simple unity 3d movement script code example

Example 1: unity 3d movement script 2020

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class PlayerController : MonoBehaviour
{
    CharacterController characterController;
    public float MovementSpeed =1;
    public float Gravity = 9.8f;
    private float velocity = 0;
 
    private void Start()
    {
        characterController = GetComponent<CharacterController>();
    }
 
    void Update()
    {
        // player movement - forward, backward, left, right
        float horizontal = Input.GetAxis("Horizontal") * MovementSpeed;
        float vertical = Input.GetAxis("Vertical") * MovementSpeed;
        characterController.Move((Vector3.right * horizontal + Vector3.forward * vertical) * Time.deltaTime);
 
        // Gravity
        if(characterController.isGrounded)
        {
            velocity = 0;
        }
        else
        {
            velocity -= Gravity * Time.deltaTime;
            characterController.Move(new Vector3(0, velocity, 0));
        }
    }
}

Example 2: 3d movement unity

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ThirdPersonMovement : MonoBehaviour
{

   



 public CharacterController controller;
    public Transform cam;


    public float speed = 6f;


    public float turnSmoothTime = 0.1f;
    float turnSmoothVelocity;   




    void Update()
    {

        float horizontal = Input.GetAxisRaw("Horizontal");
        float vertical = Input.GetAxisRaw("Vertical");
        Vector3 direction = new Vector3(horizontal, 0f, vertical).normalized;

        if (direction.magnitude >= 0.1f)
        {

            float targetAngle = Mathf.Atan2(direction.x, direction.z) * Mathf.Rad2Deg + cam.eulerAngles.y;                       
            float angle = Mathf.SmoothDampAngle(transform.eulerAngles.y, targetAngle, ref turnSmoothVelocity, turnSmoothTime);
            transform.rotation = Quaternion.Euler(0f, angle, 0f);

            Vector3 moveDir = Quaternion.Euler(0f, targetAngle, 0f) * Vector3.forward;
            controller.Move(moveDir.normalized * speed * Time.deltaTime);
        
        
        }

    }
}