A fps character controller with joystick

void ControlCharacter(float horizontal, float vertical)
{
	// Create a vector that the controller's velocity should match
	Vector3 targetDirection = new Vector3(horizontal, 0f, vertical);

	// Create a rotation based on the input
	Quaternion targetRotation = Quaternion.LookRotation(targetDirection, Vector3.up);

	// Lerp the player's rotation to match the target's rotation
	transform.rotation = Quaternion.Lerp(transform.rotation, targetRotation, rotateSpeed * Time.deltaTime);
}