Pipeworks
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-- This file adds placement rules for signs_lib, if present
local spv = {
[4] = true,
[6] = true,
[8] = true,
[10] = true,
[13] = true,
[15] = true,
[17] = true,
[19] = true
}
local sphns = {
[1] = true,
[3] = true,
[5] = true,
[7] = true,
[9] = true,
[11] = true,
[21] = true,
[23] = true
}
local sphew = {
[0] = true,
[2] = true,
[12] = true,
[14] = true,
[16] = true,
[18] = true,
[20] = true,
[22] = true
}
local owtv = {
[5] = true,
[7] = true,
[9] = true,
[11] = true,
[12] = true,
[14] = true,
[16] = true,
[18] = true
}
local owtns = {
[0] = true,
[2] = true,
[4] = true,
[6] = true,
[8] = true,
[10] = true,
[20] = true,
[22] = true
}
local owtew = {
[1] = true,
[3] = true,
[13] = true,
[15] = true,
[17] = true,
[19] = true,
[21] = true,
[23] = true
}
local vert_n = {
[3] = {[5] = true},
[6] = {[9] = true, [12] = true, [16] = true},
[7] = {[9] = true, [11] = true},
}
local vert_e = {
[3] = {[5] = true},
[6] = {[5] = true, [9] = true, [16] = true},
[7] = {[7] = true, [11] = true},
}
local vert_s = {
[3] = {[5] = true},
[6] = {[5] = true, [12] = true, [16] = true},
[7] = {[5] = true, [7] = true},
}
local vert_w = {
[3] = {[5] = true},
[6] = {[5] = true, [9] = true, [12] = true},
[7] = {[5] = true, [9] = true},
}
local horiz_n = {
[3] = {[0] = true},
[6] = {[0] = true, [4] = true, [20] = true},
[7] = {[2] = true, [10] = true},
[8] = {[0] = true},
[9] = {[2] = true},
}
local horiz_e = {
[3] = {[1] = true},
[6] = {[1] = true, [17] = true, [21] = true},
[7] = {[3] = true, [19] = true},
[8] = {[1] = true},
[9] = {[3] = true},
}
local horiz_s = {
[3] = {[0] = true},
[6] = {[0] = true, [8] = true, [20] = true},
[7] = {[0] = true, [4] = true},
[8] = {[0] = true},
[9] = {[0] = true},
}
local horiz_w = {
[3] = {[1] = true},
[6] = {[1] = true, [13] = true, [21] = true},
[7] = {[1] = true, [13] = true},
[8] = {[1] = true},
[9] = {[1] = true},
}
local function get_sign_dir(node, def)
if (node.param2 == 4 and def.paramtype2 == "wallmounted")
or (node.param2 == 0 and def.paramtype2 ~= "wallmounted") then
return {["N"] = true}
elseif (node.param2 == 2 and def.paramtype2 == "wallmounted")
or (node.param2 == 1 and def.paramtype2 ~= "wallmounted") then
return {["E"] = true}
elseif (node.param2 == 5 and def.paramtype2 == "wallmounted")
or (node.param2 == 2 and def.paramtype2 ~= "wallmounted") then
return {["S"] = true}
elseif node.param2 == 3 then
return {["W"] = true}
end
return {}
end
--[[
In the functions below:
pos: the (real) position of the placed sign
node: the sign node itself
def: its definition
ppos: the position of the pointed node (pipe/tube)
pnode: the node itself
pdef: its definition
--]]
-- pipes
function pipeworks.check_for_vert_pipe(pos, node, def, ppos, pnode, pdef)
local signdir = get_sign_dir(node, def)
local pipenumber = pdef.pipenumber
local pipedir = pnode.param2
if string.find(pnode.name, "straight_pipe") and spv[pipedir] then
return true
elseif signdir["N"] and vert_n[pipenumber] and vert_n[pipenumber][pipedir] then
return true
elseif signdir["E"] and vert_e[pipenumber] and vert_e[pipenumber][pipedir] then
return true
elseif signdir["S"] and vert_s[pipenumber] and vert_s[pipenumber][pipedir] then
return true
elseif signdir["W"] and vert_w[pipenumber] and vert_w[pipenumber][pipedir] then
return true
end
end
function pipeworks.check_for_horiz_pipe(pos, node, def, ppos, pnode, pdef)
local signdir = get_sign_dir(node, def)
local pipenumber = pdef.pipenumber
local pipedir = pnode.param2
if string.find(pnode.name, "straight_pipe") then
if (signdir["N"] or signdir["S"]) and sphns[pipedir] then
return true
elseif (signdir["E"] or signdir["W"]) and sphew[pipedir] then
return true
end
elseif signdir["N"] and horiz_n[pipenumber] and horiz_n[pipenumber][pipedir] then
return true
elseif signdir["E"] and horiz_e[pipenumber] and horiz_e[pipenumber][pipedir] then
return true
elseif signdir["S"] and horiz_s[pipenumber] and horiz_s[pipenumber][pipedir] then
return true
elseif signdir["W"] and horiz_w[pipenumber] and horiz_w[pipenumber][pipedir] then
return true
end
end
-- tubes
function pipeworks.check_for_vert_tube(pos, node, def, ppos, pnode, pdef)
local signdir = get_sign_dir(node, def)
local tubenumber = pdef.tubenumber
local tubedir = pnode.param2
if pnode.name == "pipeworks:one_way_tube" and owtv[tubedir] then
return true
elseif tubenumber == 2 and (tubedir == 5 or tubedir == 7) then -- it's a stub pointing up or down
return true
elseif signdir["N"] and vert_n[tubenumber] and vert_n[tubenumber][tubedir] then
return true
elseif signdir["E"] and vert_e[tubenumber] and vert_e[tubenumber][tubedir] then
return true
elseif signdir["S"] and vert_s[tubenumber] and vert_s[tubenumber][tubedir] then
return true
elseif signdir["W"] and vert_w[tubenumber] and vert_w[tubenumber][tubedir] then
return true
end
end
function pipeworks.check_for_horiz_tube(pos, node, def, ppos, pnode, pdef)
local signdir = get_sign_dir(node, def)
local tubenumber = pdef.tubenumber
local tubedir = pnode.param2
if tubenumber == 2 then -- it'a a stub pointing sideways
if (tubedir == 0 or tubedir == 2) and (signdir["N"] or signdir["S"]) then
return true
elseif (tubedir == 1 or tubedir == 3) and (signdir["E"] or signdir["W"]) then
return true
end
elseif pnode.name == "pipeworks:one_way_tube" then
if (signdir["N"] or signdir["S"]) and owtns[tubedir] then
return true
elseif (signdir["E"] or signdir["W"]) and owtew[tubedir] then
return true
end
elseif signdir["N"] and horiz_n[tubenumber] and horiz_n[tubenumber][tubedir] then
return true
elseif signdir["E"] and horiz_e[tubenumber] and horiz_e[tubenumber][tubedir] then
return true
elseif signdir["S"] and horiz_s[tubenumber] and horiz_s[tubenumber][tubedir] then
return true
elseif signdir["W"] and horiz_w[tubenumber] and horiz_w[tubenumber][tubedir] then
return true
end
end