/**
* Compute the direction to take
*
* @param IPaddress the destination address
* @param sign the BC sign
* @param RoutingTableWritable the routing table contained in the chest
* @return the direction to destination, or to ring 0. If ring 0 does not exist, random direction
*/
protected BlockFace SelectRoute(
AddressRouted IPaddress, Address sign, RoutingTableWritable RoutingTable) {
DirectionRegistry face;
// same region : lookup destination track
if (IPaddress != null
&& IPaddress.getRegion().getAmount() == sign.getRegion().getAmount()
&& IPaddress.getTTL() != 0) {
int destination = this.destination.getTrack().getAmount();
DirectionRegistry out = RoutingTable.getDirection(destination);
if (out != null) {
// trigger event
SignPreRouteEvent event =
new SignPreRouteEvent(this, this.getRoutingTable().getDirectlyConnected(out));
Bukkit.getServer().getPluginManager().callEvent(event);
return RoutingTable.getDirection(event.getTargetTrack()).getBlockFace();
}
}
// If not in same region, or if TTL is 0, or the ring does not exist then we lookup track 0
if ((face = RoutingTable.getDirection(0)) != null) return face.getBlockFace();
// If everything has failed, then we randomize output direction
return AbstractWanderer.getRandomBlockFace(RoutingTable, getCardinal().getOppositeFace());
}
@Override
public BlockFace giveRouterDirection() {
// check if we are in the good region
if (this.getSignAddress().isValid()
&& this.getSignAddress().getRegion().getAmount() != getWandererRegion()) {
// case this is not the right region
DirectionRegistry dir = RoutingTable.getDirection(getWandererRegion());
if (dir != null) return dir.getBlockFace();
return this.getFrom().getBlockFace();
}
// the route where we went the lesser
int preferredroute = this.getContent().getMinDistanceRing(RoutingTable, getFrom());
DirectionRegistry dir;
if ((dir = RoutingTable.getDirection(preferredroute)) != null) return dir.getBlockFace();
return DefaultRouterWanderer.getRandomBlockFace(RoutingTable, getFrom().getBlockFace());
}
