Add Character Control and Animation to Our Hero/Heroine - Unity 4 Game Development - page 289

(_vDirection * _forward);
if (_targetDirection != Vector3.zero) {
_moveDirection = Vector3.Slerp(_moveDirection,
_targetDirection, rotationSpeed * Time.deltaTime);
_moveDirection = _moveDirection.normalized;
} else {
_moveDirection = Vector3.zero;
}
}
Note
Vector3.Slerp() is the function that we can use to interpolate between two
vectors spherically by the amount of time, and the return vector's magnitude will
be the difference between the magnitudes of the first vector and the second vector.
This function is usually used when we want to get the smooth rotation from one
vector to another vector in a fixed amount of time. You can see more details at ht-
tp://docs.unity3d.com/Documentation/ScriptReference/Vector3.Slerp.html .
6. We are still in the Update() function. Next, we will calculate _vertic-
alSpeed and _inAirTime by checking whether our character is grounded.
Let's continue from the previous step and put the highlighted code as follows:
// Unity JavaScript user:
function Update () {
…
} else {
_moveDirection = Vector3.zero;
}
if (IsGrounded) {
_isJumping = false;
_verticalSpeed = 0.0f;
_inAirTime = 0.0f;
_inAirStartTime = Time.time;
} else {
_verticalSpeed -= GRAVITY * Time.deltaTime;
_inAirTime = Time.time - _inAirStartTime;
}