Being Prepared

Example 56

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A kind for jackets, which always includes a container called a pocket.

Play/modify in Borogove

Play in Quixe

"Being Prepared"

A jacket is a kind of thing. A jacket is always wearable.

A pocket is a kind of container. A pocket is part of every jacket. The carrying capacity of a pocket is always 2.

After examining a jacket:

let target be a random pocket which is part of the noun;

say "[The target] contains [a list of things in the target]."

Now we've created the rules that will govern any specific jackets we might happen to put in our game: each one will always have one pocket, which will be able to contain no more than two things. The description of "a list of things" is text with a list, which we will learn about further in a few sections.

Next we might want to create the environment and an actual example of the jacket kind:

Tent is a room. "A dome made of two flexible rods and a lot of bright green ripstop nylon. It bills itself as a one-man tent, but you'd call it a two-dwarf tent: there is no way to arrange yourself on its square floor so that you can stretch out completely."
 
The hoodie is a jacket. "Your hoodie is balled up in the corner." The description of the hoodie is "Both elbows are stained from yesterday's entrenching project."
 
The hoodie's pocket contains a Swiss army knife and a folded map. The hoodie is in the Tent.

Notice that, since Inform has created a pocket for the hoodie, we can now refer to it by name in our source, giving it any additional properties we need to define. Here we simply put a few items into it.

The player wears a whistle. The description of the whistle is "To frighten bears."
 
Test me with "x hoodie / get hoodie / get knife / get map / i / put hoodie in pocket / put whistle in pocket / put map in pocket / put knife in pocket / i".

Test me with "x hoodie / get hoodie / get knife / get map / i / put hoodie in pocket / put whistle in pocket / put map in pocket / put knife in pocket / i".

Tent
A dome made of two flexible rods and a lot of bright green ripstop nylon. It bills itself as a one-man tent, but you'd call it a two-dwarf tent: there is no way to arrange yourself on its square floor so that you can stretch out completely.

Your hoodie is balled up in the corner.

>(Testing.)

>[1] x hoodie
Both elbows are stained from yesterday's entrenching project.

The hoodie's pocket contains a Swiss army knife and a folded map.

>[2] get hoodie
Taken.

>[3] get knife
Taken.

>[4] get map
Taken.

>[5] i
You are carrying:
a folded map
a Swiss army knife
a hoodie
a whistle (being worn)

>[6] put hoodie in pocket
You can't put something inside itself.

>[7] put whistle in pocket
(first taking it off)
You put the whistle into the hoodie's pocket.

>[8] put map in pocket
You put the folded map into the hoodie's pocket.

>[9] put knife in pocket
There is no more room in the hoodie's pocket.

>[10] i
You are carrying:
a Swiss army knife
a hoodie

Notice that Inform automatically refuses to put the hoodie into its own pocket: as a default, a container cannot contain something of which it is itself a part.