Hotfix SignEditFrom20

Signed-off-by: yoyosource <yoyosource@nidido.de>

BauSystem_Main/src/de/steamwar/bausystem/features/world/SignEditFrom20.java

@@ -31,6 +31,7 @@ import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
 import org.bukkit.block.Sign;
 import org.bukkit.block.data.BlockData;
+import org.bukkit.block.data.Directional;
 import org.bukkit.block.data.Rotatable;
 import org.bukkit.block.sign.Side;
 import org.bukkit.block.sign.SignSide;
@@ -96,7 +97,15 @@ public class SignEditFrom20 implements Listener {
 
     private Side signSide(Player entity, Block sign) {
         Vector vector = entity.getEyeLocation().toVector().subtract(sign.getLocation().add(0.5, 0.5, 0.5).toVector());
-        BlockFace blockFace = ((org.bukkit.block.data.type.Sign) sign.getBlockData()).getRotation();
+        BlockData blockData = sign.getBlockData();
+
+        BlockFace blockFace = BlockFace.NORTH;
+        if (blockData instanceof Directional) {
+            blockFace = ((Directional) blockData).getFacing();
+        } else if (blockData instanceof Rotatable) {
+            blockFace = ((Rotatable) blockData).getRotation();
+        }
+
         Vector signDirection = new Vector(blockFace.getModX(), blockFace.getModY(), blockFace.getModZ());
         return vector.dot(signDirection) > 0 ? Side.FRONT : Side.BACK;
     }