Initial commit

.gitignore

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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>me.coolmagic233.countdown</groupId>
+    <artifactId>CountDown</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>cn.nukkit</groupId>
+            <artifactId>Nukkit</artifactId>
+            <version>1.0</version>
+            <scope>system</scope>
+            <systemPath>${project.basedir}/libs/server.jar</systemPath>
+        </dependency>
+        <dependency>
+            <groupId>tip</groupId>
+            <artifactId>Tips</artifactId>
+            <version>2.1.8</version>
+            <scope>system</scope>
+            <systemPath>${project.basedir}/libs/Tips-2.1.8-SNAPSHOT.jar</systemPath>
+        </dependency>
+    </dependencies>
+
+
+</project>

src/main/java/me/coolmagic233/countdown/CountDown.java

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+package me.coolmagic233.countdown;
+
+import cn.nukkit.Player;
+import cn.nukkit.command.Command;
+import cn.nukkit.command.CommandSender;
+import cn.nukkit.plugin.PluginBase;
+import cn.nukkit.scheduler.Task;
+import tip.utils.Api;
+
+import java.text.SimpleDateFormat;
+import java.time.*;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class CountDown extends PluginBase {
+    // 获取当前时间
+    private static LocalDateTime now = LocalDateTime.now();
+
+    // 获取新年时间（假设为2023年1月1日 00:00:00）
+    private static LocalDateTime newYear = LocalDateTime.of(LocalDate.now(), LocalTime.now());
+
+    // 计算时间差
+    private static Duration duration = Duration.between(now, newYear);
+
+    // 获取时间差的总秒数
+    private static long seconds = duration.getSeconds();
+    // 计算天数
+    long days = seconds / (60 * 60 * 24);
+    private static boolean start;
+    private static String message = "";
+    private static List<String> commands = new ArrayList<>();
+
+    @Override
+    public void onEnable(){
+        saveDefaultConfig();
+        commands.addAll(getConfig().getStringList("commands"));
+        getServer().getCommandMap().register("me.coolmagic233.countdown.CountDown", new Command("cd") {
+            @Override
+            public boolean execute(CommandSender commandSender, String s, String[] strings) {
+                if (commandSender.isOp()){
+                    switch (strings[0]){
+                        case "stop":
+                            start = false;
+                            commandSender.sendMessage("§a已停止倒计时任务.");
+                            break;
+                        case "start":
+                            //cd start 2024 1 1 0 0 0
+                            if (strings.length == 7){
+                                if (start){
+                                    commandSender.sendMessage("§c倒计时任务已经启动了! /cd stop 即可停止");
+                                    return true;
+                                }
+                                try{
+                                    int year = Integer.parseInt(strings[1]);
+                                    int month = Integer.parseInt(strings[2]);
+                                    int days = Integer.parseInt(strings[3]);
+                                    int hour = Integer.parseInt(strings[4]);
+                                    int minute = Integer.parseInt(strings[5]);
+                                    int seconds = Integer.parseInt(strings[6]);
+                                    newYear = LocalDateTime.of(year, month, days, hour, minute, seconds);
+                                    start = true;
+                                      start();
+                                    commandSender.sendMessage("§a倒计时任务启动成功!");
+                                    if (message.length() < 5 ){
+                                        commandSender.sendMessage("§a建议 -> 请设置倒计时文本显示，否则将不会显示倒计时内容");
+                                    }
+                                }catch (Exception e){
+                                    e.printStackTrace();
+                                    commandSender.sendMessage("§c启动任务时发生异常!可能是参数错误!");
+                                }
+                            }else {
+                                commandSender.sendMessage("§c参数不足!");
+                                return true;
+                            }
+                            break;
+                        case "setMessage":
+                            if (strings.length == 2){
+                                message = strings[1];
+                                commandSender.sendMessage("§a设置成功!");
+                            }
+                            break;
+                        case "reload":
+                            reload();
+                            commandSender.sendMessage("§a重载成功!§c重载会停止倒计时任务!");
+                            break;
+                        default:break;
+                    }
+                }
+                return false;
+            }
+        });
+    }
+    public void reload(){
+        reloadConfig();
+        commands.clear();
+        commands.addAll(getConfig().getStringList("commands"));
+        start = false;
+    }
+    public void start() {
+        getServer().getScheduler().scheduleRepeatingTask(new Task() {
+            @Override
+            public void onRun(int i) {
+                if (!start){
+                    this.cancel();
+                    return;
+                }
+                String now = new SimpleDateFormat().format(new Date().getTime());
+                if (now.equals(new SimpleDateFormat().format(Date.from(newYear.atZone(ZoneId.systemDefault()).toInstant())))){
+                    start = false;
+                    this.cancel();
+                    for (Player player : getServer().getOnlinePlayers().values()) {
+                        if (player.isOnline()) {
+                            for (String s : commands) {
+                                String[] cmd = s.split("&");
+                                if ((cmd.length > 1) && ("con".equals(cmd[1]))) {
+                                    getServer().dispatchCommand(getServer().getConsoleSender(), cmd[0].replace("@p", player.getName()));
+                                }else {
+                                    getServer().dispatchCommand(player, cmd[0].replace("@p", player.getName()));
+                                }
+                            }
+                        }
+                    }
+                }
+                // 剩余秒数
+                seconds %= (60 * 60 * 24);
+
+                // 计算小时数
+                long hours = seconds / (60 * 60);
+
+                // 剩余秒数
+                seconds %= (60 * 60);
+
+                // 计算分钟数
+                long minutes = seconds / 60;
+                // 剩余秒数
+                seconds %= 60;
+                // 每秒钟更新一次时间差和倒计时信息
+
+                // 更新时间差
+                duration = Duration.between(LocalDateTime.now(), newYear);
+                seconds = duration.getSeconds();
+
+                // 转换时间差
+                days = seconds / (60 * 60 * 24);
+                seconds %= (60 * 60 * 24);
+                hours = seconds / (60 * 60);
+                seconds %= (60 * 60);
+                minutes = seconds / 60;
+                seconds %= 60;
+                // 打印倒计时信息
+                for (Player player : getServer().getOnlinePlayers().values()) {
+                    if (getServer().getPluginManager().getPlugin("Tips") != null){
+                        player.sendActionBar(Api.strReplace(message.replace("@day",String.valueOf(days)).replace("@hour",String.valueOf(hours)).replace("@min",String.valueOf(minutes)).replace("@s",String.valueOf(seconds)),player));
+                    }else {
+                        player.sendActionBar(message.replace("@day",String.valueOf(days)).replace("@hour",String.valueOf(hours)).replace("@min",String.valueOf(minutes)).replace("@s",String.valueOf(seconds)));
+                    }
+                }
+            }
+        },20);
+    }
+}

src/main/resources/config.yml

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+#当倒计时结束时
+#执行命令
+commands:
+  - "say hello &con"

src/main/resources/plugin.yml

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+name: CountDown
+main: me.coolmagic233.countdown.CountDown
+version: 0.1
+api: 1.0.0