Make Gameobject Stand On Surface Facing Certain Direction
- by Julian
I want to make a biped character stand on any surface I click on.
Surfaces have up vectors of any of positive or negative X,Y,Z. So imagine a cube with each face being a gameobject whose up vector pointing directly away from the cube.
If my character is facing "forward" and I click on a surface which is to the left or right of me ( left or right walls), I want my character to now be standing on that surface but still be facing in the direction he initially was. If I click on a wall which is in the forward path of my character i want him to now be standing on that surface and his forward to now be what was once "up" relative to my character. Here is the code I am working with now.
void Update()
{
if (Input.GetMouseButtonUp (0)) {
RaycastHit hit;
var ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if (Physics.Raycast(ray, out hit)) {
Vector3 upVectBefore = transform.up;
Vector3 forwardVectBefore = transform.forward;
Quaternion rotationVectBefore = transform.rotation;
Vector3 hitPosition = hit.transform.position;
transform.position = hitPosition;
float lookDifference = Vector3.Distance(hit.transform.up, forwardVectBefore);
if(Vector3.Distance(hit.transform.up, upVectBefore) < .23) //Same normal
{
transform.rotation = rotationVectBefore;
}
else if(lookDifference > 1.412 && lookDifference <= 1.70607) //side wall
{
transform.up = hit.transform.up;
transform.forward = forwardVectBefore;
}
else //head on wall
{
transform.up = hit.transform.up;
transform.forward = upVectBefore;
}
}
}
}
The first case "Same normal" works fine, however the other two do not work as I would like them to. Sometimes my character is laying down on the surface or on the wrong side of the surface. Does anyone know nice way of solving this problem?
