mirror of
https://github.com/libretro/scummvm.git
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93 lines
2.7 KiB
C++
93 lines
2.7 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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* $URL$
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* $Id$
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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/system.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(int screenNum, image_pt image, ovl_t overlayType) {
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debugC(1, kDebugFile, "readOverlay(%d, ...)", screenNum);
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image_pt tmpImage = image; // temp ptr to overlay file
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_sceneryArchive1.seek((uint32)screenNum * sizeof(sceneBlock_t), SEEK_SET);
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sceneBlock_t sceneBlock; // Database header entry
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sceneBlock.scene_off = _sceneryArchive1.readUint32LE();
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sceneBlock.scene_len = _sceneryArchive1.readUint32LE();
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sceneBlock.b_off = _sceneryArchive1.readUint32LE();
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sceneBlock.b_len = _sceneryArchive1.readUint32LE();
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sceneBlock.o_off = _sceneryArchive1.readUint32LE();
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sceneBlock.o_len = _sceneryArchive1.readUint32LE();
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sceneBlock.ob_off = _sceneryArchive1.readUint32LE();
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sceneBlock.ob_len = _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.b_off, SEEK_SET);
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i = sceneBlock.b_len;
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break;
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case kOvlOverlay:
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_sceneryArchive1.seek(sceneBlock.o_off, SEEK_SET);
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i = sceneBlock.o_len;
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break;
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case kOvlBase:
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_sceneryArchive1.seek(sceneBlock.ob_off, SEEK_SET);
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i = sceneBlock.ob_len;
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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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for (int idx = 0; idx < kOvlSize; idx++)
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image[idx] = 0;
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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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