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

mods/rgt_player/init.lua

@@ -9,8 +9,6 @@ Player = {
             object = p
         }, {__index = Player})
         
-        local inv = p:get_inventory()
-        inv:set_size("hand", 1)
         m:set_hotbar_size(8)
         
         m.textures = {_textures = {}}
@@ -431,6 +429,16 @@ Player = {
         m:dispatch("deinit")
         m.health_display:remove()
         m.wielditem_display:remove()
+        
+        -- Unwield the wielded item. This ensures that if wielding an item creates side effects
+        -- (e.g. temporary entities while wielded), those side effects will not remain in effect
+        -- when the player leaves the game.
+        local w = m.object:get_wielded_item()
+        local wname = w:get_name()
+        local def = minetest.registered_items[wname]
+        local onunselect = def and def.on_unwield
+        if onunselect then onunselect(m) end
+        
         rgt.players[m.name] = nil
     end
 }