Fix pistons destroying blocks

Signed-off-by: Lixfel <agga-games@gmx.de>

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

@@ -25,6 +25,7 @@ import de.steamwar.fightsystem.states.FightState;
 import de.steamwar.fightsystem.states.StateDependentListener;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
+import org.bukkit.block.PistonMoveReaction;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.BlockPistonExtendEvent;
@@ -44,7 +45,8 @@ public class PistonListener implements Listener {
     public void handlePistonExtend(BlockPistonExtendEvent e){
         BlockFace face = e.getDirection();
         for(Block block : e.getBlocks()){
-            if(!Config.BlueExtendRegion.inRegion(block.getRelative(face)) && !Config.RedExtendRegion.inRegion(block.getRelative(face))){
+            Block target = block.getRelative(face);
+            if(!Config.BlueExtendRegion.inRegion(target) && !Config.RedExtendRegion.inRegion(target) && block.getPistonMoveReaction() != PistonMoveReaction.BREAK) {
                 e.setCancelled(true);
                 return;
             }