Moved PDDL example instances to subdirectory.

instances/PDDL/ipc-2002-depots-strips/domain.pddl

@@ -0,0 +1,42 @@
+(define (domain Depot)
+(:requirements :typing)
+(:types place locatable - object
+	depot distributor - place
+        truck hoist surface - locatable
+        pallet crate - surface)
+
+(:predicates (at ?x - locatable ?y - place) 
+             (on ?x - crate ?y - surface)
+             (in ?x - crate ?y - truck)
+             (lifting ?x - hoist ?y - crate)
+             (available ?x - hoist)
+             (clear ?x - surface))
+	
+(:action Drive
+:parameters (?x - truck ?y - place ?z - place) 
+:precondition (and (at ?x ?y))
+:effect (and (not (at ?x ?y)) (at ?x ?z)))
+
+(:action Lift
+:parameters (?x - hoist ?y - crate ?z - surface ?p - place)
+:precondition (and (at ?x ?p) (available ?x) (at ?y ?p) (on ?y ?z) (clear ?y))
+:effect (and (not (at ?y ?p)) (lifting ?x ?y) (not (clear ?y)) (not (available ?x)) 
+             (clear ?z) (not (on ?y ?z))))
+
+(:action Drop 
+:parameters (?x - hoist ?y - crate ?z - surface ?p - place)
+:precondition (and (at ?x ?p) (at ?z ?p) (clear ?z) (lifting ?x ?y))
+:effect (and (available ?x) (not (lifting ?x ?y)) (at ?y ?p) (not (clear ?z)) (clear ?y)
+		(on ?y ?z)))
+
+(:action Load
+:parameters (?x - hoist ?y - crate ?z - truck ?p - place)
+:precondition (and (at ?x ?p) (at ?z ?p) (lifting ?x ?y))
+:effect (and (not (lifting ?x ?y)) (in ?y ?z) (available ?x)))
+
+(:action Unload 
+:parameters (?x - hoist ?y - crate ?z - truck ?p - place)
+:precondition (and (at ?x ?p) (at ?z ?p) (available ?x) (in ?y ?z))
+:effect (and (not (in ?y ?z)) (not (available ?x)) (lifting ?x ?y)))
+
+)