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MOHAWK: Add support for DOS v2 archives (CSWorld Deluxe)

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svn-id: r54912
This commit is contained in:
Matthew Hoops 2010-12-14 22:58:51 +00:00
parent 3a5c8e6cfa
commit 0c677aacde
2 changed files with 60 additions and 2 deletions
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49
engines/mohawk/resource.cpp
View File

@ -473,4 +473,53 @@ int LivingBooksArchive_v1::getIDIndex(int typeIndex, uint16 id) {
return -1; // not found
}
// Partially based on the Prince of Persia Format Specifications
// See http://sdfg.com.ar/git/?p=fp-git.git;a=blob;f=FP/doc/FormatSpecifications
// However, I'm keeping with the terminology we've been using with the
// later archive formats.
bool DOSArchive_v2::open(Common::SeekableReadStream *stream) {
close();
uint32 typeTableOffset = stream->readUint32LE();
uint16 typeTableSize = stream->readUint16LE();
if (typeTableOffset + typeTableSize != (uint32)stream->size())
return false;
stream->seek(typeTableOffset);
_typeTable.resource_types = stream->readUint16LE();
_types = new OldType[_typeTable.resource_types];
for (uint16 i = 0; i < _typeTable.resource_types; i++) {
_types[i].tag = stream->readUint32LE();
_types[i].resource_table_offset = stream->readUint16LE();
debug(3, "Type[%02d]: Tag = \'%s\' ResTable Offset = %04x", i, tag2str(_types[i].tag), _types[i].resource_table_offset);
uint32 oldPos = stream->pos();
// Resource Table/File Table
stream->seek(_types[i].resource_table_offset + typeTableOffset);
_types[i].resTable.resources = stream->readUint16LE();
_types[i].resTable.entries = new OldType::ResourceTable::Entries[_types[i].resTable.resources];
for (uint16 j = 0; j < _types[i].resTable.resources; j++) {
_types[i].resTable.entries[j].id = stream->readUint16LE();
_types[i].resTable.entries[j].offset = stream->readUint32LE() + 1; // Need to add one to the offset to skip the checksum byte
_types[i].resTable.entries[j].size = stream->readUint16LE();
stream->skip(3); // Skip the useless flags
debug (4, "Entry[%02x]: ID = %04x (%d)\tOffset = %08x, Size = %08x", j, _types[i].resTable.entries[j].id, _types[i].resTable.entries[j].id, _types[i].resTable.entries[j].offset, _types[i].resTable.entries[j].size);
}
stream->seek(oldPos);
debug (3, "\n");
}
_mhk = stream;
return true;
}
} // End of namespace Mohawk

13
engines/mohawk/resource.h
View File

@ -214,13 +214,13 @@ public:
bool hasResource(uint32 tag, uint16 id);
bool hasResource(uint32 tag, const Common::String &resName) { return false; }
bool open(Common::SeekableReadStream *stream);
virtual bool open(Common::SeekableReadStream *stream);
Common::SeekableReadStream *getResource(uint32 tag, uint16 id);
Common::SeekableReadStream *getResource(uint32 tag, const Common::String &resName) { return 0; }
uint32 getOffset(uint32 tag, uint16 id);
uint16 findResourceID(uint32 type, const Common::String &resName) { return 0xFFFF; }
private:
protected:
struct OldType {
uint32 tag;
uint16 resource_table_offset;
@ -234,10 +234,19 @@ private:
} resTable;
} *_types;
private:
int getTypeIndex(uint32 tag);
int getIDIndex(int typeIndex, uint16 id);
};
class DOSArchive_v2 : public LivingBooksArchive_v1 {
public:
DOSArchive_v2() : LivingBooksArchive_v1() {}
~DOSArchive_v2() {}
virtual bool open(Common::SeekableReadStream *stream);
};
} // End of namespace Mohawk
#endif