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http://www.mozilla.org/rhino/

Just thought I'd post this here. Rhino is an open-source library for embedding javascript support in your Java applications. We'll definitely need scripting in our projects, so this is an interesting resource. I don't know how usable it will be yet, particularly I wonder how good we can conceal our Java internals from scripts (e.g. does it access objects and methods directly, or do we make some kind of mapping), but we should research that, before writing our own script system.

Good find; definitely worth looking into further, and if it meets our needs, by all means we can use it.

Another options is BeanShell, which is approximately the same, except it uses Java syntax, which owns JS any day

I've checked out both options, but so far Rhino seems the best choice (even if Java is better than JS). BeanShell can access our classes and objects very directly, while Rhino allows us to hide a lot of things from scripts, or give them different names. Rhino also easily lets you set the scope of a script (e.g. globally or just within the object or action).

I think Rhino sounds like the better option.  It seems to offer more abstraction, which is really what we need here.  More abstraction means fewer details the script writers need to worry about.

pure Java would work fine. Java has classes that can compile and execute a newly compiled class file. If you want more information 2playgames Ill be on msn!

-Phil

Hmm, sounds interesting. However, unless I'm mistaken, we can't really use that, because we need the scripts to see a different interface than our own internal classes.

It's a matter of abstraction; we need an extra layer for scripting purposes.