Design: Enemies should never turn arbitrarily.

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Enemies should never turn arbitrarily

So in Mario, no enemy just turns in the middle of a platform. They always go to 
the end of a 
platform or to a wall.  In contrast, RI enemies, particularly the snail, turn 
in arbitrary (to the player) 
places which is really frustrating because you have no way of knowing when that 
is.  One of the 
birds does this as well. 

There is like 1 exception in Mario. The cactus guys. But they turn so often 
(like every 1/4 second) 
that it's clear what to do with them

Suggestion: Make all enemies only turn at a visible barrier. This will remove 
the frustration with an 
enemy arbitrarily turning on you.

Original issue reported on code.google.com by sm0a...@gmail.com on 14 Apr 2010 at 8:31