Erase Water Drops onCollide

[osiris]

Hi guys, need help with water drops:
The goal is to delete every water drop when it collides with object, but killer-object's script

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e.other.density := 0;

seems doesn't affect water and

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scene.erasewater

just deletes water from all scene..
any ideas?

[Kilinich]

"killer" object, collided only with water

[osiris]

i've tried that, in that case other scripts, from the 'killer' object won't fire..
i'm making an engine model, and everything was going not bad, except i can't make it consume fuel so one drop of fuel makes to much explosions and ruins all cylinder cycle..

[Kilinich]

the only workaround I see is to use circles instead of water

[bozbez]

Alternatively, you could check the 'killer' box in the materiel menu, or i have missed a vital point because i read the topic too quickly.

[Gear97]

Sorry if missed something, but what about using a killer object to delete the water drops and make the rest of the things "imortal" ?

[osiris]

Alternatively, you could check the 'killer' box in the materiel menu, or i have missed a vital point because i read the topic too quickly.

yep, i wrote about it in 3d post..

the only workaround I see is to use circles instead of water

yeah... but that just sucks.. kills all beauty of realism, and especeally my gas pump that'll be my backup variant, but i think there is got to be a solution for erasing water with script, its seems to be so basic operation, that i just can't believe it's impossible

[osiris]

Sorry if missed something, but what about using a killer object to delete the water drops and make the rest of the things "imortal" ?

Guys, i just wrote about it:

i've tried that, in that case other scripts, from the 'killer' object won't fire..

and it's vital..

[Gear97]

Hey osiris what do you mean by won´t fire I am not getting it ? Do you mean that because the killer kills anything it touches you can't use oncollide ?
Because if it is about this, I said in my last post that you can make things "imortal".
Sorry again if I missed some other thing.

[osiris]

Gear97

Do you mean that because the killer kills anything it touches you can't use oncollide ?

Yep, you got it right! but making things immortal won't help.. because oncollide must work with the object, wich must disapear it's easy when i can use density := 0 , but i need to do this with water, wich seems to be immune to density=0 trick.. let me explain..
the trouble is: i'm making an engine, so the on ignition a drop of fuel must disappear (erasing water) and a flame must appear... i'm doing it like this: when water touches spark-plug onCollide script must create a flame and erase water.. making a spark-plug a "killer" object prevents script from creating a flame, and not deleting water (witch i pretend to be a fuel ) just ruins the whole idea..

[Gear97]

I see ... Thank you for the extra information, right I have no idea but I will see if I think of something.
EDIT: Oh nice ! More information!!!

[osiris]

Gear97
anyway, thanks for trying to help
also, i was editing my previous post just when you answered it.. so there is some more info about my scene..

[Someone Else]

You could place two identical spark plugs exactly on top of each other, one killer that collides only with water, the other non-killer with the script that spawns the flame. (credit Kilinich, I think)

Alternatively, you could spawn a killer circle that collides only with water, and deletes itself onCollide.
(credit skateboardinben)

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scene.addCircle({
    collideSet := 0;
    killer := true;
    onCollide := (e)=>{
        collideWater = false;
        airFrictionMult = -inf}
})

[osiris]

Someone Else,
Man, thanks! That's perfect: i'll just add second smoke-circle (i'm already making one for exhaust system), wich will kill water and disappear!
but i still can't believe that there is no script way for killing water..
anyway, more smoke makes engine look more powerfull

[osiris]

DAMN!
same thing: a killer-circle doesn't destruct itself: self-erasing script won't fire with killer-object - a water drop erased on touch and oncollide-script won't start..

Placing a killer object under the same non-killer object with script also won't help: they won't work both, or drop is erased by killer, or script work, but water wont get to the killer because it contacts with a script-containing object...
so, here i am, just where i started...

[TC42]

Can you use immortal geoms? I think, otherwise, that Kilinich is right, you will have to use circles, as there is no script menu for water, nor any known way to delete individual water particles. And oncollide functions aren't called with killer objects (bug?). Maybe if you posted the engine you're working on, it would help...

[Someone Else]

You could make the spawned killer circle collide on, say, E and spawn two of them.

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for(2, (i)=>{
    scene.addCircle({
        collideSet := 32;
        killer := true;
        pos := e.pos
    })
})

I have used this technique, too. Credit on this goes to davidz40.

Man, how in the world did I think that self-deleting a killer would work...