Spawn particles on the point 2 object collide?

dop2000 Neat! Good catch on the issue with complete overlap - I think my example should work okay if the objects are solid though. I've also had a few thought on how to reduce the number of particles objects generated and to generate particles from both sides (using two detectors, one stepping clockwise, the other anticlockwise) - hopefully I'll get a chance to give it another go at some point this week.

Using more detectors will not be good for performance.

You can add an instance variable "isOverlapping" to the Detector sprite and use it to determine when Detector is no longer overlapping asteroid - that would be your second point to spawn particles.

Thanks so much guys. I was having some real trouble trying to do pretty much this same thing, and you've solved all my problems. Great work.

mekonbekon

Christmas

Here is a new version. It doesn't need the Detector sprite anymore, works faster and spawns particles even when the asteroid sprite is located fully inside the ship sprite.

https://www.dropbox.com/s/wko87enmiica2 ... .capx?dl=0

dop2000 great stuff! Really like the alternate frame technique and removing the detector. I swapped out the "8" for "ship.imagePointCount". I didn't get much of a chance to look at this last week; if this one is less hectic I'll have a pop at converting it to a function so it can handle multiple object types.

Thanks for all these great examples and infos.