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inform7/resources/Documentation/Examples/View.txt
2022-04-13 10:37:42 +01:00

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* Changing reachability
(Backdrops which can only be examined; Waterworld)
A backdrop which the player can examine, but cannot interact with in any other way.
It's tempting to handle the player's inability to interact with something with a simple instead rule:
{*}"Waterworld 1"
A view is a kind of backdrop. Instead of doing something other than examining to a view, say "You are too far from [the noun] to do anything but look."
The sun is a view. It is everywhere. The description is "A blazing sun makes you wish you had never been born."
The Sahara is a room. North of the Sahara is More Sahara. North of More Sahara is Yet Further Sahara.
Test me with "x sun / get sun / n / x sun / n / x sun".
Unfortunately, the rule does not address the case where the object in question is the second noun; so for instance the following example reveals the difficulty:
{*}"Waterworld 2"
A view is a kind of backdrop. Instead of doing something other than examining to a view, say "You are too far from [the noun] to do anything but look."
The player carries a rope.
The sun is a view. It is everywhere. The description is "A blazing sun makes you wish you had never been born."
The Sahara is a room. North of the Sahara is More Sahara. North of More Sahara is Yet Further Sahara.
Test me with "x sun / get sun / n / x sun / n / x sun / tie rope to the sun".
...where the response here behaves as though the sun is in reach. If we had a fully implemented tying action, the player would (even more disastrously) be allowed to lasso celestial objects.
We could add a second instead rule as well:
{*}"Waterworld 3"
A view is a kind of backdrop.
Instead of doing something other than examining when the noun is a view:
say "You are too far from [the noun] to do anything but look."
Instead of doing something other than examining when the second noun is a view:
say "You are too far from [the second noun] to do anything but look."
The player carries a rope.
The sun is a view. It is everywhere. The description is "A blazing sun makes you wish you had never been born."
The Sahara is a room. North of the Sahara is More Sahara. North of More Sahara is Yet Further Sahara.
Test me with "x sun / get sun / n / x sun / n / x sun / tie rope to sun".