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# Unity Unity C# Jump Code Was Working. Now It's Not.

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Hey,

So I wrote this based on some guides/tutorials on the internet. Pretty proud that I could understand all of the code I wrote. Anyways, I got to making the 'jump' system work. I then attempted to add a way to make it so the player could not jump an infinite amount of times. I didn't finish, and screwed up a few times. I used a backup of the code and copied + pasted it in. Now it's suddenly not working. A + D movement works fine, but SPACE does not cause the player to jump. Please help:

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour
{

public float moveSpeed = 5;
public float jumpHeight = 100;
public Rigidbody2D rigidBody;

// Use this for initialization
void Start()
{
rigidBody = GetComponent<Rigidbody2D>();
}

// Update is called once per frame
void Update()
{
if (Input.GetAxisRaw("Horizontal") > 0.5f || Input.GetAxisRaw("Horizontal") < -0.5f)
{
transform.Translate(new Vector3(Input.GetAxisRaw("Horizontal") * moveSpeed * Time.deltaTime, 0f, 0f));
}

if (Input.GetKeyDown(KeyCode.W))
{
}
}
}

Edited by Ovicior

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Alright, I figured it out.

Never make your variables in Unity public. The public settings were taking priority over the code, messing everything up.

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Public variables are there to allow artists to set up values on editor, your rigidbody has no sense to be public since it's only used for this class.

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It could've been that his jumpheight was set to 0 as a public variable, or some low number, or the mass on the object was changed, so the jumpheight was then not a sufficient enough force to cause the player to jump.

Depending on your game, I kind of like doing AddForce and adding the mass into the equation ( so AddForce( someForce * rigidbody.Mass), so that if I tweak the mass for some other reason, my jump height stays relatively stable.  Though in my case it was for cannon shell lobbing, I wanted them to have greater impact on their targets, but every time I tweaked them, the shells would travel slower, which I didn't want.