added center to config.js, lets you set map center in world coords

By default, it is set to spawn. Also I changed defaultZoom to 2, which
looks better (the world used to show up as *tiny* by default).

config.js

@@ -2,8 +2,11 @@
   var config = {
     fileExt:     '{imgformat}',
     tileSize:     384,
-    defaultZoom:  1,
+    defaultZoom:  2,
     maxZoom:      {maxzoom},
+    // center on this point, in world coordinates, ex:
+    //center:       [0,0,0],
+    center:       {spawn_coords},
     cacheMinutes: 0, // Change this to have browsers automatically request new images every x minutes
     bg_color:     '#1A1A1A',
     debug:        false

googlemap.py

@@ -94,6 +94,9 @@ class MapGen(object):
         config = config.replace(
                 "{imgformat}", str(imgformat))
         
+        config = config.replace("{spawn_coords}",
+                                json.dumps(list(self.world.spawn)))
+        
         # create generated map type data, from given quadtrees
         maptypedata = map(lambda q: {'label' : q.rendermode.capitalize(),
                                      'path' : q.tiledir}, self.quadtrees)

web_assets/functions.js

@@ -256,8 +256,12 @@ function initialize() {
 
     var query = location.search.substring(1);
 
-    var lat = 0.5;
-    var lng = 0.5;
+    var defaultCenter = fromWorldToLatLng(config.center[0],
+                                          config.center[1],
+                                          config.center[2]);
+    var lat = defaultCenter.lat();
+    var lng = defaultCenter.lng();
+    
     var zoom = config.defaultZoom;
     var pairs = query.split("&");
     for (var i=0; i<pairs.length; i++) {

world.py

@@ -226,6 +226,7 @@ class World(object):
 
         self.POI.append( dict(x=spawnX, y=spawnY, z=spawnZ, 
                 msg="Spawn", type="spawn", chunk=(inChunkX,inChunkZ)))
+        self.spawn = (spawnX, spawnY, spawnZ)
 
     def go(self, procs):
         """Scan the world directory, to fill in