koobas.hobune.stream
no "pointers" to get directly to a variable passed to a function?
it's hard for me to think of a proper name for this problem. if I get it, then I'll change the title,
the thing is that if I use this function
var delay = 0.3;
function Delay(bool:boolean){
yield WaitForSeconds(delay);
bool = !bool;
}
on some boolean, to turn it off over time of "delay" seconds, I am not really changing the boolean that I passed. I'm just changing the temporal "bool" variable declared in here.
How to change the value that was passed to that function?
You actually couldn't do it the normal way of using a ref parameter due to how coroutines work
On the other hand, what you could do is pass in an instance of a custom class, which has a bool inside of it:
class BoolWrapper
{
var bool : boolean;
}
Using it:
var wrapper = BoolWrapper();
function Start() { wrapper.bool = false; Delay(wrapper); }
function Update() { Debug.Log(wrapper.bool); //this'll change after 0.3s }
And the modified original coroutine:
var delay = 0.3;
function Delay(boolWrapper:BoolWrapper){
yield WaitForSeconds(delay);
boolWrapper.bool = !boolWrapper.bool;
}
The class will be passed by reference instead of by value, so when you change the bool inside of it, it's changing the original value
@Petroz: because you get an error if you try. Also, JS can't declare reference variables in functions anyway, though it can use them in C# functions.
