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skycraft.last_trade_id = 0
skycraft.player_trades = {}
skycraft.trade = {}
skycraft.trade.__index = skycraft.trade
function skycraft.trade:new(name1, name2)
local o = {}
setmetatable(o, self)
o:start(name1, name2)
return o
end
function skycraft.trade:start(name1, name2)
skycraft.player_trades[name1] = self
skycraft.player_trades[name2] = self
self.players = {{name = name1, status = 1}, {name = name2, status = 1}}
self.id = skycraft.last_trade_id + 1
skycraft.last_trade_id = self.id
self.inventory = minetest.create_detached_inventory(self:get_inventory_name(), {
allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
local name = player:get_player_name()
return (self:allow_access(from_list, name) and self:allow_access(to_list, name)) and count or 0
end,
allow_put = function(inv, listname, index, stack, player) return (self:allow_access(listname, player:get_player_name())) and stack:get_count() or 0 end,
allow_take = function(inv, listname, index, stack, player) return (self:allow_access(listname, player:get_player_name())) and stack:get_count() or 0 end,
})
self.inventory:set_size("1", 12)
self.inventory:set_size("2", 12)
self:update_formspec()
end
function skycraft.trade:allow_access(list, name)
for i, p in pairs(self.players) do
if p.name == name and tonumber(list) == i and p.status == 1 then return true end
end
return false
end
function skycraft.trade:get_inventory_name()
return "trade_" .. tostring(self.id)
end
function skycraft.trade:update_formspec()
local invname = "detached:" .. self:get_inventory_name()
local formspec = "size[10,9]list[current_player;main;1,5;8,4;]" .. mcl_formspec.get_itemslot_bg(1, 5, 8, 4)
if self.canceled then
formspec = formspec
.. "label[4,3;Canceled]"
.. "button_exit[3,4;3,1;exit;Exit]"
elseif self.successfull then
formspec = formspec
.. "label[4,3;Successfull]"
.. "button_exit[3,4;3,1;exit;Exit]"
else
local status_buttons = {"Confirm", "Exchange"}
for i, p in pairs(self.players) do
local x = tostring(3 + (i - 1) * 2)
formspec = formspec
.. "list[" .. invname .. ";" .. tostring(i) .. ";" .. tostring((i - 1) * 7) .. ",0;3,4;]"
.. mcl_formspec.get_itemslot_bg((i - 1) * 7, 0, 3, 4)
.. "label[" .. x .. ",0;" .. p.name .. "]"
.. "button[" .. x .. ",2;2,1;cancel_" .. tostring(i) .. ";" .. "Cancel" .. "]"
if status_buttons[p.status] then
formspec = formspec
.. "button[" .. x .. ",1;2,1;accept_" .. tostring(i) .. ";" .. status_buttons[p.status] .. "]"
end
end
end
for _, p in pairs(self.players) do
minetest.show_formspec(p.name, "skycraft:trade", formspec)
end
end
function skycraft.trade:give_inventory(name, list)
local player = minetest.get_player_by_name(name)
if not player then return end
local inventory = player:get_inventory()
local list_ref = self.inventory:get_list(list)
for _, itemstack in pairs(list_ref) do
inventory:add_item("main", itemstack)
self.inventory:remove_item(list, itemstack)
end
end
function skycraft.trade:cancel()
for i, p in pairs(self.players) do
self:give_inventory( p.name, tostring(i))
skycraft.player_trades[p.name] = nil
end
self.canceled = true
end
function skycraft.trade:success()
local list = {"2", "1"}
for i, p in pairs(self.players) do
self:give_inventory(p.name, list[i])
skycraft.player_trades[p.name] = nil
end
self.successfull = true
end
function skycraft.trade:click_button(name, button)
if button == "quit" then return self:cancel() end
local action = button:split("_")[1]
local num = tonumber(button:split("_")[2])
for i, p in pairs(self.players) do
if name == p.name and num == i then
if action == "accept" then
p.status = p.status + 1
elseif action == "cancel" then
self:cancel()
end
break
end
end
local success = true
for _, p in pairs(self.players) do
if p.status < 3 then
success = false
break
end
end
if success then self:success() end
self:update_formspec()
end
minetest.register_on_leaveplayer(function(player)
local t = skycraft.player_trades[player:get_player_name()]
if t then t:cancel() end
end)
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname == "skycraft:trade" then
local name = player:get_player_name()
local t = skycraft.player_trades[name]
if not t then return end
for field, _ in pairs(fields) do
t:click_button(name, field)
end
end
end)
skycraft.register_request_system("trade", "trade", "trading", "with", function(name1, name2)
skycraft.trade:new(name1, name2)
end)
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