201 lines
7.0 KiB
Lua
201 lines
7.0 KiB
Lua
local TIMER_DURATION_SHORT = 1.0
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local TIMER_DURATION_LONG = 3.0
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local META_DEMANDER_LISTNAME = "demtarlist"
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local META_SUPPLIER_LISTNAME = "suptarlist"
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local TARGET_NODES_REQUIRING_TIMER = {}
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TARGET_NODES_REQUIRING_TIMER["default:furnace"] = true
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TARGET_NODES_REQUIRING_TIMER["gravelsieve:auto_sieve3"] = true
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local function get_meta(pos)
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logistica.load_position(pos)
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return minetest.get_meta(pos)
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end
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local function get_max_rate_for_demander(pos)
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local node = minetest.get_node_or_nil(pos)
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if not node then return 0 end
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local nodeDef = minetest.registered_nodes[node.name]
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if nodeDef and nodeDef.logistica and nodeDef.logistica.demander_transfer_rate then
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if nodeDef.logistica.demander_transfer_rate <= 0 then return 9999
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else return nodeDef.logistica.demander_transfer_rate end
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else
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return 0
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end
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end
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local function get_valid_demander_and_target_inventory(demanderPos)
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local meta = get_meta(demanderPos)
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local targetList = meta:get_string(META_DEMANDER_LISTNAME)
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if not targetList then return end
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local targetPos = logistica.get_demander_target(demanderPos)
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if not targetPos then return end
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-- exclude logistica nodes from this
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if string.find(minetest.get_node(targetPos).name, "logistica:") then return end
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local targetInv = get_meta(targetPos):get_inventory()
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if not targetInv:get_list(targetList) then return end
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return {
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demanderPos = demanderPos,
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demanderInventory = meta:get_inventory(),
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targetInventory = targetInv,
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targetList = targetList,
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targetPos = targetPos,
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}
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end
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local function get_actual_demand_for_item(demandStack, invs)
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local storageList = invs.targetInventory:get_list(invs.targetList)
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local remaining = demandStack:get_count()
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for i,_ in ipairs(storageList) do
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local stored = storageList[i]
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if demandStack:get_name() == stored:get_name() then
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remaining = remaining - stored:get_count()
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end
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if remaining <= 0 then return ItemStack("") end
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end
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if remaining > 0 then
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local missingStack = ItemStack(demandStack)
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missingStack:set_count(remaining)
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return missingStack
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else
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return ItemStack("")
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end
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end
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-- returns:
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-- nil: nothing in inventory?
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-- 0: no item has demand
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-- ItemStack: the next demanded item
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local function get_next_demanded_stack(pos)
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local inventories = get_valid_demander_and_target_inventory(pos)
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if not inventories then return nil end
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local demandStack = nil
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local nextSlot = logistica.get_next_filled_item_slot(get_meta(pos), "filter")
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local startingSlot = nextSlot
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repeat
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if nextSlot <= 0 then return nil end
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local filterStack = inventories.demanderInventory:get_list("filter")[nextSlot]
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demandStack = get_actual_demand_for_item(filterStack, inventories)
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if demandStack:get_count() > 0 then return demandStack end
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nextSlot = logistica.get_next_filled_item_slot(get_meta(pos), "filter")
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until( nextSlot == startingSlot ) -- until we get back to the starting slot
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return 0 -- we had filled slots, but none had demand
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end
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local function take_demanded_items_from_network(pos, network)
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local demandStack = get_next_demanded_stack(pos)
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if demandStack == nil then return false end
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if demandStack == 0 then return true end -- had items but nothing in demand
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-- limiting the number of items requested
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demandStack:set_count(math.min(get_max_rate_for_demander(pos), demandStack:get_count()))
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local collect = function(st) return logistica.insert_itemstack_for_demander(pos, st) end
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logistica.take_stack_from_network(demandStack, network, collect)
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return true
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end
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----------------------------------------------------------------
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-- Storage operation functions
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----------------------------------------------------------------
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function logistica.start_demander_timer(pos, duration)
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if duration == nil then duration = TIMER_DURATION_SHORT end
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logistica.start_node_timer(pos, duration)
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logistica.set_node_on_off_state(pos, true)
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end
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function logistica.on_demander_timer(pos, elapsed)
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local network = logistica.get_network_or_nil(pos)
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if not network or not logistica.is_machine_on(pos) then
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logistica.set_node_on_off_state(pos, false)
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return false
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end
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if take_demanded_items_from_network(pos, network) then return true
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else return false end
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end
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function logistica.set_demander_target_list(pos, listName)
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local meta = get_meta(pos)
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meta:set_string(META_DEMANDER_LISTNAME, listName)
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end
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function logistica.get_demander_target_list(pos)
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local meta = get_meta(pos)
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return meta:get_string(META_DEMANDER_LISTNAME)
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end
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function logistica.set_supplier_target_list(pos, listName)
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local meta = get_meta(pos)
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meta:set_string(META_SUPPLIER_LISTNAME, listName)
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end
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function logistica.get_supplier_target_list(pos)
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local meta = get_meta(pos)
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return meta:get_string(META_SUPPLIER_LISTNAME)
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end
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-- function logistica.update_demander_demand(demanderPos)
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-- local meta = get_meta(demanderPos)
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-- local inventories = get_valid_demander_and_target_inventory(demanderPos)
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-- if not inventories then return end
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-- local demandList = logistica.get_demand_based_on_list(
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-- inventories.demanderInventory, "filter",
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-- inventories.targetInventory, inventories.targetList
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-- )
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-- end
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-- returns a list of ItemStacks tha represent the current demand of this demander
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function logistica.get_demander_demand(pos)
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local inv = get_meta(pos):get_inventory()
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local list = inv:get_list("filter")
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if not list then return {} end
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local ret = {}
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for k, v in list do
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ret[k] = ItemStack(v)
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end
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return ret
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end
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-- returns the demander's target position or nil if the demander isn't loaded
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function logistica.get_demander_target(pos)
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local node = minetest.get_node_or_nil(pos)
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if not node then return nil end
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local shift = logistica.get_rot_directions(node.param2).backward
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if not shift then return nil end
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return {x = (pos.x + shift.x),
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y = (pos.y + shift.y),
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z = (pos.z + shift.z)}
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end
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function logistica.get_supplier_target(pos)
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local node = minetest.get_node_or_nil(pos)
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if not node then return nil end
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local shift = logistica.get_rot_directions(node.param2).backward
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if not shift then return nil end
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return {x = (pos.x + shift.x),
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y = (pos.y + shift.y),
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z = (pos.z + shift.z)}
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end
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-- returns how many items remain from the itemstack after we attempt to insert it
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-- `targetInventory` and `targetList` are optional (tied together), if not passed, it will be looked up
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function logistica.insert_itemstack_for_demander(demanderPos, itemstack)
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if not itemstack or itemstack:is_empty() then return 0 end
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local inventories = get_valid_demander_and_target_inventory(demanderPos)
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if not inventories then return itemstack:get_count() end
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local targetInventory = inventories.targetInventory
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local targetList = inventories.targetList
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local leftover = targetInventory:add_item(targetList, itemstack)
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local targetNode = minetest.get_node(inventories.targetPos)
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if leftover:get_count() < itemstack:get_count() and TARGET_NODES_REQUIRING_TIMER[targetNode.name] then
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logistica.start_node_timer(inventories.targetPos, 1)
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end
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return leftover:get_count()
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end
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