BauSystem_15/src/de/steamwar/bausystem/world/AutoLoader_15.java

@@ -49,6 +49,7 @@ class AutoLoader_15 {
         if (!(data instanceof Powerable))
             return false;
 
+
         Powerable powerable = (Powerable) data;
         powerable.setPowered(active);
         block.setBlockData(powerable);
@@ -97,11 +98,7 @@ class AutoLoader_15 {
         Material material = block.getType();
 
         if (material == Material.LEVER) {
-            if (powerable.isPowered()) {
-                return new Detoloader("Hebel", 0).setActive(false);
-            } else {
-                return new Detoloader("Hebel", 0).setActive(true);
-            }
+            return new Detoloader("Hebel", 0).setActive(!powerable.isPowered());
         } else if (material == Material.STONE_BUTTON) {
             return new Detoloader("Knopf", Detoloader.STONE_BUTTON);
         } else if (material.name().contains("PRESSURE_PLATE")){
@@ -118,6 +115,8 @@ class AutoLoader_15 {
     }
 
     static boolean getLever(Block block) {
+        if(!(block.getBlockData() instanceof Powerable))
+            return false;
         return ((Powerable) block.getBlockData()).isPowered();
     }
 }

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

@@ -41,7 +41,7 @@ import java.util.stream.Collectors;
 public class Detonator implements Listener {
 
     public static final ItemStack WAND;
-    private static final Map<Player, Detonator> PLAYERS = new HashMap<>();
+    private static final Map<Player, Detonator> players = new HashMap<>();
 
     private final Set<Detoloader.DetonatorActivation> locs = new HashSet<>();
     private final Player player;
@@ -61,19 +61,20 @@ public class Detonator implements Listener {
     }
 
     public static Detonator getDetonator(Player player){
-        if(!PLAYERS.containsKey(player))
+        if(!players.containsKey(player))
             return new Detonator(player);
-        return PLAYERS.get(player);
+        return players.get(player);
     }
 
     public Detonator(Player player) {
         this.player = player;
         Bukkit.getPluginManager().registerEvents(this, BauSystem.getPlugin());
-        PLAYERS.put(player, this);
+        players.put(player, this);
     }
 
     public static void deleteDetonator(Player player) {
-        HandlerList.unregisterAll(PLAYERS.remove(player));
+        if(players.containsKey(player))
+            HandlerList.unregisterAll(players.remove(player));
     }
 
     public void execute() {
@@ -86,12 +87,7 @@ public class Detonator implements Listener {
 
                 }, 12), new VersionedRunnable(() -> {
                     boolean powered;
-                    try {
                     powered = AutoLoader_15.getLever(activation.location.getBlock());
-                    } catch (ClassCastException e) {
-                        locs.remove(activation);
-                        return;
-                    }
                     AutoLoader_15.setRedstone(activation.location, !powered);
                 }, 15));
             } else {
@@ -113,6 +109,7 @@ public class Detonator implements Listener {
     public void onPlayerInteract(PlayerInteractEvent event) {
         if(!event.getPlayer().equals(player))
             return;
+
         if (event.getItem() == null) return;
         if (event.getItem().isSimilar(WAND)) {
             event.setCancelled(true);