How do i make a function that returns a variable?

Archived Forums Questions & Answers
1

I would find this helpful with a lot of things but do not know how to make one.

could you give more detail? what are you traying to acomplish?

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2 Answers

2
3

UnityScript/JavaScript

function MultiplyByTwo(x : int) : int {
    return x * 2;
}

C#

public int MultiplyByTwo(int x) {
    return x * 2;
}

Example usage:

var y = MultiplyByTwo(5);
print(y); // Prints 10

Then there are more advanced ways of going about with ref and out which modify reference parameters or return multiple out parameters.

// This will reassign x to its double
public void MultiplyXByTwo(ref int x) {
    x = x * 2;
}

// This will assign y and z
public void StrangeFunction(int x, out y, out z) {
    y = x * 2;
    z = x / 2;
}

Example usage in C#:

void Start() {
    int x = 5;
    MultiplyXByTwo(ref x);
    print(x); // Prints 10

    int y; 
    int z;
    StrangeFunction(x, out y, out z);
    print(x); // Prints 10 (from previous function call)
    print(y); // Prints 20
    print(z); // Prints 5
}

Excellent answer. Glad to know this is also possible in JS. Probably worth mentioning as well that the return functions can be accessed via other scripts as well, so as to keep all the lengthy methods tucked away in a single script and reference them via GetComponent, or something similar.

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2

Hey lenyeto,

I am not quite sure what your asking, but if its how to make a define a variable through code, it would be similar to the following…

In C#

GameObject player;

void Start () {
player = GameObject.FindWithTag("Player");
}

In UnityScript/JavaScript

var player : GameObject;

function Start () {
player = GameObject.FindWithTag("Player");
}

Hope I helped ∆ Gibson