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To: "MicroWorlds Forum" <mwforum@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: MIA, Ask an Expert: OnTouching
From: "Daniel Ajoy" <da.ajoy@xxxxxxxxx>
Date: Fri, 29 Oct 2010 10:38:01 -0500

from: Anonymous <swanson6748g@xxxxxxxxxxxxxx>
date: Fri Oct 29 09:20:07 2010
platform: PC
version: MicroWorlds Ex
sety 0 - ( random 176 ) is in the onTouching area of a turtle, but it does nothing when touching.

When touching... what?

It has to touch another turtle, not a color. These are the rules from the Help:

Turtles can be programmed to react when they touch any other turtle. In the OnTouching field, type the instruction to run when the turtle touches (or is touched by) another turtle. Any change in the state of a turtle that results in a "collision" that you can observe visually will trigger a collision detection: fd, bk, home, setpos, drag and drop, setsize, etc. Both the "active" turtle (the one that is touching, due to a change in its state) and the "passive" turtle (the one that is touched) will react to the collision and do whatever they are instructed to do.

OpenWorld Learning

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