Firing in multiple directions at once. (Unity)-CodePudding

I'm making a top down shooter game in unity using the old input system and I ran into a problem. I use the arrow keys to shoot but I'm not sure how to fire in multiple directions at the same time/frame. Code:

void Update()
    {
        currentTime  = Time.deltaTime;
        //input section
        if (Input.GetKey(KeyCode.UpArrow))
        {
            ShootUp();
        }

        if (Input.GetKey(KeyCode.DownArrow))
        {
            ShootDown();
        }

        if (Input.GetKey(KeyCode.LeftArrow))
        {
            ShootLeft();
        }

        if (Input.GetKey(KeyCode.RightArrow))
        {
            ShootRight();
        }

        if (Input.GetKey(KeyCode.UpArrow) && Input.GetKey(KeyCode.RightArrow))
        {
            ShootUp();
            ShootRight();
        }

 }

I thought that looking at both arrow keys at the same time, I would just call both functions as well. Its does not work however. I tried google but it's pretty hard to find info on the old input system having the same problem.

CodePudding user response：

The code you wrote works. Basically the code you wrote says this:

If (I pressed the up arrow)
So {
Shoot high;
}

If (I pressed the down arrow)
So {
Shoot down;
}

If (I pressed the left arrow)
So {
Shoot left;
}

If (I pressed the right arrow)
So {
Shoot right;
}

Your code would not have worked if instead of writing 4 if, you had written if only if and 3 else if.

In this case it would mean:

If (I pressed the up arrow)
So {
    shoot high;
}
If the condition was not true before and if (I pressed the down arrow)
So {
    Shoot down;
}
If all the above conditions are not true and If (I pressed the left arrow) ...

So, the only thing you need to change in your code is: delete the last if (it's useless).

Hope I was helpful :)

CodePudding user response：

Okay, so first of all. All of these should go into a seperate method and then called in Update. Secondly, Input.GetAxis use that, and write a method which would take a Vector2 direction and instantiate a bullet towards that direction.


private void Update()
{
   currentTime  = Time.deltaTime;
   Shooting();
}

private void Shooting()
{
   var x = Input.GetAxis("Horizontal");
   var y = Input.GetAxis("Vertical");
   Vector2 direction = new Vector2(x, y);
   
}

private void Shoot(Vector2 direction)
{
   // Instantiate bullets and fire them towards direction.
}

Google Input.GetAxis method, and Vector2 in case you do not know that.