diff --git a/src/main/java/com/sakurarealm/playerrisk/PlayerRisk.java b/src/main/java/com/sakurarealm/playerrisk/PlayerRisk.java
index d381de2..e11d1fe 100644
--- a/src/main/java/com/sakurarealm/playerrisk/PlayerRisk.java
+++ b/src/main/java/com/sakurarealm/playerrisk/PlayerRisk.java
@@ -1,21 +1,34 @@
 package com.sakurarealm.playerrisk;
 
+import com.palmergames.bukkit.towny.event.PlayerEnterTownEvent;
+import com.palmergames.bukkit.towny.event.PlayerLeaveTownEvent;
 import com.sakurarealm.playerrisk.api.PlayerRiskManager;
 import com.sakurarealm.playerrisk.api.PlayerRiskSettings;
+import org.apache.commons.lang.NotImplementedException;
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
 import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.entity.PlayerDeathEvent;
 import org.bukkit.plugin.java.JavaPlugin;
 
-public final class PlayerRisk extends JavaPlugin {
+import java.util.*;
 
+public final class PlayerRisk extends JavaPlugin implements Listener {
+
+    //用来记录在城镇之外的玩家
+    Map<String,Integer> playsOutTown = new Hashtable<>();
     PlayerRiskManager playerRiskManager = null;
 
-    public PlayerRiskManager getPlayerRiskManager() {
-        if (playerRiskManager == null) {
-            throw new NullPointerException("PlayerRisk plugin is not initialized.");
-        }
-        return playerRiskManager;
-    }
+//    public PlayerRiskManager getPlayerRiskManager() {
+//        if (playerRiskManager == null) {
+//            throw new NullPointerException("PlayerRisk plugin is not initialized.");
+//        }
+//        return playerRiskManager;
+//    }
 
     public void load() {
         saveDefaultConfig();
@@ -29,6 +42,10 @@ public final class PlayerRisk extends JavaPlugin {
         // Plugin startup logic
         load();
         getCommand("playerrisk").setExecutor(new CommandHandler(this));
+        //注册监听器
+        Bukkit.getPluginManager().registerEvents(this,this);
+
+        getServer().getScheduler().scheduleSyncRepeatingTask(this, this::addRiskToOutTownPlayers, 0, 1200);
     }
 
     @Override
@@ -36,4 +53,58 @@ public final class PlayerRisk extends JavaPlugin {
         // Plugin shutdown logic
     }
 
+
+    /**
+     * TODO: 当玩家进入城镇时, 危险度不再增加.
+     *
+     * @param event The PlayerEnterTownEvent.
+     */
+    @EventHandler
+    public void onPlayerEnterTown(PlayerEnterTownEvent event) {
+        //当玩家进入城镇后，移出map集合并且清零
+        Player player = event.getPlayer();
+        playsOutTown.remove(player.getName());
+        throw new NotImplementedException("Not implemented yet.");
+    }
+
+    /**
+     * TODO: 当玩家离开城镇时, 危险度开始增加.
+     *
+     * @param event The PlayerLeaveTownEvent.
+     */
+    @EventHandler
+    public void onPlayerLeaveTown(PlayerLeaveTownEvent event) {
+        //当玩家离开城镇后,移出map集合并且清零
+        Player player = event.getPlayer();
+        playsOutTown.put(player.getName(),0);
+
+        throw new NotImplementedException("Not implemented yet.");
+    }
+
+    /**
+     * TODO: 当玩家死亡时, 危险度重置.
+     *
+     * @param event The PlayerDeathEvent.
+     */
+    @EventHandler
+    public void onPlayerDeath(PlayerDeathEvent event) {
+        Player player = event.getEntity();
+        playsOutTown.remove(player.getName());
+        throw new NotImplementedException("Not implemented yet.");
+    }
+    // TODO: Add any other event handlers needed to manage player risk.
+
+    //注册主任务,一直循环给增加在城镇之外的玩家的危险度
+    public void addRiskToOutTownPlayers(){
+        for (String name : playsOutTown.keySet()){
+            //获取玩家当前的危险度
+            int playerRiskLevel = playerRiskManager.getPlayerRiskLevel(name);
+            //日志报告，测试用
+            getLogger().info(ChatColor.GREEN+name+"危险度为:"+playerRiskLevel);
+            //注意此处是把所有生物群系的危险度放在一起计算了,
+            if (playerRiskLevel < playerRiskManager.settings.getLevelMax()){
+                playerRiskManager.setPlayerRiskLevel(name,playerRiskLevel + 1);
+            }
+        }
+    }
 }