RWL

// ---------------------------------------------------------------
// A first demonstration of the Recursive World Language (RWL)
//  Defines a corridor-like square closed loop
//
//  Author: Jose Luis Blanco Claraco, Oct 25 2011.
// ---------------------------------------------------------------

// Description of the language:
//  - Comments (like these) start with a C style comment "//"
//  - Multi-line comments (/* ... */) are not allowed.
//  - The central component of RWL programs are "lists", sequenecs of
//     primitives and calls to other lists.
//  - A list is always declared as:
//      LIST <NAME>
//        <primitives>
//      ENDLIST
//  - The entrance point is always a list named "main"
//

LIST corridor_1  // A simple corridor segment of length=1m
	LM +0.2 -0.4 0
	LM +0.2 +0.4 0
	LM +0.6 -0.4 0
	LM +0.6 +0.4 0
	X+= 1
ENDLIST

LIST corridor_10  // A 10m corridor
	CALL *10 corridor_1
	NODE
ENDLIST

LIST main
	// At the origin there is always a "node", there is no need to
	//  manually create it.
	// Start creating the corridors:
	CALL corridor_10
	YAW+= 90
	CALL corridor_10
	YAW+= 90
	CALL corridor_10
	YAW+= 90
	CALL corridor_10
ENDLIST