File: shop.lua

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minetest-mod-currency 20200603.1302-1
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local S = minetest.get_translator("currency")

default.shop = {}
default.shop.current_shop = {}
default.shop.formspec = {
	customer = function(pos)
		local list_name = "nodemeta:"..pos.x..','..pos.y..','..pos.z
		local formspec = "size[8,9.5]"..
		"label[0,0;" .. S("Customer gives (pay here!)") .. "]"..
		"list[current_player;customer_gives;0,0.5;3,2;]"..
		"label[0,2.5;" .. S("Customer gets:") .. "]"..
		"list[current_player;customer_gets;0,3;3,2;]"..
		"label[5,0;" .. S("Owner wants:") .. "]"..
		"list["..list_name..";owner_wants;5,0.5;3,2;]"..
		"label[5,2.5;" .. S("Owner gives:") .. "]"..
		"list["..list_name..";owner_gives;5,3;3,2;]"..
		"list[current_player;main;0,5.5;8,4;]"..
		"button[3,2;2,1;exchange;" .. S("Exchange") .. "]"
		return formspec
	end,
	owner = function(pos)
		local list_name = "nodemeta:"..pos.x..','..pos.y..','..pos.z
		local formspec = "size[8,9.5]"..
		"label[0,0;" .. S("Customers gave:") .. "]"..
		"list["..list_name..";customers_gave;0,0.5;3,2;]"..
		"label[0,2.5;" .. S("Your stock:") .. "]"..
		"list["..list_name..";stock;0,3;3,2;]"..
		"label[4,0;" .. S("You want:") .. "]"..
		"list["..list_name..";owner_wants;4,0.5;3,2;]"..
		"label[4,2.5;" .. S("In exchange, you give:") .. "]"..
		"list["..list_name..";owner_gives;4,3;3,2;]"..
		"label[0,5;" .. S("Owner, Use (E)+Place (right mouse button) for customer interface") .. "]"..
		"list[current_player;main;0,5.5;8,4;]"
		return formspec
	end,
}

local have_pipeworks = minetest.global_exists("pipeworks")

default.shop.check_privilege = function(listname,playername,meta)
	--[[if listname == "pl1" then
		if playername ~= meta:get_string("pl1") then
			return false
		elseif meta:get_int("pl1step") ~= 1 then
			return false
		end
	end
	if listname == "pl2" then
		if playername ~= meta:get_string("pl2") then
			return false
		elseif meta:get_int("pl2step") ~= 1 then
			return false
		end
	end]]
	return true
end


default.shop.give_inventory = function(inv,list,playername)
	player = minetest.get_player_by_name(playername)
	if player then
		for k,v in ipairs(inv:get_list(list)) do
			player:get_inventory():add_item("main",v)
			inv:remove_item(list,v)
		end
	end
end

default.shop.cancel = function(meta)
	--[[default.shop.give_inventory(meta:get_inventory(),"pl1",meta:get_string("pl1"))
	default.shop.give_inventory(meta:get_inventory(),"pl2",meta:get_string("pl2"))
	meta:set_string("pl1","")
	meta:set_string("pl2","")
	meta:set_int("pl1step",0)
	meta:set_int("pl2step",0)]]
end

default.shop.exchange = function(meta)
	--[[default.shop.give_inventory(meta:get_inventory(),"pl1",meta:get_string("pl2"))
	default.shop.give_inventory(meta:get_inventory(),"pl2",meta:get_string("pl1"))
	meta:set_string("pl1","")
	meta:set_string("pl2","")
	meta:set_int("pl1step",0)
	meta:set_int("pl2step",0)]]
end

minetest.register_node("currency:shop", {
	description = S("Shop"),
	paramtype2 = "facedir",
	tiles = {"shop_top.png",
			"shop_top.png",
			"shop_side.png",
			"shop_side.png",
			"shop_side.png",
			"shop_front.png"},
	inventory_image = "shop_front.png",
	groups = {choppy=2,oddly_breakable_by_hand=2,tubedevice=1,tubedevice_receiver=1},
	sounds = default.node_sound_wood_defaults(),
	after_place_node = function(pos, placer, itemstack)
		local owner = placer:get_player_name()
		local meta = minetest.get_meta(pos)
		meta:set_string("infotext", S("Exchange shop (owned by @1)", owner))
		meta:set_string("owner", owner)
		--[[meta:set_string("pl1","")
		meta:set_string("pl2","")]]
		local inv = meta:get_inventory()
		inv:set_size("customers_gave", 3*2)
		inv:set_size("stock", 3*2)
		inv:set_size("owner_wants", 3*2)
		inv:set_size("owner_gives", 3*2)
		if have_pipeworks then pipeworks.after_place(pos) end
	end,
	after_dig_node = (have_pipeworks and pipeworks and pipeworks.after_dig),
	tube = {
		insert_object = function(pos, node, stack, direction)
			local meta = minetest.get_meta(pos)
			local inv = meta:get_inventory()
			return inv:add_item("stock",stack)
		end,
		can_insert = function(pos,node,stack,direction)
			local meta = minetest.get_meta(pos)
			local inv = meta:get_inventory()
			return inv:room_for_item("stock", stack)
		end,
		input_inventory = "customers_gave",
		connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1, top = 1}
	},
	on_rightclick = function(pos, node, clicker, itemstack)
		clicker:get_inventory():set_size("customer_gives", 3*2)
		clicker:get_inventory():set_size("customer_gets", 3*2)
		default.shop.current_shop[clicker:get_player_name()] = pos
		local meta = minetest.get_meta(pos)
		if clicker:get_player_name() == meta:get_string("owner") and not clicker:get_player_control().aux1 then
			minetest.show_formspec(clicker:get_player_name(),"currency:shop_formspec",default.shop.formspec.owner(pos))
		else
			minetest.show_formspec(clicker:get_player_name(),"currency:shop_formspec",default.shop.formspec.customer(pos))
		end
	end,
	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
		local meta = minetest.get_meta(pos)
		if player:get_player_name() ~= meta:get_string("owner") then return 0 end
		return count
	end,
	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
		local meta = minetest.get_meta(pos)
		if player:get_player_name() ~= meta:get_string("owner") then return 0 end
		return stack:get_count()
	end,
	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
		local meta = minetest.get_meta(pos)
		if player:get_player_name() ~= meta:get_string("owner") then return 0 end
		return stack:get_count()
	end,
	can_dig = function(pos, player)
		local meta = minetest.get_meta(pos)
		local inv = meta:get_inventory()
		return inv:is_empty("stock") and inv:is_empty("customers_gave") and inv:is_empty("owner_wants") and inv:is_empty("owner_gives")
	end
})

minetest.register_on_player_receive_fields(function(sender, formname, fields)
	if formname == "currency:shop_formspec" and fields.exchange ~= nil and fields.exchange ~= "" then
		local name = sender:get_player_name()
		local pos = default.shop.current_shop[name]
		local meta = minetest.get_meta(pos)
		if meta:get_string("owner") == name then
			minetest.chat_send_player(name, S("This is your own shop, you can't exchange to yourself!"))
		else
			local minv = meta:get_inventory()
			local pinv = sender:get_inventory()
			local invlist_tostring = function(invlist)
				local out = {}
				for i, item in pairs(invlist) do
					out[i] = item:to_string()
				end
				return out
			end
			local wants = minv:get_list("owner_wants")
			local gives = minv:get_list("owner_gives")
			if wants == nil or gives == nil then return end -- do not crash the server
			-- Check if we can exchange
			local can_exchange = true
			local owners_fault = false
			for i, item in pairs(wants) do
				if not pinv:contains_item("customer_gives",item) then
					can_exchange = false
				end
			end
			for i, item in pairs(gives) do
				if not minv:contains_item("stock",item) then
					can_exchange = false
					owners_fault = true
				end
			end
			if can_exchange then
				for i, item in pairs(wants) do
					pinv:remove_item("customer_gives",item)
					minv:add_item("customers_gave",item)
				end
				for i, item in pairs(gives) do
					minv:remove_item("stock",item)
					pinv:add_item("customer_gets",item)
				end
				minetest.chat_send_player(name, S("Exchanged!"))
			else
				if owners_fault then
					minetest.chat_send_player(name, S("Exchange can not be done, contact the shop owner."))
				else
					minetest.chat_send_player(name, S("Exchange can not be done, check if you put all items!"))
				end
			end
		end
	end
end)