Noob: How do I move a node in a forward direction?

[robpearmain]

Hi,

My node is at position(0,0,0)
It is rotated so that node.Rotation.Y=45

I want it to move forward in that direction by 2

How can I do that?

Cheers

[robpearmain]

Code: Select all

        public void Move(ISceneNode node, float speed)
        {

            Vector3D v = node.Position;
            Vector3D r = node.Rotation;

            v.X = v.X + (float)((Math.Cos(r.Y * 3.14159265 / 180) * speed));
            v.Z = v.Z - (float)(Math.Sin(r.Y * 3.14159265 / 180) * speed);

            node.Position = v; 


        }

[DeusXL]

There may be a problem with more complex movements/rotations... I prefer (with irrlicht) to use Node.AbsoluteTransformation :

Code: Select all

Vector3D pos = Node.Position;
Matrix4 mat = Node.AbsoluteTransformation;
pos += new Vector3D(mat.get_M(0, 0) * fwdmov * coeff,
                   0,
                   mat.get_M(2, 0) * fwdmov * coeff);
Node.Position = pos;

Where fwdmov is a float reprensenting the amount of movement and coeff may be used for time synchronisation... (then your "speed" is equal to "fwdmov * coeff")

[robpearmain]

Thanks

[needforhint]

set the node as a child of camera, thus child is placed ralativly to his parent, and the parent iz the zero coordinate for that relative space. thus if you higher lover z value it will move from you, as you can see in my example here http://www.medeal.sk/irr/newstress.zip