Use configured unsafe blocks in height validator

randomteleport-plugin/src/main/java/de/themoep/randomteleport/RandomTeleport.java

@@ -258,7 +258,7 @@ public class RandomTeleport extends JavaPlugin implements RandomTeleportAPI {
 
     private void initValidators() {
         locationValidators.add(new WorldborderValidator());
-        locationValidators.add(new HeightValidator());
+        locationValidators.add(new HeightValidator(unsafeBlocks));
         locationValidators.add(new ProtectionValidator());
         locationValidators.add(new BlockValidator(safeBlocks));
     }

randomteleport-plugin/src/main/java/de/themoep/randomteleport/searcher/validators/HeightValidator.java

@@ -20,13 +20,21 @@ package de.themoep.randomteleport.searcher.validators;
 
 import de.themoep.randomteleport.searcher.RandomSearcher;
 import org.bukkit.Location;
+import org.bukkit.Material;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
 
+import java.util.Collections;
+import java.util.EnumSet;
+
 public class HeightValidator extends LocationValidator {
 
-    public HeightValidator() {
+    private final EnumSet<Material> unsafeBlocks;
+
+    public HeightValidator(Material[] unsafeBlocks) {
         super("height");
+        this.unsafeBlocks = EnumSet.noneOf(Material.class);
+        Collections.addAll(this.unsafeBlocks, unsafeBlocks);
     }
 
     @Override
@@ -49,7 +57,7 @@ public class HeightValidator extends LocationValidator {
         return isSafe(block.getRelative(BlockFace.UP)) && isSafe(block.getRelative(BlockFace.UP, 2));
     }
 
-    private static boolean isSafe(Block block) {
-        return block.isPassable() && !block.isLiquid();
+    private boolean isSafe(Block block) {
+        return block.isPassable() && !block.isLiquid() && !unsafeBlocks.contains(block.getType());
     }
 }

randomteleport-plugin/src/main/resources/config.yml

@@ -21,7 +21,7 @@ safe-blocks:
 - end_stone
 - netherrack
 
-# Blocks unsafe when in "--force blocks" mode
+# Blocks not to teleport on or into
 unsafe-blocks:
 - air
 - water
@@ -96,6 +96,7 @@ unsafe-blocks:
 - dark_oak_door
 - end_rod
 - end_gateway
+- powder_snow
 
 sign-variables:
 - "[RTP]"