Audio System coming along

Some changes were made to the resource cache as based on Mike McShaffry's "Game Coding Complete 3rd Ed.", an excellent games programming book may I add. The resource cache is now much more flexible and allows it to maintain things like D3D Textures for sprites. These changes were done to facilitate the introduction of the sound component which seems to be coming along nicely.

I am currently planning to support 3 audio types, uncompressed WAV, OGG and MP3. My plan is to stream music and large audio files straight from the harddrive. How this will work in the context of the resource cache remains to be seen. One option is to leave music files seperate from the resource cache, although I'm not too keen on this. The only other option is to somehow stream the music from the compressed zip that makes up the resource files. This seems like a difficult job however, since I'll essentially have to decompress the audio twice, one from the zip and secondly from Mp3 or whatever format into raw PCM data that can then be used by the underlying audio API.

The sound will be done on windows using XAudio2. DirectSound seems to be one the way out now and XAudio2 is also cross-compatible with the X-Box 360 which is a bonus If I want to port it (meaning I can leave most of the audio code intact). I haven't decided on the API's for other platforms yet, but I'll cross that bridge when I come to it.