making parameter optional with isNil

[voidbyte 13]

Hello, 

 

I am kinda stuck actually. I have a function.
And I want to set a default value, if the function is called without paramters.
The reason behind is: There is no need to use a parameter if you dont want to return a specific answer from the function. So I tried to make my life easier with this:
 

private ["_isBossTrue", "_setBoss"];
params ["_adminPlayer"];

if ( isNil {_this select 0}) then {_adminPlayer = 0;}
_adminPlayer = _this select 0;


if (_adminPlayer == 1) then { ...

 

so trying to call the it with:

_whatPlayerIsIt = [0] call fnc_checkPlayer;

works fine.
 

_whatPlayerIsIt = call fnc_checkPlayer;

does not.

 

This function might grow up.. and I dont wanna end up with pen and paper, writing down what params I have to use, even if they are not necessary.
Any ideas?

 

 

[Sgt. Dennenboom 98]

These two commands do exactly what you want:

param

params
 

So the "param" command would be used as such:

_adminPlayer = param [0,<DEFAULTVALUE>];

 

The reason why your second example doesn't work is because "_this" is nil there, so "_this select 0" results in nonsense.

[voidbyte 13]

gosh... you made my day!
Thank you for that!