Arabian Labyrinth by Ryan Veeder

Arabian Labyrinth

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"Arabian Labyrinth" by Ryan Veeder

The story headline is "An example".

Desert is a room. "You are hopelessly lost."

[In newer versions of Inform 7, "Longitude is initially 0" is enough to indicate to the compiler that Longitude is a number variable. In the version used by Playfic, we must be more explicit:]

Longitude is a number that varies. Longitude is 0.
Latitude is a number that varies. Longitude is 0.

Check going while player is in Desert (this is the desert movement rule):
	if the noun is a direction listed in the Table of Direction Values:
		choose row with direction of the noun in Table of Direction Values;
		now longitude is longitude plus delta-long entry;
		now latitude is latitude plus delta-lat entry;
		follow desert scenery rules;
		say "You trudge toward [the noun].”;
		try looking instead.

Table of Direction Values
direction	delta-long	delta-lat
north	0	1
northeast	1	1
east	1	0
southeast	1	-1
south	0	-1
southwest	-1	-1
west	-1	0
northwest	-1	1

Before going while player is in Desert:
	if (the noun is northwest or the noun is north or the noun is northeast) and latitude is 50:
		say "The sandstorms become too thick to navigate in that direction." instead.

Before going while player is in Desert:
	if the noun is east and longitude is 50:
		say "You trudge toward [the noun].";
		try looking instead.

Before dropping something while player is in Desert:
	say "Oh, but that would be littering! Which is bad." instead.

Desert scenery rules is a rulebook.

A desert scenery rule (this is the bleached skull appearance rule):
	if longitude is 1 and latitude is 1:
		now the bleached skull is in the location;
	else:
		remove the bleached skull from play.
		
The bleached skull is a fixed in place thing.

A desert scenery rule (this is the sandstorms appearance rule):
	if latitude is 50:
		now the sandstorms are in the location;
	else:
		remove the sandstorms from play.

Some sandstorms are a fixed in place thing.

A desert scenery rule (this is the oasis appearance rule):
	if latitude is -45 and longitude is 38:
		now the oasis is in the location;
	else:
		remove the oasis from play.
		
The oasis is a fixed in place thing.

The player carries the scrap of paper. The description of the scrap of paper is "The numbers (-45,38) are still barely legible."

The player carries the GPS. The description of the GPS is "This thing says your current coordinates are ([latitude],[longitude])."