mirror of
https://github.com/mt-mods/pipeworks.git
synced 2025-07-03 08:40:34 +02:00
complete rewrite of water flowing logic
also implements leak-down in "off" pumps fixes failure to remove water source when digging active spigot/fountain
This commit is contained in:
Vanessa Ezekowitz
@ -1,121 +1,192 @@
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-- This file provides the actual flow and pathfinding logic that makes water
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-- This file provides the actual flow logic that makes liquids
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-- move through the pipes.
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--
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-- Contributed by mauvebic, 2013-01-03, rewritten a bit by Vanessa Ezekowitz
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--
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local finitewater = minetest.setting_getbool("liquid_finite")
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local finite_liquids = minetest.setting_getbool("liquid_finite")
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local pipe_liquid_max = 8
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local pipe_liquid_shows_loaded = 2
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pipeworks.check_for_liquids = function(pos)
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local coords = {
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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-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,z=pos.z-1},
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{x=pos.x,y=pos.y,z=pos.z+1}, }
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for i =1,6 do
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local name = minetest.get_node(coords[i]).name
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if name and string.find(name,"water") then
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if finitewater then minetest.remove_node(coords[i]) end
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return true
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end
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end
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return false
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end
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-- Evaluate and balance liquid in all pipes
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pipeworks.check_for_inflows = function(pos,node)
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local coords = {
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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-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,z=pos.z-1},
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{x=pos.x,y=pos.y,z=pos.z+1}, }
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local newnode = false
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local source = false
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for i =1,6 do
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if newnode then break end
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local name = minetest.get_node(coords[i]).name
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if name and (name == "pipeworks:pump_on" and pipeworks.check_for_liquids(coords[i])) or string.find(name,"_loaded") then
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if string.find(name,"_loaded") then
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source = minetest.get_meta(coords[i]):get_string("source")
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if source == minetest.pos_to_string(pos) then break end
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end
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newnode = string.gsub(node.name,"empty","loaded")
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source = {x=coords[i].x,y=coords[i].y,z=coords[i].z}
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end
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end
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if newnode then
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minetest.add_node(pos,{name=newnode, param2 = node.param2})
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minetest.get_meta(pos):set_string("source",minetest.pos_to_string(source))
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end
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end
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pipeworks.check_sources = function(pos,node)
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local sourcepos = minetest.string_to_pos(minetest.get_meta(pos):get_string("source"))
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if not sourcepos then return end
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local source = minetest.get_node(sourcepos).name
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local newnode = false
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if source and not ((source == "pipeworks:pump_on" and pipeworks.check_for_liquids(sourcepos)) or string.find(source,"_loaded") or source == "ignore" ) then
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newnode = string.gsub(node.name,"loaded","empty")
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end
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if newnode then
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minetest.add_node(pos,{name=newnode, param2 = node.param2})
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minetest.get_meta(pos):set_string("source","")
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end
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end
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pipeworks.spigot_check = function(pos, node)
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local belowname = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z}).name
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if belowname and (belowname == "air" or belowname == "default:water_flowing" or belowname == "default:water_source") then
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local spigotname = minetest.get_node(pos).name
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local fdir=node.param2
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local check = {
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{x=pos.x,y=pos.y,z=pos.z+1},
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{x=pos.x+1,y=pos.y,z=pos.z},
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{x=pos.x,y=pos.y,z=pos.z-1},
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{x=pos.x-1,y=pos.y,z=pos.z}
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minetest.register_abm({
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nodenames = pipeworks.pipe_nodenames,
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interval = 2,
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chance = 1,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local coords = {
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{x = pos.x, 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-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, z = pos.z-1},
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{x = pos.x, y = pos.y, z = pos.z+1},
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}
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local near_node = minetest.get_node(check[fdir+1])
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if near_node and string.find(near_node.name, "_loaded") then
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if spigotname and spigotname == "pipeworks:spigot" then
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minetest.add_node(pos,{name = "pipeworks:spigot_pouring", param2 = fdir})
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if finitewater or belowname ~= "default:water_source" then
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minetest.add_node({x=pos.x,y=pos.y-1,z=pos.z},{name = "default:water_source"})
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end
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end
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else
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if spigotname == "pipeworks:spigot_pouring" then
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minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:spigot", param2 = fdir})
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if belowname == "default:water_source" and not finitewater then
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minetest.remove_node({x=pos.x,y=pos.y-1,z=pos.z})
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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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pipeworks.fountainhead_check = function(pos, node)
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local abovename = minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name
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if abovename and (abovename == "air" or abovename == "default:water_flowing" or abovename == "default:water_source") then
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local fountainhead_name = minetest.get_node(pos).name
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local near_node = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z})
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if near_node and string.find(near_node.name, "_loaded") then
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if fountainhead_name and fountainhead_name == "pipeworks:fountainhead" then
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minetest.add_node(pos,{name = "pipeworks:fountainhead_pouring"})
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if finitewater or abovename ~= "default:water_source" then
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minetest.add_node({x=pos.x,y=pos.y+1,z=pos.z},{name = "default:water_source"})
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local num_connections = 0
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local connection_list = {}
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local total_level = 0
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for _,adjacentpos in ipairs(coords) do
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local adjacent_node = minetest.get_node(adjacentpos)
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if adjacent_node and string.find(dump(pipeworks.pipe_nodenames), adjacent_node.name) then
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local node_level = (minetest.get_meta(adjacentpos):get_float("liquid_level")) or 0
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if node_level < 0 then node_level = 0 end
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total_level = total_level + node_level
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num_connections = num_connections + 1
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table.insert(connection_list, adjacentpos)
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end
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end
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local average_level = total_level / num_connections
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for _, connected_pipe_pos in ipairs(connection_list) do
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local newnode
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local connected_pipe = minetest.get_node(connected_pipe_pos)
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local pipe_name = string.match(connected_pipe.name, "pipeworks:pipe_%d.*_")
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if connected_pipe and pipe_name then
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minetest.get_meta(connected_pipe_pos):set_float("liquid_level", average_level)
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if average_level > pipe_liquid_shows_loaded then
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newnode = pipe_name.."loaded"
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else
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newnode = pipe_name.."empty"
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end
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end
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else
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if fountainhead_name == "pipeworks:fountainhead_pouring" then
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minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:fountainhead"})
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if abovename == "default:water_source" and not finitewater then
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minetest.remove_node({x=pos.x,y=pos.y+1,z=pos.z})
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if newnode and connected_pipe.name ~= newnode then
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minetest.swap_node(connected_pipe_pos, {name = newnode, param2 = connected_pipe.param2})
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end
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end
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end
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})
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-- Process all pumps in the area
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minetest.register_abm({
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nodenames = {"pipeworks:pump_on", "pipeworks:pump_off"},
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interval = 1,
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chance = 1,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local minp = {x = pos.x-1, y = pos.y-1, z = pos.z-1}
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local maxp = {x = pos.x+1, y = pos.y, z = pos.z+1}
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local pos_above = {x = pos.x, y = pos.y+1, z = pos.z}
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local node_above = minetest.get_node(pos_above)
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if not node_above then return end
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local meta = minetest.get_meta(pos_above)
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local node_level_above = meta:get_float("liquid_level")
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if node_level_above == nil then node_level_above = 0 end
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local pipe_name = string.match(node_above.name, "pipeworks:pipe_%d.*_")
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if pipe_name then
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if node.name == "pipeworks:pump_on" then
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local water_nodes = minetest.find_nodes_in_area(minp, maxp,
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{"default:water_source", "default:water_flowing"})
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if (node_level_above < pipe_liquid_max) and #water_nodes > 1 then
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meta:set_float("liquid_level", node_level_above + 4) -- add water to the pipe
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end
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else
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if node_level_above > 0 then
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meta:set_float("liquid_level", node_level_above - 1) -- leak the pipe down
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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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})
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-- Process all fountainheads in the area
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minetest.register_abm({
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nodenames = {"pipeworks:fountainhead"},
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interval = 1,
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chance = 1,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local pos_above = {x = pos.x, y = pos.y+1, z = pos.z}
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local node_above = minetest.get_node(pos_above)
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if not node_above then return end
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local pos_below = {x = pos.x, y = pos.y-1, z = pos.z}
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local node_below = minetest.get_node(pos_below)
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if not node_below then return end
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local node_level_below = (minetest.get_meta(pos_below):get_float("liquid_level")) or 0
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print(node_level_below)
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print(dump(node_above.name))
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if node_level_below > 2
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and (node_above.name == "air" or node_above.name == "default:water_flowing") then
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minetest.set_node(pos_above, {name = "default:water_source"})
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elseif node_level_below < 1 and node_above.name == "default:water_source" then
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minetest.set_node(pos_above, {name = "air"})
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end
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if node_level_below > 1
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and (node_above.name == "air" or node_above.name == "default:water_source") then
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minetest.get_meta(pos_below):set_float("liquid_level", node_level_below - 1)
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end
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end
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})
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-- Process all spigots in the area
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minetest.register_abm({
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nodenames = {"pipeworks:spigot","pipeworks:spigot_pouring"},
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interval = 1,
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chance = 1,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local pos_below = {x = pos.x, y = pos.y-1, z = pos.z}
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local below_node = minetest.get_node(pos_below)
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if not below_node then return end
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if below_node.name == "air" or below_node.name == "default:water_flowing"
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or below_node.name == "default:water_source" then
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local fdir = node.param2
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local fdir_to_pos = {
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{x = pos.x, y = pos.y, z = pos.z+1},
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{x = pos.x+1, y = pos.y, z = pos.z },
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{x = pos.x, y = pos.y, z = pos.z-1},
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{x = pos.x-1, y = pos.y, z = pos.z }
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}
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local pos_adjacent = fdir_to_pos[fdir+1]
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local adjacent_node = minetest.get_node(pos_adjacent)
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if not adjacent_node then return end
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local adjacent_node_level = (minetest.get_meta(pos_adjacent):get_float("liquid_level")) or 0
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local pipe_name = string.match(adjacent_node.name, "pipeworks:pipe_%d.*_")
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if pipe_name and adjacent_node_level > 2
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and (below_node.name == "air" or below_node.name == "default:water_flowing") then
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minetest.set_node(pos, {name = "pipeworks:spigot_pouring", param2 = fdir})
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minetest.set_node(pos_below, {name = "default:water_source"})
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end
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if (pipe_name and adjacent_node_level < 1)
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or (node.name ~= "pipeworks:spigot" and not pipe_name) then
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minetest.set_node(pos,{name = "pipeworks:spigot", param2 = fdir})
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if below_node.name == "default:water_source" then
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minetest.set_node(pos_below, {name = "air"})
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end
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end
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if adjacent_node_level > 1
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and (below_node.name == "air" or below_node.name == "default:water_source") then
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minetest.get_meta(pos_adjacent):set_float("liquid_level", adjacent_node_level - 1)
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end
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end
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end
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})
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--[[
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other nodes that need processed separately:
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table.insert(pipeworks.pipe_nodenames,"pipeworks:valve_on_empty")
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table.insert(pipeworks.pipe_nodenames,"pipeworks:valve_off_empty")
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table.insert(pipeworks.pipe_nodenames,"pipeworks:entry_panel_empty")
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table.insert(pipeworks.pipe_nodenames,"pipeworks:flow_sensor_empty")
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table.insert(pipeworks.pipe_nodenames,"pipeworks:valve_on_loaded")
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table.insert(pipeworks.pipe_nodenames,"pipeworks:entry_panel_loaded")
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table.insert(pipeworks.pipe_nodenames,"pipeworks:flow_sensor_loaded")
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]]--
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