 tmp_pal[1024];
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_system->init_size(full_screen_width, full_screen_height);
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_backscreen = (uint8 *)malloc(full_screen_width*full_screen_height);
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_game_grid = (uint8 *)malloc(GRID_X*GRID_Y*2);
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_work_palette = (uint8 *)malloc(vga_colours*3);
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//blank the first 240 colors of the palette
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bzero(tmp_pal, game_colours*4);
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//set the remaining colors
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for (i=0; i<(vga_colours-game_colours); i++) {
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tmp_pal[game_colours+i*4] = (top_16_colours[i*3] << 2) + (top_16_colours[i*3] & 3);
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tmp_pal[game_colours+i*4+1] = (top_16_colours[i*3+1] << 2) + (top_16_colours[i*3+1] & 3);
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tmp_pal[game_colours+i*4+2] = (top_16_colours[i*3+2] << 2) + (top_16_colours[i*3+2] & 3);
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tmp_pal[game_colours+i*4+3] = 0x00;
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}
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//set the palette
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_system->set_palette(tmp_pal, 0, 256);
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}
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//set a new palette, pal is a pointer to dos vga rgb components 0..63
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void SkyState::set_palette(uint8 *pal)
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{
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convert_palette(pal, _palette);
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_system->set_palette(_palette, 0, 256);
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}
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void SkyState::convert_palette(uint8 *inpal, uint8* outpal) //convert 3 byte 0..63 rgb to 4byte 0..255 rgbx
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{
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int i;
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for (i = 0; i < vga_colours; i++) {
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outpal[4*i] = (inpal[3*i] << 2) + (inpal[3*i] & 3);
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outpal[4*i+1] = (inpal[3*i+1] << 2) + (inpal[3*i+1] & 3);
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outpal[4*i+2] = (inpal[3*i+2] << 2) + (inpal[3*i+2] & 3);
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outpal[4*i+3] = 0x00;
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}
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}
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