Modernize command system

src/main/java/emu/lunarcore/LunarRail.java

@@ -8,7 +8,7 @@ import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 
 import ch.qos.logback.classic.Logger;
-import emu.lunarcore.commands.ServerCommands;
+import emu.lunarcore.command.CommandManager;
 import emu.lunarcore.data.ResourceLoader;
 import emu.lunarcore.database.DatabaseManager;
 import emu.lunarcore.server.game.GameServer;
@@ -28,6 +28,8 @@ public class LunarRail {
     @Getter private static HttpServer httpServer;
     @Getter private static GameServer gameServer;
 
+    @Getter private static CommandManager commandManager;
+    
     private static ServerType serverType = ServerType.BOTH;
 
     // Load config first before doing anything
@@ -38,6 +40,9 @@ public class LunarRail {
     public static void main(String[] args) {
         // Start Server
         LunarRail.getLogger().info("Starting Lunar Rail...");
+        
+        // Load commands
+        LunarRail.commandManager = new CommandManager();
 
         // Parse arguments
         for (String arg : args) {
@@ -58,7 +63,7 @@ public class LunarRail {
                 return;
             }
         }
-
+        
         // Load resources
         ResourceLoader.loadAll();
 
@@ -127,7 +132,7 @@ public class LunarRail {
         String input;
         try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {
             while ((input = br.readLine()) != null) {
-                ServerCommands.handle(input);
+                LunarRail.getCommandManager().invoke(null, input);
             }
         } catch (Exception e) {
             LunarRail.getLogger().error("Console error:", e);

src/main/java/emu/lunarcore/command/Command.java

@@ -1,13 +1,13 @@
-package emu.lunarcore.commands;
+package emu.lunarcore.command;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 
 @Retention(RetentionPolicy.RUNTIME)
 public @interface Command {
+    public String label() default "";
+    
     public String[] aliases() default "";
 
-    public int gmLevel() default 1;
-
     public String desc() default "";
 }

src/main/java/emu/lunarcore/command/CommandArgs.java

@@ -0,0 +1,80 @@
+package emu.lunarcore.command;
+
+import java.util.List;
+
+import emu.lunarcore.LunarRail;
+import emu.lunarcore.game.player.Player;
+import emu.lunarcore.util.Utils;
+import lombok.Getter;
+
+@Getter
+public class CommandArgs {
+    private List<String> list;
+    private Player target;
+    
+    private int targetUid;
+    private int level;
+    private int count;
+    private int rank;
+    private int promotion;
+    
+    private static String EMPTY_STRING = "";
+
+    public CommandArgs(Player sender, List<String> args) {
+        this.list = args;
+        
+        // Parse args. Maybe regex is better.
+        var it = this.list.iterator();
+        while (it.hasNext()) {
+            // Lower case first
+            String arg = it.next().toLowerCase();
+            
+            try {
+                if (arg.length() >= 2 && !Character.isDigit(arg.charAt(0)) && Character.isDigit(arg.charAt(arg.length() - 1))) {
+                    if (arg.startsWith("@")) {
+                        this.targetUid = Utils.parseSafeInt(arg.substring(1));
+                        it.remove();
+                    } else if (arg.startsWith("x")) {
+                        this.count = Utils.parseSafeInt(arg.substring(1));
+                        it.remove();
+                    } else if (arg.startsWith("lv")) {
+                        this.level = Utils.parseSafeInt(arg.substring(2));
+                        it.remove();
+                    } else if (arg.startsWith("r")) {
+                        this.rank = Utils.parseSafeInt(arg.substring(1));
+                        it.remove();
+                    } else if (arg.startsWith("p")) {
+                        this.promotion = Utils.parseSafeInt(arg.substring(1));
+                        it.remove();
+                    }
+                }
+            } catch (Exception e) {
+                
+            }
+        }
+        
+        // Get target player
+        if (targetUid != 0) {
+            if (LunarRail.getGameServer() != null) {
+                target = LunarRail.getGameServer().getOnlinePlayerByUid(targetUid);
+            }
+        } else {
+            target = sender;
+        }
+        
+        if (target != null) {
+            this.targetUid = target.getUid();
+        }
+    }
+    
+    public int size() {
+        return this.list.size();
+    }
+    
+    public String get(int index) {
+        if (index < 0 || index >= list.size()) {
+            return EMPTY_STRING;
+        }
+        return this.list.get(index);
+    }
+}

src/main/java/emu/lunarcore/command/CommandHandler.java

@@ -0,0 +1,22 @@
+package emu.lunarcore.command;
+
+import emu.lunarcore.LunarRail;
+import emu.lunarcore.game.player.Player;
+
+public interface CommandHandler {
+    
+    public default String getLabel() {
+        return this.getClass().getAnnotation(Command.class).label();
+    }
+    
+    public default void sendMessage(Player player, String message) {
+        if (player != null) {
+            player.sendMessage(message);
+        } else {
+            LunarRail.getLogger().info(message);
+        }
+    }
+    
+    public void execute(Player sender, CommandArgs args);
+    
+}

src/main/java/emu/lunarcore/command/CommandManager.java

@@ -0,0 +1,102 @@
+package emu.lunarcore.command;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.reflections.Reflections;
+
+import emu.lunarcore.LunarRail;
+import emu.lunarcore.game.player.Player;
+import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
+import lombok.AccessLevel;
+import lombok.Getter;
+
+@Getter(AccessLevel.PRIVATE)
+public class CommandManager {
+    private Object2ObjectMap<String, CommandHandler> labels;
+    private Object2ObjectMap<String, CommandHandler> commands;
+    
+    public CommandManager() {
+        this.labels = new Object2ObjectOpenHashMap<>();
+        this.commands = new Object2ObjectOpenHashMap<>();
+        
+        // Scan for commands
+        var commandClasses = new Reflections(CommandManager.class.getPackageName()).getTypesAnnotatedWith(Command.class);
+        
+        for (var cls : commandClasses) {
+            if (!CommandHandler.class.isAssignableFrom(cls)) {
+                continue;
+            }
+            
+            try {
+                CommandHandler handler = (CommandHandler) cls.getDeclaredConstructor().newInstance();
+                this.registerCommand(handler);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+    
+    public CommandManager registerCommand(CommandHandler handler) {
+        Command command = handler.getClass().getAnnotation(Command.class);
+        if (command == null) {
+            return this;
+        }
+        
+        this.getLabels().put(command.label(), handler);
+        this.getCommands().put(command.label(), handler);
+        
+        for (String alias : command.aliases()) {
+            this.getCommands().put(alias, handler);
+        }
+        
+        return this;
+    }
+    
+    public CommandManager unregisterCommand(String label) {
+        CommandHandler handler = this.getLabels().get(label);
+        if (handler == null) {
+            return this;
+        }
+        
+        Command command = handler.getClass().getAnnotation(Command.class);
+        if (command == null) {
+            return this;
+        }
+        
+        this.getLabels().remove(command.label());
+        this.getCommands().remove(command.label());
+        
+        for (String alias : command.aliases()) {
+            this.getCommands().remove(alias);
+        }
+        
+        return this;
+    }
+    
+    public void invoke(Player sender, String message) {
+        List<String> args = Arrays.stream(message.split(" ")).collect(Collectors.toCollection(ArrayList::new));
+        
+        // Get command label
+        String label = args.remove(0).toLowerCase();
+        
+        if (label.startsWith("/") || label.startsWith("!")) {
+            label = label.substring(1);
+        }
+        
+        // Get handler
+        CommandHandler handler = this.commands.get(label);
+        if (handler != null) {
+            handler.execute(sender, new CommandArgs(sender, args));
+        } else {
+            if (sender != null) {
+                sender.sendMessage("Inavlid Command!");
+            } else {
+                LunarRail.getLogger().info("Inavlid Command!");
+            }
+        }
+    }
+}

src/main/java/emu/lunarcore/command/commands/AccountCommand.java

@@ -0,0 +1,48 @@
+package emu.lunarcore.command.commands;
+
+import emu.lunarcore.command.Command;
+import emu.lunarcore.command.CommandArgs;
+import emu.lunarcore.command.CommandHandler;
+import emu.lunarcore.game.account.AccountHelper;
+import emu.lunarcore.game.player.Player;
+import emu.lunarcore.util.Utils;
+
+@Command(label = "account")
+public class AccountCommand implements CommandHandler {
+
+    @Override
+    public void execute(Player sender, CommandArgs args) {
+        if (args.size() < 2) {
+            this.sendMessage(sender, "Invalid amount of args");
+            return;
+        }
+        
+        String command = args.get(0).toLowerCase();
+        String username = args.get(1);
+
+        switch (command) {
+            case "create" -> {
+                // Reserved player uid
+                int reservedUid = 0;
+                
+                if (args.size() >= 3) {
+                    reservedUid = Utils.parseSafeInt(args.get(2));
+                }
+    
+                if (AccountHelper.createAccount(username, null, reservedUid)) {
+                    this.sendMessage(sender, "Account created");
+                } else {
+                    this.sendMessage(sender, "Account already exists");
+                }
+            }
+            case "delete" -> {
+                if (AccountHelper.deleteAccount(username)) {
+                    this.sendMessage(sender, "Account deleted");
+                } else {
+                    this.sendMessage(sender, "Account doesnt exist");
+                }
+            }
+        }
+    }
+
+}

src/main/java/emu/lunarcore/command/commands/ClearCommand.java

@@ -0,0 +1,62 @@
+package emu.lunarcore.command.commands;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import emu.lunarcore.command.Command;
+import emu.lunarcore.command.CommandArgs;
+import emu.lunarcore.command.CommandHandler;
+import emu.lunarcore.game.inventory.GameItem;
+import emu.lunarcore.game.inventory.ItemMainType;
+import emu.lunarcore.game.player.Player;
+
+@Command(label = "clear")
+public class ClearCommand implements CommandHandler {
+
+    @Override
+    public void execute(Player sender, CommandArgs args) {
+        // Check target
+        if (args.getTarget() == null) {
+            this.sendMessage(sender, "Error: Targeted player not found or offline");
+            return;
+        }
+
+        List<GameItem> toRemove = new LinkedList<>();
+        String type = args.get(0).toLowerCase();
+        
+        switch (type) {
+            case "relics", "r" -> {
+                for (GameItem item : args.getTarget().getInventory().getItems().values()) {
+                    if (item.getItemMainType() == ItemMainType.Relic && item.getLevel() <= 1 && item.getExp() == 0 && !item.isLocked() && !item.isEquipped()) {
+                        toRemove.add(item);
+                    }
+                }
+            }
+            case "equipment", "lightcones", "lc" -> {
+                for (GameItem item : args.getTarget().getInventory().getItems().values()) {
+                    if (item.getItemMainType() == ItemMainType.Equipment && item.getLevel() <= 1 && item.getExp() == 0 && !item.isLocked() && !item.isEquipped()) {
+                        toRemove.add(item);
+                    }
+                }
+            }
+            case "materials", "mats", "m" -> {
+                for (GameItem item : args.getTarget().getInventory().getItems().values()) {
+                    if (item.getItemMainType() == ItemMainType.Material) {
+                        toRemove.add(item);
+                    }
+                }
+            }
+            case "items" -> {
+                for (GameItem item : args.getTarget().getInventory().getItems().values()) {
+                    if (!item.isLocked() && !item.isEquipped()) {
+                        toRemove.add(item);
+                    }
+                }
+            }
+        }
+        
+        args.getTarget().getInventory().removeItems(toRemove);
+        this.sendMessage(sender, "Removed " + toRemove.size() + " items");
+    }
+
+}

src/main/java/emu/lunarcore/command/commands/GiveAllCommand.java

@@ -0,0 +1,62 @@
+package emu.lunarcore.command.commands;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import emu.lunarcore.command.Command;
+import emu.lunarcore.command.CommandArgs;
+import emu.lunarcore.command.CommandHandler;
+import emu.lunarcore.data.GameData;
+import emu.lunarcore.data.excel.ItemExcel;
+import emu.lunarcore.game.inventory.GameItem;
+import emu.lunarcore.game.inventory.ItemMainType;
+import emu.lunarcore.game.inventory.ItemSubType;
+import emu.lunarcore.game.player.Player;
+
+@Command(label = "giveall", aliases = {"ga"})
+public class GiveAllCommand implements CommandHandler {
+
+    @Override
+    public void execute(Player sender, CommandArgs args) {
+        // Check target
+        if (args.getTarget() == null) {
+            this.sendMessage(sender, "Error: Targeted player not found or offline");
+            return;
+        }
+        
+        String type = args.get(0).toLowerCase();
+        
+        switch (type) {
+            case "materials", "mats" -> {
+                //
+                List<GameItem> items = new ArrayList<>();
+                // Character/Relic/Lightcone upgrade materials
+                for (ItemExcel excel : GameData.getItemExcelMap().values()) {
+                    int purpose = excel.getPurposeType();
+                    if (purpose >= 1 && purpose <= 7) {
+                        items.add(new GameItem(excel, 1000));
+                    }
+                }
+                // Credits
+                items.add(new GameItem(2, 50_000_000));
+                // Add
+                args.getTarget().getInventory().addItems(items);
+                // Send message
+                this.sendMessage(sender, "Giving " + args.getTarget().getName() + " " + items.size() + " items");
+            }
+            case "avatars" -> {
+                // All avatars and their eidolons
+                for (ItemExcel excel : GameData.getItemExcelMap().values()) {
+                    if (excel.getItemMainType() == ItemMainType.AvatarCard) {
+                        args.getTarget().getInventory().addItem(excel, 1);
+                    } else if (excel.getItemSubType() == ItemSubType.Eidolon) {
+                        args.getTarget().getInventory().addItem(excel, 6);
+                    }
+                }
+                // Send message
+                this.sendMessage(sender, "Giving " + args.getTarget().getName() + " all avatars");
+            }
+        }
+    }
+
+}

src/main/java/emu/lunarcore/command/commands/GiveCommand.java

@@ -0,0 +1,51 @@
+package emu.lunarcore.command.commands;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import emu.lunarcore.command.Command;
+import emu.lunarcore.command.CommandArgs;
+import emu.lunarcore.command.CommandHandler;
+import emu.lunarcore.data.GameData;
+import emu.lunarcore.data.excel.ItemExcel;
+import emu.lunarcore.game.inventory.GameItem;
+import emu.lunarcore.game.player.Player;
+import emu.lunarcore.util.Utils;
+
+@Command(label = "give", aliases = {"g"})
+public class GiveCommand implements CommandHandler {
+
+    @Override
+    public void execute(Player sender, CommandArgs args) {
+        // Check target
+        if (args.getTarget() == null) {
+            this.sendMessage(sender, "Error: Targeted player not found or offline");
+            return;
+        } else if (args.getCount() <= 0) {
+            this.sendMessage(sender, "Error: Amount must be higher than 0");
+            return;
+        }
+        
+        int itemId = Utils.parseSafeInt(args.get(0));
+        ItemExcel itemData = GameData.getItemExcelMap().get(itemId);
+        
+        if (itemData == null) {
+            this.sendMessage(sender, "Error: Item data not found");
+            return;
+        }
+        
+        if (itemData.isEquippable()) {
+            List<GameItem> items = new LinkedList<>();
+            for (int i = 0; i < args.getCount(); i++) {
+                items.add(new GameItem(itemData));
+            }
+            args.getTarget().getInventory().addItems(items);
+        } else {
+            GameItem item = new GameItem(itemData, args.getCount());
+            args.getTarget().getInventory().addItem(item);
+        }
+
+        args.getTarget().sendMessage("Giving " + args.getTarget().getName() + " " + args.getCount() + " of " + itemId);
+    }
+
+}

src/main/java/emu/lunarcore/command/commands/ReloadCommand.java

@@ -0,0 +1,18 @@
+package emu.lunarcore.command.commands;
+
+import emu.lunarcore.LunarRail;
+import emu.lunarcore.command.Command;
+import emu.lunarcore.command.CommandArgs;
+import emu.lunarcore.command.CommandHandler;
+import emu.lunarcore.game.player.Player;
+
+@Command(label = "reload")
+public class ReloadCommand implements CommandHandler {
+
+    @Override
+    public void execute(Player sender, CommandArgs args) {
+        LunarRail.loadConfig();
+        this.sendMessage(sender, "Reloaded the server config");
+    }
+
+}

src/main/java/emu/lunarcore/command/commands/WorldLevelCommand.java

@@ -0,0 +1,30 @@
+package emu.lunarcore.command.commands;
+
+import emu.lunarcore.command.Command;
+import emu.lunarcore.command.CommandArgs;
+import emu.lunarcore.command.CommandHandler;
+import emu.lunarcore.game.player.Player;
+import emu.lunarcore.util.Utils;
+
+@Command(label = "worldlevel", aliases = {"wl"})
+public class WorldLevelCommand implements CommandHandler {
+
+    @Override
+    public void execute(Player sender, CommandArgs args) {
+        // Check target
+        if (args.getTarget() == null) {
+            this.sendMessage(sender, "Error: Targeted player not found or offline");
+            return;
+        }
+        
+        // Set world level
+        int level = Utils.parseSafeInt(args.get(0));
+        level = Math.min(Math.max(level, 0), 6);
+        
+        args.getTarget().setWorldLevel(level);
+        
+        // Done
+        this.sendMessage(sender, "Set world level to " + level);
+    }
+
+}

src/main/java/emu/lunarcore/commands/PlayerCommands.java

@@ -1,249 +0,0 @@
-package emu.lunarcore.commands;
-
-import java.lang.reflect.Modifier;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.LinkedList;
-import java.util.List;
-
-import emu.lunarcore.data.GameData;
-import emu.lunarcore.data.excel.ItemExcel;
-import emu.lunarcore.data.excel.NpcMonsterExcel;
-import emu.lunarcore.data.excel.StageExcel;
-import emu.lunarcore.game.inventory.GameItem;
-import emu.lunarcore.game.inventory.ItemMainType;
-import emu.lunarcore.game.inventory.ItemSubType;
-import emu.lunarcore.game.player.Player;
-import emu.lunarcore.game.scene.entity.EntityMonster;
-import emu.lunarcore.util.Position;
-
-@SuppressWarnings("unused")
-public class PlayerCommands {
-    private static HashMap<String, PlayerCommand> list = new HashMap<>();
-
-    static {
-        try {
-            // Look for classes
-            for (Class<?> cls : PlayerCommands.class.getDeclaredClasses()) {
-                // Get non abstract classes
-                if (!Modifier.isAbstract(cls.getModifiers())) {
-                    Command commandAnnotation = cls.getAnnotation(Command.class);
-                    PlayerCommand command = (PlayerCommand) cls.getConstructor().newInstance();
-
-                    if (commandAnnotation != null) {
-                        command.setLevel(commandAnnotation.gmLevel());
-                        for (String alias : commandAnnotation.aliases()) {
-                            if (alias.length() == 0) {
-                                continue;
-                            }
-
-                            String commandName = "!" + alias;
-                            list.put(commandName, command);
-                            commandName = "/" + alias;
-                            list.put(commandName, command);
-                        }
-                    }
-
-                    String commandName = "!" + cls.getSimpleName().toLowerCase();
-                    list.put(commandName, command);
-                    commandName = "/" + cls.getSimpleName().toLowerCase();
-                    list.put(commandName, command);
-                }
-
-            }
-        } catch (Exception e) {
-
-        }
-    }
-
-    public static void handle(Player player, String msg) {
-        String[] split = msg.split(" ");
-
-        // End if invalid
-        if (split.length == 0) {
-            return;
-        }
-
-        //
-        String first = split[0].toLowerCase();
-        PlayerCommand c = PlayerCommands.list.get(first);
-
-        if (c != null) {
-            // Execute
-            int len = Math.min(first.length() + 1, msg.length());
-            c.execute(player, msg.substring(len));
-        } else {
-            player.dropMessage("Error: Invalid command!");
-        }
-    }
-
-    public static abstract class PlayerCommand {
-        // GM level required to use this command
-        private int level;
-        protected int getLevel() { return this.level; }
-        protected void setLevel(int minLevel) { this.level = minLevel; }
-
-        // Main
-        public abstract void execute(Player player, String raw);
-    }
-
-    // ================ Commands ================
-
-    @Command(aliases = {"g", "item"}, desc = "/give [item id] [count] - Gives {count} amount of {item id}")
-    public static class Give extends PlayerCommand {
-        @Override
-        public void execute(Player player, String raw) {
-            String[] split = raw.split(" ");
-            int itemId = 0, count = 1;
-
-            try {
-                itemId = Integer.parseInt(split[0]);
-            } catch (Exception e) {
-                itemId = 0;
-            }
-
-            try {
-                count = Math.max(Math.min(Integer.parseInt(split[1]), Integer.MAX_VALUE), 1);
-            } catch (Exception e) {
-                count = 1;
-            }
-
-            // Give
-            ItemExcel itemData = GameData.getItemExcelMap().get(itemId);
-            GameItem item;
-
-            if (itemData == null) {
-                player.dropMessage("Error: Item data not found");
-                return;
-            }
-
-            if (itemData.isEquippable()) {
-               //List<GameItem> items = new LinkedList<>();
-                for (int i = 0; i < count; i++) {
-                    item = new GameItem(itemData);
-                    //items.add(item);
-                    player.getInventory().addItem(item);
-                }
-                // TODO add item hint packet
-            } else {
-                item = new GameItem(itemData, count);
-                player.getInventory().addItem(item);
-                // TODO add item hint packet
-            }
-
-            player.dropMessage("Giving you " + count + " of " + itemId);
-        }
-    }
-    
-    @Command(aliases = {"wl", "el"}, desc = "/worldlevel [world level]")
-    public static class WorldLevel extends PlayerCommand {
-        @Override
-        public void execute(Player player, String raw) {
-            int level = 0;
-
-            try {
-                level = Integer.parseInt(raw);
-            } catch (Exception e) {
-                level = 0;
-            }
-
-            level = Math.min(Math.max(level, 0), 6);
-
-            // Set world level
-            player.setWorldLevel(level);
-            player.dropMessage("Set world level to " + level);
-        }
-    }
-    
-    @Command(aliases = {"ga"}, desc = "/giveall {materials|avatars}")
-    public static class GiveAll extends PlayerCommand {
-        @Override
-        public void execute(Player player, String raw) {
-            switch (raw) {
-                case "materials":
-                    //
-                    List<GameItem> items = new ArrayList<>();
-                    // Character/Relic/Lightcone upgrade materials
-                    for (ItemExcel excel : GameData.getItemExcelMap().values()) {
-                        int purpose = excel.getPurposeType();
-                        if (purpose >= 1 && purpose <= 7) {
-                            items.add(new GameItem(excel, 1000));
-                        }
-                    }
-                    // Credits
-                    items.add(new GameItem(2, 50_000_000));
-                    // Add
-                    player.getInventory().addItems(items);
-                    break;
-                case "avatars":
-                    // All avatars and their eidolons
-                    for (ItemExcel excel : GameData.getItemExcelMap().values()) {
-                        if (excel.getItemMainType() == ItemMainType.AvatarCard) {
-                            player.getInventory().addItem(excel, 1);
-                        } else if (excel.getItemSubType() == ItemSubType.Eidolon) {
-                            player.getInventory().addItem(excel, 6);
-                        }
-                    }
-                    break;
-            }
-        }
-    }
-    
-    @Command(desc = "/clearrelics")
-    public static class ClearRelics extends PlayerCommand {
-        @Override
-        public void execute(Player player, String raw) {
-            List<GameItem> toRemove = new LinkedList<>();
-            for (GameItem item : player.getInventory().getItems().values()) {
-                if (item.getItemMainType() == ItemMainType.Relic && item.getLevel() <= 1 && item.getExp() == 0 && !item.isLocked() && !item.isEquipped()) {
-                    toRemove.add(item);
-                }
-            }
-            
-            player.getInventory().removeItems(toRemove);
-        }
-    }
-
-    /* Temporarily disabled as spawned monsters need 
-    @Command(desc = "/spawn [monster id] [count] - Creates {count} amount of {item id}")
-    public static class Spawn extends PlayerCommand {
-        @Override
-        public void execute(Player player, String raw) {
-            String[] split = raw.split(" ");
-            int monsterId = 0, stageId = 2;
-
-            try {
-                monsterId = Integer.parseInt(split[0]);
-            } catch (Exception e) {
-                monsterId = 0;
-            }
-
-            try {
-                stageId = Integer.parseInt(split[1]);
-            } catch (Exception e) {
-                stageId = 2;
-            }
-
-            // TODO
-            NpcMonsterExcel excel = GameData.getNpcMonsterExcelMap().get(monsterId);
-            if (excel == null) {
-                player.dropMessage("Npc monster id not found!");
-                return;
-            }
-
-            StageExcel stage = GameData.getStageExcelMap().get(stageId);
-            if (stage == null) {
-                player.dropMessage("Stage id not found!");
-                return;
-            }
-
-            Position pos = player.getPos().clone();
-            pos.setX(pos.getX() + 50);
-
-            // Add to scene
-            EntityMonster monster = new EntityMonster(excel, stage, pos);
-            player.getScene().addMonster(monster);
-        }
-    }
-    */
-}

src/main/java/emu/lunarcore/commands/ServerCommands.java

@@ -1,102 +0,0 @@
-package emu.lunarcore.commands;
-
-import java.lang.reflect.Modifier;
-import java.util.HashMap;
-
-import emu.lunarcore.LunarRail;
-import emu.lunarcore.game.account.AccountHelper;
-import emu.lunarcore.util.Utils;
-
-@SuppressWarnings("unused")
-public class ServerCommands {
-    private static HashMap<String, ServerCommand> list = new HashMap<>();
-
-    static {
-        try {
-            // Look for classes
-            for (Class<?> cls : ServerCommands.class.getDeclaredClasses()) {
-                // Get non abstract classes
-                if (!Modifier.isAbstract(cls.getModifiers())) {
-                    String commandName = cls.getSimpleName().toLowerCase();
-                    list.put(commandName, (ServerCommand) cls.newInstance());
-                }
-            }
-        } catch (Exception e) {
-
-        }
-    }
-
-    public static void handle(String msg) {
-        String[] split = msg.split(" ");
-
-        // End if invalid
-        if (split.length == 0) {
-            return;
-        }
-
-        //
-        String first = split[0].toLowerCase();
-        ServerCommand c = ServerCommands.list.get(first);
-
-        if (c != null) {
-            // Execute
-            int len = Math.min(first.length() + 1, msg.length());
-            c.execute(msg.substring(len));
-        } else {
-            LunarRail.getLogger().info("Invalid command!");
-        }
-    }
-
-    public static abstract class ServerCommand {
-        public abstract void execute(String raw);
-    }
-
-    // ================ Commands ================
-
-    private static class Account extends ServerCommand {
-        @Override
-        public void execute(String raw) {
-            String[] split = raw.split(" ");
-
-            if (split.length < 2) {
-                LunarRail.getLogger().error("Invalid amount of args");
-                return;
-            }
-            
-            String command = split[0].toLowerCase();
-            String username = split[1];
-
-            switch (command) {
-            case "create":
-                if (split.length < 2) { // Should be 3 if passwords were enabled
-                    LunarRail.getLogger().error("Invalid amount of args");
-                    return;
-                }
-
-                // Get password
-                //String password = split[2];
-
-                // Reserved player uid
-                int reservedUid = 0;
-                if (split.length >= 3) {
-                    reservedUid = Utils.parseSafeInt(split[2]);
-                }
-
-                if (AccountHelper.createAccount(username, null, reservedUid)) {
-                    LunarRail.getLogger().info("Account created");
-                } else {
-                    LunarRail.getLogger().error("Account already exists");
-                }
-                break;
-            case "delete":
-                if (AccountHelper.deleteAccount(username)) {
-                    LunarRail.getLogger().info("Account deleted");
-                } else {
-                    LunarRail.getLogger().info("Account doesnt exist");
-                }
-                break;
-            }
-        }
-    }
-
-}

src/main/java/emu/lunarcore/game/chat/ChatManager.java

@@ -3,7 +3,7 @@ package emu.lunarcore.game.chat;
 import java.util.Collection;
 
 import emu.lunarcore.GameConstants;
-import emu.lunarcore.commands.PlayerCommands;
+import emu.lunarcore.LunarRail;
 import emu.lunarcore.game.player.BasePlayerManager;
 import emu.lunarcore.game.player.Player;
 import emu.lunarcore.server.packet.send.PacketRevcMsgScNotify;
@@ -52,7 +52,7 @@ public class ChatManager extends BasePlayerManager {
 
         // Check if command
         if (text.charAt(0) == '!' || text.charAt(0) == '/') {
-            PlayerCommands.handle(getPlayer(), text);
+            LunarRail.getCommandManager().invoke(getPlayer(), text);
             return;
         }
 

src/main/java/emu/lunarcore/game/player/Player.java

@@ -479,7 +479,7 @@ public class Player {
         return true;
     }
 
-    public void dropMessage(String message) {
+    public void sendMessage(String message) {
         var msg = new ChatMessage(GameConstants.SERVER_CONSOLE_UID, this.getUid(), message);
         this.getChatManager().addChatMessage(msg);
     }

src/main/java/emu/lunarcore/util/Utils.java

@@ -89,6 +89,10 @@ public class Utils {
     }
 
     public static int parseSafeInt(String s) {
+        if (s == null) {
+            return 0;
+        }
+        
         int i = 0;
 
         try {
@@ -101,6 +105,10 @@ public class Utils {
     }
 
     public static long parseSafeLong(String s) {
+        if (s == null) {
+            return 0;
+        }
+        
         long i = 0;
 
         try {