2D Movement

NoOne · Post by **NoOne** » Wed Jan 11, 2006 9:53 pm

Hi!

How can I make a object move in any angle in a 2d plane? Example: Start on the upper left and go to the lower right. Go and return, and so on.

Thx!!

Conquistador · Post by **Conquistador** » Wed Jan 11, 2006 11:44 pm

You should look at some of the 2D games or projects in the projects announcement forum, they'll have examples how to do this. Generally, you'll have to update the objects position every frame, figuring out the new position should be done using vectors, and a little math. Check here for some useful math tips. I had something like this for an old pong game I made a while ago, but I don't have it anymore.

NoOne · Post by **NoOne** » Thu Jan 12, 2006 1:48 am

I got it!! But i use another thing. I use another vector for to give me the direction, so i add the difference between the vector´s to make the object walk in the plane.

The right answer is to use sin and cos functions, but this appears to work. If anybody has the answer please tell me.

Thanks!!

krama757 · Post by **krama757** » Fri Jan 13, 2006 5:21 am

Well whats the problem?

All you need is a position, a vector that points to the direction, and a new position.

So if I am at (0,0) and I have a vector pointing to (2,3), I add (2,3) to (0,0) and get a new position....