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From: Raffael Cavallaro on 3 May 2010 15:49
On 2010-05-03 11:51:53 -0400, His kennyness said:

> In something more complex such as a game, you will likely pass one
> parameter that is pretty much the entire universe (so the hooks can do
> what they like) and a second parameter that will be some object in the
> universe, such as a player instance.

This is, of course, answering the question he really should be asking -
how do I design the underlying architecture for my game?

For an interesting view along the lines that kenny mentions where each
routine takes a "world" parameter, see:

<http://www.cs.brown.edu/~sk/Publications/Talks/Moby-Bootstrap/>

listen to the audio of the talk while (optionally) viewing the ppt slides.
(yes, I know it's scheme, but you can do the same in lisp...)

warmest regards,

Ralph

--
Raffael Cavallaro

From: Krzysztof Drewniak on 3 May 2010 18:40
On 2010-05-03, Krzysztof Drewniak <krzysdrewniakNOSPAM(a)gmail.com> wrote:
> On 2010-05-03, Krzysztof Drewniak <krzysdrewniakNOSPAM(a)gmail.com> wrote:
> [split]
>> (let ((x 3))
>> (progn (print x) (+ 2 2)))
>> I am really lost on how to implement this. Any help?
>>
>> Krzysztof Drewniak
>>
>>
> The idea is this. For example, suppose there is a magic sword that
> makes all doors open on the first try with a clos method 'on' which
> takes as arguments a subclass of monster and subclass of object and
> puts the sword (object) on the monster. As a part of the method, the
> sword will create the actual effect by hooking into the 'open' method
> a (setf succeeded t) which would gaurantee the door would open. (This
> was the silly example).
>
> Krzysztof Drewniak
>
I forgot to mention, the method 'off' would also need to remove the hok.

--
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From: Krzysztof Drewniak on 3 May 2010 18:42
On 2010-05-03, Krzysztof Drewniak <krzysdrewniakNOSPAM(a)gmail.com> wrote:
[split]
> (let ((x 3))
> (progn (print x) (+ 2 2)))
> I am really lost on how to implement this. Any help?
>
> Krzysztof Drewniak
>
>
The idea is this. For example, suppose there is a magic sword that
makes all doors open on the first try with a clos method 'on' which
takes as arguments a subclass of monster and subclass of object and
puts the sword (object) on the monster. As a part of the method, the
sword will create the actual effect by hooking into the 'open' method
a (setf succeeded t) which would gaurantee the door would open. (This
was the silly example). There must also be an 'off' method that would
remove the object.

Krzysztof Drewniak

--
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pgp key on keyserver.ubuntu.com and maybe some other place too
From: Pascal J. Bourguignon on 3 May 2010 18:58
Krzysztof Drewniak <krzysdrewniakNOSPAM(a)gmail.com> writes:

> On 2010-05-03, Krzysztof Drewniak <krzysdrewniakNOSPAM(a)gmail.com> wrote:
> [split]
>> (let ((x 3))
>> (progn (print x) (+ 2 2)))
>> I am really lost on how to implement this. Any help?
>>
>> Krzysztof Drewniak
>>
>>
> The idea is this. For example, suppose there is a magic sword that
> makes all doors open on the first try with a clos method 'on' which
> takes as arguments a subclass of monster and subclass of object and
> puts the sword (object) on the monster. As a part of the method, the
> sword will create the actual effect by hooking into the 'open' method
> a (setf succeeded t) which would gaurantee the door would open. (This
> was the silly example). There must also be an 'off' method that would
> remove the object.

Yes. And the rest is called 'programming'.

--
__Pascal Bourguignon__
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