That was exactly the problem, thanks. What is the general rule for function
calling in Jess, always without parentheses? I never would have caught that
error because when I see something like get-next-build-tile() the
parentheses tell me it is a function. Seeing it without the parens makes me
think it is a variable, even without the ? sign is front.
Also, as a corollary question; I am using an enumerated type in my rule:
(import eisbot.proxy.types.UnitType$UnitTypes)
(defrule build-supply-depot
(minerals (value ?x&:(> ?x 100)))
=>
(try
(foreach ?u (?*bwapi* getMyUnits)
(if (= (?u getTypeID) ?*SCV_ID*) then
(bind ?p (call get-next-build-tile()))
(call ?*bwapi* drawCircle ?p.x ?p.y 100 111 FALSE FALSE)
* (call ?*bwapi* build (?u getID) ?p.x ?p.y
(UnitType$UnitTypes.Terran_Supply_Depot ordinal))*
(break)))
catch
(printout t (call ?ERROR toString) crlf)
)
)
But after importing when my rule tries to execute the bolded line above, I
get a class not found exception:
Message: Class not found.
at jess.dx.call(Unknown Source)
at jess.ac.a(Unknown Source)
at jess.Funcall.execute(Unknown Source)
at jess.FuncallValue.resolveValue(Unknown Source)
at jess.dx.call(Unknown Source)
at jess.ac.a(Unknown Source)
at jess.Funcall.execute(Unknown Source)
at jess.FuncallValue.resolveValue(Unknown Source)
at jess.f4.call(Unknown Source)
at jess.ac.a(Unknown Source)
at jess.Funcall.execute(Unknown Source)
at jess.FuncallValue.resolveValue(Unknown Source)
at jess.cu.a(Unknown Source)
at jess.cu.call(Unknown Source)
at jess.ac.a(Unknown Source)
at jess.Funcall.execute(Unknown Source)
at jess.Defrule.a(Unknown Source)
at jess.Activation.a(Unknown Source)
at jess.en.a(Unknown Source)
at jess.en.a(Unknown Source)
at jess.Rete.if(Unknown Source)
at jess.Rete.run(Unknown Source)
at hunterai.HunterAIClient.gameUpdate(HunterAIClient.java:156)
at eisbot.proxy.JNIBWAPI.gameUpdate(JNIBWAPI.java:795)
at eisbot.proxy.JNIBWAPI.startClient(Native Method)
at eisbot.proxy.JNIBWAPI.start(JNIBWAPI.java:597)
at hunterai.HunterAIClient.start(HunterAIClient.java:102)
at hunterai.HunterAIClient.main(HunterAIClient.java:42)
Caused by: java.lang.ClassNotFoundException: new
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at jess.dc.for(Unknown Source)
at jess.dc.if(Unknown Source)
at jess.Rete.findClass(Unknown Source)
... 28 more
any ideas?
Hunter
On Mon, Mar 12, 2012 at 1:48 PM, Friedman-Hill, Ernest
<ejfr...@sandia.gov>wrote:
> OK, I looked in the magic decoder file and I see a "call" being invoked
> inside a "bind", so that fits only the line of code below. And lo and
> behold, look at it: the second argument to "call", which should be the name
> of the function to call, is a pair of empty parentheses — i.e., a list.
> This line is asking Jess to to call the static method named "()" on the
> class named "get-next-build-tile" -- surely not what you intended. If
> you're just calling a deffunction by this name, then you just want
>
> (bind ?p (get-next-build-tile))
>
> From: Hunter McMillen <mcmil...@gmail.com>
> Reply-To: <jess-users@sandia.gov>
> Date: Mon, 12 Mar 2012 12:16:29 -0400
> To: <jess-users@sandia.gov>
> Subject: Re: JESS: [EXTERNAL] Jess exception: ' ' is a list, not a string
>
> (bind ?p (call get-next-build-tile()))
>
>
