SmallMap issue(s)

[Gervase Lam]

I'm looking at SmallMap doesn't show exit (Bug 1213).  The solution says 
"to add a generic WorldObj::draw_smallmap() and let Entrance and Exit 
classes do the rest.  ExitTrap classes could also draw themself on the 
map."  Does this mean something a bit like Entrance::put_onto_smallmap() 
and Exit::put_onto_smallmap()?

If so, this is going to be some undertaking as that means every Pingu and 
object should have the possibility of drawing themselves on to the 
smallmap.  Does this mean that the ColMap class should also alter the 
smallmap?

In a way this is a good thing is it enables the 'terrain' on the smallmap 
to be constantly updated, unlike what happens now.  If the SmallMap class 
were to be given the resposibility of updating the 'terrain', it would 
have to go through the whole colmap array after every game "update".  This 
could slow things down.

Also, how would each object access the small map so that it can be 
altered?  Should a pointer or reference to the small map be passed to each 
object?  How and where in the code should the small map object or data 
type be instantiated?

Thanks,
Gervase.