/**
* 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());
}
/* (non-Javadoc)
* @see com.github.catageek.ByteCart.Signs.Triggable#trigger()
*/
@Override
public void trigger() throws ClassNotFoundException, IOException {
CollisionAvoiderBuilder builder = new RouterCollisionAvoiderBuilder(this, center.getLocation());
try {
BlockFace direction, to;
Router router =
ByteCart.myPlugin.getCollisionAvoiderManager().<Router>getCollisionAvoider(builder);
boolean isTrain = AbstractTriggeredSign.isTrain(destination);
// Here begins the triggered action
// is this an wanderer who needs special routing ? no then routing normally
if (selectWanderer()) {
// if this is a cart in a train
if (this.wasTrain(this.getLocation())) {
// leave a message to next cart that it is a train
ByteCart.myPlugin.getIsTrainManager().getMap().reset(getLocation());
// tell to router not to change position
ByteCart.myPlugin
.getCollisionAvoiderManager()
.<Router>getCollisionAvoider(builder)
.Book(isTrain);
return;
}
if (destination != null) {
// Time-to-live management
// loading TTl of cart
int ttl = destination.getTTL();
// if ttl did not reach end of life ( = 0)
if (ttl != 0) {
destination.updateTTL(ttl - 1);
}
// if ttl was 1 (now 0), we try to return the cart to source station
if (ttl == 1 && tryReturnCart())
destination = AddressFactory.getAddress(this.getInventory());
if (ByteCart.debug) ByteCart.log.info("ByteCart : TTL is " + destination.getTTL());
// if this is the first car of a train
// we keep it during 2 s
if (isTrain) {
this.setWasTrain(this.getLocation(), true);
}
destination.finalizeAddress();
}
direction = this.SelectRoute(destination, Sign, RoutingTable);
// trigger event
BlockFace bdest = router.WishToGo(From, direction, isTrain);
int ring = this.getRoutingTable().getDirectlyConnected(new DirectionRegistry(bdest));
SignPostRouteEvent event = new SignPostRouteEvent(this, ring);
Bukkit.getServer().getPluginManager().callEvent(event);
return;
}
// it's a wanderer, so let it choosing direction
Wanderer wanderer = getWanderer();
// routing normally
to = router.WishToGo(From, wanderer.giveRouterDirection(), isTrain);
if (WandererContentFactory.isWanderer(getInventory(), "Updater")) {
int nextring = this.getRoutingTable().getDirectlyConnected(new DirectionRegistry(to));
UpdaterPassRouterEvent event = new UpdaterPassRouterEvent(wanderer, to, nextring);
Bukkit.getServer().getPluginManager().callEvent(event);
}
// here we perform routes update
wanderer.doAction(to);
} catch (ClassCastException e) {
if (ByteCart.debug) ByteCart.log.info("ByteCart : " + e.toString());
e.printStackTrace();
// Not the good blocks to build the signs
return;
} catch (NullPointerException e) {
if (ByteCart.debug) ByteCart.log.info("ByteCart : " + e.toString());
e.printStackTrace();
// there was no inventory in the cart
return;
}
}
/* (non-Javadoc)
* @see com.github.catageek.ByteCart.Signs.BCSign#getDestinationIP()
*/
@Override
public final String getDestinationIP() {
return destination.toString();
}