Spawn/Despawn on EXITING triggerzones

[DemonFire]

In a mission I'm making, units spawn when you enter a triggerzone and despawn when you leave that same triggerzone.

I give you the following code:

function onEnter_ts1(zoneName, unitName)
    OFP:activateEntitySet("s1");
end

function onLeave_ts1(zoneName, unitName)
    OFP:destroyEntitySet("s1");
end

Entity set is called "s1" and the triggerzone is called "ts1". This code doesn't work as of now and I don't know why....

Does anyone see any problems?

[Fiddlestx]

you don't need the " ; " after your commands. I'm not sure if that will make a difference though it may be worth a try.

[ZipD]

The semicolon is optional in LUA. Assign your entity to a setID first, then use that setID to despawn them.

function onEnter_ts1(zoneName, unitName)
setID1 = OFP:activateEntitySet("s1");
end

function onLeave_ts1(zoneName, unitName)
OFP:destroyEntitySet(setID1);
end

The number 1 in setID can be any number you wish. Just remember to give a unique number for each different entity set.

[private pile]

I've found that destroyEntitySet can be unreliable, to the point that at times it just doesn't work at all. Using despawnEntity, on the other hand, seems to get 'em every time - but it does involve a lot of tedious coding.

[DemonFire]

Thanks for speedy replies everyone

Its true, the destroy entity set is really annoying. But its not working even after I've assigned IDs to everything.

Here is the revised code:

function onMissionStart()
ts2spawn = 0;
ts1spawn = OFP:activateEntitySet("s1");
end

function onEnter_ts1(zoneName, unitName)
	ts1spawn = OFP:activateEntitySet("s1");
end
function onLeave_ts1(zoneName, unitName)
	ts1spawn = OFP:destroyEntitySet("s1");
end

function onEnter_ts2(zoneName, unitName)
	ts2spawn = OFP:activateEntitySet("s2");
end
function onLeave_ts2(zoneName, unitName)
	ts2spawn = OFP:destroyEntitySet("s2");
end

[ZipD]

@Demonfire, did you use 'despawn' or 'destroy'? You said destroy was annoying and not working but your code uses destroy.

@Pile, I have the exact opposite results. Destroy works for me and despawn doesn't. Here's my mssn sample: http://www.filefront.com/14812401/test_despawn.rar

Move to the left to destroy 'EntityLeft' and move to the right to despawn 'EntityRight'. Leaving the triggerzones respawns the respective entity.

The code:

SetID1 = 0;
SetID2 = 0;

function onMissionStart()
	-- Spawn both entity sets when the mission starts
	setID1 = OFP:activateEntitySet("EntityLeft");
	setID2 = OFP:activateEntitySet("EntityRight");
end 

-- this function displays messages in the log
function showMsg(strMessage)
	OFP:displaySystemMessage(strMessage);
end

-- uses destroyentityset to remove entities
function onEnter_tzDestroy(zoneName, unitName)
		showMsg("Destroying left entity..");
	OFP:destroyEntitySet(setID1);
end

-- uses despawnentity to remove entities
function onEnter_tzDespawn(zoneName, unitName)
	showMsg("Despawning right entity..");
	OFP:despawnEntity(setID1);
end

-- respawns entities on the left when player leaves the zone
function onLeave_tzdestroy(zoneName, unitName)
	showMsg("Re-activating left entity..");
	setID1 = OFP:activateEntitySet("EntityLeft");
end

-- respawns entities on the right when player leaves the zone
function onLeave_tzdespawn(zoneName, unitName)
	showMsg("Re-activating right entity..");
	setID2 = OFP:activateEntitySet("EntityRight");
end

NOTE: I find that OnLeave_zoneName requires the zonename to be in lower caps. In fact, that holds true for alot of things that don't work as they should. If anyone should find themselves wondering why something simple don't work, just change the names to lower caps.

[DemonFire]

Thanks ZipD, this works!!

I'll upload my mission when its done (conversations might take a while though)

Thanks everyone XD

[Leone]

I find I still can't get this to work, no matter what I try. I get the "Entered South Middle Zone" msg, but never the "Despawned Radio Tower Set" msg (or the tank "test2").

Any ideas? I can get one group to spawn, but can't then switch them off so I can spawn others

function onEnter_sthmiddlezone_usmc(zoneName, unitName)  --When entering the South Middle Zone
	OFP:activateEntitySet("sthmiddleset")  --Turn on South Middle Zone entity set
	OFP:destroyEntitySet("radiotowerset")  --Destroy RadioTower set
	OFP:destroyEntitySet("villageset")  --Destroy Village set
	OFP:destroyEntitySet("nthmiddleset")  --Destroy North Middle set
	OFP:displaySystemMessage("Entered South Middle Zone")
end

function onDespawnEntitySet_radiotowerset( setID )
	OFP:destroyVehicle("test2")
	OFP:displaySystemMessage("Despawned Radio Tower Set")
end

[DemonFire]

function onEnter_sthmiddlezone_usmc(zoneName, unitName)  --When entering the South Middle Zone
    OFP:activateEntitySet("sthmiddleset")  --Turn on South Middle Zone entity set
    OFP:destroyEntitySet("radiotowerset")  --Destroy RadioTower set
    OFP:destroyEntitySet("villageset")  --Destroy Village set
    OFP:destroyEntitySet("nthmiddleset")  --Destroy North Middle set
    OFP:displaySystemMessage("Entered South Middle Zone")
end

Take out all the stuff in red. Make sure all your unit names and entity set names match the ones in the code and it should work.

[Leone]

Ahh, thanks! Yes, totally forgot about that.