public class ExampleClass : MonoBehaviour
CharacterController characterController;
public float speed = 6.0f;
public float jumpSpeed = 8.0f;
public float gravity = 20.0f;
private Vector3 moveDirection = Vector3.zero;
characterController = GetComponent<CharacterController>();
if (characterController.isGrounded)
moveDirection = new Vector3(Input.GetAxis("Horizontal"), 0.0f, Input.GetAxis("Vertical"));
if (Input.GetButton("Jump"))
moveDirection.y = jumpSpeed;
moveDirection.y -= gravity * Time.deltaTime;
characterController.Move(moveDirection * Time.deltaTime);