iOS control

Unity Engine
1

Hellou guys. I need help from you. I have been struggling with my problem several days. What I need is to make a control (virtual dpad) for my game (space 3D game). I already have control for mouse and keybord. I need something like this

http://www.youtube.com/watch?v=kBlmbJe6k-o

I do not know how to draw virtual joystick on screen and how to take values from it (also speeding up and down as on the video)
here is my control script

using UnityEngine;
using System.Collections;

public class FPSMouseFlight : MonoBehaviour
{

	public float moveSpeed = 6.0f;
	public float rotationSpeedX = 2;
	public float rotationSpeedY = 2;
	public float maxSpeed = 60.0f;
	public Transform shipModel;
	static public float actualSpeed = 0.0f;
	public Scale[] engineScale;

	private Vector3 moveDirection = Vector3.zero;
	private float baseRotationX = 0.0f;
	private float baseRotationY = 0.0f;
	private float oldSpeed = 0.0f;
	
	void Start()
	{
		for (int i = 0; i < engineScale.Length; i++) {
				engineScale[i].scale = 0.15f;
				engineScale[i].UpdateScale();
			}
	}
	
	void OnDestroy()
	{
		for (int i = 0; i < engineScale.Length; i++) {
				engineScale[i].scale = 1f;
				
		}
	}

	void FixedUpdate ()
	{
		
		actualSpeed = Mathf.Clamp (actualSpeed + Input.GetAxis ("Vertical"), 0, maxSpeed);
		if (actualSpeed != oldSpeed) {
			for (int i = 0; i < engineScale.Length; i++) {
				engineScale[i].scale = actualSpeed / maxSpeed * (0.35f) + 0.15f;
				engineScale[i].UpdateScale();
			}
			oldSpeed = actualSpeed;
					}
		moveDirection = new Vector3 (0, 0, actualSpeed);
		moveDirection = transform.TransformDirection (moveDirection);
		moveDirection *= moveSpeed;
		
		baseRotationX = (Input.mousePosition.x - Screen.width * 0.5f) * 0.001f * rotationSpeedX;
		baseRotationY = (Input.mousePosition.y - Screen.height * 0.5f) * 0.001f * rotationSpeedY;

		transform.Rotate (Vector3.up, baseRotationX);
		transform.Rotate (Vector3.left, baseRotationY);
		
		float angleZ = baseRotationX * 30;
		float angleX = baseRotationY * 30;
		
		shipModel.localEulerAngles = new Vector3 (angleX, 180, angleZ); // Rotating ship
		
		// Move the controller
		//CharacterController controller  = (CharacterController)GetComponent("CharacterController");
		//controller.Move(moveDirection * Time.deltaTime);
		
		this.transform.position += moveDirection * Time.deltaTime;
		
	}
	
	
}

More then just a script I would appreciate the “way” how to achieve that

2

I would just create an image that is one section if the d pad, place it on an object, attach a collider. Then in Update() use a raycast hit to determine if the user is touching the pad. If true, move player.

There is plenty of documentation. Look up “input touch”, “raycast hit”.