Improve mapgen, add grass, and include the fill tool.

mods/rgt_workbench/init.lua

@@ -0,0 +1,30 @@
+local ns = rgt
+
+
+rgt.register_node("workbench", {
+    on_construct = function()
+        
+    end,
+    on_rightclick = function(pos, node, p)
+        local name = p:get_player_name()
+        local fs = {
+            "formspec_version[10]\
+            size[12,11]\
+            ",
+            ui.list("current_player", "main", 1.125, 5.5, 8, 4),
+            ui.list("current_player", "craft", 2, 1, 3, 3),
+            "listring[]\n",
+            ui.list("current_player", "craftpreview", 6, 2.1, 1, 1)
+        }
+        rgt.players[name].inv:set_craft_grid_size(3)
+        minetest.show_formspec(name, "workbench", table.concat(fs))
+    end
+})
+
+
+minetest.register_on_player_receive_fields(function(p, form, data)
+    if form == "workbench" and data.quit then
+        local name = p:get_player_name()
+        rgt.players[name].inv:set_craft_grid_size(2)
+    end
+end)