mirror of
https://github.com/mt-mods/pipeworks.git
synced 2024-11-17 15:58:29 +01:00
247 lines
9.0 KiB
Lua
247 lines
9.0 KiB
Lua
-- 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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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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if pipeworks == nil then
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pipeworks = {}
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end
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-- this was tested experimentally, because I can't the whole bit arithematic
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-- with these facingRight means "We're facing the right side of whatever it is"
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pipeworks.connects = {
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-- a filter's output is on the right, input on the left
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facingLeft = function (i,param2)
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-- measured with a mese filter
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if i == 1 then
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return param2 == 2 or param2 == 6 or param2 == 10 or param2 == 20
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elseif i == 2 then
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return param2 == 0 or param2 == 4 or param2 == 8 or param2 == 22
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elseif i == 3 then
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return param2 == 7 or param2 == 9 or param2 == 12 or param2 == 18
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elseif i == 4 then
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return param2 == 5 or param2 == 11 or param2 == 14 or param2 == 16
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elseif i == 5 then
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return param2 == 1 or param2 == 13 or param2 == 17 or param2 == 21
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elseif i == 6 then
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return param2 == 3 or param2 == 15 or param2 == 19
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end
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end,
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facingRight = function (i,param2)
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-- measured with a mese filter
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if i == 1 then
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return param2 == 0 or param2 == 4 or param2 == 8 or param2 == 22
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elseif i == 2 then
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return param2 == 2 or param2 == 6 or param2 == 10 or param2 == 20
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elseif i == 3 then
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return param2 == 5 or param2 == 11 or param2 == 14 or param2 == 16
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elseif i == 4 then
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return param2 == 7 or param2 == 9 or param2 == 12 or param2 == 18
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elseif i == 5 then
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return param2 == 3 or param2 == 15 or param2 == 19
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elseif i == 6 then
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return param2 == 1 or param2 == 13 or param2 == 17 or param2 == 21
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end
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end,
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facingFront = function (i,param2)
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-- measured with a chest and a technic:nodebreaker
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if i == 1 then
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return param2 == 3 or param2 == 7 or param2 == 11 or param2 == 21
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elseif i == 2 then
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return param2 == 1 or param2 == 5 or param2 == 9
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elseif i == 3 then
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return param2 == 4 or param2 == 10 or param2 == 14 or param2 == 19
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elseif i == 4 then
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return param2 == 6 or param2 == 8 or param2 == 15 or param2 == 17
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elseif i == 5 then
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return param2 == 14 or param2 == 18 or param2 == 22 or param2 == 2
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elseif i == 6 then
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return param2 == 12 or param2 == 16 or param2 == 20 or param2 == 0
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end
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end,
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facingSide = function (i,param2)
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-- aka not top or bottom
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-- measured with a chair
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if i == 1 or i == 2 then
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return not (param2 >= 12 and param2 <= 19)
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elseif i == 3 or i == 4 then
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return not ((param2 >= 0 and param2 < 4) or (param2 >= 20 and param2 <= 22))
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elseif i == 5 or i == 6 then
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return not (param2 >= 4 and param2 <= 11)
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end
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end,
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facingTop = function(i,param2)
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-- measured with a chair
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if i == 1 then
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return param2 >= 16 and param2 <= 20
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elseif i == 2 then
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return param2 >= 12 and param2 < 16
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elseif i == 3 then
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return param2 >= 0 and param2 < 4
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elseif i == 4 then
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return param2 >= 21 and param2 < 23
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elseif i == 5 then
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return param2 >= 4 and param2 < 8
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elseif i == 6 then
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return param2 >= 8 and param2 < 12
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-- else error bad value for i
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end
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end
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}
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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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function tube_autoroute(pos)
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local active = {0, 0, 0, 0, 0, 0}
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local nctr = minetest.get_node(pos)
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if not is_tube(nctr.name) then return end
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local adjustments = {
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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 },
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{ 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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}
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-- xm = 1, xp = 2, ym = 3, yp = 4, zm = 5, zp = 6
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local positions = {}
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local nodes = {}
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for i,adj in ipairs(adjustments) do
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positions[i] = {x=pos.x+adj.x, y=pos.y+adj.y, z=pos.z+adj.z}
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nodes[i] = minetest.get_node(positions[i])
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end
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for i,node in ipairs(nodes) do
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local idef = minetest.registered_nodes[node.name]
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-- handle the tubes themselves
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if is_tube(node.name) then
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active[i] = 1
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-- handle new style connectors
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elseif idef.tube and idef.tube.connects then
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-- connects returns true if self can connect w/ neighboring position
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-- it uses facesFront, facesTop etc to determine this
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-- pipeworks.connects.facingFront...
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if idef.tube.connects(i,param2) then active[i] = 1 end
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-- oops, handle the *other* newstyle connectors
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elseif idef.tube and idef.tube.connect_side then
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local dir = adjustments[i]
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if idef.connect_sides[nodeside(node, {x=-dir.x, y=-dir.y, z=-dir.z})] then active[i] = 1 end
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-- legacy stuff follows
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elseif string.find(node.name, "pipeworks:filter") ~= nil or string.find(node.name, "pipeworks:mese_filter") ~= nil then
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-- filters only connect to pipes on their output (despite appearances)
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-- input has to be a chest or furnace or something
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if pipeworks.connects.facingRight(i,node.param2)
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then
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active[i] = 1
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end
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elseif
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-- not the front
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string.find(node.name, "pipeworks:deployer_") ~= nil or
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string.find(node.name, "pipeworks:nodebreaker_") ~= nil or
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string.find(node.name, "technic:nodebreaker_") ~= nil
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then
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if not pipeworks.connects.facingFront(i,node.param2) then active[i] = 1 end
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elseif
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string.find(node.name, "default:furnace") ~= nil or
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string.find(node.name, "default:chest") or
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string.find(node.name, "default:chest_locked")
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then
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if not pipeworks.connects.facingFront(i,node.param2) or
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pipeworks.connects.facingTop(i,node.param2) then active[i] = 1 end
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elseif string.find(node.name, "pipeworks:autocrafter") ~= nil then
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active[i] = 1
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end
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end
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-- all sides checked, now figure which tube to use.
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nsurround = ""
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for i,n in ipairs(active) do
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nsurround = nsurround .. n
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end
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local newname=string.sub(nctr.name,1,-7)..nsurround
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if newname == nctr.name then return end
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local meta=minetest.get_meta(pos)
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local meta0=meta:to_table() -- XXX: hacky_swap_node
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nctr.name = newname
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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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local nctr = minetest.get_node(pos)
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end
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