Completed partial refactor.

src/engine/objects/Zone.java

@@ -58,6 +58,7 @@ public class Zone extends AbstractGameObject {
     public String hash;
     public float worldAltitude = 0;
     public float seaLevel = 0f;
+    public float sea_level_offset = 0;
     public static final Set<Mob> respawnQue = Collections.newSetFromMap(new ConcurrentHashMap<>());
     public static long lastRespawn = 0;
     public float major_radius;
@@ -224,21 +225,29 @@ public class Zone extends AbstractGameObject {
         this.setBounds();
         this.worldAltitude = ZoneManager.caclulateWorldAltitude(this);
 
+        setSeaLevel();
+    }
+
+    private void setSeaLevel() {
+
+        int world_sea_level = 0;
+
         if (this.parent == null) {
-            this.seaLevel = MBServerStatics.SEA_FLOOR_ALTITUDE;
+            this.sea_level = world_sea_level;
             return;
         }
 
-        if (this.getHeightMap() == null) {
-            this.seaLevel = this.parent.seaLevel;
-            return;
+        switch (this.sea_level_type) {
+            case "WORLD":
+                this.sea_level = world_sea_level + this.sea_level_offset;
+                break;
+            case "PARENT":
+                this.sea_level = this.parent.sea_level + this.sea_level_offset;
+                break;
+            case "SELF":
+                this.sea_level = this.worldAltitude + this.sea_level_offset;
+                break;
         }
-
-        if (this.getHeightMap().seaLevel != 0)
-            this.seaLevel = this.worldAltitude + this.getHeightMap().seaLevel;
-        else
-            this.seaLevel = this.parent.seaLevel;
-
     }
 
     public boolean isMacroZone() {
@@ -315,12 +324,4 @@ public class Zone extends AbstractGameObject {
 
     // Return heightmap for this Zone.
 
-    public Terrain getHeightMap() {
-
-        if (this.guild_zone)
-            return Terrain.playerCityTerrain;
-
-        return Terrain.heightmapByLoadNum.get(this.template);
-    }
-
 }