mirror of
https://github.com/sirrobzeroone/elepower.git
synced 2024-09-12 07:38:29 +02:00
214 lines
5.9 KiB
Lua
214 lines
5.9 KiB
Lua
-- Network graphs are built eminating from provider nodes.
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-- TODO: Caching
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---------------------
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-- Graph Functions --
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---------------------
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local function clear_networks_from_node(pos)
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local meta = minetest.get_meta(pos)
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meta:set_string("network_id", "")
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end
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local function add_node(nodes, pos, pnodeid)
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local node_id = minetest.hash_node_position(pos)
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if nodes[node_id] then
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return false
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end
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nodes[node_id] = pos
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return true
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end
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local function add_duct_node(nodes, pos, pnodeid, queue)
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if add_node(nodes, pos, pnodeid) then
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queue[#queue + 1] = pos
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end
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end
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local function check_node(targets, all_nodes, pos, p_pos, pnodeid, queue)
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ele.helpers.get_or_load_node(pos)
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local node = minetest.get_node(pos)
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local meta = minetest.get_meta(pos)
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local ndef = minetest.registered_nodes[node.name]
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if ele.helpers.get_item_group(node.name, "elefluid_transport") then
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add_duct_node(all_nodes, pos, pnodeid, queue)
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return
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end
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if not ndef['node_io_can_put_liquid'] or not ndef['node_io_can_put_liquid'](pos, node, "") then
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return
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end
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add_node(targets, pos, pnodeid)
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end
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local function traverse_network(targets, all_nodes, pos, p_pos, pnodeid, queue)
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local positions = {
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{x=pos.x+1, y=pos.y, z=pos.z},
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{x=pos.x-1, y=pos.y, z=pos.z},
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{x=pos.x, y=pos.y+1, z=pos.z},
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{x=pos.x, y=pos.y-1, z=pos.z},
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{x=pos.x, y=pos.y, z=pos.z+1},
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{x=pos.x, y=pos.y, z=pos.z-1}}
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for _, cur_pos in pairs(positions) do
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check_node(targets, all_nodes, cur_pos, p_pos, pnodeid, queue)
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end
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end
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local function fluid_targets(p_pos, pos)
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local provider = minetest.get_node(p_pos)
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local pnodeid = minetest.pos_to_string(p_pos)
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local targets = {}
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local queue = {}
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local all_nodes = {}
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local node = minetest.get_node(pos)
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local ndef = minetest.registered_nodes[node.name]
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if node and ele.helpers.get_item_group(node.name, "elefluid_transport") then
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add_duct_node(all_nodes, pos, pnodeid, queue)
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elseif node and ndef['node_io_can_put_liquid'] and ndef['node_io_can_put_liquid'](pos, node, "") then
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queue = {p_pos}
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end
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while next(queue) do
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local to_visit = {}
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for _, posi in ipairs(queue) do
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traverse_network(targets, all_nodes, posi, p_pos, pnodeid, to_visit)
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end
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queue = to_visit
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end
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targets = ele.helpers.flatten(targets)
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all_nodes = ele.helpers.flatten(all_nodes)
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return targets
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end
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function elefluid.transfer_timer_tick(pos, elapsed)
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local refresh = true
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local node = minetest.get_node_or_nil(pos)
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if not node then
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return false
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end
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local meta = minetest.get_meta(pos)
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local targets = {}
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-- Only allow the node directly behind to be a start of a network
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local tpos = vector.add(minetest.facedir_to_dir(node.param2), pos)
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local tnode = minetest.get_node(tpos)
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local ndef = minetest.registered_nodes[tnode.name]
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if not ele.helpers.get_item_group(tnode.name, "elefluid_transport") and
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(not ndef['node_io_can_put_liquid'] or not ndef['node_io_can_put_liquid'](tpos, tnode, "")) then
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minetest.forceload_free_block(pos)
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return
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end
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-- Retrieve network
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targets = fluid_targets(pos, tpos)
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-- No targets, don't proceed
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if #targets == 0 then
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return true
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end
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-- Begin transfer
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local srcpos = ele.helpers.face_front(pos, node.param2)
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local srcnode = minetest.get_node(srcpos)
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-- Make sure source node is not air
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if not srcnode or srcnode.name == "air" then
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return true
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end
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local srcdef = minetest.registered_nodes[srcnode.name]
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-- Make sure source node is a registered fluid container
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if not srcdef['node_io_can_take_liquid'] then
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return false
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end
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local c = srcdef.node_io_can_take_liquid(srcpos, srcnode, "")
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if not c then return false end
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local srcmeta = minetest.get_meta(srcpos)
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local srcdef = minetest.registered_nodes[srcnode.name]
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local fl_size = srcdef.node_io_get_liquid_size(srcpos, srcnode, "")
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local buffers = {}
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for i = 1, fl_size do
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buffers[i] = srcdef.node_io_get_liquid_name(srcpos, srcnode, "", i)
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end
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if not #buffers then return true end
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-- Limit the amount of fluid pumped per cycle
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local pcapability = ele.helpers.get_node_property(meta, pos, "fluid_pump_capacity")
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local pumped = 0
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-- Transfer some fluid here
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for _,pos in pairs(targets) do
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if not vector.equals(pos, srcpos) then
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if pumped >= pcapability then break end
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local destnode = minetest.get_node(pos)
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local destdef = minetest.registered_nodes[destnode.name]
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local pp = nil
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if destdef['node_io_can_put_liquid'] then
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if destdef.node_io_can_put_liquid(pos, destnode, "") then
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pp = {}
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local fl_size = destdef.node_io_get_liquid_size(pos, destnode, "")
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for i = 1, fl_size do
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pp[i] = destdef.node_io_get_liquid_name(pos, destnode, "", i)
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end
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if not #pp then pp = nil end
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end
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end
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local changed = false
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if pp ~= nil then
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for bindex,bfluid in pairs(pp) do
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for aindex,afluid in pairs(buffers) do
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if pumped >= pcapability then break end
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if (afluid == bfluid or bfluid == "") then
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local idef = destdef.node_io_room_for_liquid(pos, destnode, "", afluid, pcapability)
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if idef > 0 then
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local fluidcount = srcdef.node_io_get_liquid_stack(srcpos, srcnode, "", aindex):get_count()
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local defc = math.min(fluidcount, idef)
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local defi = srcdef.node_io_take_liquid(srcpos, srcnode, "", nil, afluid, defc)
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if defi.millibuckets > 0 then
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local lo = destdef.node_io_put_liquid(pos, destnode, "", nil, afluid, defi.millibuckets)
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pumped = pumped + (defi.millibuckets - lo)
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changed = true
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end
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end
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end
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end
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end
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end
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if changed then
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minetest.get_node_timer(srcpos):start(1.0)
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minetest.get_node_timer(pos):start(1.0)
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end
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end
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end
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return refresh
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end
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function elefluid.refresh_node(pos)
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minetest.get_node_timer(pos):start(1.0)
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return
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end
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minetest.register_lbm({
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label = "Fluid Transfer Tick",
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name = "elepower_fapi:fluid_transfer_tick",
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nodenames = {"group:elefluid_transport_source"},
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run_at_every_load = true,
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action = elefluid.refresh_node,
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})
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