Demo: Modelling Cost of Travel Paths Between Towns

More specifically, the example represents the following things: Four towns named a, b, c, d (imagine them forming a square). There are paths from a to b, b to c, c to d and d to a. There are also opposite paths from a to d, d to c, c to b and b to a. In addition, there are two uni-directional cross paths, one from a to c and the second from b to d. The cost of travel from town a to town b on Monday between 00:00 and 24:00 is 1.00.

The script below stores above things:

// Create towns a, b, c, d

CREATE2 *town.cls = thing;
CREATE2 *a.cls = town;
CREATE2 *b.cls = town;
CREATE2 *c.cls = town;
CREATE2 *d.cls = town;

// Create directional verb "to"
// which leads to lower level (aka creature)
CREATE2 *goto.cls = verb;
CREATE2 goto.vbType = cr;

// Create a square shaped graph
// Note: outer paths are bi-dir

CREATE2 a.goto = b;
CREATE2 b.goto = a;

CREATE2 b.goto = c;
CREATE2 c.goto = b;

CREATE2 c.goto = d;
CREATE2 d.to = c;

CREATE2 d.goto = a;
CREATE2 a.goto = d;

// Note: inner cross paths are uni-dir

CREATE2 a.goto = c;
CREATE2 b.goto = d;

// Create weekdays

CREATE2 *weekday.cls = thing;

// Create start time of day (inclusive)
CREATE2 *start.cls = thing;

// Create end time of day (exclusive)

CREATE2 *end.cls = thing;

// Create costs

CREATE2 *cost.cls = thing;

// Create it cost 1.00 to go from town a to town b
// on monday between 00:00 and 24:00

CREATE2 (a.goto=b).weekday = +monday;
CREATE2 ((a.goto=b).weekday=monday).start = +00:00;
CREATE2 (((a.goto=b).weekday=monday).start=00:00).end = +24:00;
CREATE2 ((((a.goto=b).weekday=monday).start=00:00).end=24:00).cost =