pathCache.js

function getCachedPath(originPosition, destinationPosition)
{
    var originString = originPosition.roomName + "x" + originPosition.x + "y" + originPosition.y;
    var destinationString = destinationPosition.roomName + "x" + destinationPosition.x + "y" + destinationPosition.y;

    if(Memory.pathCache === undefined)
    {
        Memory.pathCache = {};
    }

    if(Memory.pathCache[originString] === undefined)
    {
        Memory.pathCache[originString] = {};
    }

    if(Memory.pathCache[originString][destinationString] === undefined || Memory.pathCache[originString][destinationString].length === 0)
    {
        Memory.pathCache[originString][destinationString] = originPosition.findPathTo(destinationPosition, {ignoreCreeps: true});
        //console.log('Generating path to ' + destinationString + ' from ' + originString + ' length: ' + Memory.pathCache[originString][destinationString].length);
    }

    else
    {
        //console.log('Cache hit to ' + destinationString + ' from ' + originString + " " + Memory.pathCache[originString][destinationString].length);
    }

    return Memory.pathCache[originString][destinationString];
}