How to make a movement system similar to super meat boy.

Getting Started
1

I’d like some help with my movement system. Currently, I’m making a game with inspired by games like Give Up and super meat boy. With that said, i want a movement system similar to those games. Basically I want it so that when I let go of a button, the player immediately stops or starts falling if it is mid-air or maybe do a double jump. At the moment this is all of my movement code.

using UnityEngine;

public class PlayerController : MonoBehaviour {

    public GameObject Player;

    public float speed;
    public float JumpHeight;
    //public float FallSpeed;

    private Rigidbody rb;
    private Vector3 Velocity;
    private bool movX;
    private bool grounded;
    private bool isFalling;
   

    void Start () {
        rb = Player.GetComponent<Rigidbody>();
        Velocity = Player.GetComponent<Rigidbody>().velocity;
        movX = false;
       
    }
   
   
    void FixedUpdate () {
        if(Velocity.y <= -0.1){
            grounded = false;
            isFalling = true;
        }
        if(Velocity.y >= 0.1){
            grounded = false;
            isFalling = false;
        }
        if(Velocity.y == 0){
            grounded = true;
        }

        //MoveRight
        if(Input.GetKey("d") || Input.GetKey(KeyCode.RightArrow)){
            rb.isKinematic = false;
            rb.AddForce(10 * speed * Time.deltaTime, 0, 0);
            //Velocity.x = 10 * speed * Time.deltaTime;
            movX = true;
        }
        //MoveLeft
        else if(Input.GetKey("a") || Input.GetKey(KeyCode.LeftArrow)){
            rb.isKinematic = true;
            rb.AddForce(-10 * speed * Time.deltaTime, 0, 0);
            //Velocity.x = -10 * speed * Time.deltaTime;
            movX = true;
        }
        else{
            rb.isKinematic = true;
        }
       

        if(Input.GetKeyDown("w") && grounded == true || Input.GetKeyDown(KeyCode.UpArrow) && grounded == true){
            rb.isKinematic = false;
            rb.AddForce(0, 10 * JumpHeight * Time.deltaTime, 0);
        }
       
       
       
       
       
    }
}

I know a lot of the code is wrong but i put it up here anyways so you guys can have some reference on the problem.
Hopefully someone can help me.

2

Start only runs once.
Think you need to make the following chages

void Start()
{
    rb = Player.GetComponent<Rigidbody>();
}

void FixedUpdate() {
    Velocity = rb.velocity;
    movX = false;

To stop the player you can do somthing like

rb.velocity = Vector3.zero;
rb.angularVelocity = Vector3.zero;

but make sure it only runs once when they user stops pressing a key or the player will stop moving.

3

You might also enjoy this article, where I demonstrate how to make a run & jump system (including fine jump control and double-jump)

4

Hi! I am new in unity and I have a question: Why in the if with key “d” isKinematic = false and in the if with the “a” key
isKinematic = true?

5

Yeah, that’s pretty suspicious. I suspect that that’s not really code you should be trying to learn from. Check out my article. :slight_smile:

6

Hi, i wrote several scripts and attached them to player gameobject to handle player movement like supermeatboy.
i also applied some changes to the rigidbody2D of the player gameobject[quote=“Iqew, post:1, topic: 664951, username:Iqew”]
I’d like some help with my movement system. Currently, I’m making a game with inspired by games like Give Up and super meat boy. With that said, i want a movement system similar to those games. Basically I want it so that when I let go of a button, the player immediately stops or starts falling if it is mid-air or maybe do a double jump. At the moment this is all of my movement code.

using UnityEngine;

public class PlayerController : MonoBehaviour {

    public GameObject Player;

    public float speed;
    public float JumpHeight;
    //public float FallSpeed;

    private Rigidbody rb;
    private Vector3 Velocity;
    private bool movX;
    private bool grounded;
    private bool isFalling;
   

    void Start () {
        rb = Player.GetComponent<Rigidbody>();
        Velocity = Player.GetComponent<Rigidbody>().velocity;
        movX = false;
       
    }
   
   
    void FixedUpdate () {
        if(Velocity.y <= -0.1){
            grounded = false;
            isFalling = true;
        }
        if(Velocity.y >= 0.1){
            grounded = false;
            isFalling = false;
        }
        if(Velocity.y == 0){
            grounded = true;
        }

        //MoveRight
        if(Input.GetKey("d") || Input.GetKey(KeyCode.RightArrow)){
            rb.isKinematic = false;
            rb.AddForce(10 * speed * Time.deltaTime, 0, 0);
            //Velocity.x = 10 * speed * Time.deltaTime;
            movX = true;
        }
        //MoveLeft
        else if(Input.GetKey("a") || Input.GetKey(KeyCode.LeftArrow)){
            rb.isKinematic = true;
            rb.AddForce(-10 * speed * Time.deltaTime, 0, 0);
            //Velocity.x = -10 * speed * Time.deltaTime;
            movX = true;
        }
        else{
            rb.isKinematic = true;
        }
       

        if(Input.GetKeyDown("w") && grounded == true || Input.GetKeyDown(KeyCode.UpArrow) && grounded == true){
            rb.isKinematic = false;
            rb.AddForce(0, 10 * JumpHeight * Time.deltaTime, 0);
        }
       
       
       
       
       
    }
}

I know a lot of the code is wrong but i put it up here anyways so you guys can have some reference on the problem.
Hopefully someone can help me.
[/quote]

9017416–1243417–Supermeatboy movement mechanics.rar (3.21 KB)
9017416--1243420--Supermeatboy rigidbody2D settings.png

7

My Bolds.

Watch yer spelling when writing code and stuff, it’s super sensitive.