Movement Code not working

Questions & Answers
1

Hi guys I have a code that doesn’t seem to be working for 3D I can move left and right but i cannot go forwards or backwards and my jumping is perfectly fine for my purpose. I would like you guys to look at the below script and let me know.

using UnityEngine;
using System.Collections;
public class PlayerMove: MonoBehaviour {
	public float speed = 5f;
	public float jumpSpeed = 8f;
	private float movement = 0f;
	private Rigidbody rigidBody;
	private float move = 0f;
	// Use this for initialization
	void Start () {
		rigidBody = GetComponent<Rigidbody> ();
	}

	// Update is called once per frame
	void Update () {
		movement = Input.GetAxis ("Horizontal");
		move = Input.GetAxis ("Vertical");
		if (movement > 0f) {
			rigidBody.velocity = new Vector2 (movement * speed, rigidBody.velocity.y);
		}
		else if (movement < 0f) {
			rigidBody.velocity = new Vector2 (movement * speed, rigidBody.velocity.y);
		} 
		if (move > 0f) {
			rigidBody.velocity = new Vector2 (move * speed, rigidBody.velocity.z);
		}
		else if (move < 0f) {
			rigidBody.velocity = new Vector2 (move * speed, rigidBody.velocity.z);
		} 
		if(Input.GetButtonDown ("Jump")){
			rigidBody.velocity = new Vector2(rigidBody.velocity.x,jumpSpeed);
		}
	}
}
2

Not Quite sure. You are using a Vector2 to move along Z axis. Vector2 takes X and Y. You should use Vector3 which takes X, Y and Z.

3

You’re using Vector2s, which only define the dimensions x and y, which in Unity 3D space represent left/right and up/down respectively.

You should use a Vector3 to represent the velocity in three dimensional space, it will be more intuitive and account for all three dimensions of movement.

Vector3 movement = Vector3.zero;

void Update()
{
    movement = new Vector3 (InputGetAxis ("Horizontal"), 0.0f, Input.GetAxis ("Vertical"));

    rigidbody.velocity = movement * speed;
}

EDIT:
After reading through your code again, I don’t think you exactly understand what vectors are. Vectors represent a point in space or a direction, depending on how you use them. They don’t associate one value with another, which is how you seem to be using them. I would recommend reading through some of the tutorials to get a better grasp on Vectors.