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99 lines
3.3 KiB
Lua
99 lines
3.3 KiB
Lua
-- This file provides the actual flow and pathfinding logic that makes water
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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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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 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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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 == "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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local 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 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 == "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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}
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if string.find(minetest.get_node(check[fdir+1]).name, "_loaded") then
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if 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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