Answers for "unity 2d jump movement script"

how to make player jump unity 2d

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

public class example : MonoBehaviour
{    // **** ALSO HAS CODE FOR PREVENTING MULTIPLE JUMPS ****

    public float jumpHeight = 1; // the Height you want the Player to Jump 

    Rigidbody2D myrb; // To access the Rigidbody Component


    bool isGrounded; // to check if player is on the Ground or not to Prevent from jumping more than once
    void Start()
    {

        myrb = GetComponent<Rigidbody2D>();

    }


    void Update()
    {

   // basically telling that if player is touching the ground,then allow player to Jump, if not, Don't allow Jumping
        if (isGrounded && myrb.velocity.y <= 0) 
        {
            if (Input.GetButtonDown("Jump"))
            {

                myrb.velocity = new Vector2(myrb.velocity.x, 1 * jumpHeight);
            }
        }
    }
   
   
    private void OnCollisionEnter2D(Collision2D collision)
    {
        
        if(collision.gameObject.CompareTag("yourGroundsTagnamehere"))
        {
            isGrounded = true;

        }

    }

    private void OnCollisionExit2D(Collision2D collision)
    {

        isGrounded = false;

    }

}

unity movement script 2d

//This is a script for a 2D plataformer type of movement.
//This script includes the movement, flipping the player and a ground check if you need one.
/*
  This is a two in one grepper answer, 
  the script flips the player by rotating it,
  and when it rotates, if the camera 
  is attached to the player the normal way, 
  its going to rotate the hole camera.
  and the only way to fix that bug is by making it so 
  the camera follows you with code, 
  if you scroll all the way down you can find the code that makes 
  the camera follow the player.
*/

using UnityEngine;

public class PlayerController : MonoBehaviour
{
    public float movementSpeed = 1;
    private Rigidbody2D rb;
    public float JumpForce = 1;
    //If the character flipps the wrong way change this variable to false.
    public bool facingRight = true;
    public Camera cam;
    public bool isGrounded = false;
    public Transform GroundCheck;
    public LayerMask Ground;

    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
    }

    void Update()
    {
        Xmovement();
        GroundCheck();
        Jump();
        
        void Xmovement()
        {

         var movement = Input.GetAxis("Horizontal");
         transform.position += new Vector3(movement, 0, 0) * Time.deltaTime * movementSpeed;
                
            if (Input.GetAxis("Horizontal") > 0)
            {
                facingRight = false;
            }
            if (Input.GetAxis("Horizontal") < 0)
            {
                facingRight = true;
            }
            //Flipping the player
            if (facingRight) {
            transform.eulerAngles = new Vector3(0, 180, 0);
            }

        }

        void Jump()
        {
            if (Input.GetButtonDown("Jump") && Mathf.Abs(rb.velocity.y) < 0.001f)
            {
                rb.AddForce(new Vector2(0, JumpForce), ForceMode2D.Impulse);
            }
        }

        void GroundCheck()
        {
            if (Mathf.Abs(rb.velocity.y) < 0.001f)
            {
                isGrounded = true;
            }

            else
            {
                isGrounded = false;
            }
        }
    }
}  





/*
	Read the commented lines on the top of the answer for context.
*/
using UnityEngine;

public class CameraFollow : MonoBehaviour
{
    public Camera cam;

    public Transform subject;

    // Update is called once per frame
    void LateUpdate()
    {
        cam.transform.position = subject.transform.position ;
    }
}