Here’s a tweaked version of the extension.
[spoiler][code]Secret Doors by Andrew Owen begins here.
“Doors and switches that cannot be acted upon until they are discovered.”
A secret door is a kind of door.
A secret door can be revealed or unrevealed.
A secret door is unrevealed.
A secret door is scenery.
A secret door is closed.
A secret switch is a kind of thing.
A secret switch can be revealed or unrevealed.
A secret switch is unrevealed.
A secret switch is scenery.
To print the you can’t go message:
(- L__M(##Go, 2, 0); -).
To print the you can’t see message:
(- L__M(##Miscellany, 30, 0); -).
Before going through an unrevealed secret door:
print the you can’t go message instead.
Before doing something to an unrevealed secret door:
print the you can’t see message instead.
Before doing something when the second noun is an unrevealed secret door:
print the you can’t see message instead.
Before doing something to an unrevealed secret switch:
print the you can’t see message instead.
Before doing something when the second noun is an unrevealed secret switch:
print the you can’t see message instead.
Secret Doors ends here.
---- DOCUMENTATION ----
Secret Doors is an extension which provides robust support for hidden doors and hidden switches. It creates two new kinds: “secret door” (a kind of door) and “secret switch” (a kind of thing) with the properties “revealed” or “unrevealed”.
Example: * Secret Passage - A setting with lots of secrets.
*: "Secret Passage"
Include Secret Doors by Andrew Owen.
Instead of pulling the lever for the first time:
now the passage door is revealed;
now the passage door is open;
say "As you pull the lever, a secret door opens, revealing a secret passage!".
Instead of searching or examining the cave wall:
now the lever is revealed;
say "In a gap between two rocks you discover a lever.".
Instead of pulling the lever which is revealed for the first time:
now the passage door is revealed;
now the passage door is open;
say "As you pull the lever, a secret door opens, revealing a secret passage!".
The passage door is a secret door. The passage door is west of the Big Cave and east of the Secret Passage.
The lever is a secret switch in the Big Cave. The lever is fixed in place.
The cave wall is scenery in the Big Cave. The rock is in the big cave.
Test me with "w / pull lever / throw rock at lever / x wall / pull lever / w".
If the player attempts to walk through a secret door, the same response to attempting to travel in a non-existent direction is given:
>west
You can't go that way.
If the player attempts to interact with a secret switch, the same response to attempting to interact with a non-existent object is given:
>pull lever
You can't see any such thing!
>throw rock at lever
You can't see any such thing!
It might be that we want the switch to be in plain sight. In that case it should be defined as a normal object rather than a secret switch. On the other hand, if we want the switch to be hidden as well, then we need a way of revealing it so that it can be used.
[/code][/spoiler]
Hope this helps.