var GetTilesWithin = require('./GetTilesWithin'); 
var WeightedRandomize = function (tileX, tileY, width, height, weightedIndexes, layer){ 
if (weightedIndexes === undefined) { 
return ; 
} 
var i; 
var tiles = GetTilesWithin(tileX, tileY, width, height, null , layer); 
var weightTotal = 0; 
for (i = 0; i < _AN_Read_length('length', weightedIndexes); i++ ){ 
weightTotal += weightedIndexes[i].weight; 
} 
if (weightTotal <= 0) { 
return ; 
} 
for (i = 0; i < _AN_Read_length('length', tiles); i++ ){ 
var rand = Math.random() * weightTotal; 
var sum = 0; 
var randomIndex = -1; 
for (var j = 0; 
j < _AN_Read_length('length', weightedIndexes); j++ ){ 
sum += weightedIndexes[j].weight; 
if (rand <= sum) { 
var chosen = weightedIndexes[j].index; 
randomIndex = Array.isArray(chosen)? chosen[Math.floor(Math.random() * _AN_Read_length('length', chosen))]: chosen; 
break ; 
} 
} 
tiles[i].index = randomIndex; 
} 
} 
; 
module.exports = WeightedRandomize;