Мимокрокодил

using UnityEngine;

[RequireComponent(typeof(CharacterController))]
public class PlayerMove3D : MonoBehaviour {

	CharacterController controller;

	Vector3 input, velocity;

	public float moveSpeed = 10f;
	public float jumpPower = 10f;
	public float gravity = 20f;

	public Transform groundCheckPoint;
	public float groundCheckRadius;
	public LayerMask groundLayer;

	private void Start() => controller = GetComponent<CharacterController>();

	private void Update() {
		input.x = Input.GetAxis("Horizontal");
		input.z = Input.GetAxis("Vertical");
		input = input.normalized;

		bool grounded = Physics.CheckSphere(groundCheckPoint.position, groundCheckRadius, groundLayer);

		if (grounded && velocity.y < 0)
			velocity.y = -2f;

		if (Input.GetKeyDown(KeyCode.Space) && grounded) {
			Jump(Mathf.Sqrt(2f * gravity * jumpPower));
		}
	}

	private void FixedUpdate() {
		Vector3 moveVector = transform.right * input.x + transform.forward * input.z;
		controller.Move(moveVector * moveSpeed * Time.fixedDeltaTime);

		velocity.y -= gravity * Time.fixedDeltaTime;
		controller.Move(velocity * Time.fixedDeltaTime);
	}

	private void OnControllerColliderHit(ControllerColliderHit hit) {
		// TODO collisions
	}
}