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127 changes: 127 additions & 0 deletions
127
src/main/java/de/luuuuuis/privateserver/spigot/events/NPCListener.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| package de.luuuuuis.privateserver.spigot.events; | ||
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| import de.luuuuuis.privateserver.spigot.PrivateServer; | ||
| import de.luuuuuis.privateserver.spigot.util.reflections.NMSUtils; | ||
| import de.luuuuuis.privateserver.spigot.util.reflections.Reflections; | ||
| import net.jitse.npclib.api.NPC; | ||
| import net.jitse.npclib.api.events.NPCInteractEvent; | ||
| import net.jitse.npclib.api.skin.Skin; | ||
| import net.jitse.npclib.internal.NPCBase; | ||
| import net.minecraft.server.v1_8_R3.PacketPlayOutEntity; | ||
| import org.bukkit.Location; | ||
| import org.bukkit.entity.Player; | ||
| import org.bukkit.event.EventHandler; | ||
| import org.bukkit.event.Listener; | ||
| import org.bukkit.event.player.PlayerJoinEvent; | ||
| import org.bukkit.event.player.PlayerQuitEvent; | ||
| import org.bukkit.scheduler.BukkitRunnable; | ||
| import org.bukkit.util.NumberConversions; | ||
| import org.bukkit.util.Vector; | ||
|
|
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| import java.lang.reflect.InvocationTargetException; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Objects; | ||
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| public class NPCListener implements Listener { | ||
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| private final PrivateServer privateServer; | ||
| private final Map<Player, NPC> npcs = new HashMap<>(); | ||
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| public NPCListener(PrivateServer privateServer) { | ||
| this.privateServer = privateServer; | ||
| } | ||
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| @EventHandler | ||
| public void onJoin(PlayerJoinEvent e) { | ||
| Player p = e.getPlayer(); | ||
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| Location location = new Location(p.getWorld(), p.getLocation().getX(), p.getLocation().getY(), p.getLocation().getZ()); | ||
| NPC npc = privateServer.getNpcLib().createNPC(Collections.singletonList("§aPrivate Server")); | ||
| npc.setLocation(location); | ||
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| Objects.requireNonNull(NMSUtils.getProfile(p)).getProperties().get("textures").stream() | ||
| .findFirst().ifPresent(playerProperty -> npc.setSkin(new Skin(playerProperty.getValue(), playerProperty.getSignature()))); | ||
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| npc.create(); | ||
| npc.show(p); | ||
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| npcs.put(p, npc); | ||
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| // Sets head rotation for the npc if the player is in a range of 15 blocks | ||
| // Author: @yanjulang | ||
| new BukkitRunnable() { | ||
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| @Override | ||
| public void run() { | ||
| if (!p.isOnline()) { | ||
| cancel(); | ||
| return; | ||
| } | ||
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| if (npc.getLocation().getWorld() == p.getWorld() && p.getLocation().distance(npc.getLocation()) < 15) { | ||
| Vector look = p.getLocation().toVector().add(new Vector(0, 1, 0)).subtract(npc.getLocation().toVector().add(new Vector(0, 1.54, 0))); | ||
| float[] rots = vecToRots(look); | ||
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| if (rots[0] > 180) { | ||
| rots[0] -= 360; | ||
| } | ||
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| Object packet = null; | ||
| try { | ||
| packet = Objects.requireNonNull(NMSUtils.getNMSClass("PacketPlayOutEntityHeadRotation")).getConstructor().newInstance(); | ||
| } catch (InstantiationException | IllegalAccessException | NoSuchMethodException | InvocationTargetException instantiationException) { | ||
| instantiationException.printStackTrace(); | ||
| } | ||
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| Reflections.setValue(packet, "a", ((NPCBase) npc).getEntityId()); | ||
| Reflections.setValue(packet, "b", toAngle(rots[0])); | ||
| NMSUtils.sendPacket(p, packet); | ||
| NMSUtils.sendPacket(p, new PacketPlayOutEntity.PacketPlayOutEntityLook(((NPCBase) npc).getEntityId(), toAngle(rots[0]), toAngle(rots[1]), true)); | ||
| } | ||
| } | ||
|
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| private float[] vecToRots(Vector vector) { | ||
| double x = vector.getX(); | ||
| double z = vector.getZ(); | ||
| if (x == 0.0D && z == 0.0D) { | ||
| return new float[]{0f, (float) (vector.getY() > 0.0D ? -90 : 90)}; | ||
| } else { | ||
| double theta = Math.atan2(-x, z); | ||
| float yaw = (float) Math.toDegrees((theta + 6.283185307179586D) % 6.283185307179586D); | ||
| double x2 = NumberConversions.square(x); | ||
| double z2 = NumberConversions.square(z); | ||
| double xz = Math.sqrt(x2 + z2); | ||
| float pitch = (float) Math.toDegrees(Math.atan(-vector.getY() / xz)); | ||
| return new float[]{yaw, pitch}; | ||
| } | ||
| } | ||
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| public byte toAngle(float value) { | ||
| return (byte) ((int) (value * 256.0F / 360.0F)); | ||
| } | ||
| }.runTaskTimerAsynchronously(privateServer, 0, 2); | ||
|
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| } | ||
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| @EventHandler | ||
| public void onQuit(PlayerQuitEvent e) { | ||
| Player p = e.getPlayer(); | ||
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| NPC npc = npcs.get(p); | ||
| npc.destroy(); | ||
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| npcs.remove(p); | ||
| } | ||
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| @EventHandler | ||
| public void onInteract(NPCInteractEvent e) { | ||
| NPC npc = npcs.get(e.getWhoClicked()); | ||
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| if (e.getNPC().equals(npc)) { | ||
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| } | ||
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| } | ||
| } |
102 changes: 102 additions & 0 deletions
102
src/main/java/de/luuuuuis/privateserver/spigot/util/reflections/NMSUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| package de.luuuuuis.privateserver.spigot.util.reflections; | ||
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| import com.mojang.authlib.GameProfile; | ||
| import org.bukkit.Bukkit; | ||
| import org.bukkit.entity.Player; | ||
|
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| import java.lang.reflect.InvocationTargetException; | ||
| import java.util.Objects; | ||
|
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| public class NMSUtils { | ||
|
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| /** | ||
| * Send a packet to a player without using direct nms imports | ||
| * | ||
| * @param player to send the packet to | ||
| * @param packet to send | ||
| */ | ||
| public static void sendPacket(Player player, Object packet) { | ||
| try { | ||
| Object handle = player.getClass().getMethod("getHandle").invoke(player); | ||
| Object connection = handle.getClass().getField("playerConnection").get(handle); | ||
| connection.getClass().getMethod("sendPacket", getNMSClass("Packet")).invoke(connection, packet); | ||
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException | NoSuchMethodException | ||
| | SecurityException | NoSuchFieldException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Get an NMS Class by its Name | ||
| * Class Path: Net.Ninecraft.Server.<VersionString>.ClassName | ||
| * | ||
| * @param name of the Class | ||
| * @return Class | ||
| */ | ||
| public static Class<?> getNMSClass(String name) { | ||
| String version = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3]; | ||
| try { | ||
| return Class.forName("net.minecraft.server." + version + "." + name); | ||
| } catch (ClassNotFoundException e) { | ||
| e.printStackTrace(); | ||
| return null; | ||
| } | ||
| } | ||
|
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| /** | ||
| * Get an CraftBukkit Class by its Name | ||
| * Class Path: org.bukkit.craftbukkit.<VersionString>.ClassName | ||
| * | ||
| * @param name of the Class | ||
| * @return Class | ||
| */ | ||
| public static Class<?> getCraftBukkitClass(String name) { | ||
| String version = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3]; | ||
| try { | ||
| return Class.forName("org.bukkit.craftbukkit." + version + "." + name); | ||
| } catch (ClassNotFoundException e) { | ||
| e.printStackTrace(); | ||
| return null; | ||
| } | ||
| } | ||
|
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| /** | ||
| * Get the NMS Version String from Bukkit.getServer() - package | ||
| * | ||
| * @return String | ||
| */ | ||
| public static String getVersion() { | ||
| return Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3]; | ||
| } | ||
|
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| /** | ||
| * Get the {@link GameProfile} from a player | ||
| * | ||
| * @param player to get the GameProfile from | ||
| * @return GameProfile | ||
| */ | ||
| public static GameProfile getProfile(Player player) { | ||
| try { | ||
| return (GameProfile) Objects.requireNonNull(NMSUtils.getHandle(player)).getClass().getMethod("getProfile").invoke(NMSUtils.getHandle(player)); | ||
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException | NoSuchMethodException | ||
| | SecurityException e) { | ||
| e.printStackTrace(); | ||
| return null; | ||
| } | ||
| } | ||
|
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| /** | ||
| * Get an NMS - EntityPlayer - Object by a org.bukkit.Player - Object | ||
| * | ||
| * @param player (Bukkit Player) | ||
| * @return NMS EntityPlayer Object | ||
| */ | ||
| public static Object getHandle(Player player) { | ||
| try { | ||
| return player.getClass().getMethod("getHandle").invoke(player); | ||
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException | NoSuchMethodException | ||
| | SecurityException e) { | ||
| return null; | ||
| } | ||
| } | ||
| } |
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