Fixed rendering of new height and depth limit in 1.18

overviewer_core/world.py

@@ -200,8 +200,8 @@ class World(object):
         ## clamp spawnY to a sane value, in-chunk value
         if spawnY < 0:
             spawnY = 0
-        if spawnY > 255:
-            spawnY = 255
+        if spawnY > 319:
+            spawnY = 319
             
         ## The chunk that holds the spawn location
         chunkX = spawnX//16
@@ -236,7 +236,7 @@ class World(object):
                 spawnY += 1
             # Next section, start at local 0
             inChunkY = 0
-        return spawnX, 256, spawnZ
+        return spawnX, 320, spawnZ
 
 class RegionSet(object):
     """This object is the gateway to a particular Minecraft dimension within a