thirdparty/scummvm
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XEEN: Implemented dynamic data loading for new games

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This commit is contained in:
Paul Gilbert 2015-01-02 11:01:41 -10:00
parent 971a70a2b3
commit feacce66b9
6 changed files with 136 additions and 75 deletions
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52
engines/xeen/files.cpp
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@ -29,45 +29,8 @@
namespace Xeen {
/**
* Xeen CC file implementation
*/
class CCArchive : public Common::Archive {
private:
/**
* Details of a single entry in a CC file index
*/
struct CCEntry {
uint16 _id;
uint32 _offset;
uint16 _size;
CCEntry() : _id(0), _offset(0), _size(0) {}
CCEntry(uint16 id, uint32 offset, uint32 size)
: _id(id), _offset(offset), _size(size) {
}
};
Common::Array<CCEntry> _index;
Common::String _filename;
uint16 convertNameToId(const Common::String &resourceName) const;
void loadIndex(Common::SeekableReadStream *stream);
bool getHeaderEntry(const Common::String &resourceName, CCEntry &ccEntry) const;
public:
CCArchive(const Common::String &filename);
virtual ~CCArchive();
// Archive implementation
virtual bool hasFile(const Common::String &name) const;
virtual int listMembers(Common::ArchiveMemberList &list) const;
virtual const Common::ArchiveMemberPtr getMember(const Common::String &name) const;
virtual Common::SeekableReadStream *createReadStreamForMember(const Common::String &name) const;
};
CCArchive::CCArchive(const Common::String &filename): _filename(filename) {
CCArchive::CCArchive(const Common::String &filename, bool encoded):
_filename(filename), _encoded(encoded) {
File f(filename);
loadIndex(&f);
}
@ -107,9 +70,11 @@ Common::SeekableReadStream *CCArchive::createReadStreamForMember(const Common::S
byte *data = new byte[ccEntry._size];
f.read(data, ccEntry._size);
// Decrypt the data
for (int i = 0; i < ccEntry._size; ++i)
data[i] ^= 0x35;
if (_encoded) {
// Decrypt the data
for (int i = 0; i < ccEntry._size; ++i)
data[i] ^= 0x35;
}
// Return the data as a stream
return new Common::MemoryReadStream(data, ccEntry._size, DisposeAfterUse::YES);
@ -192,6 +157,9 @@ bool CCArchive::getHeaderEntry(const Common::String &resourceName, CCEntry &ccEn
/*------------------------------------------------------------------------*/
/**
* Instantiates the resource manager
*/
void FileManager::init(XeenEngine *vm) {
Common::File f;