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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004 Ivan Dubrov
* Copyright (C) 2004-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "common/stdafx.h"
#include "common/endian.h"
#include "gob/gob.h"
#include "gob/global.h"
#include "gob/video.h"
#include "gob/draw.h"
namespace Gob {
Video_v2::Video_v2(GobEngine *vm) : Video_v1(vm) {
}
//XXX: Use this function to update the screen for now.
// This should be moved to a better location later on.
void Video_v2::waitRetrace(int16) {
if (_vm->_draw->_frontSurface) {
g_system->copyRectToScreen(_vm->_draw->_frontSurface->vidPtr, 320, 0, 0, 320, 200);
g_system->updateScreen();
}
}
void Video_v2::drawLetter(int16 item, int16 x, int16 y, FontDesc *fontDesc, int16 color1,
int16 color2, int16 transp, SurfaceDesc *dest) {
int16 videoMode;
videoMode = dest->vidMode;
// Is that needed at all? And what does it do anyway?
char *dataPtr;
int16 itemSize;
int16 si;
int16 di;
int16 dx;
char *var_A;
int16 var_10;
if (fontDesc->endItem == 0) {
itemSize = fontDesc->itemSize + 3;
dataPtr = fontDesc->dataPtr;
var_10 = dataPtr[-2] - 1;
si = 0;
do {
di = ((si + var_10) / 2) * itemSize;
var_A = fontDesc->dataPtr + di;
dx = (READ_LE_UINT16(var_A) & 0x7FFF);
if (item > dx)
var_10 = di - 1;
else
si = di + 1;
} while ((dx != item) && (si <= var_10));
if (dx != item)
return;
fontDesc->dataPtr = var_A + 3;
item = 0;
}
dest->vidMode &= 0x7F;
_videoDriver->drawLetter((unsigned char) item, x, y, fontDesc, color1, color2, transp, dest);
dest->vidMode = videoMode;
}
Video::SurfaceDesc *Video_v2::initSurfDesc(int16 vidMode, int16 width, int16 height, int16 flags) {
int8 flagsAnd2;
byte *vidMem = 0;
int32 sprSize;
int16 someFlags = 1;
SurfaceDesc *descPtr;
if (flags != PRIMARY_SURFACE)
_vm->_global->_sprAllocated++;
if (flags & RETURN_PRIMARY)
return _vm->_draw->_frontSurface;
if (vidMode != 0x13)
error("Video::initSurfDesc: Only VGA 0x13 mode is supported!");
if ((flags & PRIMARY_SURFACE) == 0)
vidMode += 0x80;
if (flags & 2)
flagsAnd2 = 1;
else
flagsAnd2 = 0;
width = (width + 7) & 0xFFF8;
if (flags & PRIMARY_SURFACE) {
_vm->_global->_primaryWidth = width;
_vm->_global->_mouseMaxCol = width;
_vm->_global->_primaryHeight = height;
_vm->_global->_mouseMaxRow = height;
sprSize = 0;
} else {
vidMem = 0;
sprSize = Video::getRectSize(width, height, flagsAnd2, vidMode);
someFlags = 4;
if (flagsAnd2)
someFlags += 0x80;
}
if (flags & PRIMARY_SURFACE) {
descPtr = _vm->_draw->_frontSurface;
assert(descPtr);
if (descPtr->vidPtr != 0)
delete[] descPtr->vidPtr;
vidMem = new byte[320 * 200];
} else {
if (flags & DISABLE_SPR_ALLOC) {
descPtr = new SurfaceDesc;
// this case causes vidPtr to be set to invalid memory
assert(false);
} else {
descPtr = new SurfaceDesc;
descPtr->vidPtr = new byte[sprSize];
vidMem = descPtr->vidPtr;
}
}
if (descPtr == 0)
return 0;
descPtr->width = width;
descPtr->height = height;
descPtr->flag = someFlags;
descPtr->vidMode = vidMode;
descPtr->vidPtr = vidMem;
descPtr->reserved1 = 0;
descPtr->reserved2 = 0;
return descPtr;
}
} // End of namespace Gob
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