Introducing object-oriented API to avoid global state

[yvt]

Now nodes can be built and passed around as a single object, and no name collisions would occur.

jsonLoader.load( 'meshes/level.nav.js', function( geometry, materials ) {
    var zoneNodes = patrol.buildNodes(geometry);

    // Set the player's navigation mesh group
    playerNavMeshGroup = zoneNodes.getGroup(player.position);

    // Calculate a path to the target
    calculatedPath = zoneNodes.findPath(player.position, target.position, playerNavMeshGroup);
}, null);

The old API is preserved for compatibility.