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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
*/
/*
* This code is based on original Hugo Trilogy source code
*
* Copyright (c) 1989-1995 David P. Gray
*
*/
#include "common/debug.h"
#include "common/system.h"
#include "common/textconsole.h"
#include "hugo/hugo.h"
#include "hugo/file.h"
#include "hugo/util.h"
namespace Hugo {
FileManager_v1w::FileManager_v1w(HugoEngine *vm) : FileManager_v2w(vm) {
}
FileManager_v1w::~FileManager_v1w() {
}
/**
* Open and read in an overlay file, close file
*/
void FileManager_v1w::readOverlay(const int screenNum, ImagePtr image, OvlType overlayType) {
debugC(1, kDebugFile, "readOverlay(%d, ...)", screenNum);
ImagePtr tmpImage = image; // temp ptr to overlay file
_sceneryArchive1.seek((uint32)screenNum * sizeof(SceneBlock), SEEK_SET);
SceneBlock sceneBlock; // Database header entry
sceneBlock._sceneOffset = _sceneryArchive1.readUint32LE();
sceneBlock._sceneLength = _sceneryArchive1.readUint32LE();
sceneBlock._boundaryOffset = _sceneryArchive1.readUint32LE();
sceneBlock._boundaryLength = _sceneryArchive1.readUint32LE();
sceneBlock._overlayOffset = _sceneryArchive1.readUint32LE();
sceneBlock._overlayLength = _sceneryArchive1.readUint32LE();
sceneBlock._baseOffset = _sceneryArchive1.readUint32LE();
sceneBlock._baseLength = _sceneryArchive1.readUint32LE();
uint32 i = 0;
switch (overlayType) {
case kOvlBoundary:
_sceneryArchive1.seek(sceneBlock._boundaryOffset, SEEK_SET);
i = sceneBlock._boundaryLength;
break;
case kOvlOverlay:
_sceneryArchive1.seek(sceneBlock._overlayOffset, SEEK_SET);
i = sceneBlock._overlayLength;
break;
case kOvlBase:
_sceneryArchive1.seek(sceneBlock._baseOffset, SEEK_SET);
i = sceneBlock._baseLength;
break;
default:
error("Bad overlayType: %d", overlayType);
break;
}
if (i == 0) {
memset(image, 0, kOvlSize);
return;
}
_sceneryArchive1.read(tmpImage, kOvlSize);
}
} // End of namespace Hugo
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