unity movement 2d code example

Example 1: how to make 2d movement in unity

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

public class movement2D : MonoBehaviour
{
    Rigidbody2D body;

    float horizontal;
    float vertical;

    public float runSpeed = 10.0f;
    
    
    // Start is called before the first frame update
    void Start()
    {
        body = GetComponent<Rigidbody2D>();        
    }

    // Update is called once per frame
    void Update()
    {
        horizontal = Input.GetAxisRaw("Horizontal");
        vertical = Input.GetAxisRaw("Vertical");
    }

    private void FixedUpdate()
    {
        body.velocity = new Vector2(horizontal * runSpeed, vertical * runSpeed);   
    }
}

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);
        
        
        }

    }
}

Example 3: how to move a 2d character in unity

if (moveInput != 0)
{
	velocity.x = Mathf.MoveTowards(velocity.x, speed * moveInput, walkAcceleration * Time.deltaTime);
}
else
{
	velocity.x = Mathf.MoveTowards(velocity.x, 0, groundDeceleration * Time.deltaTime);
}