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I want to make something spawn a circle and then the circle is erased in a second without the circle hitting anything, Is it possible?

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(e) => { scene.addcircle({collideset := 0; airfrictionmult := NaN}) }


But you need air friction for it to work

I want the circle to stay there for a second or more like 10 seconds, I don't want scene.my thing, I also want it possible to make more than one at the same time.

you can use the for(number of times you want to, (variable if you want to change something according to spawns)=>{script to be executed}) function(a looping structure) to avoid having to type everything tons of times.

for the time-limit, you might want to use a built-in variable, stored in the circle itself, and put on the density value something like that
{timetodeleteobject <= sim.time ? 0 : density of normal object}

also, i'm assuming you're using algodoo, as using density = 0 in A:PE can cause crashes.

Hmm, So if I wanted to make it be deleted in 5 sim.time units after being spawned , how would I do that?

if you want to spawn an object before the last one gets deleted it can be a problem because the script will be deleted from the first object that was spawned.

If you want it to last 5 time units and if only one circle every 5 units is spawned this works:

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(e) => { scene.addcircle({spawntime := sim.time; density := {(sim.time - spawntime) > (5.0 / sim.frequency) ? {0} : {2.0}} }) }


But are you using phun or algodoo? This is important to know.

Algodoo. Thanks for all your help.

Ok it will work then. Otherwise you'd have to use airfrictionmult = NaN instead of density = 0
try it. If it's too fast use a higher number than 5.0

And you really want to delete it after 5 time units and not 5 seconds or something like that?

Okay , but why can it only spawn one at a time?

You can spawn more at a time but then only the last spawned will be deleted. the others will stay because once a new object is spawned before the last one is deleted the script gets deleted from the old one and only works for the new spawned object. i don't know why this happens. maybe a bug.

Hmm, well my problem is solved, Thanks everybody!
EDIT : One quick question, is it possible to make an if statement that ask if the other thing is water?

Yes - e.other + "" is how you work out what it is (I am not sure if I have spelt it right) - so this is the code -

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e.other + "" == "water" ? {What happens if it IS water} : {What happens if it ISN'T water}

You can also make it so it can recognise what type of geomitery the other thing is -
if it's a plane - e.other + "" equals "plane"
if it's a box - e.other + "" equals "box"
if it's a polygon - e.other + "" equals "polygon"
and so on - you get the idea

No that doesn't work. I already tried it. I only know this kind of code for the normal geometries but not for water. I also tried "splash of water" but that doesn't work, too