Wall or surface movement

If you make it transition smoothly from tile to tile it will still look nice ;)

That's how they did it back in the day...

That is a really amazing collection of examples, nivram! I'm going to have to dig through those.

Thanks Acord.

Marv

Probably how I would do it, most likely not the best way...
I would have 4 sensors, one for up, down, left and right.

Example:
Enemy_Object Would be Ball Movement
'Enemy_Object collides with Sensor_Up
Set Alt Value A to 1'
'Alt Value A = 1
Set Direction of Enemy_Object to Up'

A different number for each direction. Put these sensors on the walls, floors, etc. And just make sure Enemy_Object touches these sensors.

Right... but what if your enemy gets interrupted or knocked off, or you want them to be able to go the other way?

Look at the EnemyWidget of Solgryn!

It's really an excellent help for solve your problem.

I checked that widget out, but I'm not sure of how it will be useful to make enemies scale walls...

this may give you some ideas.. maybe

http://www.clickteam.com/epicenter/ubbthreads.php?ubb=showflat&Number=13006&Searchpag e=4&Main=1773&Words=metroid&Search=true#Post13006

That is exactly what I was looking for! Thanks.