Destroy particles on collision

add a condition to the "additional expiry condition" in the particle editor

the way conditions work is that you check if a thing is true, then return true, which will make it do the thing

then put a return false block outside of the condition, but with no condition around it, so that it always defaults to not doing the thing

in this case the thing is the particle disappearing

in the "advanced" section, there's a blue thing that says "dependencyName", replace dependencyName with onGround and put that in your condition

if you see onGround pop up on the right in the required dependencies list, you are doin it right

if that doesn't work, then check if the block at its position is not leaves

@91arrows can you explain this with an image? What do you mean by return true/false blocks? I have "If Logic dependency (onGround) = True Do..." but nothing happens, presumably because the trigger doesn't know what entity/particle/whatever even has the onGround dependency to check for.

I haven't tested this yet, but it should work:

And the procedure goes in here:

(Remember to also have "Does particle collide" enabled as well)

@WolfyTheModCreator I should mention that I am not OP. I would actually like for my particles to disappear when they hit the ground and spawn a block where they land. If I put a print statement inside the if do, I never see anything output to the console. It's like onGround doesn't exist (or it is always false).

@WolfyTheModCreator Ah, you know what. I think the problem was when I did what you said to do, I had to go back into the particle window and change the "Additional particle expiry condition"  from "(no additional condition)" to the one now created. I thought that there was a bug in MCreator because I could not get any other procedure in the drop down except "(no additional condition)" UNTIL the [Return logic] blocks were added. So this works! Thank you!