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package com.example.loginsecurity.loginSec; import org.bukkit.ChatColor; import org.bukkit.entity.Player; import org.bukkit.command.Command; import org.bukkit.command.CommandExecutor; import org.bukkit.command.CommandSender; public class LoginSec implements CommandExecutor { private final Main plugin; public LoginSec(Main plugin) { this.plugin = plugin; } @Override public boolean onCommand(CommandSender sender, Command command, String label, String[] args) { if (!(sender instanceof Player)) { sender.sendMessage("Only players can use this command."); return true; } Player player = (Player) sender; if (args.length != 2) { player.sendMessage(ChatColor. RED + "Usage: /register <password> <confirmPassword>"); return true; } String password = args[0]; String confirmPassword = args[1]; if (!password.equals(confirmPassword)) { player.sendMessage(ChatColor. RED + "Passwords do not match!"); return true; } // Save password to config String playerUUID = player.getUniqueId().toString(); if (plugin.getPasswordsConfig().contains(playerUUID)) { player.sendMessage(ChatColor. RED + "You are already registered."); } else { plugin.getPasswordsConfig().set(playerUUID, password); plugin.savePasswordsConfig(); player.sendMessage(ChatColor. GREEN + "You have successfully registered! Please log in with /login <password>."); } return true; } } ^
LoginSec.java
v
package com.example.loginsecurity.loginSec; import org.bukkit.ChatColor; import org.bukkit.GameMode; import org.bukkit.command.Command; import org.bukkit.command.CommandExecutor; import org.bukkit.command.CommandSender; import org.bukkit.entity.Player; import org.bukkit.potion.PotionEffectType; import java.util.UUID; public class LoginCommand implements CommandExecutor { private final Main plugin; public LoginCommand(Main plugin) { this.plugin = plugin; } @Override public boolean onCommand(CommandSender sender, Command command, String label, String[] args) { if (!(sender instanceof Player)) { sender.sendMessage("Only players can use this command."); return true; } Player player = (Player) sender; UUID playerUUID = player.getUniqueId(); if (args.length != 1) { player.sendMessage(ChatColor. RED + "Usage: /login <password>"); return true; } String password = args[0]; String storedPassword = plugin.getPasswordsConfig().getString(playerUUID.toString()); if (storedPassword == null) { player.sendMessage(ChatColor. RED + "You are not registered! Please register with /register <password> <confirmPassword>"); return true; } if (storedPassword.equals(password)) { plugin.getLoggedInPlayers().put(playerUUID, true); player.removePotionEffect(PotionEffectType. BLINDNESS ); player.setGameMode(GameMode. SURVIVAL ); player.sendMessage(ChatColor. GREEN + "You have successfully logged in!"); } else { player.sendMessage(ChatColor. RED + "Incorrect password!"); } return true; } } Logincommand.java
v
package com.example.loginsecurity.loginSec; import org.bukkit.Bukkit; import org.bukkit.ChatColor; import org.bukkit.GameMode; import org.bukkit.Location; import org.bukkit.configuration.file.FileConfiguration; import org.bukkit.configuration.file.YamlConfiguration; 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.PlayerMoveEvent; import org.bukkit.event.player.PlayerQuitEvent; import org.bukkit.plugin.java.JavaPlugin; import org.bukkit.potion.PotionEffect; import org.bukkit.potion.PotionEffectType; import org.bukkit.scheduler.BukkitRunnable; import java.io.File; import java.io.IOException; import java.util.HashMap; import java.util.UUID; public class Main extends JavaPlugin implements Listener { private File passwordsFile; private FileConfiguration passwordsConfig; private HashMap<UUID, Boolean> loggedInPlayers = new HashMap<>(); private HashMap<UUID, BukkitRunnable> loginTasks = new HashMap<>(); @Override public void onEnable() { // Load or create the passwords.yml file passwordsFile = new File(getDataFolder(), "passwords.yml"); if (!passwordsFile.exists()) { passwordsFile.getParentFile().mkdirs(); saveResource("passwords.yml", false); } passwordsConfig = YamlConfiguration. loadConfiguration (passwordsFile); // Register the plugin event listener Bukkit. getPluginManager ().registerEvents(this, this); // Register commands this.getCommand("register").setExecutor(new LoginSec(this)); this.getCommand("login").setExecutor(new LoginCommand(this)); } @Override public void onDisable() { // Save password data on plugin disable try { passwordsConfig.save(passwordsFile); } catch (IOException e) { e.printStackTrace(); } } public FileConfiguration getPasswordsConfig() { return passwordsConfig; } public void savePasswordsConfig() { try { passwordsConfig.save(passwordsFile); } catch (IOException e) { e.printStackTrace(); } } @EventHandler public void onPlayerJoin(PlayerJoinEvent event) { Player player = event.getPlayer(); UUID playerUUID = player.getUniqueId(); if (!passwordsConfig.contains(playerUUID.toString())) { player.sendMessage(ChatColor. RED + "You need to register with /register <password> <confirmPassword>"); } else { player.sendMessage(ChatColor. YELLOW + "Please login with /login <password>"); } // Apply blindness and prevent movement until login player.addPotionEffect(new PotionEffect(PotionEffectType. BLINDNESS , Integer. MAX_VALUE , 1, true, false, false)); player.setGameMode(GameMode. ADVENTURE ); // Start a 60-second timer to kick if not logged in BukkitRunnable loginTask = new BukkitRunnable() { @Override public void run() { if (!loggedInPlayers.getOrDefault(playerUUID, false)) { player.kickPlayer(ChatColor. RED + "You did not log in within 60 seconds."); } } }; loginTask.runTaskLater(this, 60 * 20); // 60 seconds loginTasks.put(playerUUID, loginTask); } @EventHandler public void onPlayerMove(PlayerMoveEvent event) { Player player = event.getPlayer(); if (!loggedInPlayers.getOrDefault(player.getUniqueId(), false)) { Location from = event.getFrom(); Location to = event.getTo(); // Prevent movement if (from.getX() != to.getX() || from.getY() != to.getY() || from.getZ() != to.getZ()) { player.teleport(from); } } } @EventHandler public void onPlayerQuit(PlayerQuitEvent event) { UUID playerUUID = event.getPlayer().getUniqueId(); if (loginTasks.containsKey(playerUUID)) { loginTasks.get(playerUUID).cancel(); loginTasks.remove(playerUUID); } loggedInPlayers.remove(playerUUID); } public HashMap<UUID, Boolean> getLoggedInPlayers() { return loggedInPlayers; } } ERROR IS THis
[16:30:15 ERROR]: [ModernPluginLoadingStrategy] Could not load plugin 'loginsec-1.0-SNAPSHOT.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: Cannot find main class `com.example.loginsecurity.loginSec'
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:80) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
at io.papermc.paper.plugin.provider.type.spigot.SpigotPluginProvider.createInstance(SpigotPluginProvider.java:123) ~[paper-1.20.4.jar:git-Paper-497]
at io.papermc.paper.plugin.provider.type.spigot.SpigotPluginProvider.createInstance(SpigotPluginProvider.java:35) ~[paper-1.20.4.jar:git-Paper-497]
at io.papermc.paper.plugin.entrypoint.strategy.modern.ModernPluginLoadingStrategy.loadProviders(ModernPluginLoadingStrategy.java:116) ~[paper-1.20.4.jar:git-Paper-497]
at io.papermc.paper.plugin.storage.SimpleProviderStorage.enter(SimpleProviderStorage.java:38) ~[paper-1.20.4.jar:git-Paper-497]
at io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler.enter(LaunchEntryPointHandler.java:36) ~[paper-1.20.4.jar:git-Paper-497]
at org.bukkit.craftbukkit.v1_20_R3.CraftServer.loadPlugins(CraftServer.java:507) ~[paper-1.20.4.jar:git-Paper-497]
at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:274) ~[paper-1.20.4.jar:git-Paper-497]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1131) ~[paper-1.20.4.jar:git-Paper-497]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:319) ~[paper-1.20.4.jar:git-Paper-497]
at java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.ClassNotFoundException: com.example.loginsecurity.loginSec
at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:197) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:164) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?]
at java.lang.Class.forName0(Native Method) ~[?:?]
at java.lang.Class.forName(Class.java:534) ~[?:?]
at java.lang.Class.forName(Class.java:513) ~[?:?]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:78) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
... 10 more
submitted by /u/Ill_Team4762
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