Spawning enemy by distance

[clydefrog 3]

What's the best way to go about having enemy only spawn at a certain area when you get close to them? Which are the best scripts for doing something like this?

example: a group of 10 enemy infantry spawn in a village when you get within 500 metres of them

Thanks.

[cuel 25]

A trigger that runs a script that spawns units.

Trigger act: blufor present

on activation

0 = ["spawnmarker"] execVM "spawnUnits.sqf";

spawnUnits.sqf:

if (!isServer) exitWith {};
_spawnPos = markerPos (_this select 0);

_group1 = createGroup EAST;
_unit1 = _group1 createUnit ["RU_Soldier_SL", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit2 = _group1 createUnit ["RU_Soldier", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit3 = _group1 createUnit ["RU_Soldier_Medic", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit4 = _group1 createUnit ["RU_Soldier_AR", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
[_group1,_spawnPos,200] call bis_fnc_taskPatrol;

Edited August 5, 2012 by cuel

[clydefrog 3]

A trigger that runs a script that spawns units.

Trigger act: blufor present

on activation

0 = ["spawnmarker"] execVM "spawnUnits.sqf";

spawnUnits.sqf:

if (!isServer) exitWith {};
_spawnPos = markerPos (_this select 0);

_group1 = createGroup EAST;
_unit1 = _group1 createUnit ["RU_Soldier_SL", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit2 = _group1 createUnit ["RU_Soldier", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit3 = _group1 createUnit ["RU_Soldier_Medic", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit4 = _group1 createUnit ["RU_Soldier_AR", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
[_group1,_spawnPos,200] call bis_fnc_taskPatrol;

Great thanks, what does the "NONE" and the [], 1, before it refer to?

[cuel 25]

http://community.bistudio.com/wiki/createUnit_array

[clydefrog 3]

http://community.bistudio.com/wiki/createUnit_array

It says "Special properties can be: "NONE" and "FORM". ", it doesn't say what "NONE" and "FORM" mean or do though.

[cuel 25]

It's the attribute that you can enter in the editor IIRC. Like none, formation, flying.

Should be "NONE", "FORM", "FLY".

[clydefrog 3]

Ahh, thank you. I guess those are useless in this case as they are not set to move in a formation anyways, just stand there.

[clydefrog 3]

cuel, how could this script be modified so that the units spawned don't wonder off and instead stay in a given radius or something, it works but the problem is they just walk off wherever so you can't really use it to have units defend an area.

[cuel 25]

I made them patrol, remove the line at the bottom :)

[_group1,_spawnPos,200] call bis_fnc_taskPatrol;

Alternatively lower the 200, that's the maximum distance between waypoints.

[clydefrog 3]

I made them patrol, remove the line at the bottom :)

[_group1,_spawnPos,200] call bis_fnc_taskPatrol;

Alternatively lower the 200, that's the maximum distance between waypoints.

Ok, so then they'll just stand still? What I meant was patrol but only in a fixed area, as it is they seem to patrol anywhere and travel a long way from where they spawn.

[cuel 25]

Yes if you remove it they'll stand still.

If you want more control over their patrols I'd recommend using UPSMON or a similar script. If you're using CBA there's this function.

[clydefrog 3]

Yes if you remove it they'll stand still.

If you want more control over their patrols I'd recommend using UPSMON or a similar script. If you're using CBA there's this function.

Ok thanks, I looked at UPSMON but I'm using the Zeus AI mod and it sounded like it could clash with it. I'm using CBA so I'll check that out, thanks. But I guess with this CBA one you have to run it from a group leader or something and not from a trigger than spawns them like the one you gave me.

Edited August 13, 2012 by clydefrog

[cuel 25]

Should be no problem, try this:

if (!isServer) exitWith {};
_spawnPos = markerPos (_this select 0);

_group1 = createGroup EAST;
_unit1 = _group1 createUnit ["RU_Soldier_SL", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit2 = _group1 createUnit ["RU_Soldier", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit3 = _group1 createUnit ["RU_Soldier_Medic", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit4 = _group1 createUnit ["RU_Soldier_AR", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
[_group1, _spawnPos, 150, 7, “MOVEâ€, “AWAREâ€, “YELLOWâ€, “FULLâ€, “STAG COLUMNâ€, “â€, [3,6,9]] call CBA_fnc_taskPatrol;

[clydefrog 3]

Should be no problem, try this:

if (!isServer) exitWith {};
_spawnPos = markerPos (_this select 0);

_group1 = createGroup EAST;
_unit1 = _group1 createUnit ["RU_Soldier_SL", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit2 = _group1 createUnit ["RU_Soldier", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit3 = _group1 createUnit ["RU_Soldier_Medic", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
_unit4 = _group1 createUnit ["RU_Soldier_AR", [_spawnPos select 0,_spawnPos select 1,1], [], 1, "NONE"]; sleep 0.2;
[_group1, _spawnPos, 150, 7, “MOVEâ€, “AWAREâ€, “YELLOWâ€, “FULLâ€, “STAG COLUMNâ€, “â€, [3,6,9]] call CBA_fnc_taskPatrol;

Thanks but it doesn't work, they don't spawn but when I enter the trigger my fps drops.

Actually it doesn't seem like the original one works either, nothing is spawning.

---------- Post added at 22:01 ---------- Previous post was at 21:32 ----------

Hmm ok I think it's working now, only after I put an opfor unit down on the map to test some other spawning script I got shown, weird.

Edit: Ok they spawn, but they just stand there and don't patrol.

Edited August 13, 2012 by clydefrog

[cuel 25]

Yes you need something called centers if you want to spawn units this way. Those are created if there's a unit from that side in the mission from start. You can create a unit from each side and set their "probability of presence" down to 0% to circumvent this, or use this in your init.sqf.

Also seems like there was a problem copying the quotes directly from the CBA homepage so change the bottom-line to this :)

[_group1, _spawnPos, 150, 7, "MOVE", "AWARE", "YELLOW", "FULL", "STAG COLUMN", "", [3,6,9]] call CBA_fnc_taskPatrol;

[clydefrog 3]

Yeah I read about that center stuff earlier today on the BIS fnc spawnGroup page, that's why I put it down as I was testing a script using BIS fnc spawnGroup.

Now it works :)

What was the problem with the code? It looked exactly the same as the original line when I looked at them both. Thanks a lot for this, just what I was looking for and this CBA one seems to have a good level of control.

[cuel 25]

The quotes were not functional, I copied that directly from the CBA page.

“MOVEâ€

vs

"MOVE"

:)

[clydefrog 3]

The quotes were not functional, I copied that directly from the CBA page.

“MOVEâ€

vs

"MOVE"

:)

Haha, I didn't notice that at all. Now if I want to call this script multiple times for different groups, do I need to make copies of it with different group names e.g. _group2, or can I always call the same script but just to different markers?

[cuel 25]

You can use the same script with different markers.

_variable

are private to the script and gets destroyed when the script has finished running.

If they weren't private you would still just overwrite them and it would still work :)