added automatic village generation(via biome decorations)

mods/default/mapgen.lua

@@ -238,7 +238,7 @@ minetest.register_biome(
       node_underwater = "default:dirt",
       node_shore_top = "default:sand",
       node_shore_filler = "default:sandstone",      	height_shore = 0,
-      y_min = 0,					y_max = 500,
+      y_min = 0,					y_max = 200,
       heat_point = 35,			        humidity_point = 40,
    })
 

mods/village/mapgen.lua

@@ -5,7 +5,7 @@ minetest.register_node(
       tiles = {"default_brick.png^default_book.png"},
       is_ground_content = false,
       groups = {dig_immediate = 2},
-      sounds = default.node_sound_wood_defaults({})
+      sounds = default.node_sound_wood_defaults()
    })
 
 minetest.register_node(
@@ -15,34 +15,47 @@ minetest.register_node(
       tiles = {"default_grass.png^default_book.png"},
       is_ground_content = false,
       groups = {dig_immediate = 2},
-      sounds = default.node_sound_wood_defaults({})
+      sounds = default.node_sound_wood_defaults()
    })
 
 minetest.register_node(
-   "village:desert_village",
+   "village:grassland_village_mg",
    {
-      description = "Spawns a village at this block when placed",
-      tiles = {"default_sand.png^default_book.png"},
+      description = "Mapgen village spawner(Has chance of not spawning village)",
+      tiles = {"default_grass.png^default_book.png"},
       is_ground_content = false,
       groups = {dig_immediate = 2},
-      sounds = default.node_sound_wood_defaults({})
+      sounds = default.node_sound_wood_defaults()
    })
 
-minetest.register_alias("village", "village:grassland_village")
-
 minetest.register_abm(
    {
-      nodenames = {"village:grassland_village"},
+      nodenames = {"village:grassland_village", "village:grassland_village_mg"},
       interval = 1,
       chance = 1,
       action = function(pos, node)
-		  print("Spawning a Grassland village at "..dump(pos))
 		  minetest.remove_node(pos)
-		  village.spawn_village(pos, PseudoRandom(minetest.get_mapgen_params().seed+pos.x+pos.y+pos.z))
+		  local pr = PseudoRandom(minetest.get_mapgen_params().seed+pos.x+pos.y+pos.z)
+		  if node.name  == "village:grassland_village_mg" then
+		     if pr:next(1, 100) == 1 then
+			print("Spawning a (Mapgen)Grassland village at "..dump(pos))
+			village.spawn_village(pos, pr)
+		     end
+		  else
+		     print("Spawning a Grassland village at "..dump(pos))
+		     village.spawn_village(pos, pr)
+		  end
 	       end
    })
 
-minetest.register_on_generated(
-   function(minp, maxp, seed)
-      
-   end)
+minetest.register_decoration(
+   {
+      deco_type = "simple",
+      place_on = "default:dirt_with_grass",
+      sidelen = 16,
+      fill_ratio = 0.005,
+      biomes = {"Grassland", "Forest"},
+      decoration = {"village:grassland_village_mg"},
+      y_min = 1,
+      y_max = 1000,
+   })