mirror of
https://github.com/libretro/scummvm.git
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142 lines
3.9 KiB
C++
142 lines
3.9 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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#ifndef M4_RESOURCE_H
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#define M4_RESOURCE_H
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#include "common/scummsys.h"
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#include "common/stream.h"
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#include "common/endian.h"
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#include "common/file.h"
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#include "common/hashmap.h"
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#include "common/hash-str.h"
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#include "common/list.h"
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#include "common/ptr.h"
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/*
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TODO:
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- change array to HashMap if it turns out to be slow
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*/
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namespace M4 {
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#define MAX_RESOURCES 128
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#define kM4MaxFilenameSize 33
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enum {
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kResourcePurge = 1 << 1
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};
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class FileSystem {
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public:
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struct HashHagEntry {
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char filename[kM4MaxFilenameSize];
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byte fileIndex;
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Common::File *hagFile;
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};
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struct HashFileEntry {
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char filename[kM4MaxFilenameSize];
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byte hagfile;
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uint32 offset, size;
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};
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FileSystem(const char *hashFilename);
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~FileSystem();
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Common::SeekableReadStream *loadFile(const char *resourceName, bool preloadFlag);
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static void changeExtension(char *destName, const char *sourceName, const char *extension);
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const HashFileEntry *getHashFileEntry(const char *filename);
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private:
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typedef Common::HashMap<Common::String,HashFileEntry,Common::IgnoreCase_Hash,Common::IgnoreCase_EqualTo> FileHashMap;
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HashHagEntry _hagEntries[10]; // GLOBAL.HAG and SECTION1.HAG to SECTION9.HAG
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FileHashMap _fileEntries;
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};
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struct Resource {
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char name[64];
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Common::SeekableReadStream *stream;
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uint8 *buffer;
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uint8 flags;
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};
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class ResourceManager {
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protected:
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typedef Common::List<Common::SharedPtr<Resource> > ResourceList;
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typedef ResourceList::iterator ResourceIterator;
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ResourceList _resources;
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M4Engine *_vm;
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virtual Common::SeekableReadStream *loadResource(const char *resourceName, bool loadFlag) = 0;
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public:
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ResourceManager(M4Engine *vm): _vm(vm) {};
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virtual ~ResourceManager();
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Common::SeekableReadStream *get(const char *resourceName, bool loadFlag = true);
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void toss(const char *resourceName);
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void purge();
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void dump();
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virtual bool resourceExists(const char *resourceName) = 0;
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Common::SeekableReadStream *openFile(const char *resourceName) { return get(resourceName, false); }
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void changeExtension(char *destName, const char *sourceName, const char *extension) {
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FileSystem::changeExtension(destName, sourceName, extension);
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}
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};
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enum ResourceType {RESTYPE_ROOM, RESTYPE_SC, RESTYPE_TEXT, RESTYPE_QUO, RESTYPE_I,
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RESTYPE_OB, RESTYPE_FONT, RESTYPE_SOUND, RESTYPE_SPEECH, RESTYPE_HAS_EXT, RESTYPE_NO_EXT};
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class MADSResourceManager: public ResourceManager {
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private:
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ResourceType getResourceType(const char *resourceName);
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const char *getResourceFilename(const char *resourceName);
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protected:
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Common::SeekableReadStream *loadResource(const char *resourceName, bool loadFlag);
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public:
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MADSResourceManager(M4Engine *vm): ResourceManager(vm) {};
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bool resourceExists(const char *resourceName);
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};
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class M4ResourceManager: public ResourceManager {
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protected:
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Common::SeekableReadStream *loadResource(const char *resourceName, bool loadFlag);
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public:
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M4ResourceManager(M4Engine *vm);
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~M4ResourceManager();
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bool resourceExists(const char *resourceName);
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private:
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FileSystem *_hfs;
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};
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} // End of namespace M4
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#endif
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