How to roll a sphere in all driections?

Questions & Answers
1

Hi! I’m new to Unity, I’m trying to roll a sphere in all directions. currently i can just move it front and back motion, using the A and D keys respectively. i want to roll the sphere in such a way that,W-front,S-back,A,D-left and right…
please help!
Here is the code

using UnityEngine;

using System.Collections;

public class NewBehaviourScript : MonoBehaviour {

	public float rotationSpeed = 100;
	public int jumpHeight = 8;
	private bool isFalling = false;
	void Update () 
	{
		//Handle ball rotation.
		
		float rotation = Input.GetAxis("Horizontal")* rotationSpeed;

		rotation*= Time.deltaTime;

		rigidbody.AddRelativeTorque (Vector3.back * rotation);
		
		if (Input.GetKeyDown (KeyCode.Space) && isFalling == false) 
		{
			Vector3 v = rigidbody.velocity;
			v.y = jumpHeight;
			rigidbody.velocity = v;
			
		}
		isFalling = true;
	}
	
	void OnCollisionStay()
	{
		isFalling = false;
	}
	
	
}
2

Your code is only sampling a single input axis - the horizontal one:

float rotation = Input.GetAxis("Horizontal")* rotationSpeed;

You should the same thing for the Vertical axis and combine the two of those in a single Vector3 and use that to calculate the rotation.

In addition you are confusing yourself, because you are actually taking the horizontal axis value (which is usually the X axis) and you multuply it by a Vector3 pointing “back” (0,0,-1)

rigidbody.AddRelativeTorque (Vector3.back * rotation);

This transforms “horizontal” input into a “vertical” one. To fix this, store the input axes values in two floats:

float inputX = Input.GetAxis("Horizontal");
float inputZ = Input.GetAxis("Vertical");

and construct a vector

Vector3 rotatioVector = new Vector3(inputX, 0, inputZ);

And use that to apply the rotation and torque to your spere.

3

so i did as u asked but
now it only moves back(for both W,S keys)
and left (for both A,D keys)
I think I’m doing something wrong i guess.

here is the code

        float rotation1 = Input.GetAxis ("Horizontal") * rotationSpeed;
	    float rotation2 = Input.GetAxis ("Vertical") * rotationSpeed;
	    float inputX = Input.GetAxis ("Horizontal");
	    float inputY = Input.GetAxis ("Vertical");
	    Vector3 rotationV = new Vector3(inputX, 0, inputY);
  		    rotation1 *= Time.deltaTime;
	    rotation2 *= Time.deltaTime;  
        rigidbody.AddRelativeTorque ( rotationV * rotation1);
	    rigidbody.AddRelativeTorque (rotationV * rotation2);