forked from mtcontrib/pipeworks
400 lines
10 KiB
Lua
400 lines
10 KiB
Lua
--define the functions from https://github.com/minetest/minetest/pull/834 while waiting for the devs to notice it
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local function dir_to_facedir(dir, is6d)
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--account for y if requested
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if is6d and math.abs(dir.y) > math.abs(dir.x) and math.abs(dir.y) > math.abs(dir.z) then
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--from above
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if dir.y < 0 then
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if math.abs(dir.x) > math.abs(dir.z) then
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if dir.x < 0 then
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return 19
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else
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return 13
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end
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else
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if dir.z < 0 then
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return 10
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else
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return 4
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end
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end
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--from below
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else
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if math.abs(dir.x) > math.abs(dir.z) then
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if dir.x < 0 then
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return 15
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else
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return 17
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end
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else
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if dir.z < 0 then
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return 6
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else
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return 8
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end
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end
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end
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--otherwise, place horizontally
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elseif math.abs(dir.x) > math.abs(dir.z) then
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if dir.x < 0 then
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return 3
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else
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return 1
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end
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else
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if dir.z < 0 then
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return 2
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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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end
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local function facedir_to_dir(facedir)
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--a table of possible dirs
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return ({{x=0, y=0, z=1},
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{x=1, y=0, z=0},
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{x=0, y=0, z=-1},
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{x=-1, y=0, z=0},
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{x=0, y=-1, z=0},
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{x=0, y=1, z=0}})
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--indexed into by a table of correlating facedirs
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[({[0]=1, 2, 3, 4,
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5, 2, 6, 4,
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6, 2, 5, 4,
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1, 5, 3, 6,
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1, 6, 3, 5,
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1, 4, 3, 2})
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--indexed into by the facedir in question
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[facedir]]
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end
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-- autorouting for pipes
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function pipe_scanforobjects(pos)
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pipe_autoroute({ x=pos.x-1, y=pos.y , z=pos.z }, "_loaded")
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pipe_autoroute({ x=pos.x+1, y=pos.y , z=pos.z }, "_loaded")
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pipe_autoroute({ x=pos.x , y=pos.y-1, z=pos.z }, "_loaded")
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pipe_autoroute({ x=pos.x , y=pos.y+1, z=pos.z }, "_loaded")
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pipe_autoroute({ x=pos.x , y=pos.y , z=pos.z-1 }, "_loaded")
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pipe_autoroute({ x=pos.x , y=pos.y , z=pos.z+1 }, "_loaded")
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pipe_autoroute(pos, "_loaded")
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pipe_autoroute({ x=pos.x-1, y=pos.y , z=pos.z }, "_empty")
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pipe_autoroute({ x=pos.x+1, y=pos.y , z=pos.z }, "_empty")
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pipe_autoroute({ x=pos.x , y=pos.y-1, z=pos.z }, "_empty")
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pipe_autoroute({ x=pos.x , y=pos.y+1, z=pos.z }, "_empty")
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pipe_autoroute({ x=pos.x , y=pos.y , z=pos.z-1 }, "_empty")
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pipe_autoroute({ x=pos.x , y=pos.y , z=pos.z+1 }, "_empty")
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pipe_autoroute(pos, "_empty")
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end
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function pipe_autoroute(pos, state)
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nctr = minetest.get_node(pos)
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if (string.find(nctr.name, "pipeworks:pipe_") == nil) then return end
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pipes_scansurroundings(pos)
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nsurround = pxm..pxp..pym..pyp..pzm..pzp
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if nsurround == "000000" then nsurround = "110000" end
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minetest.add_node(pos, { name = "pipeworks:pipe_"..nsurround..state })
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end
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-- autorouting for pneumatic tubes
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function tube_scanforobjects(pos)
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if pos == nil then return end
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print("tubes_scanforobjects called at pos "..dump(pos))
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tube_autoroute({ x=pos.x-1, y=pos.y , z=pos.z })
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tube_autoroute({ x=pos.x+1, y=pos.y , z=pos.z })
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tube_autoroute({ x=pos.x , y=pos.y-1, z=pos.z })
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tube_autoroute({ x=pos.x , y=pos.y+1, z=pos.z })
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tube_autoroute({ x=pos.x , y=pos.y , z=pos.z-1 })
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tube_autoroute({ x=pos.x , y=pos.y , z=pos.z+1 })
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tube_autoroute(pos)
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end
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function in_table(table,element)
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for _,el in ipairs(table) do
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if el==element then return true end
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end
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return false
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end
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function is_tube(nodename)
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return in_table(tubenodes,nodename)
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end
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function tube_autoroute(pos)
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local nctr = minetest.get_node(pos)
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--a function for determining which side of the node we are on
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local function nodeside(node, tubedir)
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--get a vector pointing back
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local backdir = facedir_to_dir(node.param2)
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--check whether the vector is equivalent to the tube direction; if it is, the tube's on the backside
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if backdir.x == tubedir.x and backdir.y == tubedir.y and backdir.z == tubedir.z then
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return "back"
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end
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--check whether the vector is antiparallel with the tube direction; that indicates the front
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if backdir.x == -tubedir.x and backdir.y == -tubedir.y and backdir.z == -tubedir.z then
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return "front"
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end
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--facedir is defined in terms of the top-bottom axis of the node; we'll take advantage of that
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local topdir = ({[0]={x=0, y=1, z=0},
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{x=0, y=0, z=1},
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{x=0, y=0, z=-1},
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{x=1, y=0, z=0},
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{x=-1, y=0, z=0},
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{x=0, y=-1, z=0}})[math.floor(node.param2/4)]
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--is this the top?
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if topdir.x == tubedir.x and topdir.y == tubedir.y and topdir.z == tubedir.z then
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return "top"
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end
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--or the bottom?
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if topdir.x == -tubedir.x and topdir.y == -tubedir.y and topdir.z == -tubedir.z then
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return "bottom"
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end
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--we shall apply some maths to obtain the right-facing vector
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local rightdir = {x=topdir.y*backdir.z - backdir.y*topdir.z,
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y=topdir.z*backdir.x - backdir.z*topdir.x,
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z=topdir.x*backdir.y - backdir.x*topdir.y}
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--is this the right side?
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if rightdir.x == tubedir.x and rightdir.y == tubedir.y and rightdir.z == tubedir.z then
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return "right"
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end
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--or the left?
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if rightdir.x == -tubedir.x and rightdir.y == -tubedir.y and rightdir.z == -tubedir.z then
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return "left"
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end
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--we should be done by now; initiate panic mode
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minetest.log("error", "nodeside has been confused by its parameters; see pipeworks autoplace.lua, line 382")
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end
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--a further function for determining whether we should extend a tube in a certain direction
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local function surchar(dir)
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--get the node in that direction
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local node = minetest.get_node{x=pos.x+dir.x, y=pos.y+dir.y, z=pos.z+dir.z}
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--and its tube table
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local nodetube = minetest.registered_nodes[node.name].tube
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--choose a surround character
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if nodetube and nodetube.connect_sides
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and nodetube.connect_sides[nodeside(node, {x=-dir.x, y=-dir.y, z=-dir.z})] then
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return '1'
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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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--keep track of the tube surroundings
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local nsurround = ""
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--look in each direction
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nsurround = nsurround..surchar{x=-1, y=0, z=0}
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nsurround = nsurround..surchar{x=1, y=0, z=0}
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nsurround = nsurround..surchar{x=0, y=-1, z=0}
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nsurround = nsurround..surchar{x=0, y=1, z=0}
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nsurround = nsurround..surchar{x=0, y=0, z=-1}
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nsurround = nsurround..surchar{x=0, y=0, z=1}
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-- Apply the final routing decisions to the existing tube (if any)
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if is_tube(nctr.name) then
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local meta=minetest.get_meta(pos)
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local meta0=meta:to_table()
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nctr.name=string.sub(nctr.name,1,-7)..nsurround
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minetest.add_node(pos, nctr)
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local meta=minetest.get_meta(pos)
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meta:from_table(meta0)
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end
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end
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-- auto-rotation code for various devices the tubes attach to
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function pipes_scansurroundings(pos)
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pxm=0
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pxp=0
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pym=0
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pyp=0
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pzm=0
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pzp=0
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nxm = minetest.get_node({ x=pos.x-1, y=pos.y , z=pos.z })
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nxp = minetest.get_node({ x=pos.x+1, y=pos.y , z=pos.z })
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nym = minetest.get_node({ x=pos.x , y=pos.y-1, z=pos.z })
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nyp = minetest.get_node({ x=pos.x , y=pos.y+1, z=pos.z })
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nzm = minetest.get_node({ x=pos.x , y=pos.y , z=pos.z-1 })
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nzp = minetest.get_node({ x=pos.x , y=pos.y , z=pos.z+1 })
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if (string.find(nxm.name, "pipeworks:pipe_") ~= nil) then pxm=1 end
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if (string.find(nxp.name, "pipeworks:pipe_") ~= nil) then pxp=1 end
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if (string.find(nym.name, "pipeworks:pipe_") ~= nil) then pym=1 end
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if (string.find(nyp.name, "pipeworks:pipe_") ~= nil) then pyp=1 end
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if (string.find(nzm.name, "pipeworks:pipe_") ~= nil) then pzm=1 end
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if (string.find(nzp.name, "pipeworks:pipe_") ~= nil) then pzp=1 end
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-- Special handling for valves...
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if (string.find(nxm.name, "pipeworks:valve") ~= nil)
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and (nxm.param2 == 0 or nxm.param2 == 2) then
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pxm=1
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end
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if (string.find(nxp.name, "pipeworks:valve") ~= nil)
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and (nxp.param2 == 0 or nxp.param2 == 2) then
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pxp=1
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end
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if (string.find(nzm.name, "pipeworks:valve") ~= nil)
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and (nzm.param2 == 1 or nzm.param2 == 3) then
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pzm=1
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end
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if (string.find(nzp.name, "pipeworks:valve") ~= nil)
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and (nzp.param2 == 1 or nzp.param2 == 3) then
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pzp=1
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end
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-- ...flow sensors...
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if (string.find(nxm.name, "pipeworks:flow_sensor") ~= nil)
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and (nxm.param2 == 0 or nxm.param2 == 2) then
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pxm=1
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end
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if (string.find(nxp.name, "pipeworks:flow_sensor") ~= nil)
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and (nxp.param2 == 0 or nxp.param2 == 2) then
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pxp=1
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end
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if (string.find(nzm.name, "pipeworks:flow_sensor") ~= nil)
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and (nzm.param2 == 1 or nzm.param2 == 3) then
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pzm=1
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end
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if (string.find(nzp.name, "pipeworks:flow_sensor") ~= nil)
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and (nzp.param2 == 1 or nzp.param2 == 3) then
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pzp=1
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end
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-- ...spigots...
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if (string.find(nxm.name, "pipeworks:spigot") ~= nil)
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and nxm.param2 == 1 then
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pxm=1
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end
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if (string.find(nxp.name, "pipeworks:spigot") ~= nil)
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and nxp.param2 == 3 then
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pxp=1
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end
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if (string.find(nzm.name, "pipeworks:spigot") ~= nil)
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and nzm.param2 == 0 then
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pzm=1
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end
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if (string.find(nzp.name, "pipeworks:spigot") ~= nil)
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and nzp.param2 == 2 then
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pzp=1
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end
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-- ...sealed pipe entry/exit...
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if (string.find(nxm.name, "pipeworks:entry_panel") ~= nil)
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and (nxm.param2 == 1 or nxm.param2 == 3) then
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pxm=1
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end
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if (string.find(nxp.name, "pipeworks:entry_panel") ~= nil)
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and (nxp.param2 == 1 or nxp.param2 == 3) then
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pxp=1
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end
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if (string.find(nzm.name, "pipeworks:entry_panel") ~= nil)
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and (nzm.param2 == 0 or nzm.param2 == 2) then
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pzm=1
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end
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if (string.find(nzp.name, "pipeworks:entry_panel") ~= nil)
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and (nzp.param2 == 0 or nzp.param2 == 2) then
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pzp=1
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end
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if (string.find(nym.name, "pipeworks:entry_panel") ~= nil)
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and nym.param2 == 13 then
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pym=1
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end
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if (string.find(nyp.name, "pipeworks:entry_panel") ~= nil)
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and nyp.param2 == 13 then
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pyp=1
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end
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-- ...pumps, grates...
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if (string.find(nym.name, "pipeworks:grating") ~= nil) or
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(string.find(nym.name, "pipeworks:pump") ~= nil) then
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pym=1
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end
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-- ... and storage tanks.
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if (string.find(nym.name, "pipeworks:storage_tank_") ~= nil) then
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pym=1
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end
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if (string.find(nyp.name, "pipeworks:storage_tank_") ~= nil) then
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pyp=1
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end
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-- ...extra devices specified via the function's parameters
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-- ...except that this part is not implemented yet
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--
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-- xxx = nxm, nxp, nym, nyp, nzm, or nzp depending on the direction to check
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-- yyy = pxm, pxp, pym, pyp, pzm, or pzp accordingly.
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--
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-- if string.find(xxx.name, "modname:nodename") ~= nil then
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-- yyy = 1
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-- end
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--
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-- for example:
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--
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-- if string.find(nym.name, "aero:outlet") ~= nil then
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-- pym = 1
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-- end
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--
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end
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function pipe_look_for_stackable_tanks(pos)
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local tym = minetest.get_node({ x=pos.x , y=pos.y-1, z=pos.z })
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if string.find(tym.name, "pipeworks:storage_tank_") ~= nil or
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string.find(tym.name, "pipeworks:expansion_tank_") ~= nil then
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minetest.add_node(pos, { name = "pipeworks:expansion_tank_0", param2 = tym.param2})
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end
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end
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