Here is a simple function or method to help you decide if two circles have collided. Of course using circles as a collision method has its downfalls, but also has its good points.

Of course the code above is written for C#, but can be easily converted into other languages. I used this function to [...]

Here is a simple code snippet i wrote to make a clickable sprite in XNA (C#). I am sorry that i have not commented it. I am lazy and can’t really be bothered to comment much.

How does it work?

Well the main idea behind the code is that you can simply create a Rectangle [...]