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CitizensNPC.java
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CitizensNPC.java
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package net.citizensnpcs.npc;
import java.util.Collection;
import net.citizensnpcs.NPCNeedsRespawnEvent;
import net.citizensnpcs.Settings.Setting;
import net.citizensnpcs.api.CitizensAPI;
import net.citizensnpcs.api.ai.Navigator;
import net.citizensnpcs.api.event.DespawnReason;
import net.citizensnpcs.api.event.NPCDespawnEvent;
import net.citizensnpcs.api.event.NPCSpawnEvent;
import net.citizensnpcs.api.npc.AbstractNPC;
import net.citizensnpcs.api.trait.Trait;
import net.citizensnpcs.api.trait.trait.Spawned;
import net.citizensnpcs.api.util.DataKey;
import net.citizensnpcs.api.util.Messaging;
import net.citizensnpcs.npc.ai.CitizensNavigator;
import net.citizensnpcs.trait.CurrentLocation;
import net.citizensnpcs.util.Messages;
import net.citizensnpcs.util.NMS;
import net.citizensnpcs.util.Util;
import net.minecraft.server.v1_6_R2.EntityLiving;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.craftbukkit.v1_6_R2.entity.CraftLivingEntity;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.LivingEntity;
import org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason;
import org.bukkit.metadata.FixedMetadataValue;
import com.google.common.base.Preconditions;
import com.google.common.base.Throwables;
public class CitizensNPC extends AbstractNPC {
private EntityController entityController;
private final CitizensNavigator navigator = new CitizensNavigator(this);
public CitizensNPC(int id, String name, EntityController entityController) {
super(id, name);
Preconditions.checkNotNull(entityController);
this.entityController = entityController;
}
@Override
public boolean despawn(DespawnReason reason) {
if (!isSpawned()) {
Messaging.debug("Tried to despawn", getId(), "while already despawned.");
return false;
}
NPCDespawnEvent event = new NPCDespawnEvent(this, reason);
if (reason == DespawnReason.CHUNK_UNLOAD)
event.setCancelled(Setting.KEEP_CHUNKS_LOADED.asBoolean());
Bukkit.getPluginManager().callEvent(event);
if (event.isCancelled()) {
getBukkitEntity().getLocation().getChunk().load();
Messaging.debug("Couldn't despawn", getId(), "due to despawn event cancellation. Force loaded chunk.");
return false;
}
boolean keepSelected = getTrait(Spawned.class).shouldSpawn();
if (!keepSelected)
data().remove("selectors");
for (Trait trait : traits.values())
trait.onDespawn();
navigator.onDespawn();
entityController.remove();
return true;
}
@Override
public void faceLocation(Location location) {
if (!isSpawned())
return;
Util.faceLocation(getBukkitEntity(), location);
}
@Override
public LivingEntity getBukkitEntity() {
return entityController == null ? null : entityController.getBukkitEntity();
}
@Override
public Navigator getNavigator() {
return navigator;
}
@Override
public Location getStoredLocation() {
return isSpawned() ? getBukkitEntity().getLocation() : getTrait(CurrentLocation.class).getLocation();
}
@Override
public boolean isSpawned() {
return getBukkitEntity() != null;
}
@Override
public void load(final DataKey root) {
super.load(root);
// Spawn the NPC
CurrentLocation spawnLocation = getTrait(CurrentLocation.class);
if (getTrait(Spawned.class).shouldSpawn() && spawnLocation.getLocation() != null)
spawn(spawnLocation.getLocation());
navigator.load(root.getRelative("navigator"));
}
@Override
public void save(DataKey root) {
super.save(root);
navigator.save(root.getRelative("navigator"));
}
@Override
public void setBukkitEntityType(EntityType type) {
EntityController controller = EntityControllers.createForType(type);
if (controller == null)
throw new IllegalArgumentException("Unsupported entity type " + type);
setEntityController(controller);
}
public void setEntityController(EntityController newController) {
Preconditions.checkNotNull(newController);
boolean wasSpawned = isSpawned();
Location prev = null;
if (wasSpawned) {
prev = getBukkitEntity().getLocation();
despawn(DespawnReason.PENDING_RESPAWN);
}
entityController = newController;
if (wasSpawned) {
spawn(prev);
}
}
@Override
public boolean spawn(Location at) {
Preconditions.checkNotNull(at, "location cannot be null");
if (isSpawned()) {
Messaging.debug("Tried to spawn", getId(), "while already spawned.");
return false;
}
entityController.spawn(at, this);
EntityLiving mcEntity = ((CraftLivingEntity) getBukkitEntity()).getHandle();
boolean couldSpawn = !Util.isLoaded(at) ? false : mcEntity.world.addEntity(mcEntity, SpawnReason.CUSTOM);
mcEntity.setPositionRotation(at.getX(), at.getY(), at.getZ(), at.getYaw(), at.getPitch());
if (!couldSpawn) {
Messaging.debug("Retrying spawn of", getId(), "later due to chunk being unloaded.");
// we need to wait for a chunk load before trying to spawn
entityController.remove();
Bukkit.getPluginManager().callEvent(new NPCNeedsRespawnEvent(this, at));
return true;
}
NMS.setHeadYaw(mcEntity, at.getYaw());
NPCSpawnEvent spawnEvent = new NPCSpawnEvent(this, at);
Bukkit.getPluginManager().callEvent(spawnEvent);
if (spawnEvent.isCancelled()) {
entityController.remove();
Messaging.debug("Couldn't spawn", getId(), "due to event cancellation.");
return false;
}
getBukkitEntity().setMetadata(NPC_METADATA_MARKER, new FixedMetadataValue(CitizensAPI.getPlugin(), true));
// Set the spawned state
getTrait(CurrentLocation.class).setLocation(at);
getTrait(Spawned.class).setSpawned(true);
navigator.onSpawn();
// Modify NPC using traits after the entity has been created
Collection<Trait> onSpawn = traits.values();
// work around traits modifying the map during this iteration.
for (Trait trait : onSpawn.toArray(new Trait[onSpawn.size()])) {
try {
trait.onSpawn();
} catch (Throwable ex) {
Messaging.severeTr(Messages.TRAIT_ONSPAWN_FAILED, trait.getName(), getId());
ex.printStackTrace();
}
}
getBukkitEntity().setRemoveWhenFarAway(false);
getBukkitEntity().setCustomName(getFullName());
return true;
}
@Override
public void update() {
try {
super.update();
if (isSpawned()) {
NMS.trySwim(getBukkitEntity());
navigator.run();
}
} catch (Exception ex) {
Throwable error = Throwables.getRootCause(ex);
Messaging.logTr(Messages.EXCEPTION_UPDATING_NPC, getId(), error.getMessage());
error.printStackTrace();
}
}
private static final String NPC_METADATA_MARKER = "NPC";
}