You guys are AWESOME! I realised i'd gone about all the physics the wrong way after reading a tutorial on GameDev.net. I've recoded the relevent sections - and changed the coordinate system like Meep-eep suggested, and it all works great so far!
I'm wacking in the planet-collision stuff now, which is a lot easier with the new code. If anyone wants to become a BETA tester when I finish the Melee, give me a yell.
I might as well say this now before anyone kills me later; i'm not sure if this will work on other platforms as is. I'm using a lot of 3rd party libraries to make the graphics drawing easier, and AFAIK it'll work on Win and Linux but i'll need somone to contact me that has another OS so I can try it out (they'll need to know how to compile libraries and projects).
This is not exactly what I was expecting this thread to look like when I left on friday. Oh well... Just to throw the thread back on topic, I was looking for ship ideas for my game... Or do you guys want me to finish a working demo before you throw your ideas in... I could probably do that...