Added pneumatic tubes with their own autoplace code (does not connect to

steel pipes).  Fixed a recursion bug that sometimes caused a stack overflow.

1 files changed, 198 insertions, 0 deletions

diff --git a/tubes.lua b/tubes.lua
new file mode 100644
index 0000000..fb606a0
--- /dev/null
+++ b/tubes.lua
@@ -0,0 +1,198 @@
+-- This file supplies pneumatic tubes.
+
+-- tables
+
+minetest.register_alias("pipeworks:tube", "pipeworks:tube_000000")
+
+tube_leftstub = {
+	{ -32/64, -9/64, -9/64, 9/64, 9/64, 9/64 },	-- tube segment against -X face
+}
+
+tube_rightstub = {
+	{ -9/64, -9/64, -9/64,  32/64, 9/64, 9/64 },	-- tube segment against +X face
+}
+
+tube_bottomstub = {
+	{ -9/64, -32/64, -9/64,   9/64, 9/64, 9/64 },	-- tube segment against -Y face
+}
+
+
+tube_topstub = {
+	{ -9/64, -9/64, -9/64,   9/64, 32/64, 9/64 },	-- tube segment against +Y face
+}
+
+tube_frontstub = {
+	{ -9/64, -9/64, -32/64,   9/64, 9/64, 9/64 },	-- tube segment against -Z face
+}
+
+tube_backstub = {
+	{ -9/64, -9/64, -9/64,   9/64, 9/64, 32/64 },	-- tube segment against -Z face
+} 
+
+tube_selectboxes = {
+	{ -32/64,  -10/64,  -10/64,  10/64,  10/64,  10/64 },
+	{ -10/64 ,  -10/64,  -10/64, 32/64,  10/64,  10/64 },
+	{ -10/64 , -32/64,  -10/64,  10/64,  10/64,  10/64 },
+	{ -10/64 ,  -10/64,  -10/64,  10/64, 32/64,  10/64 },
+	{ -10/64 ,  -10/64, -32/64,  10/64,  10/64,  10/64 },
+	{ -10/64 ,  -10/64,  -10/64,  10/64,  10/64, 32/64 }
+}
+
+--  Functions
+
+function tube_addbox(t, b)
+	for i in ipairs(b)
+		do table.insert(t, b[i])
+	end
+end
+
+-- now define the nodes!
+
+for xm = 0, 1 do
+for xp = 0, 1 do
+for ym = 0, 1 do
+for yp = 0, 1 do
+for zm = 0, 1 do
+for zp = 0, 1 do
+	local outboxes = {}
+	local outsel = {}
+	local outimgs = {}
+
+	if yp==1 then
+		tube_addbox(outboxes, tube_topstub)
+		table.insert(outsel, tube_selectboxes[4])
+		table.insert(outimgs, "pipeworks_tube_noctr.png")
+	else
+		table.insert(outimgs, "pipeworks_tube_plain.png")
+	end
+	if ym==1 then
+		tube_addbox(outboxes, tube_bottomstub)
+		table.insert(outsel, tube_selectboxes[3])
+		table.insert(outimgs, "pipeworks_tube_noctr.png")
+	else
+		table.insert(outimgs, "pipeworks_tube_plain.png")
+	end
+	if xp==1 then
+		tube_addbox(outboxes, tube_rightstub)
+		table.insert(outsel, tube_selectboxes[2])
+		table.insert(outimgs, "pipeworks_tube_noctr.png")
+	else
+		table.insert(outimgs, "pipeworks_tube_plain.png")
+	end
+	if xm==1 then
+		tube_addbox(outboxes, tube_leftstub)
+		table.insert(outsel, tube_selectboxes[1])
+		table.insert(outimgs, "pipeworks_tube_noctr.png")
+	else
+		table.insert(outimgs, "pipeworks_tube_plain.png")
+	end
+	if zp==1 then
+		tube_addbox(outboxes, tube_backstub)
+		table.insert(outsel, tube_selectboxes[6])
+		table.insert(outimgs, "pipeworks_tube_noctr.png")
+	else
+		table.insert(outimgs, "pipeworks_tube_plain.png")
+	end
+	if zm==1 then
+		tube_addbox(outboxes, tube_frontstub)
+		table.insert(outsel, tube_selectboxes[5])
+		table.insert(outimgs, "pipeworks_tube_noctr.png")
+	else
+		table.insert(outimgs, "pipeworks_tube_plain.png")
+	end
+
+	local jx = xp+xm
+	local jy = yp+ym
+	local jz = zp+zm
+
+	if (jx+jy+jz) == 1 then
+		if xm == 1 then 
+			table.remove(outimgs, 3)
+			table.insert(outimgs, 3, "pipeworks_tube_end.png")
+		end
+		if xp == 1 then 
+			table.remove(outimgs, 4)
+			table.insert(outimgs, 4, "pipeworks_tube_end.png")
+		end
+		if ym == 1 then 
+			table.remove(outimgs, 1)
+			table.insert(outimgs, 1, "pipeworks_tube_end.png")
+		end
+		if xp == 1 then 
+			table.remove(outimgs, 2)
+			table.insert(outimgs, 2, "pipeworks_tube_end.png")
+		end
+		if zm == 1 then 
+			table.remove(outimgs, 5)
+			table.insert(outimgs, 5, "pipeworks_tube_end.png")
+		end
+		if zp == 1 then 
+			table.remove(outimgs, 6)
+			table.insert(outimgs, 6, "pipeworks_tube_end.png")
+		end
+	end
+
+	local tname = xm..xp..ym..yp..zm..zp
+	local tgroups = ""
+
+	if tname ~= "000000" then
+		tgroups = {snappy=3, tube=1, not_in_creative_inventory=1}
+		tubedesc = "Pneumatic tube segment ("..tname..")... You hacker, you."
+		iimg=nil
+	else
+		tgroups = {snappy=3, tube=1}
+		tubedesc = "Pneumatic tube segment"
+		iimg="pipeworks_tube_inv.png"
+		outimgs = {
+			"pipeworks_tube_short.png",
+			"pipeworks_tube_short.png",
+			"pipeworks_tube_end.png",
+			"pipeworks_tube_end.png",
+			"pipeworks_tube_short.png",
+			"pipeworks_tube_short.png"
+		}
+		outboxes = { -24/64, -9/64, -9/64, 24/64, 9/64, 9/64 }
+		outsel = { -24/64, -10/64, -10/64, 24/64, 10/64, 10/64 }
+	end
+	
+	minetest.register_node("pipeworks:tube_"..tname, {
+		description = tubedesc,
+		drawtype = "nodebox",
+		tiles = outimgs,
+		inventory_image=iimg,
+		wield_image=iimg,
+		paramtype = "light",
+		selection_box = {
+	             	type = "fixed",
+			fixed = outsel
+		},
+		node_box = {
+			type = "fixed",
+			fixed = outboxes
+		},
+		groups = tgroups,
+		sounds = default.node_sound_wood_defaults(),
+		walkable = true,
+		stack_max = 99,
+		drop = "pipeworks:tube_000000",
+		tubelike=1,
+		on_construct = function(pos)
+		local meta = minetest.env:get_meta(pos)
+		meta:set_int("tubelike",1)
+		end,
+		after_place_node = function(pos)
+			tube_scanforobjects(pos)
+		end,
+		after_dig_node = function(pos)
+			tube_scanforobjects(pos)
+		end
+	})
+
+end
+end
+end
+end
+end
+end
+
+print("pipeworks loaded!")