-- This file provides the actual flow and pathfinding logic that makes water -- move through the pipes. -- -- Contributed by mauvebic, 2013-01-03, rewritten a bit by Vanessa Ezekowitz -- local finitewater = minetest.settings:get_bool("liquid_finite") pipeworks.check_for_liquids = function(pos) local coords = { {x=pos.x,y=pos.y-1,z=pos.z}, {x=pos.x,y=pos.y+1,z=pos.z}, {x=pos.x-1,y=pos.y,z=pos.z}, {x=pos.x+1,y=pos.y,z=pos.z}, {x=pos.x,y=pos.y,z=pos.z-1}, {x=pos.x,y=pos.y,z=pos.z+1}, } for i =1,6 do local name = minetest.get_node(coords[i]).name if name and string.find(name,"water") then if finitewater then minetest.remove_node(coords[i]) end return true end end return false end pipeworks.check_for_inflows = function(pos,node) local coords = { {x=pos.x,y=pos.y-1,z=pos.z}, {x=pos.x,y=pos.y+1,z=pos.z}, {x=pos.x-1,y=pos.y,z=pos.z}, {x=pos.x+1,y=pos.y,z=pos.z}, {x=pos.x,y=pos.y,z=pos.z-1}, {x=pos.x,y=pos.y,z=pos.z+1}, } local newnode = false local source = false for i = 1, 6 do if newnode then break end local testnode = minetest.get_node(coords[i]) local name = testnode.name if name and (name == "pipeworks:pump_on" and pipeworks.check_for_liquids(coords[i])) or string.find(name,"_loaded") then if string.find(name,"_loaded") then source = minetest.get_meta(coords[i]):get_string("source") if source == minetest.pos_to_string(pos) then break end end if string.find(name, "valve") or string.find(name, "sensor") or string.find(name, "straight_pipe") or string.find(name, "panel") then if ((i == 3 or i == 4) and minetest.facedir_to_dir(testnode.param2).x ~= 0) or ((i == 5 or i == 6) and minetest.facedir_to_dir(testnode.param2).z ~= 0) or ((i == 1 or i == 2) and minetest.facedir_to_dir(testnode.param2).y ~= 0) then newnode = string.gsub(node.name,"empty","loaded") source = {x=coords[i].x,y=coords[i].y,z=coords[i].z} end else newnode = string.gsub(node.name,"empty","loaded") source = {x=coords[i].x,y=coords[i].y,z=coords[i].z} end end end if newnode then minetest.add_node(pos,{name=newnode, param2 = node.param2}) minetest.get_meta(pos):set_string("source",minetest.pos_to_string(source)) end end pipeworks.check_sources = function(pos,node) local sourcepos = minetest.string_to_pos(minetest.get_meta(pos):get_string("source")) if not sourcepos then return end local source = minetest.get_node(sourcepos).name local newnode = false if source and not ((source == "pipeworks:pump_on" and pipeworks.check_for_liquids(sourcepos)) or string.find(source,"_loaded") or source == "ignore" ) then newnode = string.gsub(node.name,"loaded","empty") end if newnode then minetest.add_node(pos,{name=newnode, param2 = node.param2}) minetest.get_meta(pos):set_string("source","") end end pipeworks.spigot_check = function(pos, node) local belowname = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z}).name if belowname and (belowname == "air" or belowname == "default:water_flowing" or belowname == "default:water_source") then local spigotname = minetest.get_node(pos).name local fdir=node.param2 % 4 local check = { {x=pos.x,y=pos.y,z=pos.z+1}, {x=pos.x+1,y=pos.y,z=pos.z}, {x=pos.x,y=pos.y,z=pos.z-1}, {x=pos.x-1,y=pos.y,z=pos.z} } local near_node = minetest.get_node(check[fdir+1]) if near_node and string.find(near_node.name, "_loaded") then if spigotname and spigotname == "pipeworks:spigot" then minetest.add_node(pos,{name = "pipeworks:spigot_pouring", param2 = fdir}) if finitewater or belowname ~= "default:water_source" then minetest.add_node({x=pos.x,y=pos.y-1,z=pos.z},{name = "default:water_source"}) end end else if spigotname == "pipeworks:spigot_pouring" then minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:spigot", param2 = fdir}) if belowname == "default:water_source" and not finitewater then minetest.remove_node({x=pos.x,y=pos.y-1,z=pos.z}) end end end end end pipeworks.fountainhead_check = function(pos, node) local abovename = minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name if abovename and (abovename == "air" or abovename == "default:water_flowing" or abovename == "default:water_source") then local fountainhead_name = minetest.get_node(pos).name local near_node = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z}) if near_node and string.find(near_node.name, "_loaded") then if fountainhead_name and fountainhead_name == "pipeworks:fountainhead" then minetest.add_node(pos,{name = "pipeworks:fountainhead_pouring"}) if finitewater or abovename ~= "default:water_source" then minetest.add_node({x=pos.x,y=pos.y+1,z=pos.z},{name = "default:water_source"}) end end else if fountainhead_name == "pipeworks:fountainhead_pouring" then minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:fountainhead"}) if abovename == "default:water_source" and not finitewater then minetest.remove_node({x=pos.x,y=pos.y+1,z=pos.z}) end end end end end