magic calc.js

var int = 540;
var luk = 13;
var magic = 607;
var mastery = 0.6;
var skillPercentage = 100;
var lines = 1;
var elementalMult = 0.5;
var amplification = 1.75;
var playerLevel = 104;

var mobHP = 4200;
var mobMDef = 210;
var mobLevel = 53;
var mobAvoid = 25;

var max = ((magic*magic/1000 + magic)/30 + int/200) * skillPercentage * elementalMult * amplification;
var min = ((magic*magic/1000 + magic*mastery*0.9)/30 + int/200) * skillPercentage * elementalMult * amplification;

var levelDiff = Math.max(0, mobLevel - playerLevel);
max -= mobMDef * 0.5 * (1 + 0.01*levelDiff);
min -= mobMDef * 0.6 * (1 + 0.01*levelDiff);

var x = (Math.floor(int/10) + Math.floor(luk/10))/((mobAvoid + 1)*(1 + 0.0415*levelDiff));
var hitrate = x > 52343/51590 ? 1 : Math.max(0, -2.5795*x*x + 5.2343*x - 1.6749);

var mean = (min+max)/2;
var approx = mobHP/(hitrate*mean*lines);
WScript.echo("min = "+min+"\nmax = "+max+"\nmean = "+mean+"\n(x"+lines+")\nhitrate = "+hitrate+"\n(approximately) number of hits = "+approx);
WScript.sleep(10000);