void Start()
{
rig = GetComponent <XRRig>();
footsteps = GetComponent <AudioSource>();
// Vector *pointing* towards origin. We remove the z axis because we
// don't want to be pushed from the origin in the z axis, only in x/y.
upAxis = (new Vector3(0, 0, 0) - rig.transform.position).normalized;
upAxis = new Vector3(upAxis.x, upAxis.y, 0);
rig.MatchRigUp(upAxis);
}
private void FixedUpdate()
{
upAxis = (new Vector3(0, 0, 0) - rig.transform.position).normalized;
upAxis = new Vector3(upAxis.x, upAxis.y, 0);
rig.MatchRigUp(upAxis);
// Movement relative to the local forward direction of the camera
Quaternion headYaw = Quaternion.Euler(0, rig.cameraGameObject.transform.localEulerAngles.y, 0);
Vector3 direction = headYaw * new Vector3(inputAxis.x, 0, inputAxis.y);
if (movementAllowed)
{
if (Mathf.Abs(inputAxis.x) > 0.001 || Mathf.Abs(inputAxis.y) > 0.001)
{
if (fallingSpeed > -1)
{
if (!footsteps.isPlaying)
{
footsteps.Play();
}
}
else
{
if (footsteps.isPlaying)
{
footsteps.Stop();
}
}
transform.Translate(direction * Time.fixedDeltaTime * speed);
}
else
{
if (footsteps.isPlaying)
{
footsteps.Stop();
}
}
}
else
{
if (footsteps.isPlaying)
{
footsteps.Stop();
}
}
bool isGrounded = DetermineIfGrounded();
// v(t) = 0 if grounded, else v(t) = v0 + at.
if (isGrounded)
{
fallingSpeed = 0;
}
else
{
fallingSpeed += Physics.gravity.y * Time.fixedDeltaTime;
}
// since up is a vector in world space, gravity needs to be applied in world space
transform.Translate(rig.transform.up * fallingSpeed * Time.fixedDeltaTime, Space.World);
MaintainAboveGround();
}