Move in a direction...?

[Lovehina]

Im having a simple problem. Im rotating a scene node, and after rotation trying to move it in the direction its facing. But as I have discovered, when a scenenode is rotated its axis (x,y,z) are not.

So Im wondering if there is a way to rotate the axis of a scene node...?

And if that method doesnt exist in IRRLicht, what is then the simplest and least CPU intensive way to calculate direction...?

[Heizi]

I dont know whether this helps you, but you could save
the angle each time you rotate the scene node. In the beginning
I think the rotation is 0. So if you rotate the Scene Node
you can:
rotation+=(amount you rotate the node)

moving a node can work (for example) like this:
you just get the position of it, here it is point A.
Then you may want to move to point B and calculate
the vector between it:
(B-A).normalize()*speed*time
then just add it to A and set the new position.
you can can leave the time away, if you dont want to code it time based.

[Guest]

But as I have discovered, when a scenenode is rotated its axis (x,y,z) are not.

Have you looked at scenenode->getRotation()?

[Lovehina]

Sorry, I didnt have time to respond. Heizi thank you for your answer but that doesnt help me much. In your case I would have to know the next point to which Im supose to move, but in my case that is pointless.

Have you looked at scenenode->getRotation()?

Please be more specific, I have no idea what you mean with this...

[Acki]

There is a magic file included to the sdk, called Irrlicht.chm !!!
Open it and search for getRotation...

[Lovehina]

I know that! But getRotation only gives me how much a node has rotated in one of its axis, it doesnt give me any direction...!

[Lovehina]

Forget it... I found the answer...

http://irrlicht.sourceforge.net/phpBB2/ ... .php?t=843

[Guest]

There's a great article written by nick_japan in the code snippets section.