commit 3a1bf374fe75fe2d200a95057e6c5f8b4881bc5d
Author: Jeija <norrepli@gmail.com>
Date:   Sun Jan 20 00:03:51 2013 +0100

    Initial Upload

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b25c15b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*~
diff --git a/digilines/depends.txt b/digilines/depends.txt
new file mode 100644
index 0000000..4ad96d5
--- /dev/null
+++ b/digilines/depends.txt
@@ -0,0 +1 @@
+default
diff --git a/digilines/init.lua b/digilines/init.lua
new file mode 100644
index 0000000..b794b9e
--- /dev/null
+++ b/digilines/init.lua
@@ -0,0 +1,16 @@
+digiline = {}
+dofile(minetest.get_modpath("digilines").."/presetrules.lua")
+dofile(minetest.get_modpath("digilines").."/util.lua")
+dofile(minetest.get_modpath("digilines").."/internal.lua")
+dofile(minetest.get_modpath("digilines").."/wires_common.lua")
+dofile(minetest.get_modpath("digilines").."/wire_std.lua")
+
+function digiline:receptor_send(pos, rules, channel, msg)
+	local checked = {}
+	checked[tostring(pos.x).."_"..tostring(pos.y).."_"..tostring(pos.z)] = true -- exclude itself
+	for _,rule in ipairs(rules) do
+		if digiline:rules_link(pos, digiline:addPosRule(pos, rule)) then
+			digiline:transmit(digiline:addPosRule(pos, rule), channel, msg, checked)
+		end
+	end
+end
diff --git a/digilines/internal.lua b/digilines/internal.lua
new file mode 100644
index 0000000..ce4012c
--- /dev/null
+++ b/digilines/internal.lua
@@ -0,0 +1,94 @@
+function digiline:getspec(node)
+	if not minetest.registered_nodes[node.name] then return false end
+	return minetest.registered_nodes[node.name].digiline
+end
+
+function digiline:importrules(spec, node)
+	if type(spec) == 'function' then
+		return spec(node)
+	elseif spec then
+		return spec
+	else
+		return digiline.rules.default
+	end
+end
+
+function digiline:getAnyInputRules(pos)
+	local node = minetest.env:get_node(pos)
+	spec = digiline:getspec(node)
+	if not spec then return end
+
+	if spec.wire then
+		return digiline:importrules(spec.wire.rules, node)
+	end
+	if spec.effector then
+		return digiline:importrules(spec.effector.rules, node)
+	end
+
+	return rules
+end
+
+function digiline:getAnyOutputRules(pos)
+	local node = minetest.env:get_node(pos)
+	spec = digiline:getspec(node)
+	if not spec then return end
+
+	if spec.wire then
+		return digiline:importrules(spec.wire.rules, node)
+	end
+	if spec.receptor then
+		return digiline:importrules(spec.receptor.rules, node)
+	end
+end
+
+function digiline:rules_link(output, input)
+	local outputrules = digiline:getAnyOutputRules(output)
+	local inputrules  = digiline:getAnyInputRules (input)
+
+	if not outputrules or not inputrules then return false end
+
+
+	for _, orule in ipairs(outputrules) do
+		if digiline:cmpPos(digiline:addPosRule(output, orule), input) then
+			for _, irule in ipairs(inputrules) do
+				if digiline:cmpPos(digiline:addPosRule(input, irule), output) then
+					return true
+				end
+			end
+		end
+	end
+	return false
+end
+
+function digiline:rules_link_anydir(output, input)
+	return digiline:rules_link(output, input)
+	or     digiline:rules_link(input, output)
+end
+
+function digiline:transmit(pos, channel, msg, checked)
+	checked = checked or {}
+	local checkedid = tostring(pos.x).."_"..tostring(pos.y).."_"..tostring(pos.z)
+	if checked[checkedid] then return checked end
+	checked[checkedid] = true
+
+	local node = minetest.env:get_node(pos)
+	local spec = digiline:getspec(node)
+	if not spec then return end
+
+
+	-- Effector actions --> Receive
+	if spec.effector then
+		spec.effector.action(pos, node, channel, msg)
+	end
+
+	-- Cable actions --> Transmit
+	if spec.wire then
+		local rules = digiline:importrules(spec.wire.rules, node)
+		for _,rule in ipairs(rules) do
+			if digiline:rules_link(pos, digiline:addPosRule(pos, rule)) then
+				checked = digiline:transmit(digiline:addPosRule(pos, rule), channel, msg, checked)
+			end
+		end
+	end
+	return checked
+end
diff --git a/digilines/presetrules.lua b/digilines/presetrules.lua
new file mode 100644
index 0000000..8d5e35b
--- /dev/null
+++ b/digilines/presetrules.lua
@@ -0,0 +1,15 @@
+digiline.rules = {}
+
+digiline.rules.default = 
+{{x=0,  y=0,  z=-1},
+{x=1,  y=0,  z=0},
+{x=-1, y=0,  z=0},
+{x=0,  y=0,  z=1},
+{x=1,  y=1,  z=0},
+{x=1,  y=-1, z=0},
+{x=-1, y=1,  z=0},
+{x=-1, y=-1, z=0},
+{x=0,  y=1,  z=1},
+{x=0,  y=-1, z=1},
+{x=0,  y=1,  z=-1},
+{x=0,  y=-1, z=-1}}
diff --git a/digilines/textures/digiline_std.png b/digilines/textures/digiline_std.png
new file mode 100644
index 0000000..721797c
Binary files /dev/null and b/digilines/textures/digiline_std.png differ
diff --git a/digilines/textures/digiline_std_bump.png b/digilines/textures/digiline_std_bump.png
new file mode 100644
index 0000000..068a4a9
Binary files /dev/null and b/digilines/textures/digiline_std_bump.png differ
diff --git a/digilines/textures/digiline_std_inv.png b/digilines/textures/digiline_std_inv.png
new file mode 100644
index 0000000..f66f6c7
Binary files /dev/null and b/digilines/textures/digiline_std_inv.png differ
diff --git a/digilines/textures/digiline_std_vertical.png b/digilines/textures/digiline_std_vertical.png
new file mode 100644
index 0000000..1de0ead
Binary files /dev/null and b/digilines/textures/digiline_std_vertical.png differ
diff --git a/digilines/util.lua b/digilines/util.lua
new file mode 100644
index 0000000..dad6579
--- /dev/null
+++ b/digilines/util.lua
@@ -0,0 +1,52 @@
+function digiline:addPosRule(p, r)
+	return {x = p.x + r.x, y = p.y + r.y, z = p.z + r.z}
+end
+
+function digiline:cmpPos(p1, p2)
+	return (p1.x == p2.x and p1.y == p2.y and p1.z == p2.z)
+end
+
+--Rules rotation Functions:
+function digiline:rotate_rules_right(rules)
+	local nr={}
+	for i, rule in ipairs(rules) do
+		nr[i]={}
+		nr[i].z=rule.x
+		nr[i].x=-rule.z
+		nr[i].y=rule.y
+	end
+	return nr
+end
+
+function digiline:rotate_rules_left(rules)
+	local nr={}
+	for i, rule in ipairs(rules) do
+		nr[i]={}
+		nr[i].z=-rules[i].x
+		nr[i].x=rules[i].z
+		nr[i].y=rules[i].y
+	end
+	return nr
+end
+
+function digiline:rotate_rules_down(rules)
+	local nr={}
+	for i, rule in ipairs(rules) do
+		nr[i]={}
+		nr[i].y=rule.x
+		nr[i].x=-rule.y
+		nr[i].z=rule.z
+	end
+	return nr
+end
+
+function digiline:rotate_rules_up(rules)
+	local nr={}
+	for i, rule in ipairs(rules) do
+		nr[i]={}
+		nr[i].y=-rule.x
+		nr[i].x=rule.y
+		nr[i].z=rule.z
+	end
+	return nr
+end
diff --git a/digilines/wire_std.lua b/digilines/wire_std.lua
new file mode 100644
index 0000000..32645e9
--- /dev/null
+++ b/digilines/wire_std.lua
@@ -0,0 +1,117 @@
+-- naming scheme: wire:(xp)(zp)(xm)(zm)_on/off
+-- The conditions in brackets define whether there is a digiline at that place or not
+-- 1 = there is one; 0 = there is none
+-- y always means y+
+
+box_center = {-1/16, -.5, -1/16, 1/16, -.5+1/16, 1/16}
+box_bump1 =  { -2/16, -8/16,  -2/16, 2/16, -13/32, 2/16 }
+box_bump2 =  { -3/32, -13/32, -3/32, 3/32, -12/32, 3/32 }
+
+box_xp = {1/16, -.5, -1/16, 8/16, -.5+1/16, 1/16}
+box_zp = {-1/16, -.5, 1/16, 1/16, -.5+1/16, 8/16}
+box_xm = {-8/16, -.5, -1/16, -1/16, -.5+1/16, 1/16}
+box_zm = {-1/16, -.5, -8/16, 1/16, -.5+1/16, -1/16}
+
+box_xpy = {.5-1/16, -.5+1/16, -1/16, .5, .4999+1/16, 1/16}
+box_zpy = {-1/16, -.5+1/16, .5-1/16, 1/16, .4999+1/16, .5}
+box_xmy = {-.5, -.5+1/16, -1/16, -.5+1/16, .4999+1/16, 1/16}
+box_zmy = {-1/16, -.5+1/16, -.5, 1/16, .4999+1/16, -.5+1/16}
+
+for xp=0, 1 do
+for zp=0, 1 do
+for xm=0, 1 do
+for zm=0, 1 do
+for xpy=0, 1 do
+for zpy=0, 1 do
+for xmy=0, 1 do
+for zmy=0, 1 do
+	if (xpy == 1 and xp == 0) or (zpy == 1 and zp == 0) 
+	or (xmy == 1 and xm == 0) or (zmy == 1 and zm == 0) then break end
+
+	local groups
+	local nodeid = 	tostring(xp )..tostring(zp )..tostring(xm )..tostring(zm )..
+			tostring(xpy)..tostring(zpy)..tostring(xmy)..tostring(zmy)
+
+	if nodeid == "00000000" then
+		groups = {dig_immediate = 3}
+		wiredesc = "Digiline"
+	else
+		groups = {dig_immediate = 3, not_in_creative_inventory = 1}
+	end
+
+	local nodebox = {}
+	local adjx = false
+	local adjz = false
+	if xp == 1 then table.insert(nodebox, box_xp) adjx = true end
+	if zp == 1 then table.insert(nodebox, box_zp) adjz = true end
+	if xm == 1 then table.insert(nodebox, box_xm) adjx = true end
+	if zm == 1 then table.insert(nodebox, box_zm) adjz = true end
+	if xpy == 1 then table.insert(nodebox, box_xpy) end
+	if zpy == 1 then table.insert(nodebox, box_zpy) end
+	if xmy == 1 then table.insert(nodebox, box_xmy) end
+	if zmy == 1 then table.insert(nodebox, box_zmy) end
+
+	if adjx and adjz and (xp + zp + xm + zm > 2) then
+		table.insert(nodebox, box_bump1)
+		table.insert(nodebox, box_bump2)
+		tiles = {
+			"digiline_std_bump.png",
+			"digiline_std_bump.png",
+			"digiline_std_vertical.png",
+			"digiline_std_vertical.png",
+			"digiline_std_vertical.png",
+			"digiline_std_vertical.png"
+		}
+	else
+		table.insert(nodebox, box_center)
+		tiles = {
+			"digiline_std.png",
+			"digiline_std.png",
+			"digiline_std_vertical.png",
+			"digiline_std_vertical.png",
+			"digiline_std_vertical.png",
+			"digiline_std_vertical.png"
+		}
+	end
+
+	if nodeid == "00000000" then
+		nodebox = {-8/16, -.5, -1/16, 8/16, -.5+1/16, 1/16}
+	end
+
+	minetest.register_node("digilines:wire_std_"..nodeid, {
+		description = wiredesc,
+		drawtype = "nodebox",
+		tiles = tiles,
+		inventory_image = "digiline_std_inv.png",
+		wield_image = "digiline_std_inv.png",
+		paramtype = "light",
+		paramtype2 = "facedir",
+		sunlight_propagates = true,
+		digiline = 
+		{
+			wire = 
+			{
+				basename = "digilines:wire_std_"
+			}
+		},
+		selection_box = {
+              	type = "fixed",
+			fixed = {-.5, -.5, -.5, .5, -.5+1/16, .5}
+		},
+		node_box = {
+			type = "fixed",
+			fixed = nodebox
+		},
+		groups = groups,
+		walkable = false,
+		stack_max = 99,
+		drop = "digilines:wire_std_00000000"
+	})
+end
+end
+end
+end
+end
+end
+end
+end
diff --git a/digilines/wires_common.lua b/digilines/wires_common.lua
new file mode 100644
index 0000000..4370241
--- /dev/null
+++ b/digilines/wires_common.lua
@@ -0,0 +1,84 @@
+minetest.register_on_placenode(function(pos, node)
+	if minetest.registered_nodes[node.name].digiline then
+		digiline:update_autoconnect(pos)
+	end
+end)
+
+minetest.register_on_dignode(function(pos, node)
+	if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].digiline then
+-- need to make sure that node exists (unknown nodes!)
+		digiline:update_autoconnect(pos)
+	end
+end)
+
+function digiline:update_autoconnect(pos, secondcall)
+	local xppos = {x=pos.x+1, y=pos.y, z=pos.z}
+	local zppos = {x=pos.x, y=pos.y, z=pos.z+1}
+	local xmpos = {x=pos.x-1, y=pos.y, z=pos.z}
+	local zmpos = {x=pos.x, y=pos.y, z=pos.z-1}
+	local xpympos = {x=pos.x+1, y=pos.y-1, z=pos.z}
+	local zpympos = {x=pos.x, y=pos.y-1, z=pos.z+1}
+	local xmympos = {x=pos.x-1, y=pos.y-1, z=pos.z}
+	local zmympos = {x=pos.x, y=pos.y-1, z=pos.z-1}
+	local xpypos = {x=pos.x+1, y=pos.y+1, z=pos.z}
+	local zpypos = {x=pos.x, y=pos.y+1, z=pos.z+1}
+	local xmypos = {x=pos.x-1, y=pos.y+1, z=pos.z}
+	local zmypos = {x=pos.x, y=pos.y+1, z=pos.z-1}
+
+	if secondcall == nil then
+		digiline:update_autoconnect(xppos, true)
+		digiline:update_autoconnect(zppos, true)
+		digiline:update_autoconnect(xmpos, true)
+		digiline:update_autoconnect(zmpos, true)
+
+		digiline:update_autoconnect(xpypos, true)
+		digiline:update_autoconnect(zpypos, true)
+		digiline:update_autoconnect(xmypos, true)
+		digiline:update_autoconnect(zmypos, true)
+
+		digiline:update_autoconnect(xpympos, true)
+		digiline:update_autoconnect(zpympos, true)
+		digiline:update_autoconnect(xmympos, true)
+		digiline:update_autoconnect(zmympos, true)
+	end
+
+	local digilinespec = minetest.registered_nodes[minetest.env:get_node(pos).name].digiline
+	if not digilinespec then return nil end
+	if not digilinespec.wire then return nil end
+
+	local zmg = 	digiline:rules_link_anydir(pos, zmpos)
+	local zmymg = 	digiline:rules_link_anydir(pos, zmympos)
+	local xmg = 	digiline:rules_link_anydir(pos, xmpos)
+	local xmymg = 	digiline:rules_link_anydir(pos, xmympos)
+	local zpg = 	digiline:rules_link_anydir(pos, zppos)
+	local zpymg = 	digiline:rules_link_anydir(pos, zpympos)
+	local xpg = 	digiline:rules_link_anydir(pos, xppos)
+	local xpymg = 	digiline:rules_link_anydir(pos, xpympos)
+
+
+	local xpyg = digiline:rules_link_anydir(pos, xpypos)
+	local zpyg = digiline:rules_link_anydir(pos, zpypos)
+	local xmyg = digiline:rules_link_anydir(pos, xmypos)
+	local zmyg = digiline:rules_link_anydir(pos, zmypos)
+
+	if zmg or zmymg then zm = 1 else zm = 0 end
+	if xmg or xmymg then xm = 1 else xm = 0 end
+	if zpg or zpymg then zp = 1 else zp = 0 end
+	if xpg or xpymg then xp = 1 else xp = 0 end
+
+	if xpyg then xpy = 1 else xpy = 0 end
+	if zpyg then zpy = 1 else zpy = 0 end
+	if xmyg then xmy = 1 else xmy = 0 end
+	if zmyg then zmy = 1 else zmy = 0 end
+
+	if xpy == 1 then xp = 1 end
+	if zpy == 1 then zp = 1 end
+	if xmy == 1 then xm = 1 end
+	if zmy == 1 then zm = 1 end
+
+	local nodeid = 	tostring(xp )..tostring(zp )..tostring(xm )..tostring(zm )..
+				tostring(xpy)..tostring(zpy)..tostring(xmy)..tostring(zmy)
+
+
+	minetest.env:set_node(pos, {name = digilinespec.wire.basename..nodeid})
+end
diff --git a/modpack.txt b/modpack.txt
new file mode 100644
index 0000000..e69de29