Flycam

//****** Donations are greatly appreciated.  ******
//****** You can donate directly to Jesse through paypal at  https://www.paypal.me/JEtzler   ******

var mainSpeed : float = 100.0; //regular speed
var shiftAdd : float = 250.0; //multiplied by how long shift is held.  Basically running
var maxShift : float = 1000.0; //Maximum speed when holdin gshift
var camSens : float = 0.25; //How sensitive it with mouse
private var lastMouse = Vector3(255, 255, 255); //kind of in the middle of the screen, rather than at the top (play)
private var totalRun : float  = 1.0;

function Start (){
    Screen.showCursor = false;
}

function Update () {

    lastMouse = Input.mousePosition - lastMouse ;
    lastMouse = Vector3(-lastMouse.y * camSens, lastMouse.x * camSens, 0 );
    lastMouse = Vector3(transform.eulerAngles.x + lastMouse.x , transform.eulerAngles.y + lastMouse.y, 0);
    transform.eulerAngles = lastMouse;
    lastMouse =  Input.mousePosition;

        var f : float = 0.0;
    var p = GetBaseInput();

    if (Input.GetKey (KeyCode.LeftShift)){

        totalRun += Time.deltaTime;
        p  = p * totalRun * shiftAdd;
        p.x = Mathf.Clamp(p.x, -maxShift, maxShift);
        p.y = Mathf.Clamp(p.y, -maxShift, maxShift);
        p.z = Mathf.Clamp(p.z, -maxShift, maxShift);
        }
    else{
            totalRun = Mathf.Clamp(totalRun * 0.5, 1, 1000);
        p = p * mainSpeed;
    }

    p = p * Time.deltaTime;

    if (Input.GetKey(KeyCode.Space)){ //If player wants to move on X and Z axis only

        f = transform.position.y;
        transform.Translate(p);
        transform.position.y = f;
    }
    else{
        transform.Translate( p);
    }
}

private function GetBaseInput() : Vector3 {

    var p_Velocity : Vector3;

    if (Input.GetKey (KeyCode.W)){
        p_Velocity += Vector3(0, 0 , 1);
    }

    if (Input.GetKey (KeyCode.S)){
        p_Velocity += Vector3(0, 0 , -1);
    }

    if (Input.GetKey (KeyCode.A)){
        p_Velocity += Vector3(-1, 0 , 0);
    }

    if (Input.GetKey (KeyCode.D)){
        p_Velocity += Vector3(1, 0 , 0);
    }

    return p_Velocity;
}