Simplify Error messages for user

BauSystem_Main/src/de/steamwar/bausystem/world/ScriptListener.java

@@ -44,8 +44,18 @@ public class ScriptListener implements Listener {
 
     private Set<Player> playerSet = new HashSet<>();
 
+    public ScriptListener() {
+        Bukkit.getScheduler().runTaskTimer(BauSystem.getPlugin(), () -> {
+            playerSet.clear();
+        }, 1, 1);
+    }
+
     @EventHandler(priority = EventPriority.HIGH)
     public void onLeftClick(PlayerInteractEvent event) {
+        ItemStack item = event.getItem();
+        if(item == null || isNoBook(item) || item.getItemMeta() == null)
+            return;
+
         if (event.getAction() != Action.LEFT_CLICK_AIR && event.getAction() != Action.LEFT_CLICK_BLOCK) {
             if (event.getAction() == Action.RIGHT_CLICK_AIR) {
                 playerSet.add(event.getPlayer());
@@ -56,10 +66,6 @@ public class ScriptListener implements Listener {
             return;
         }
 
-        ItemStack item = event.getItem();
-        if(item == null || isNoBook(item) || item.getItemMeta() == null)
-            return;
-
         event.setCancelled(true);
         new ScriptExecutor((BookMeta) item.getItemMeta(), event.getPlayer());
     }
@@ -85,8 +91,7 @@ public class ScriptListener implements Listener {
 
             for(String page : bookMeta.getPages()) {
                 for (String command : page.split("\n")) {
-                    if (command.startsWith("#")) continue;
+                    if (command.startsWith("#") || command.trim().isEmpty()) continue;
-                    if (command.trim().isEmpty()) continue;
                     commands.add(command);
                 }
             }
@@ -121,7 +126,7 @@ public class ScriptListener implements Listener {
     }
 
     private static String[] generateArgumentArray(String command, String fullCommand) {
-        return fullCommand.substring(command.length() + 1).split(" ");
+        return fullCommand.substring(command.length()).trim().split(" ");
     }
 
     private static void sleepCommand(ScriptExecutor scriptExecutor, String[] args) {
@@ -130,11 +135,11 @@ public class ScriptListener implements Listener {
             try {
                 sleepTime = Integer.parseInt(args[0]);
                 if (sleepTime <= 0) {
-                    scriptExecutor.player.sendMessage(scriptPrefix + "Sleep kleiner gleich 0, default 1 GameTick");
+                    scriptExecutor.player.sendMessage(scriptPrefix + "Eine Sleep zeit von kleiner gleich 0 ist nicht erlaubt. Der default 1 Tick wird verwendet.");
                     sleepTime = 1;
                 }
             } catch (NumberFormatException e) {
-                scriptExecutor.player.sendMessage(scriptPrefix + "Sleep ohne Zahl, default 1 GameTick");
+                scriptExecutor.player.sendMessage(scriptPrefix + "Eine Sleep zeit sollte keine Buchstaben oder sonstige Zeiten verwenden. Der default 1 Tick wird verwendet.");
             }
         }
         Bukkit.getScheduler().runTaskLater(BauSystem.getPlugin(), scriptExecutor::resume, sleepTime);