Bukkit Vault 排行榜插件：使用 Java 和 HashMap<String, Integer> 实现

以下是一个使用 Java 编写的基于 Vault 的排行榜插件示例：\n\njava\nimport org.bukkit.Bukkit;\nimport org.bukkit.OfflinePlayer;\nimport org.bukkit.entity.Player;\nimport org.bukkit.plugin.RegisteredServiceProvider;\nimport org.bukkit.plugin.java.JavaPlugin;\n\nimport net.milkbowl.vault.economy.Economy;\nimport net.milkbowl.vault.economy.EconomyResponse;\n\nimport java.util.HashMap;\nimport java.util.Map;\nimport java.util.UUID;\n\npublic class LeaderboardPlugin extends JavaPlugin {\n private Economy economy;\n private Map<UUID, Integer> leaderboard;\n\n @Override\n public void onEnable() {\n if (!setupEconomy()) {\n getLogger().severe("Vault not found! Disabling plugin...");\n getServer().getPluginManager().disablePlugin(this);\n return;\n }\n\n leaderboard = new HashMap<>();\n\n // 注册事件监听器\n getServer().getPluginManager().registerEvents(new PlayerJoinListener(), this);\n\n // 命令注册\n getCommand("leaderboard").setExecutor(new LeaderboardCommand());\n }\n\n private boolean setupEconomy() {\n if (getServer().getPluginManager().getPlugin("Vault") == null) {\n return false;\n }\n\n RegisteredServiceProvider<Economy> rsp = getServer().getServicesManager().getRegistration(Economy.class);\n if (rsp == null) {\n return false;\n }\n\n economy = rsp.getProvider();\n return economy != null;\n }\n\n private class PlayerJoinListener implements org.bukkit.event.Listener {\n @org.bukkit.event.EventHandler\n public void onPlayerJoin(org.bukkit.event.player.PlayerJoinEvent event) {\n Player player = event.getPlayer();\n UUID uuid = player.getUniqueId();\n\n if (!leaderboard.containsKey(uuid)) {\n leaderboard.put(uuid, 0);\n }\n }\n }\n\n private class LeaderboardCommand implements org.bukkit.command.CommandExecutor {\n @Override\n public boolean onCommand(org.bukkit.command.CommandSender sender, org.bukkit.command.Command command, String label, String[] args) {\n if (!(sender instanceof Player)) {\n sender.sendMessage("Only players can execute this command.");\n return true;\n }\n\n Player player = (Player) sender;\n\n if (args.length > 0 && args[0].equalsIgnoreCase("top")) {\n player.sendMessage("Leaderboard:");\n\n int count = 0;\n for (Map.Entry<UUID, Integer> entry : leaderboard.entrySet()) {\n OfflinePlayer offlinePlayer = Bukkit.getOfflinePlayer(entry.getKey());\n String playerName = offlinePlayer.getName();\n int playerScore = entry.getValue();\n\n player.sendMessage((count + 1) + ". " + playerName + ": " + playerScore);\n \n count++;\n if (count >= 10) {\n break;\n }\n }\n } else {\n player.sendMessage("Your score: " + leaderboard.get(player.getUniqueId()));\n }\n\n return true;\n }\n }\n\n public void addScore(Player player, int score) {\n UUID uuid = player.getUniqueId();\n\n if (leaderboard.containsKey(uuid)) {\n int currentScore = leaderboard.get(uuid);\n leaderboard.put(uuid, currentScore + score);\n } else {\n leaderboard.put(uuid, score);\n }\n }\n\n public void removeScore(Player player, int score) {\n UUID uuid = player.getUniqueId();\n\n if (leaderboard.containsKey(uuid)) {\n int currentScore = leaderboard.get(uuid);\n leaderboard.put(uuid, currentScore - score);\n }\n }\n\n public boolean transferMoney(Player sender, Player receiver, double amount) {\n EconomyResponse response = economy.withdrawPlayer(sender, amount);\n if (!response.transactionSuccess()) {\n return false;\n }\n\n economy.depositPlayer(receiver, amount);\n return true;\n }\n}\n\n\n这是一个简单的排行榜插件示例，使用了 Vault 插件进行经济交易。在插件中，玩家的分数存储在一个 HashMap<UUID, Integer> 的 leaderboard 中。插件提供了两个命令：/leaderboard 和 /leaderboard top。/leaderboard 命令将显示玩家自己的分数，/leaderboard top 命令将显示排行榜中分数最高的 10 个玩家。\n\n插件还提供了 addScore 和 removeScore 方法来增加或减少玩家的分数，以及 transferMoney 方法来在玩家之间进行经济交易。\n\n请注意，此示例假设您已经安装了 Vault 插件，并且已经正确配置了经济插件。在使用之前，请确保将 Vault 和适当的经济插件添加到您的服务器中。