/* Renders one case to rows [tick,lane,voice,vel,len,track] per bar, plus a whole-case checksum. */
var E=require('../sim/engine.js');
function hex(n){ return '0x'+('00000000'+(n>>>0).toString(16).toUpperCase()).slice(-8); }
function renderCase(c,bars){
  var st={seed:c.seed>>>0,salts:c.salts.slice()}, all=[], out=[];
  for(var b=0;b<bars;b++){
    var r=E.renderBar(st,{gen:c.gen,energy:c.energy,drift:c.drift,fill:c.fillBars.indexOf(b)>=0,scale:c.scale,root:c.root},b);
    var ev=r.events.map(function(e){ return [e.t,e.lane,e.v,e.vel,e.len,e.tr]; });
    out.push({bar:b,sec:r.sec,fill:!!r.fill,barTicks:r.barTicks,events:ev}); all=all.concat(ev);
  }
  return {bars:out,checksum:hex(E.checksum(all))};
}
function caseId(c){ return hex(c.seed).slice(2)+'_s'+c.salts.join('-')+'_g'+c.gen+'_e'+c.energy+'_d'+c.drift+(c.fillBars.length?'_f'+c.fillBars.join('-'):'')+(c.scale>=0?'_sc'+c.scale:'')+(c.root>=0?'_r'+c.root:''); }
module.exports={renderCase:renderCase,caseId:caseId,hex:hex};