Weapon swapping in-game

Questions & Answers
1

Hi there I am planning on having around 15 different guns within my game and am wondering how to change weapons from the one in my hand to a weapon on the ground. I have a firing/ammo script for my guns and I have a gun swapping script that I made:

var MyHand : Transform; //your hand
var MyGun : Transform; //what your picking up
var ThatGun : Transform;
var dist = 5; //distance at which you can pick things up
private var isHolding = false;

    function Update () {
        if(Input.GetKeyDown(KeyCode.Q)){
            if(Vector3.Distance(transform.position, MyGun.position) < dist)
            {
                isHolding = !isHolding;
                }
                }

        if(isHolding == true){
            MyHand.transform.DetachChildren();
            MyGun.rigidbody.useGravity = false;
            MyGun.parent = MyHand;
            MyGun.transform.position = MyHand.transform.position;
            MyGun.transform.rotation = MyHand.transform.rotation;
            }
            else{
                MyHand.transform.DetachChildren();
                MyGun.rigidbody.useGravity = true;
                ThatGun.parent = MyHand;
                ThatGun.transform.position = MyHand.transform.position;
                ThatGun.transform.rotation = MyHand.transform.rotation;
            }
    }

the problem is that this script that I made-up only works for two guns and I need to swap between around 15 eventually. I know I could extend this script to work for more guns but I'm worried it would get very complicated and slow functioning.

Any help would be much appreciated

Thanks, Scribe (javascript please)

2

Make an array of guns, and just have it change due to amount, and have a switch statement for certain values...

A = 0, B=1, C=2, D=3.

Switch so that if A, gun value = 0, and so you change var gun to that gun, and all the properties... B has value = 1 etc.

Kind of easy.

3

You are testing against a particular gun that you have to assign to your player. Just tag your guns as "Gun" and do something like that:

var MyHand : Transform;
var CurrentGun : Transform;
var dist : float = 5;

function Update() {
    if (Input.GetKeyDown(KeyCode.Q)){
        var allNearObjects : Collider[] = Physics.OverlapSphere(transform.position,dist);
        for (var current : Collider in allNearObjects) {
            if (current.transform != CurrentGun && current.tag == "Gun") {
                // Detach old gun
                CurrentGun.parent = null; 
                CurrentGun.rigidbody.isKinematic = false;
                //Attach new gun
                CurrentGun = current.transform;
                CurrentGun.rigidbody.isKinematic = true;
                CurrentGun.parent = MyHand;
                CurrentGun.localPosition = Vector3.zero;
                CurrentGun.localRotation = Quaternion.identity;
                break;
            }
        }
    }
}

When hitting the "Q" button it iterated through all colliders that are in range (dist). If it found a gameObject that is tagged as "Gun" and it's not the one you're using at the moment. switch them.