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NameplateTrait.java
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NameplateTrait.java
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package net.aufdemrand.denizen.npc.traits;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.ConcurrentHashMap;
import net.aufdemrand.denizen.utilities.DenizenAPI;
import net.aufdemrand.denizen.utilities.depends.Depends;
import net.citizensnpcs.api.npc.NPC;
import net.citizensnpcs.api.persistence.Persist;
import net.citizensnpcs.api.trait.Trait;
import net.citizensnpcs.api.util.DataKey;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.event.Listener;
/**
* <p>Adds the ability to change the nameplate (aka nametag) above a NPC's head and
* add colors like red, green, blue and gold. Special cases like the magic color
* are also being supported</p>
*
* <p>Once an NPC with the nameplate trait is being spawned (or the nameplate is
* being changed by commands) the server checks against the specific packet and
* modifies it.</p>
*
* <p><b>Please mind that the nameplates can only be 16 characters long,
* including the color codes!</b></p>
*/
public class NameplateTrait extends Trait implements Listener {
private final static String DEFAULT_KEY = "_default_";
@Persist("text")
private String text = null;
@Persist(value="colors", collectionType=ConcurrentHashMap.class)
private Map<String, ChatColor> colors = new ConcurrentHashMap<String, ChatColor>();
public NameplateTrait() {
super("nameplate");
}
@Override
public void onSpawn() {
if(text != null) {
Bukkit.getScheduler().scheduleSyncDelayedTask(DenizenAPI.getCurrentInstance(),
new Runnable() {
@Override
public void run() {
npc.getBukkitEntity().setCustomNameVisible(true);
npc.getBukkitEntity().setCustomName(text);
}
}, 2);
}
if(getColor() != null ) {
refreshTag( getNPC() );
}
}
@Override
public void onDespawn() {
if (npc.getBukkitEntity().getCustomName() != null)
text = npc.getBukkitEntity().getCustomName();
}
public void setColor(ChatColor color) {
this.setColor(color, DEFAULT_KEY);
}
public void setColor(ChatColor color, String player) {
this.colors.put(player, color);
refreshTag( getNPC() );
}
/**
* Returns the {@link ChatColor} prefixed to the nameplate
*
* @return The stored {@link ChatColor}
*/
public ChatColor getColor() {
return colors.get(DEFAULT_KEY);
}
/**
* Returns the {@link ChatColor} prefixed to the nameplate for a specific
* player.
*
* @param player The player name
* @return The stored {@link ChatColor} for the specific player
*/
public ChatColor getColor(String player) {
if(!colors.containsKey(player)) return getColor();
else return colors.get(player);
}
/**
* Returns true if a color has been set
*
* @return True if set, otherwise false
*/
public boolean hasColor() {
return getColor() != null;
}
/**
* Returns true if a color has been set for this player
*
* @param player The player name to check
* @return True if set, otherwise false
*/
public boolean hasColor(String player) {
return getColor(player) != null;
}
/**
* Retrieve the trimmed nameplate including the set color (max. 16 chars).
*
* @return The trimmed nameplate including color
*/
public String getTrimmedTag() {
return getTrimmedTag(DEFAULT_KEY);
}
/**
* Retrieve the trimmed nameplate including the set color (max. 16 chars) for
* the specific player.
*
* @param player The player name
* @return The trimmed nameplate including color
*/
public String getTrimmedTag(String player) {
String tag = getNPC().getName();
ChatColor c = getColor(player);
if(c != null) tag = c + tag;
if(tag.length() > 16) tag = tag.substring(0, 16);
return tag;
}
public void refreshTag(NPC npc) {
if( Depends.protocolManager == null || !npc.isSpawned() ) return;
int maxDistance = Bukkit.getServer().getViewDistance() * 16;
List<Player> viewers = new ArrayList<Player>();
for (Player p : getPlayersInRadius(npc, maxDistance)) {
if( p.getEntityId() == npc.getBukkitEntity().getEntityId() ) continue;
viewers.add(p);
}
refreshTag(npc, viewers);
}
private void refreshTag(NPC npc, List<Player> players) {
Entity npcEntity = npc.getBukkitEntity();
if(npcEntity != null) {
Depends.protocolManager.updateEntity(npcEntity, players);
}
}
private List<Player> getPlayersInRadius( NPC npc, int distance ) {
List<Player> players = new ArrayList<Player>();
int dSquared = distance * distance;
Location loc = npc.getBukkitEntity().getLocation();
World world = npc.getBukkitEntity().getWorld();
for ( Player p : Bukkit.getServer().getOnlinePlayers()) {
if( p.getWorld() != world) continue;
if( p.getLocation().distanceSquared(loc) <= dSquared) {
players.add(p);
}
}
return players;
}
// @Override
// public void load(DataKey key) {
// for(DataKey k : key.getSubKeys()) {
// ChatColor c = null;
//
// try {
// c = ChatColor.valueOf(key.getString(k.name()));
// } catch( Exception e) {}
//
// colors.put(k.name(), c );
// }
// }
//
// @Override
// public void save(DataKey key) {
// for(Entry<String, ChatColor> entry: colors.entrySet()) {
// key.setString(entry.getKey(), entry.getValue().name());
// }
// }
}