fixed task duplication by refactoring how tasks are managed through tasks or command

config.yml

@@ -0,0 +1,39 @@
+# general
+prefix: null
+minplayers: 2
+maxplayers: 4
+# The language selected here can only be changed by reloading the plugin
+# the language must equal the language file in ../lang
+# by default avaiable are: de-ger, en-us
+language: "en-us"
+autorestart: false
+lobby-auto-queue: true
+force-on-spawn: true
+lobby-server: "lobby"
+
+# scoreboard
+scoreboard:
+  lobby:
+    player: "Player:"
+    timeleft: "Starting in:"
+    server: "your.server.ip"
+  ingame:
+    timeleft: "Time:"
+    player: "Player:"
+    alive: "Alive:"
+    kills: "kills:"
+    server: "your.server.ip"
+
+# spawn points
+lobby: null
+arena: null
+
+# Permissions
+admin:
+  all: "tw.admin"
+  setlocation:
+    all: "tw.admin.setlocation"
+    lobby: "tw.admin.setlocation.lobby"
+    arena: "tw.admin.setlocation.arena"
+  start: "tw.admin.start"
+  stop: "tw.admin.stop"

src/main/java/de/steev/Tridentwar/commands/TridentwarCommand.java

@@ -38,6 +38,7 @@ public class TridentwarCommand implements CommandExecutor {
                 case "start":
                     if(commandSender.hasPermission(this.gameManager.getPlugin().config.getString("admin.start")) ||
                             commandSender.hasPermission(this.gameManager.getPlugin().config.getString("admin.all"))) {
+                        gameManager.getLobbyWaitingTask().cancel();
                         gameManager.setGameState(GameState.STARTING);
                     } else {
                         // Get permission error message from config

src/main/java/de/steev/Tridentwar/tasks/LobbyWaitingTask.java

@@ -4,6 +4,7 @@ import de.steev.Tridentwar.manager.GameManager;
 import de.steev.Tridentwar.manager.GameState;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
+import org.bukkit.GameMode;
 import org.bukkit.entity.Player;
 import org.bukkit.scheduler.BukkitRunnable;
 import org.bukkit.scoreboard.DisplaySlot;
@@ -25,12 +26,21 @@ public class LobbyWaitingTask extends BukkitRunnable {
 
     @Override
     public void run() {
+
+        if (Bukkit.getOnlinePlayers().size() >= this.gameManager.getPlugin().config.getInt("maxplayers")) {
+            timeLeft=10;
+        }
+
         Scoreboard board = manager.getNewScoreboard();
 
         Objective obj = board.registerNewObjective("Tridentwar", "dummy", "SLPNetwork");
         obj.setDisplaySlot(DisplaySlot.SIDEBAR);
 
+
+        timeLeft--;
+
         for (Player player : Bukkit.getOnlinePlayers()){
+
             obj.getScore("=-=-=-=-=-=-=-=-=-=-=").setScore(4);
             obj.getScore(this.gameManager.getPlugin().config.getString("scoreboard.lobby.player") + " " + player.getDisplayName()).setScore(3);
             obj.getScore(this.gameManager.getPlugin().config.getString("scoreboard.lobby.timeleft") + " " + timeLeft).setScore(2);
@@ -40,7 +50,6 @@ public class LobbyWaitingTask extends BukkitRunnable {
             player.setScoreboard(board);
         }
 
-        timeLeft--;
         this.gameManager.getMessageManager().broadCastXPBar(ChatColor.translateAlternateColorCodes('&', this.gameManager.getPlugin().languageDataConfig.getString("game.countdown") + timeLeft));
         if (timeLeft > 10) {
             switch (timeLeft) {
@@ -64,7 +73,7 @@ public class LobbyWaitingTask extends BukkitRunnable {
                 } else {
                     Bukkit.broadcastMessage(ChatColor.translateAlternateColorCodes('&',
                             this.gameManager.getFileHandler().replaceVars(this.gameManager.getPlugin().languageDataConfig.getString("game.starting"), null, null)));
-                    gameManager.setGameState(GameState.STARTING);
+                    this.gameManager.setGameState(GameState.ACTIVE);
                 }
                 cancel();
                 return;