spawn not being executed

[a666 10]

I am trying to expand the camera.sqf which comes with ARMA2 in order to be able to create a bullet/shell/whatever and send it to a target location (center of the screen).

Unfortunately I haven't been able to do so. For some reason

displayaddeventhandler ["keydown","
...
[_pos, _dirh, _dirv] spawn DEATHCAM_gun; <- this goddamn line103 in deathcam.sqf
...
"];

does nothing.

So I am wondering why this is happening.

You can check the whole code here.

Or the demo mission I am using.

And, if someone a a better idea about how to do what I am trying to do, any contribution is welcome.

[kylania 568]

No need to reinvent the wheel. :)

http://forums.bistudio.com/showthread.php?t=79791&highlight=bulletcam

[a666 10]

I am not trying to make a camera which will follow a bullet (a bulletcam).

What I am trying to do is to make a camera which you can move manualy, and on keydown of, let's say, spacebar will create a bullet (createVehicle) at the position of the camera and send it downrange to a position defined by screenToWorld.

Essentially a camera that shoots bullets...

[kylania 568]

That is a bizarre idea and will involve math which makes me cry. Hopefully one of the setVelocity experts will chime in with an idea. :)

Why would you need such a thing anyway?

[a666 10]

I am basing the code on the massively awesome work of LurchiDerLurch ac130 script (as said in the init function), so the math is mostly resolved, the setVelocity works (even through it is kinda slow). The functions I got work.

The problem is that once the camera.sqf (in my case called deathcam.sqf) is running, this code:

[] spawn somefunctionname;

never executes, even when I called deathcam.sqf with an execVM.

The problem is that inside the code which gets the keyboard events via

displayAddEventHandler ["keydown"], "code or call functionname"];

seems to take the syntax of a sqs script (example, sleep 1; returns error).

Essentialy some guy I play multiplayer with asked me if it was possible to make such a thing (he likes to see things blow up, probably :)), and has I was learning scripting I told him that I would try doing it...

And almost everything is resolved, except this.

[twirly 11]

You can get the math from the code in this post with a little fiddling.....

http://forums.bistudio.com/showpost.php?p=1881211&postcount=5

[.kju 3245]

deathcam_gun.sqf

waitUntil {sleep 0.1};

[a666 10]

Alright, it's done. And I simplified a lot the whole enchilada.

Twirly, your code gave me plenty of ideas, thank you.

Had to create a sidelogic at the screenToWorld location. Obtain its posASL.

Get the posASL for the cam, a little math, and voila, a death bringin' f'ing cam.

	screenpos = screenToWorld[0.5,0.5];
if (isNil("target")) then {
	target = (createGroup (createCenter sideLogic)) createUnit ["LOGIC", screenpos, [], 0, ""];
}else{
	target setPos screenpos;
};
tpos = getPosASL target;
_pos = getPosASL DEATHCAM;
_muzvel = 20;


//uses some functions from LurchiderLurch AC130
_angles = [_pos,tpos]call LDL_getObjectAngles;
_dirh = [_angles select 0]call LDL_normalizeAngle;
_dirv = [_angles select 1]call LDL_normalizeAngle;

_spread = (random (DEATHCAM_spread select DEATHCAM_currentspread))/10;

_dirh = _dirh + sin(random 360)*_spread;
_dirv = _dirv + cos(random 360)*_spread;

_r_sphere = 100;
_z = _r_sphere* cos(_dirv - 90);
_r = sqrt(_r_sphere^2 - _z^2);
_x = sin(_dirh)*_r;
_y = cos(_dirh)*_r;

_vel = [_x * _muzvel,_y * _muzvel,_z * _muzvel];

_bullet = (DEATHCAM_ammo select DEATHCAM_currentammo) createVehicle _pos;
_bullet setPosASL _pos;

_bullet setVelocity _vel;

Edited July 23, 2011 by a666

[twirly 11]

Cool mate.... I'll give your routine a little spin later with some cattle for ammo. Always fun!!!