基于Java的Minecraft游戏后端自定义插件 04注册命令与处理

内容简介

如何注册命令(理解)
如何重写JavaPlugin中的onCommand方法来做到命令处理(理解，重点)
如何在一个独立类中作为命令处理类(理解，重点)

如何注册命令

权限设置

看到这里你可能会问，若是没有权限组我该如何配置玩家的 权限 ？既然 Bukkit API 本身并没有提供用户组的预设,
你必须通过安装一款权限组插件，
像 permissionsBukkit 这样的插件来帮助你配置用户群. API 只是提供接口而不是提供已实现的类.

plugin.yml权限

luckpermission

插件使用方法
https://github.com/lucko/LuckPerms/wiki

如何进行命令的设计以实现玩家输入相应的指令完成相应的操作？
①编写yml文件，赋予玩家可用操作命令以及权限，包括打开图鉴及装备称号等相关需要输入命令以实现，例如/open 以打开各种界面，/vftxi 以装备特效及称号，/chengjiu 设置或查询玩家的成就点数；

在resources目录下新建一个名为plugin的文件，并将其后缀改为.yml
我所设置的操作命令及权限如下：

name: Myplugin
main: com.project.minecraft.main
version: 1.0.0
author: roger0123

depend:
  - VexView
  - PlaceholderAPI
  - Vault
commands:
  hgd:
    description: "这个命令是好感度操作的命令"
    usage: "使用方法: /hgd <Order>"
    permission: "MyPlugin.hgd"
    permission-message: "你没有操作好感度的权限"
  open:
    description: "这个命令是打开图鉴界面的命令"
    usage: "使用方法: /open <GuiName>"
    permission: "MyPlugin.open"
    permission-message: "你没有打开图鉴界面的权限"
  vftxi:
    description: "这个命令是称号操作的命令"
    usage: "使用方法: /vftxi <Order>"
    permission: "MypPlugin.vftxi"
    permission-message: "你没有装备称号的权限"
  chengjiu:
    description: "这个命令是成就操作的命令"
    usage: "使用方法: /vftxi <Order>"
    permission: "MypPlugin.chengjiu"
    permission-message: "你没有操作成就的权限"
  sayMyName:
    description: this command says its sender's name
    usage: "Usage: /sayMyName"
    permission: "plugin.sayMyName"
    permission-message: "you don't have access to this plugin"
  handbook:
    description: this command opens player's handbook
    usage: "Usage: /handbook"
    permission: "plugin.handbook"
    permission-message: "you don't have access to this plugin"
  DBCommand:
    description: this command uses SQLite
    usage: "Usage: /DBCommand"
    permission: "plugin.DBCommand"
    permission-message: "you don't have access to this plugin"


permissions:
  hgd.*:
    description: "操作好感度权限集合"
    children:
      hgd.set: op
  hgd.set:
    description: "管理员才有设置好感度的权限"
    default: op

  open.*:
    description: "打开图鉴界面权限集合"
    children:
      open.tuijianGui: true
      open.zhiwuGui: true
      open.shengwuGui: true
      open.zhuangbeiGui: true
      open.taskGui: true
  open.tujianGui:
    description: "普通玩家就有打开图鉴界面的权限"
    default: true
  open.zhiwuGui:
    description: "普通玩家就有打开植物图鉴界面的权限"
    default: true
  open.shengwuGui:
    description: "普通玩家就有打开生物图鉴界面的权限"
    default: true
  open.zhuangbeiGui:
    description: "普通玩家就有打开装备图鉴界面的权限"
    default: true
  open.chengjiuGui:
    description: "普通玩家就有打开悬赏任务界面的权限"
    default: true

  vftxi.*:
    description: "装备称号权限集合"
    children:
      vftxi.opench: true
      vftxi.hidech: true
      vftxi.showch: true
      vftxi.chhelp: true
      vftxi.opentx: true
      vftxi.openhud: true
      vftxi.closehud: true
      vftxi.zbtx1: true
      vftxi.zbtx2: true
  vftxi.opench:
    description: "普通玩家就有打开称号界面的权限"
    default: true
  vftxi.showch:
    description: "普通玩家就有显示装备称号的权限"
    default: true
  vftxi.hidech:
    description: "普通玩家就有取消装备称号的权限"
    default: true
  vftxi.chhelp:
    description: "普通玩家就有打开称号帮助的权限"
    default: true
  vftxi.opentx:
    description: "普通玩家就有打开特效界面的权限"
    default: true
  vftxi.openhud:
    description: "普通玩家就有打开健康游戏公告的权限"
    default: true
  vftxi.closehud:
    description: "普通玩家就有关闭健康游戏公告的权限"
    default: true
  vftxi.zbtx1:
    description: "普通玩家就有装备特效1的权限"
    default: true
  vftxi.zbtx2:
    description: "普通玩家就有装备特效2的权限"
    default: true

  chengjiu.*:
    description: "成就操作权限集合"
    children:
      chengjiu.set: op
      chengjiu.get: true
      chengjiu.show: true
    chengjiu.set:
      description: "管理员才有设置成就点数的权限"
      default: op
    chengjiu.show:
      description: "普通玩家就有查询成就列表的权限"
      default: true
    chengjiu.get:
      description: "普通玩家就有查询成就点数的权限"
      default: true


  handbook.*:
    description: "便捷命令权限集合"
    children:
      handbook.menu: true
      handbook.creeper: true
  handbook.menu:
    description: "普通玩家就有打开菜单界面的权限"
    default: true
  handbook.creeper:
    description: "普通玩家就有随地生成creeper的权限"
    default: true

②编写Command类，

如对命令进行输入和玩家权限判断以及对玩家进行操作提示；
我所设计的操作命令包括（主菜单界面操作、图鉴界面操作和成就奖励界面操作）如下：

// 主菜单界面操作
package com.project.minecraft.commands;

import com.connorlinfoot.titleapi.TitleAPI;
import com.project.minecraft.vexview.MyGui_tujian;
import lk.vexview.api.VexViewAPI;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class MyCommandOpen implements CommandExecutor {

    @Override
    public boolean onCommand(CommandSender commandSender, Command command, String label, String[] strings) {

        if (strings.length == 0){

            commandSender.sendMessage("§5-----------图鉴界面模块-----------");
            commandSender.sendMessage("§5 /open tujianGUi    §d打开图鉴列表");
            commandSender.sendMessage("§5 /open zhiwuGUi     §d打开植物图鉴");
            commandSender.sendMessage("§5 /open shengwuGui   §d打开生物图鉴");
            commandSender.sendMessage("§5 /open zhuangbeiGui §d打开装备图鉴");
            commandSender.sendMessage("§5 /open taskGui      §d打开悬赏任务");
            return true;
        }

        if(commandSender instanceof Player){
            Player player = (Player) commandSender;

            if(!player.hasPermission("MyPlugin.open")){
                return true;
            }
            if(label.equalsIgnoreCase("open")){
               //open <GuiName>
                if(strings[0].equalsIgnoreCase("tujianGUi")){
                    //打开图鉴界面
                    VexViewAPI.openGui(player, MyGui_tujian.tujianGui());
                    player.sendMessage("§d打开图鉴界面§e成功");
                    TitleAPI.sendTitle(player,5,4,5,"§1Minecraft图鉴","§2图鉴列表");
                }else if(strings[0].equalsIgnoreCase("zhiwuGui")){
                    //打开植物图鉴界面
                    VexViewAPI.openGui(player, MyGui_tujian.zhiwuGui());
                    player.sendMessage("§d打开植物图鉴界面§e成功");
                    TitleAPI.sendTitle(player,5,4,5,"§1Minecraft图鉴","§2植物图鉴");
                }else if(strings[0].equalsIgnoreCase("shengwuGui")){
                    //打开图鉴界面
                    VexViewAPI.openGui(player, MyGui_tujian.shengwuGui());
                    player.sendMessage("§d打开生物图鉴界面§e成功");
                    TitleAPI.sendTitle(player,5,4,5,"§1Minecraft图鉴","§2生物图鉴");
                }else if(strings[0].equalsIgnoreCase("zhuangbeiGui")){
                    //打开装备图鉴界面
                    VexViewAPI.openGui(player, MyGui_tujian.zhuangbeiGui());
                    player.sendMessage("§d打开装备图鉴界面§e成功");
                    TitleAPI.sendTitle(player,5,4,5,"§1Minecraft图鉴","§2装备图鉴");
                }else if(strings[0].equalsIgnoreCase("taskGui")){
                    //打开装备图鉴界面
                    VexViewAPI.openGui(player, MyGui_tujian.chengjiuGui());
                    player.sendMessage("§d打开悬赏任务界面§e成功");
                    TitleAPI.sendTitle(player,5,4,5,"§1Minecraft图鉴","§2悬赏任务");
                }else{
                    player.sendMessage("§d打开图鉴界面§e失败，§f请检查输入的指令是否为open <GuiName>");
                }
            }
        }else{
            commandSender.sendMessage("§d打开图鉴界面§e失败，§f请检查输入的指令是否为open <GuiName>");
        }
        return true;
    }
}

// 图鉴界面操作
package com.project.minecraft.commands;

import FzmXer.VexFxTitle.Gui.FxTitleGui;
import FzmXer.VexFxTitle.Gui.PlayerTags;
import FzmXer.VexFxTitle.SQL.DataManager;
import FzmXer.VexFxTitle.Utils.Utils;
import com.connorlinfoot.titleapi.TitleAPI;
import com.project.minecraft.dao.SQLManager;
import com.project.minecraft.vexview.Jiangli_Effect1;
import com.project.minecraft.vexview.Jiangli_Effect2;
import com.project.minecraft.vexview.MyGui_tujian;
import lk.vexview.api.VexViewAPI;
import lk.vexview.hud.VexImageShow;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class MyVexViewCmd implements CommandExecutor {
    @Override
    public boolean onCommand(CommandSender commandSender, Command command, String label, String[] strings) {

        if (!(commandSender instanceof Player)) {
            return true;
        }
        Player player = (Player) commandSender;
        int cj = SQLManager.get().FindChengjiu(player.getName());
        if (!player.hasPermission("MyPlugin.vftxi")) {
            return true;
        }
        if (strings.length == 0) {

            player.sendMessage("§5-----------奖励操作模块-----------");
            player.sendMessage("§5 /vftxi openhud    §d打开健康公告");
            player.sendMessage("§5 /vftxi closehud   §d关闭健康公告");
            player.sendMessage("§5 /vftxi chhelp     §d打开称号帮助");
            player.sendMessage("§5 /vftxi opench     §d打开称号界面");
            player.sendMessage("§5 /vftxi showch     §d显示装备称号");
            player.sendMessage("§5 /vftxi hidech     §d隐藏装备称号");
            player.sendMessage("§5 /vftxi opentx     §d打开特效界面");
            player.sendMessage("§5 /vftxi zbtx1      §d 装备特效1 ");
            player.sendMessage("§5 /vftxi zbtx2      §d 装备特效2 ");
        }
        if (label.equalsIgnoreCase("vftxi")) {
            //vftxi <Order>
            if (strings.length == 1) {
                if (strings[0].equalsIgnoreCase("openhud")) {
                    VexImageShow vis = new VexImageShow("0", "[local]欢迎.jpg", -1, -1, 240, 160, 240, 160, 10);
                    VexViewAPI.sendHUD(player, vis);
                    player.sendMessage("§d欢迎" + player.getPlayerListName() + "§e进入游戏");
//            } else if (strings[0].equalsIgnoreCase("1")){
//                TagDirection td = new TagDirection(0,0,0,true,true);
//                VexImageTag vit = new VexImageTag("chenghao1",0,0,0,"[local]羿若惊羽.gif",80,40,2,1,td);
//                VexViewAPI.addPlayerTag(player,vit);
//                VexViewAPI.addWorldTag(player.getWorld(),vit);
//                player.sendMessage("§d装备称号1§e成功");
                } else if (strings[0].equalsIgnoreCase("closehud")) {
                    VexViewAPI.removeHUD(player, "0");
                    player.sendMessage("§d关闭健康游戏公告§e成功");
//            }else if(strings[0].equalsIgnoreCase("11")){
//                VexViewAPI.removePlayerTag(player,"chenghao1");
//                VexViewAPI.removeWorldTag(player.getWorld(),"tag1");
//                player.sendMessage("§d取消称号1§e成功");
                } else if (strings[0].equalsIgnoreCase("chhelp")) {
                    if (player.isOp()) {
                        player.sendMessage("§a--------------- §a[§eVexFxTitle§a] ---------------");
                        player.sendMessage("§a/vft open  - 打开称号Gui.");
                        player.sendMessage("§a/vft show  - 称号显示.");
                        player.sendMessage("§a/vft hide  - 称号隐藏.");
                        player.sendMessage("§a/vft list [page] - 查看所有称号.");
                        player.sendMessage("§a/vft give [player] [id]  - 给予玩家对应称号.");
                        player.sendMessage("§a/vft add [player] [id]  - 添加玩家对应称号.");
                        player.sendMessage("§a/vft del [player] [id]  - 删除玩家对应称号.");
                        player.sendMessage("§a/vft reload  - 重载插件.");
                    } else {
                        player.sendMessage("§a--------------- §a[§eVexFxTitle§a] ---------------");
                        player.sendMessage("§a/vft open  - 打开称号Gui.");
                        player.sendMessage("§a/vfy show  - 称号对自己显示.");
                        player.sendMessage("§a/vft hide  - 称号对自己隐藏.");
                    }
                    player.sendMessage("§a称号帮助§e已打开");
                } else if (strings[0].equalsIgnoreCase("opench")) {
                    DataManager.SetTitleState(player.getUniqueId().toString(), 1);
                    VexViewAPI.openGui(player, new FxTitleGui(player, Utils.Scale(player)));
                    PlayerTags.ResPlayerTags(player);
                    player.sendMessage("§a称号显示界面§e已打开");
                } else if (strings[0].equalsIgnoreCase("showch")) {
                    DataManager.SetTitleState(player.getUniqueId().toString(), 1);
                    PlayerTags.ResPlayerTags(player);
                    player.sendMessage("§a称号显示: 已开启");
                } else if (strings[0].equalsIgnoreCase("hidech")) {
                    DataManager.SetTitleState(player.getUniqueId().toString(), 0);
                    PlayerTags.cencelRun(player);
                    player.sendMessage("§a称号显示: 已关闭");
                } else if (strings[0].equalsIgnoreCase("opentx")) {
                    VexViewAPI.openGui(player, MyGui_tujian.jiangliGui(player));
                    player.sendMessage("§a称号显示界面§e已打开");
                } else if (strings[0].equalsIgnoreCase("zbtx1")) {
                    if (cj > 0) {
                        Jiangli_Effect1 effect1 = new Jiangli_Effect1(player);
                        effect1.startEffect();
                        player.sendMessage("§d装备特效1“闪电风暴”§e成功");
                        TitleAPI.sendTitle(player, 5, 4, 5, "§2闪电风暴", "特效1");
                    } else {
                        player.sendMessage("§d成就点数不足！§e装备特效1“闪电风暴”失败");
                    }
                } else if (strings[0].equalsIgnoreCase("zbtx2")) {
                    if (cj >= 1500) {
                        Jiangli_Effect2 effect2 = new Jiangli_Effect2(player);
                        effect2.startEffect();
                        player.sendMessage("§d装备特效2“龙之吐息”§e成功");
                        TitleAPI.sendTitle(player, 5, 4, 5, "§2龙之吐息", "特效2");
                    } else {
                        player.sendMessage("§d成就点数不足！§e装备特效2“龙之吐息”失败");
                    }
                }
            } else {
                player.sendMessage("§a检查输入的指令是否为: /vftxi <order>");
            }
        }   return false;
    }
}

// 成就奖励界面操作
package com.project.minecraft.commands;

import com.project.minecraft.dao.SQLManager;
import com.project.minecraft.vexview.MyGui_tujian;
import lk.vexview.api.VexViewAPI;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class MyCommandCJ implements CommandExecutor {

    @Override
    public boolean onCommand(CommandSender commandSender, Command command, String label, String[] strings) {

        int ap;
        if (commandSender instanceof Player) {
            Player player = (Player) commandSender;

            if (strings.length == 0) {

                if (player.isOp()) {
                    player.sendMessage("§5-----------成就操作模块-----------");
                    player.sendMessage("§5 /chengjiu show   §d打开成就列表");
                    player.sendMessage("§5 /chengjiu get <playerName>  §d查询成就点数");
                    player.sendMessage("§5 /chengjiu set <playerName>  ap §d设置成就点数");
                } else {
                    player.sendMessage("§5-----------成就操作模块-----------");
                    player.sendMessage("§5 /chengjiu show   §d打开成就列表");
                    player.sendMessage("§5 /chengjiu get <playerName>  §d查询成就点数");
                }
                return true;
            }

            if (!player.hasPermission("MyPlugin.chengjiu")) {
                return true;
            }
            if (label.equalsIgnoreCase("chengjiu")) {
                if (strings.length == 1) {
                    //chengjiu <order>
                if (strings[0].equalsIgnoreCase("show")) {
                        //打开成就列表
                        VexViewAPI.openGui(player, MyGui_tujian.jiangliGui(player));
                        player.sendMessage("§d打开成就列表§e成功");
                }else {
                        player.sendMessage("§d成就操作§e失败，§f请检查输入的指令是否为/chengjiu <order>");
                    }
                }else if (strings.length == 2){
                  if(strings[0].equalsIgnoreCase("get")) {
                    //查询成就点数
                    player.sendMessage(player.getPlayer().getName()+"的成就点数为："+SQLManager.get().FindChengjiu(player.getName()));
                }
                } else if(strings.length == 3 ){
                    //设置成就点数
                    //chengjiu set <playerName> ap
                    if (!commandSender.hasPermission("chengjiu.set")){
                        commandSender.sendMessage("§e§l你还没有权限节点chengjiu.set");
                        return true;
                    }
                    if (SQLManager.get().HasPlayerData(strings[1])){
                        SQLManager.get().UpDataChengjiu(strings[1],Integer.parseInt(strings[2]));
                        commandSender.sendMessage("§e§l成就点数设置成功");
                    }else {
                        commandSender.sendMessage("§e§l此玩家未登陆过服务器。");
                    }
                    }
                }
            } else{
            if (strings.length==3){
                if (strings[0].equalsIgnoreCase("set")){
                    if (SQLManager.get().HasPlayerData(strings[1])){
                        SQLManager.get().UpDataChengjiu(strings[1],Integer.parseInt(strings[2]));
                        commandSender.sendMessage("§e§l成就点数设置成功");
                    }else {
                        commandSender.sendMessage("§e§l此玩家未登陆过服务器。");
                    }
                }
            }else {
                commandSender.sendMessage("控制台只能使用/chengjiu set <PlayerName> ap命令");
            }
        }
        return true;
        }

    }

③在插件main方法中对命令进行注册，使命令可用可操作。

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