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--[[
autorouting for pipes
To connect pipes to some node, include this in the node def...
pipe_connections = {
pattern = <string>, -- if supplied, search for this pattern instead of the exact node name
left = <bool>, -- true (or 1) if the left side of the node needs to connect to a pipe
right = <bool>, -- or from the right side, etc.
top = <bool>,
bottom = <bool>,
front = <bool>,
back = <bool>,
left_param2 = <num>, -- the node must have this param2 to connect from the left
right_param2 = <num>, -- or right, etc.
top_param2 = <num>, -- Omit some or all of these to skip checking param2 for those sides
bottom_param2 = <num>,
front_param2 = <num>,
back_param2 = <num>,
},
...then add, pipeworks.scan_for_pipe_objects(pos)
to your node's after_dig_node and after_place_node callbacks.
]]--
-- get the axis dir (just 6 faces) of target node, assumes the pipe is the axis
function pipeworks.get_axis_dir(nodetable, pattern)
local pxm,pxp,pym,pyp,pzm,pzp
if string.find(nodetable.nxm.name, pattern)
and minetest.facedir_to_dir(nodetable.nxm.param2).x ~= 0 then
pxm=1
end
if string.find(nodetable.nxp.name, pattern)
and minetest.facedir_to_dir(nodetable.nxp.param2).x ~= 0 then
pxp=1
end
if string.find(nodetable.nzm.name, pattern)
and minetest.facedir_to_dir(nodetable.nzm.param2).z ~= 0 then
pzm=1
end
if string.find(nodetable.nzp.name, pattern)
and minetest.facedir_to_dir(nodetable.nzp.param2).z ~= 0 then
pzp=1
end
if string.find(nodetable.nym.name, pattern)
and minetest.facedir_to_dir(nodetable.nym.param2).y ~= 0 then
pym=1
end
if string.find(nodetable.nyp.name, pattern)
and minetest.facedir_to_dir(nodetable.nyp.param2).y ~= 0 then
pyp=1
end
local match = pxm or pxp or pym or pyp or pzm or pzp
return match,pxm,pxp,pym,pyp,pzm,pzp
end
local tube_table = {[0] = 1, 2, 2, 4, 2, 4, 4, 5, 2, 3, 4, 6, 4, 6, 5, 7, 2, 4, 3, 6, 4, 5, 6, 7, 4, 6, 6, 8, 5, 7, 7, 9, 2, 4, 4, 5, 3, 6, 6, 7, 4, 6, 5, 7, 6, 8, 7, 9, 4, 5, 6, 7, 6, 7, 8, 9, 5, 7, 7, 9, 7, 9, 9, 10}
local tube_table_facedirs = {[0] = 0, 0, 5, 0, 3, 4, 3, 0, 2, 0, 2, 0, 6, 4, 3, 0, 7, 12, 5, 12, 7, 4, 5, 5, 18, 20, 16, 0, 7, 4, 7, 0, 1, 8, 1, 1, 1, 13, 1, 1, 10, 8, 2, 2, 17, 4, 3, 6, 9, 9, 9, 9, 21, 13, 1, 1, 10, 10, 11, 2, 19, 4, 3, 0}
local function autoroute_pipes(pos)
local nctr = minetest.get_node(pos)
local state = "_empty"
if (string.find(nctr.name, "pipeworks:pipe_") == nil) then return end
if (string.find(nctr.name, "_loaded") ~= nil) then state = "_loaded" end
local nsurround = pipeworks.scan_pipe_surroundings(pos)
if nsurround == 0 then nsurround = 9 end
minetest.swap_node(pos, {name = "pipeworks:pipe_"..tube_table[nsurround]..state,
param2 = tube_table_facedirs[nsurround]})
end
function pipeworks.scan_for_pipe_objects(pos)
autoroute_pipes({ x=pos.x-1, y=pos.y , z=pos.z })
autoroute_pipes({ x=pos.x+1, y=pos.y , z=pos.z })
autoroute_pipes({ x=pos.x , y=pos.y-1, z=pos.z })
autoroute_pipes({ x=pos.x , y=pos.y+1, z=pos.z })
autoroute_pipes({ x=pos.x , y=pos.y , z=pos.z-1 })
autoroute_pipes({ x=pos.x , y=pos.y , z=pos.z+1 })
autoroute_pipes(pos)
end
-- auto-rotation code for various devices the pipes attach to
function pipeworks.scan_pipe_surroundings(pos)
local pxm=0
local pxp=0
local pym=0
local pyp=0
local pzm=0
local pzp=0
local nxm = minetest.get_node({ x=pos.x-1, y=pos.y , z=pos.z })
local nxp = minetest.get_node({ x=pos.x+1, y=pos.y , z=pos.z })
local nym = minetest.get_node({ x=pos.x , y=pos.y-1, z=pos.z })
local nyp = minetest.get_node({ x=pos.x , y=pos.y+1, z=pos.z })
local nzm = minetest.get_node({ x=pos.x , y=pos.y , z=pos.z-1 })
local nzp = minetest.get_node({ x=pos.x , y=pos.y , z=pos.z+1 })
local nodetable = {
nxm = nxm,
nxp = nxp,
nym = nym,
nyp = nyp,
nzm = nzm,
nzp = nzp
}
-- standard handling for pipes...
if string.find(nxm.name, "pipeworks:pipe_") then pxm=1 end
if string.find(nxp.name, "pipeworks:pipe_") then pxp=1 end
if string.find(nym.name, "pipeworks:pipe_") then pym=1 end
if string.find(nyp.name, "pipeworks:pipe_") then pyp=1 end
if string.find(nzm.name, "pipeworks:pipe_") then pzm=1 end
if string.find(nzp.name, "pipeworks:pipe_") then pzp=1 end
-- Special handling for valves...
local match,a,b,c,d,e,f = pipeworks.get_axis_dir(nodetable, "pipeworks:valve")
if match then
pxm = a or pxm
pxp = b or pxp
pym = c or pym
pyp = d or pyp
pzm = e or pzm
pzp = f or pzp
end
-- ...flow sensors...
local match,a,b,c,d,e,f = pipeworks.get_axis_dir(nodetable, "pipeworks:flow_sensor")
if match then
pxm = a or pxm
pxp = b or pxp
pym = c or pym
pyp = d or pyp
pzm = e or pzm
pzp = f or pzp
end
-- ...sealed pipe entry/exit...
local match,a,b,c,d,e,f = pipeworks.get_axis_dir(nodetable, "pipeworks:entry_panel")
if match then
pxm = a or pxm
pxp = b or pxp
pym = c or pym
pyp = d or pyp
pzm = e or pzm
pzp = f or pzp
end
-- ...straight-only pipe...
local match,a,b,c,d,e,f = pipeworks.get_axis_dir(nodetable, "pipeworks:straight_pipe")
if match then
pxm = a or pxm
pxp = b or pxp
pym = c or pym
pyp = d or pyp
pzm = e or pzm
pzp = f or pzp
end
-- ... other nodes
local def_left = minetest.registered_nodes[nxp.name] -- the node that {pos} is to the left of (not the
local def_right = minetest.registered_nodes[nxm.name] -- ...note that is AT the left!), etc.
local def_bottom = minetest.registered_nodes[nyp.name]
local def_top = minetest.registered_nodes[nym.name]
local def_front = minetest.registered_nodes[nzp.name]
local def_back = minetest.registered_nodes[nzm.name]
if def_left and def_left.pipe_connections and def_left.pipe_connections.left
and (not def_left.pipe_connections.pattern or string.find(nxp.name, def_left.pipe_connections.pattern))
and (not def_left.pipe_connections.left_param2 or (nxp.param2 == def_left.pipe_connections.left_param2)) then
pxp = 1
end
if def_right and def_right.pipe_connections and def_right.pipe_connections.right
and (not def_right.pipe_connections.pattern or string.find(nxm.name, def_right.pipe_connections.pattern))
and (not def_right.pipe_connections.right_param2 or (nxm.param2 == def_right.pipe_connections.right_param2)) then
pxm = 1
end
if def_top and def_top.pipe_connections and def_top.pipe_connections.top
and (not def_top.pipe_connections.pattern or string.find(nym.name, def_top.pipe_connections.pattern))
and (not def_top.pipe_connections.top_param2 or (nym.param2 == def_top.pipe_connections.top_param2)) then
pym = 1
end
if def_bottom and def_bottom.pipe_connections and def_bottom.pipe_connections.bottom
and (not def_bottom.pipe_connections.pattern or string.find(nyp.name, def_bottom.pipe_connections.pattern))
and (not def_bottom.pipe_connections.bottom_param2 or (nyp.param2 == def_bottom.pipe_connections.bottom_param2)) then
pyp = 1
end
if def_front and def_front.pipe_connections and def_front.pipe_connections.front
and (not def_front.pipe_connections.pattern or string.find(nzp.name, def_front.pipe_connections.pattern))
and (not def_front.pipe_connections.front_param2 or (nzp.param2 == def_front.pipe_connections.front_param2)) then
pzp = 1
end
if def_back and def_back.pipe_connections and def_back.pipe_connections.back
and (not def_back.pipe_connections.pattern or string.find(nzm.name, def_back.pipe_connections.pattern))
and (not def_back.pipe_connections.back_param2 or (nzm.param2 == def_back.pipe_connections.back_param2)) then
pzm = 1
end
print("stage 2 returns "..pxm+8*pxp+2*pym+16*pyp+4*pzm+32*pzp..
" for nodes surrounding "..minetest.get_node(pos).name.." at "..minetest.pos_to_string(pos))
return pxm+8*pxp+2*pym+16*pyp+4*pzm+32*pzp
end
function pipeworks.look_for_stackable_tanks(pos)
local tym = minetest.get_node({ x=pos.x , y=pos.y-1, z=pos.z })
if string.find(tym.name, "pipeworks:storage_tank_") ~= nil or
string.find(tym.name, "pipeworks:expansion_tank_") ~= nil then
minetest.add_node(pos, { name = "pipeworks:expansion_tank_0", param2 = tym.param2})
end
end