Biome clean up & fixes

Change BiomeType to an interface.
Do not longer use invalid biomes of Bukkit Biome enum.
Add a common unknown biome type.

src/main/java/com/sk89q/worldedit/BiomeType.java

@@ -1,43 +1,17 @@
 package com.sk89q.worldedit;
 
-public class BiomeType {
+public interface BiomeType {
 
-    private String name;
-
-    public BiomeType(String name) {
-        this.name = name;
-    }
+    public static final BiomeType UNKNOWN = new BiomeType() {
+        public String getName() {
+            return "Unknown";
+        }
+    };
 
     /**
-     * Get the name of the player.
+     * Get the name of this biome type.
      *
      * @return String
      */
-    public String getName() {
-        return name;
-    }
-
-    /**
-     * Gets the hash code.
-     *
-     * @return hash code
-     */
-    @Override
-    public int hashCode() {
-        return name.hashCode();
-    }
-
-    /**
-     * Returns true if equal.
-     *
-     * @param other
-     * @return whether the other object is equivalent
-     */
-    @Override
-    public boolean equals(Object obj) {
-        if (obj instanceof BiomeType) {
-            return ((BiomeType) obj).name.equals(name);
-        }
-        return false;
-    }
+    public String getName();
 }

src/main/java/com/sk89q/worldedit/bukkit/BukkitBiomeType.java

@@ -0,0 +1,49 @@
+package com.sk89q.worldedit.bukkit;
+
+import java.util.Locale;
+
+import org.bukkit.block.Biome;
+
+import com.sk89q.worldedit.BiomeType;
+
+public enum BukkitBiomeType implements BiomeType {
+
+    SWAMPLAND(Biome.SWAMPLAND),
+    FOREST(Biome.FOREST),
+    TAIGA(Biome.TAIGA),
+    DESERT(Biome.DESERT),
+    PLAINS(Biome.PLAINS),
+    HELL(Biome.HELL),
+    SKY(Biome.SKY),
+    RIVER(Biome.RIVER),
+    EXTREME_HILLS(Biome.EXTREME_HILLS),
+    OCEAN(Biome.OCEAN),
+    FROZEN_OCEAN(Biome.FROZEN_OCEAN),
+    FROZEN_RIVER(Biome.FROZEN_RIVER),
+    ICE_PLAINS(Biome.ICE_PLAINS),
+    ICE_MOUNTAINS(Biome.ICE_MOUNTAINS),
+    MUSHROOM_ISLAND(Biome.MUSHROOM_ISLAND),
+    MUSHROOM_SHORE(Biome.MUSHROOM_SHORE),
+    BEACH(Biome.BEACH),
+    DESERT_HILLS(Biome.DESERT_HILLS),
+    FOREST_HILLS(Biome.FOREST_HILLS),
+    TAIGA_HILLS(Biome.TAIGA_HILLS),
+    SMALL_MOUNTAINS(Biome.SMALL_MOUNTAINS),
+    JUNGLE(Biome.JUNGLE),
+    JUNGLE_HILLS(Biome.JUNGLE_HILLS);
+
+    private Biome bukkitBiome;
+
+    private BukkitBiomeType(Biome biome) {
+        this.bukkitBiome = biome;
+    }
+
+    @Override
+    public String getName() {
+        return name().toLowerCase(Locale.ENGLISH);
+    }
+
+    public Biome getBukkitBiome() {
+        return bukkitBiome;
+    }
+}

src/main/java/com/sk89q/worldedit/bukkit/BukkitBiomeTypes.java

@@ -1,11 +1,9 @@
 package com.sk89q.worldedit.bukkit;
 
-import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;
 
-import org.bukkit.block.Biome;
-
 import com.sk89q.worldedit.BiomeType;
 import com.sk89q.worldedit.BiomeTypes;
 import com.sk89q.worldedit.UnknownBiomeTypeException;
@@ -18,7 +16,7 @@ public class BukkitBiomeTypes implements BiomeTypes {
     @Override
     public boolean has(String name) {
         try {
-            Biome.valueOf(name.toUpperCase(Locale.ENGLISH));
+            BukkitBiomeType.valueOf(name.toUpperCase(Locale.ENGLISH));
             return true;
         } catch (IllegalArgumentException exc) {
             return false;
@@ -28,8 +26,7 @@ public class BukkitBiomeTypes implements BiomeTypes {
     @Override
     public BiomeType get(String name) throws UnknownBiomeTypeException {
         try {
-            Biome biome = Biome.valueOf(name.toUpperCase(Locale.ENGLISH));
-            return new BiomeType(biome.name());
+            return BukkitBiomeType.valueOf(name.toUpperCase(Locale.ENGLISH));
         } catch (IllegalArgumentException exc) {
             throw new UnknownBiomeTypeException(name);
         }
@@ -37,11 +34,7 @@ public class BukkitBiomeTypes implements BiomeTypes {
 
     @Override
     public List<BiomeType> all() {
-        List<BiomeType> biomes = new ArrayList<BiomeType>();
-        for (Biome biome : Biome.values()) {
-            biomes.add(new BiomeType(biome.name()));
-        }
-        return biomes;
+        return Arrays.<BiomeType>asList(BukkitBiomeType.values());
     }
 
 }

src/main/java/com/sk89q/worldedit/bukkit/BukkitWorld.java

@@ -214,18 +214,20 @@ public class BukkitWorld extends LocalWorld {
      */
     public BiomeType getBiome(Vector2D pt) {
         Biome bukkitBiome = world.getBiome(pt.getBlockX(), pt.getBlockZ());
-        return new BiomeType(bukkitBiome.name());
+        try {
+            return BukkitBiomeType.valueOf(bukkitBiome.name());
+        } catch (IllegalArgumentException exc) {
+            return BiomeType.UNKNOWN;
+        }
     }
 
     @Override
     public void setBiome(Vector2D pt, BiomeType biome) {
-        Biome bukkitBiome;
-        try {
-            bukkitBiome = Biome.valueOf(biome.getName().toUpperCase());
-        } catch (IllegalArgumentException e) {
-            return;
+        if (biome instanceof BukkitBiomeType) {
+            Biome bukkitBiome;
+            bukkitBiome = ((BukkitBiomeType) biome).getBukkitBiome();
+            world.setBiome(pt.getBlockX(), pt.getBlockZ(), bukkitBiome);
         }
-        world.setBiome(pt.getBlockX(), pt.getBlockZ(), bukkitBiome);
     }
 
     /**

src/main/java/com/sk89q/worldedit/spout/SpoutBiomeType.java

@@ -23,14 +23,18 @@ import org.spout.api.generator.biome.BiomeType;
 /**
  * @author zml2008
  */
-public class SpoutBiomeType extends com.sk89q.worldedit.BiomeType {
+public class SpoutBiomeType implements com.sk89q.worldedit.BiomeType {
     private final BiomeType type;
 
     public SpoutBiomeType(BiomeType type) {
-        super(type.getName().toLowerCase().replace(" ", ""));
         this.type = type;
     }
 
+    @Override
+    public String getName() {
+        return type.getName().toLowerCase().replace(" ", "");
+    }
+
     public BiomeType getSpoutBiome() {
         return type;
     }

src/main/java/com/sk89q/worldedit/spout/SpoutWorld.java

@@ -206,11 +206,12 @@ public class SpoutWorld extends LocalWorld {
             BiomeGenerator gen = (BiomeGenerator) world.getGenerator();
             return new SpoutBiomeType(gen.getBiome(pt.getBlockX(), pt.getBlockZ(), world.getSeed()));
         }
-        return new BiomeType("Unknown");
+        return BiomeType.UNKNOWN;
     }
 
     public void setBiome(Vector2D pt, BiomeType biome) {
-        if (world.getGenerator() instanceof BiomeGenerator) {
+        if (biome instanceof SpoutBiomeType && 
+                world.getGenerator() instanceof BiomeGenerator) {
             BiomeGenerator gen = (BiomeGenerator) world.getGenerator();
             gen.setBiome(new Vector3(pt.getBlockX(), 0, pt.getBlockZ()), ((SpoutBiomeType) biome).getSpoutBiome());
         }