Problems with undefined variables when getting variable from array

[shifty_ginosaji 10]

I am working on a jamming script and there is an "error: undefined variable" on line 23 {_missile setDir _missileVector} even though it was defined on line 21 {_missileArray (getpos_jammer) nearEntities["M_Titan_AA_long",_jamRange];}?

I have no idea whats going on, please help?

//
//Syntax:
//
// _null = [Jammer,Jammer Range] execVM "jammer-missiledetection.sqf";
//
//

waituntil {!isnil "bis_fnc_init"};

_jammer = _this select 0;
_jamRange = _this select 1;
_jammerOn = "true";

private ["_jammer","_jamRange","_missileVector","_missileArray","_missile"];

while {_jammerOn == "true"} do {

	player sideChat "This debug proves the while-do construct is working";
       _missileVector = round(random 360);	
       _missileArray = (getpos _jammer) nearEntities ["M_Titan_AA_long",_jamRange];
	sleep 0.01;
       _missile = _missileArray select 0;	
       _missile setDir _missileVector;
	sleep 0.2;

};

Edited October 9, 2014 by Madopow2110

[dreadedentity 278]

Where is the hash symbol ( # ) in your error message?

---------- Post added at 03:04 ---------- Previous post was at 02:57 ----------

Well I went through it and made a couple of changes, using variables before you "private" them has an unknown effect (to me, never tried that before), so try it this way (you can remove my comments)

waituntil {!isnil "bis_fnc_init"};

private ["_jammer","_jamRange","_missileVector","_missileArray","_missile"]; //define variables before using them

_jammer = _this select 0;
_jamRange = _this select 1;
_jammerOn = true; //no need for string

while {_jammerOn} do {

	hintSilent "This debug proves the while-do construct is working"; //no more side chat spam!
	_missileVector = round(random 360);	
	_missileArray = (getpos _jammer) nearEntities ["M_Titan_AA_long",_jamRange];
	sleep 0.01;
	_missile = _missileArray select 0;	
	_missile setDir _missileVector; //setDir kills velocity so you should save velocity, then reapply it in the correct vector
	sleep 0.2;

};

hintSilent ""; //close the "hint" display as soon as the loop ends

[shifty_ginosaji 10]

thanks for the work, as for you comments the hash was in front of the _missile in the setdir line. setdir in previous tests is fine for these purposes so no velocity vector is needed

EDIT: (#) _missile setDir _missileVector;

is still broken in the undefined variable error

[killzone_kid 1332]

Your missileArray is empty and you are returning element 0 which doesnt exist. Either add check if array is empty or use foreach loop

[shifty_ginosaji 10]

awesome, thanks for the help.

also, if anybody knows how to detect chat msgs being sent please tell