Thanks for the help guys, Jdean300 has managed to solve my problem. I do understand your code now BeerNuts, and will try to rewrite it your way and see if I can get the same result as Jdean300 (which is working correctly).

Thanks again guys, you've been great help!

Mike

The method I provided handles things like a player jumping up and right, and hitting a wall, the player will stop going right, but will continue to move up, then down, like sliding against a wall.

FWIW, I've moved to using a 2d physics library to handle all my movements, collision detection, and collision responses. Personally, I use chipmunk-physics, but others use box2d, both are good, and it makes writing 2d games Sooooo much easier.

In my Signature, the link to my old blog details making a top-down 2d game using chipmunk-physics if you want to check it out.

o you think it's worth the time to and frustration to struggle with the collision and physics or should I not bother wasting time and just switch to the library you recommended?

Up to you really. There's much to be learned if you code the movement and collisions yourself, no doubt. But, it's almost certainly going to be very poor compared to the solutions offered by these third party libraries; they can do some really cool things. So, if you want to dive more into the game making, then use the physics library.