More audio triggers since you have only 11 SFX slots

[AlienBanana-purplegreen]

___ bump ___ - second field is optional, triggers when x tries to walk somewhere but is stopped by y (eg. A wall)
___ step ___ - second field mandatory, triggers when x walks on a tile with y

[david-pfx]

1. You're supposed to be able to use SFXNNN for any number, but I confess it may not have been tested well.
2. 'bump' sounds like CANT_MOVE, or a simple rule
3. Isn't 'step' easy to do with a rule?

[AlienBanana-purplegreen]

my greatest apologies, It seems I have not been aware of the thousand-slot property of sounds, how foolish of me.

[david-pfx]

No really surprising, considering it doesn't seem to be documented. Must get onto that (and test it too).
Thanks!