Rotating kinematic body; can?t move() along local axis

riley-attack

Ive been trying to make a kinematic character controller that will move forward and backward, and strafe left and right when pushing the respective arrow keys.  I also want the character to rotate to the left and to the right (pivoting along the Y axis) when the mouse is moved either direction respectively.  I also have the camera parented to the character, so as the character rotates, the camera moves to stay to the back of the character.<br /><br />So far I have been able to implement all of the above.  I would also like that for when the character rotates, the direction he faces becomes the direction he heads to when the up arrow is pressed.  I think the issue is that the move() function is still moving my character forward in global space.  I have tried setting rotation with the global rotation method and also parenting the character to a spatial node that would handle the rotation to no avail.  Anyone know how to make a character move forward along its local axes after rotation?<br />

Ace_Dragon

I believe what you are looking for is a few levels up in the [i]Spatial[/i] class (which I believe can be used with all 3D body types).You would make use of the [b]translate(Vector3)[/b] function in your character's movement script as a result.

riley-attack

So I tested moving the character with the translate function and you were right.  The direction the character is facing is the direction he goes when the forward button is pressed.  However, moving a game character with translation is problematic because the character's movement isn't stopped by colliders, as compared to the move() function which does respect colliders.  The first time I switched to the translate function, the applied gravity from the script (which is just a modification of the 3D Kinematic Character Controller demo) forced the character below the level.

Ace_Dragon

Well, I don't think the Kinematic character class comes with a way to move the character in local space out of the box, at least not in a way that can be expressed with just one function.More likely, you will need to get the character's rotation (in radians) and then use a little math to remap the values so the max value is 1 and the min value is -1. Then in the move function, you would multiply the X and Z speeds with the rotation values.

riley-attack

Fair enough, thanks for the help. 

del

I had pretty much the same problem with a rigid body in character mode. I struggled some time with it and than I parented a spacial note to the rigid body (with some distance and in the direction I wanted to move) and took the position (of the spacial) as reference for the moving direction.This worked so far, but now I'm wondering if Ace Dragon's solution would be more accurate / stable or faster and would it be worthy go back and change it. I'm not really good at this math stuff. :-X