from preamble:
"Change Set: overlappingPlayer Date: 6 January 2004 Author: Markus Gaelli
I showed a good friend of mine (a teacher) how to program space invaders completely with Etoys. You can try out the result here:
http://www.squeakland.org/project.jsp?http://www.emergent.de/pub/smallta lk/squeak/projects/petersInvaders.003.pr
We used the common seesColor trick for the collision-detection, but we found it difficult to determine which UFO was hit by our laser, so I leveraged the existing Smalltalk Method called Morph >> morphsInFrontOverlapping:
to a tile in miscellaneous called: overlappingPlayer in Etoys. Did we overlook some other way to find out with Etoys which of the UFOS have been hit by our shot?
If not, should be put it to miscellaneous? Is it a problem that we only return one of possible many overlapped players? Is there a better name than overlappingPlayer? Should I send the changeset? Done... :-) "!