/
Packet209Mod.java
140 lines (110 loc) · 3.91 KB
/
Packet209Mod.java
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/**
* From @sgtcaze https://raw.github.com/sgtcaze/NametagEdit/master/src/main/java/ca/wacos/nametagedit/Packet209Mod.java
*/
package ca.wacos.nametagedit;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
import org.bukkit.entity.Player;
import java.lang.reflect.Method;
import java.lang.reflect.Field;
/**
* A small wrapper for the Packet209SetScoreboardTeam packet.
*/
class Packet209Mod {
Object packet;
private static Method getHandle;
private static Method sendPacket;
private static Field playerConnection;
private static Class<?> packetType;
static {
try {
packetType = Class.forName(getPacketTeamClasspath());
Class<?> typeCraftPlayer = Class.forName(getCraftPlayerClasspath());
Class<?> typeNMSPlayer = Class.forName(getNMSPlayerClasspath());
Class<?> typePlayerConnection = Class
.forName(getPlayerConnectionClasspath());
getHandle = typeCraftPlayer.getMethod("getHandle");
playerConnection = typeNMSPlayer.getField("playerConnection");
sendPacket = typePlayerConnection.getMethod("sendPacket",
Class.forName(getPacketClasspath()));
} catch (Exception e) {
System.out.println("Failed to setup reflection for Packet209Mod!");
e.printStackTrace();
}
}
@SuppressWarnings("rawtypes")
Packet209Mod(String name, String prefix, String suffix, Collection players,
int paramInt) throws ClassNotFoundException,
IllegalAccessException, InstantiationException,
NoSuchMethodException, NoSuchFieldException,
InvocationTargetException {
packet = packetType.newInstance();
setField("a", name);
setField("f", paramInt);
if ((paramInt == 0) || (paramInt == 2)) {
setField("b", name);
setField("c", prefix);
setField("d", suffix);
setField("g", 1);
}
if (paramInt == 0)
addAll(players);
}
@SuppressWarnings("rawtypes")
Packet209Mod(String name, Collection players, int paramInt)
throws ClassNotFoundException, IllegalAccessException,
InstantiationException, NoSuchMethodException,
NoSuchFieldException, InvocationTargetException {
packet = packetType.newInstance();
if ((paramInt != 3) && (paramInt != 4))
throw new IllegalArgumentException(
"Method must be join or leave for player constructor");
if ((players == null) || (players.isEmpty()))
players = new ArrayList<String>();
setField("a", name);
setField("f", paramInt);
addAll(players);
}
void sendToPlayer(Player bukkitPlayer) throws ClassNotFoundException,
IllegalAccessException, InstantiationException,
InvocationTargetException, NoSuchMethodException,
NoSuchFieldException {
Object player = getHandle.invoke(bukkitPlayer);
Object connection = playerConnection.get(player);
sendPacket.invoke(connection, packet);
}
private void setField(String field, Object value)
throws NoSuchFieldException, IllegalAccessException {
Field f = packet.getClass().getDeclaredField(field);
f.setAccessible(true);
f.set(packet, value);
}
@SuppressWarnings({ "unchecked", "rawtypes" })
private void addAll(Collection<?> col) throws NoSuchFieldException,
IllegalAccessException {
Field f = packet.getClass().getDeclaredField("e");
f.setAccessible(true);
((Collection) f.get(packet)).addAll(col);
}
private static String getCraftPlayerClasspath() {
return "org.bukkit.craftbukkit." + PackageChecker.getVersion()
+ ".entity.CraftPlayer";
}
private static String getPlayerConnectionClasspath() {
return "net.minecraft.server." + PackageChecker.getVersion()
+ ".PlayerConnection";
}
private static String getNMSPlayerClasspath() {
return "net.minecraft.server." + PackageChecker.getVersion()
+ ".EntityPlayer";
}
private static String getPacketClasspath() {
return "net.minecraft.server." + PackageChecker.getVersion()
+ ".Packet";
}
private static String getPacketTeamClasspath() {
return "net.minecraft.server." + PackageChecker.getVersion()
+ ".PacketPlayOutScoreboardTeam";
}
}