mirror of
https://github.com/libretro/scummvm.git
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90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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/*
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* This code is based on original Hugo Trilogy source code
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*
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* Copyright (c) 1989-1995 David P. Gray
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*
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*/
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#include "common/debug.h"
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#include "common/system.h"
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#include "common/textconsole.h"
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#include "hugo/hugo.h"
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#include "hugo/file.h"
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#include "hugo/util.h"
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namespace Hugo {
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FileManager_v1w::FileManager_v1w(HugoEngine *vm) : FileManager_v2w(vm) {
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}
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FileManager_v1w::~FileManager_v1w() {
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}
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/**
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* Open and read in an overlay file, close file
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*/
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void FileManager_v1w::readOverlay(const int screenNum, ImagePtr image, OvlType overlayType) {
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debugC(1, kDebugFile, "readOverlay(%d, ...)", screenNum);
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ImagePtr tmpImage = image; // temp ptr to overlay file
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_sceneryArchive1.seek((uint32)screenNum * sizeof(SceneBlock), SEEK_SET);
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SceneBlock sceneBlock; // Database header entry
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sceneBlock._sceneOffset = _sceneryArchive1.readUint32LE();
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sceneBlock._sceneLength = _sceneryArchive1.readUint32LE();
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sceneBlock._boundaryOffset = _sceneryArchive1.readUint32LE();
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sceneBlock._boundaryLength = _sceneryArchive1.readUint32LE();
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sceneBlock._overlayOffset = _sceneryArchive1.readUint32LE();
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sceneBlock._overlayLength = _sceneryArchive1.readUint32LE();
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sceneBlock._baseOffset = _sceneryArchive1.readUint32LE();
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sceneBlock._baseLength = _sceneryArchive1.readUint32LE();
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uint32 i = 0;
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switch (overlayType) {
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case kOvlBoundary:
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_sceneryArchive1.seek(sceneBlock._boundaryOffset, SEEK_SET);
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i = sceneBlock._boundaryLength;
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break;
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case kOvlOverlay:
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_sceneryArchive1.seek(sceneBlock._overlayOffset, SEEK_SET);
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i = sceneBlock._overlayLength;
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break;
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case kOvlBase:
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_sceneryArchive1.seek(sceneBlock._baseOffset, SEEK_SET);
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i = sceneBlock._baseLength;
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break;
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default:
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error("Bad overlayType: %d", overlayType);
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break;
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}
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if (i == 0) {
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memset(image, 0, kOvlSize);
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return;
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}
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_sceneryArchive1.read(tmpImage, kOvlSize);
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}
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} // End of namespace Hugo
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