Moving diagonally in 2D

Scripting C# & .NET
1

I’m making a space invaders style game and I would like to move my ship in a diagonal direction. Currently, I have a series of if statements in the Update function Code

if (Input.GetKey (KeyCode.LeftArrow)) {
            print ("left");
            MoveLeft ();
        } else if (Input.GetKey (KeyCode.RightArrow)) {
            print ("right");
            MoveRight ();
        } else if (Input.GetKey (KeyCode.UpArrow)) {
            print ("up");
            MoveForward ();
        } else if (Input.GetKey (KeyCode.DownArrow)) {
            print ("down");
            MoveBack ();

that allow me to move left, right, up and down using Vector3.left/right/up/down.More Code

void MoveLeft(){
        shipPos += Vector3.left * speed * Time.deltaTime;
    }

    void MoveRight(){
        shipPos += Vector3.right * speed * Time.deltaTime;
    }

    void MoveForward(){
        shipPos += Vector3.up * speed * Time.deltaTime;
    }

    void MoveBack(){
        shipPos += Vector3.down * speed * Time.deltaTime;
    }

How would I go about making diagonal movement?
I already tried adding These lines of code to Update()

else if (Input.GetKey (KeyCode.RightArrow) && Input.GetKey (KeyCode.UpArrow)) {
            MoveUR();
        } else if (Input.GetKey (KeyCode.LeftArrow) && Input.GetKey (KeyCode.UpArrow)) {
            MoveUL();
        } else if (Input.GetKey (KeyCode.RightArrow) && Input.GetKey (KeyCode.DownArrow)) {
            MoveDR();
        } else if (Input.GetKey (KeyCode.LeftArrow) && Input.GetKey (KeyCode.DownArrow)) {
            MoveDL();
        }

void MoveUR(){
        shipPos += (Vector3.up + Vector3.right) * speed * Time.deltaTime;
    }

    void MoveUL(){
        shipPos += (Vector3.up + Vector3.left) * speed * Time.deltaTime;
    }

    void MoveDR(){
        shipPos += (Vector3.down + Vector3.right) * speed * Time.deltaTime;
    }

    void MoveDL(){
        shipPos += (Vector3.down + Vector3.left) * speed * Time.deltaTime;
    }

but my tests so far seem to indicate that Input.GetKey(KeyCode.key) can’t handle more than one thing being input at the same time and my searches haven’t brought anything useful up.

2 
if (Input.GetKey (KeyCode.LeftArrow))
{
    print("left");
    MoveLeft();
}
else if (Input.GetKey (KeyCode.RightArrow))
{
    print("right");
    MoveRight();
}

if (Input.GetKey (KeyCode.UpArrow))
{
    print("up");
    MoveForward();
}
else if (Input.GetKey (KeyCode.DownArrow))
{
        print("down");
        MoveBack();
}
3

Thanks for the help!

4

No problem , if you need anything else just shoot me a message

5

You may want to investigate normalising so that the diagonal movement isn’t faster than the up/down/left/right

6

That’s a good point. I’ll look into that, but it looks like I might have to restructure the way I coded the movement so I’m only adding one vector to the transform.position