Merge pull request 'Allow stationary moving pistons during preparation' (#316) from stationaryMovingPistons into master

Reviewed-on: #316
Reviewed-by: YoyoNow <jwsteam@nidido.de>

FightSystem_Core/src/de/steamwar/fightsystem/listener/PrepareSchem.java

@@ -26,6 +26,7 @@ import de.steamwar.fightsystem.FightSystem;
 import de.steamwar.fightsystem.fight.Fight;
 import de.steamwar.fightsystem.fight.FightTeam;
 import de.steamwar.fightsystem.states.FightState;
+import de.steamwar.fightsystem.states.OneShotStateDependent;
 import de.steamwar.fightsystem.states.StateDependentListener;
 import de.steamwar.fightsystem.utils.FlatteningWrapper;
 import de.steamwar.fightsystem.utils.Region;
@@ -37,10 +38,25 @@ import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.util.Vector;
+
+import java.util.HashSet;
+import java.util.Set;
 
 public class PrepareSchem implements Listener {
 
+    private final Set<Vector> stationaryMovingPistons = new HashSet<>();
+
     public PrepareSchem() {
+        new OneShotStateDependent(ArenaMode.Prepare, FightState.PostSchemSetup, () -> Bukkit.getScheduler().runTaskLater(FightSystem.getPlugin(), () -> {
+            stationaryMovingPistons.clear();
+            World world = Bukkit.getWorlds().get(0);
+            Fight.getUnrotated().getSchemRegion().forEach((x, y, z) -> {
+                if(FlatteningWrapper.impl.checkPistonMoving(world.getBlockAt(x, y, z)))
+                    stationaryMovingPistons.add(new Vector(x, y, z));
+            });
+        }, 1));
+
         new StateDependentListener(ArenaMode.Prepare, FightState.Setup, this){
             @Override
             public void disable() {
@@ -60,7 +76,7 @@ public class PrepareSchem implements Listener {
 
                 try{
                     region.forEach((x, y, z) -> {
-                        if(FlatteningWrapper.impl.checkPistonMoving(world.getBlockAt(x, y, z))){
+                        if(FlatteningWrapper.impl.checkPistonMoving(world.getBlockAt(x, y, z)) && !stationaryMovingPistons.contains(new Vector(x, y, z))){
                             FightSystem.getMessage().broadcast("PREPARE_ACTIVE_PISTON");
                             Bukkit.shutdown();
                             throw new IllegalStateException();