My character won't move

Questions & Answers
1

I am very new to Unity and C# and I was following a simple tutorial (2-3 years old) I used the exact same code as they did but the player (a ball) won’t even move left and right. Here is the script:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class AddPlayerControlledVelocity : MonoBehaviour
{
    [SerializeField]
    Vector3 v3Force;
    
    [SerializeField]
    KeyCode keypositive;
    [SerializeField]
    KeyCode keynegative;
    void FixedUpdate()
    {
        if (Input.GetKey(keypositive))
            GetComponent<Rigidbody>().velocity += v3Force;
        
        if (Input.GetKey(keypositive))
            GetComponent<Rigidbody>().velocity -= v3Force;
    }
2

At first glance it seems like you have accidentally written out the following code twice:
if (Input.GetKey(keypositive))
GetComponent().velocity += v3Force;

as a result of this, when you press the key set as positive nothing happens as they cancel each other out while pressing the negative key also does nothing as it isn’t scripted to do anything.

Just change the second one of the code mentioned above to: if(Input.GetKey(keynegative))
It should work! Hope that helps! ^-^