Efficient way to run multiple scripts using javax.script -

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i developing game i'd have multiple scripts implement same structure. each script need run in own scope code doesn't overlap other scripts. example:

structure.js

function oninit() {     // define resources load, collision vars, etc. }  function onloop() {     // every loop }  function clickevent() {    // clicked me }  // other fun functions

now, lets have: "badguy.js", "reallyreallybadguy.js", "otherbadguy.js" - above in terms of structure. within game whenever event takes place, i'd invoke appropriate function.

the problem comes down efficiency , speed. found working solution creating engine each script instance (using getenginebyname), doesn't seem ideal me.

if there isn't better solution, i'll resort each script having own unique class / function names. i.e.

badguy.js

var badguy = new object();  badguy.clickevent = function() { }

i don't think need create new scriptengine every "guy". can manage them in 1 engine. advance apologies butchering game scenario.....

  1. get 1 instance of rhino engine.
  2. issue eval(script) statements add new js objects engine, along different behaviours (or functions) want these objects support.
  3. you have couple of different choices invoking against each one, long each "guy" has unique name, can reference them name , invoke named method against it.
  4. for more performance sensitive operations (perhaps sort of round based event loop) can precompile script in same engine can executed without having re-evaluate source.

here's sample wrote in groovy.

import javax.script.*; sem = new scriptenginemanager(); engine = sem.getenginebyextension("js"); engine.getbindings(scriptcontext.engine_scope).put("out", system.out); eventloop = "for(guy in allguys) { out.println(allguys[guy].action(action)); }; " engine.eval("var allguys = []"); engine.eval("var badguy = new object(); allguys.push(badguy); badguy.clickevent = function() { return 'i badguy' }; badguy.action = function(activity) { return 'i doing ' + activity + ' in bad way' }"); engine.eval("var goodguy = new object(); allguys.push(goodguy); goodguy.clickevent = function() { return 'i goodguy' }; goodguy.action = function(activity) { return 'i doing ' + activity + ' in way' }"); compiledscript executeevents = engine.compile(eventloop); println engine.invokemethod(engine.get("badguy"), "clickevent"); println engine.invokemethod(engine.get("goodguy"), "clickevent"); engine.getbindings(scriptcontext.engine_scope).put("action", "knitting"); executeevents.eval();

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