How do I get a count of mines in a given area?

[Luft08 27]

On my next mission I wish to have the players lay down a mine field as a task. Specifically, I have loaded 30 APERSBoundingMine_Range_Mag into a vehicle and I want the players to place at least 20 mines within a 50 meter area that I marked on the map.

 

How do I get a count of the mines that have been deployed within that area. obviously I don't want to count the mines that have not been deployed.

 

Thanks.

[engima 327]

What about performing a count using the ”fired” event handler?

 

https://community.bistudio.com/wiki/Arma_3:_Event_Handlers#Fired

[Schatten 262]

@Luft08, use this code:

#define MARKER "markerName"

private _markerSize = getMarkerSize MARKER;

private _radius = if ((markerShape MARKER) == "RECTANGLE") then {
    sqrt ((_markerSize select 0) ^ 2 + (_markerSize select 1) ^ 2);
} else { selectMax _markerSize; };

private _minesCount = { _x inArea MARKER } count ((getMarkerPos MARKER) nearObjects ["APERSBoundingMine_Range_Ammo", _radius]);

 

[beno_83au 1362]

Or even:

waitUntil {count (allMines select {(_x distance (getMarkerPos _marker)) < 50}) >= 20};

With _marker being the name of the marker you used.

[pierremgi 4737]

or in marker area (you can place a marker area and set it invisible (editor or _marker setMarkerAlpha 0) si you don't want to see it on map:
waitUntil {sleep 1; {_x inArea _marker} count allMines >= 20};

[engima 327]

I’ve had some trouble with the allMines command, since it seems to not find all kinds of mines. It may work for this mine class, but something to bear in mind if you change the mine class...

[pierremgi 4737]

2 hours ago, engima said:

I’ve had some trouble with the allMines command, since it seems to not find all kinds of mines. It may work for this mine class, but something to bear in mind if you change the mine class...

allMines are an array of all activated mines, not deactivated.

[Soapbox0331 17]

I would really like to use this to complete a task to mine a trail (UNSUNG, MP, dedicated), but I am unfamiliar with waitUntil. This would go into initServer.sqf?

 

When I try:

waitUntil {sleep 1; {_x inArea trailmarker} count allMines >= 4};

using an ellipse named trailmarker, I get "Error Undefined variable in expression: trailmarker"

 

What am I missing here?

[beno_83au 1362]

Marker names are strings. It needs to be "trailmarker".

 

And if you're unfamiliar with a command - https://community.bistudio.com/wiki/Category:Arma_3:_Scripting_Commands

 

But waitUntil can go anywhere so long as it's inside a spawned/execVM'ed script, basically. This goes into far more detail if you wanted to read into it - https://community.bistudio.com/wiki/Scheduler