Working the modules into Shared, untested

Shared/calc_random.js

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+//initialize the exports
+exports = module.exports = {};
+
+//Random
+//low - the inclusive lower bounds of the result
+//high - the inclusive higher bounds of the result
+exports.Random = function(low, high) {
+	//inclusive high
+	return Math.floor(Math.random() * (high - low + 1) + low);
+}
+
+//Gamble (depreciated)
+//percentage - chance of winning as a percentage
+exports.Gamble = function(percentage) {
+	// Random generation by %
+	return exports.Random(1, 100) <= percentage;
+}