src/onload/shop_signs.lua

   1 for nodename, nodedef in pairs(minetest.registered_nodes) do
   2         if nodename:find("mcl_signs:") then
   3                 minetest.override_item(nodename, {
   4                         on_rightclick = function(pos, node, player, itemstack, pointed_thing)
   5                                 if pos.y < 5000 then return end
   6                                 local text = minetest.get_meta(pos):get_string("text") or ""
   7                                 local lines = text:split("\n")
   8                                 local action, amount, price = lines[1], lines[2], lines[3]
   9                                 if not (action and amount and price) then return end
  10                                 price = string.gsub(price, "%$", "")
  11                                 price = tonumber(price)
  12                                 amount = string.gsub(amount, "x", "")
  13                                 amount = tonumber(amount)
  14                                 if not (amount and price) then return end
  15                                 local func, frameoffset
  16                                 if action == "Buy" then
  17                                         func, frameoffset = skycraft.buy, -1
  18                                 elseif action == "Sell" then
  19                                         func, frameoffset = skycraft.sell, 1
  20                                 else
  21                                         return
  22                                 end
  23                                 local framepos = vector.add(pos, {x = 0, y = frameoffset, z = 0})
  24                                 if minetest.get_node(framepos).name ~= "mcl_itemframes:item_frame" then return end
  25                                 local inv = minetest.get_meta(framepos):get_inventory()
  26                                 if inv:is_empty("main") then return end
  27                                 local itemstack = inv:get_stack("main", 1)
  28                                 func(player, itemstack:get_name() .. " " .. tostring(amount), price)
  29                                 return player:get_wielded_item()
  30                         end,
  31                 })
  32         end
  33 end
  34