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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include <string.h>
#include "common/scummsys.h"
#include "sky/skydefs.h"
#include "sky/sky.h"
#define fade_jump 2
#define scroll_jump 16
#define vga_colours 256
#define game_colours 240
uint8 top_16_colours[] =
{
0, 0, 0,
38, 38, 38,
63, 63, 63,
0, 0, 0,
0, 0, 0,
0, 0, 0,
0, 0, 0,
54, 54, 54,
45, 47, 49,
32, 31, 41,
29, 23, 37,
23, 18, 30,
49, 11, 11,
39, 5, 5,
29, 1, 1,
63, 63, 63
};
void SkyState::initialise_screen(void)
{
int i;
uint8 tmp_pal[1024];
_system->init_size(full_screen_width, full_screen_height);
_backscreen = (uint8 *)malloc(full_screen_width*full_screen_height);
_game_grid = (uint8 *)malloc(GRID_X*GRID_Y*2);
_work_palette = (uint8 *)malloc(vga_colours*3);
//blank the first 240 colors of the palette
memset(tmp_pal, 0, game_colours * 4);
//set the remaining colors
for (i = 0; i < (vga_colours-game_colours); i++) {
tmp_pal[game_colours+i*4] = (top_16_colours[i*3] << 2) + (top_16_colours[i*3] & 3);
tmp_pal[game_colours+i*4+1] = (top_16_colours[i*3+1] << 2) + (top_16_colours[i*3+1] & 3);
tmp_pal[game_colours+i*4+2] = (top_16_colours[i*3+2] << 2) + (top_16_colours[i*3+2] & 3);
tmp_pal[game_colours+i*4+3] = 0x00;
}
//set the palette
_system->set_palette(tmp_pal, 0, 256);
}
//set a new palette, pal is a pointer to dos vga rgb components 0..63
void SkyState::set_palette(uint8 *pal)
{
convert_palette(pal, _palette);
_system->set_palette(_palette, 0, 256);
}
void SkyState::convert_palette(uint8 *inpal, uint8* outpal) //convert 3 byte 0..63 rgb to 4byte 0..255 rgbx
{
int i;
for (i = 0; i < vga_colours; i++) {
outpal[4*i] = (inpal[3*i] << 2) + (inpal[3*i] & 3);
outpal[4*i+1] = (inpal[3*i+1] << 2) + (inpal[3*i+1] & 3);
outpal[4*i+2] = (inpal[3*i+2] << 2) + (inpal[3*i+2] & 3);
outpal[4*i+3] = 0x00;
}
}
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