2D walk cript

Unity Engine
1

Hi
I need help whiv a 2D walk script or well I only have 3D walk script.
I have look on the “2D Gameplay Tutorial” but the 2D script is to complicate.
So i need to help whiv how i can do a 2D walk script whiv just the command left and right and jump.

//txzzo
(If you are from sweden write the anserw on swedish might be easyer to understand)

2

oo and one more thing.
Lets say that the “goal” is to the right than i want the char to always run whiv the nose first so not walk left whiv the tail first

3 
public float maxWalkSpeed;
public float jumpSpeed;

Vector3 playerVelocity;

void Start()
{
	playerVelocity = Vector3.zero;
}

void Update()
{
	playerVelocity.x = Input.GetAxis("Horizontal") * maxWalkSpeed;
	
	if(Input.GetKeyDown(KeyCode.Space))
	{
		playerVelocity.y = jumpSpeed;
	}
	else
	{
		playerVelocity.y = rigidbody.velocity.y;
	}
	
	rigidbody.velocity = playerVelocity;
}

This is the simplest I can think of. You’d need to add a Rigidbody component to your GameObject. The character should fall back to the ground if you have gravity turned on.

4

I get a streang error from it

[Invalid UTF-8] 
Cannot determine the text encoding for argument 34 (Assets/2d g\xe5 .js).
Please add the correct encoding to MONO_EXTERNAL_ENCODINGS and try again.
5

do some one know how i solve this problem??

6

I am not sure how to solve the whole problem or if the script below will work, but I think I know how to get rid of your errors…

This is a C# script that he gave you and you were naming it .js. Create a C# file, name it “walk2D.cs” then copy and paste the following.

using System;
using UnityEngine;

[RequireComponent(typeof(Rigidbody))]
public class Walk2D : MonoBehaviour
{
     public float maxWalkSpeed;
     public float jumpSpeed;

     private Vector3 playerVelocity;
     private Rigidbody rBody;

     void Start()
     {
          playerVelocity = Vector3.zero;
          rBody = GetComponent<Rigidbody>();
     }

     void Update()
     {
      playerVelocity.x = Input.GetAxis("Horizontal") * maxWalkSpeed;
   
      if(Input.GetKeyDown(KeyCode.Space))
      {
          playerVelocity.y = jumpSpeed;
      }
      else
      {
          playerVelocity.y = rigidbody.velocity.y;
      }
   
      rBody.velocity = playerVelocity;
     }
}
7

that one did work but i want it to always go nose first how do i change that??
I have never work whiv C#

8

try changing the “maxWalkSpeed” to a negative number in your properties.

9

But the maxwalkspeed dosent it just change how fast he walk??

10

yeah but if its a negative number then the walk direction will be flipped.

11

Sorry i dont understand what you mean, shod i add some code to the script??

12

There’s a simple transform script you can use in JS. Check the scripting documentation out. Also play with the fps prefab.

13

I get an error saying that velocity isn’t defined… please help

14

Same here, anybody know why?

15

Velocity is part of rigdidbody. You need to get the instance first:

either (dirty): getComponent().velocity

or like this:

public Rigidbody rigid;

public void Start()
{
rigid = GetComponent();
}

[…]

rigid.velocity = …

Make sure you have attatched a rigidbody in the inspector. If you are using 2D Rigidbody, you need to write Rigidbody2D instead of Rigidbody in the script.

16

This was a post from 2010 lol. Yeah the gameobject’s no longer have rigidbody as a public member apparently so you will have to reference the rigidbody in Start before you can use it.

using System;
using UnityEngine;

[RequireComponent(typeof(Rigidbody))]
public class Walk2D : MonoBehaviour
{
     public float maxWalkSpeed;
     public float jumpSpeed;

     private Vector3 playerVelocity;
     private Rigidbody rBody;

     void Start()
     {
          playerVelocity = Vector3.zero;
          rBody = GetComponent<Rigidbody>();
     }

     void Update()
     {
          playerVelocity.x = Input.GetAxis("Horizontal") * maxWalkSpeed;

          if(Input.GetKeyDown(KeyCode.Space))
          {
               playerVelocity.y = jumpSpeed;
          }
          else
          {
               playerVelocity.y = rigidbody.velocity.y;
          }

          rBody.velocity = playerVelocity;
     }
}
17

hey my code doesent work i need help im trying to make my stickfigure walk but i cant i need help

18

Hey,
if I can help you here is a very very very simple script:

using UnityEngine;
using System.Collections;
public class basicmovementunity : MonoBehaviour {
    public float speed;             
    private Rigidbody2D rb2d;     
    void Start()
    {
      
        rb2d = GetComponent<Rigidbody2D> ();
    }
  
    void FixedUpdate()
    {
    
        float moveHorizontal = Input.GetAxis ("Horizontal");
      
        float moveVertical = Input.GetAxis ("Vertical");
    
        Vector2 movement = new Vector2 (moveHorizontal, moveVertical);
      
        rb2d.AddForce (movement * speed);
    }
}
19

im looking for an ad spacebar movement script

20

Please don’t reply to a thread that is nearly ten years old. Make your own thread. It’s FREE!

How to report problems productively in the Unity3D forums:

http://plbm.com/?p=220