add screwdriver rotation handling on most pipes-related nodes

caveats:  in order to cleanly handle the entry panel, valve, and sensor
I had to rotate the valve and sensor models 90 degrees
so that their in-/outlet pipes point the same direction as the
entry panel.

This also enables proper handling of a valve or sensor turned vertically.

Some objects have rotation disabled entirely (as flipping them over/around makes
no sense)

When a valve is rotated, it is turned off automatically, to work around a glitch in
the rotation code.

1 files changed, 18 insertions, 5 deletions

diff --git a/flowing_logic.lua b/flowing_logic.lua
index 5166b15..e1c0bf5 100644
--- a/flowing_logic.lua
+++ b/flowing_logic.lua
@@ -31,19 +31,32 @@ pipeworks.check_for_inflows = function(pos,node)
 		{x=pos.x-1,y=pos.y,z=pos.z},
 		{x=pos.x+1,y=pos.y,z=pos.z},
 		{x=pos.x,y=pos.y,z=pos.z-1},
-		{x=pos.x,y=pos.y,z=pos.z+1},	}
+		{x=pos.x,y=pos.y,z=pos.z+1},
+	}
 	local newnode = false
 	local source = false
-	for i =1,6 do
+	for i = 1, 6 do
 		if newnode then break end
-		local name = minetest.get_node(coords[i]).name
+		local testnode = minetest.get_node(coords[i])
+		local name = testnode.name
 		if name and (name == "pipeworks:pump_on" and pipeworks.check_for_liquids(coords[i])) or string.find(name,"_loaded") then
 			if string.find(name,"_loaded") then
 				source = minetest.get_meta(coords[i]):get_string("source")
 				if source == minetest.pos_to_string(pos) then break end
 			end
-			newnode = string.gsub(node.name,"empty","loaded")
-			source = {x=coords[i].x,y=coords[i].y,z=coords[i].z}
+			if string.find(name, "valve") or string.find(name, "sensor") then
+
+				if ((i == 3 or i == 4) and minetest.facedir_to_dir(testnode.param2).x ~= 0)
+				  or ((i == 5 or i == 6) and minetest.facedir_to_dir(testnode.param2).z ~= 0)
+				  or ((i == 1 or i == 2) and minetest.facedir_to_dir(testnode.param2).y ~= 0) then
+
+					newnode = string.gsub(node.name,"empty","loaded")
+					source = {x=coords[i].x,y=coords[i].y,z=coords[i].z}
+				end
+			else
+				newnode = string.gsub(node.name,"empty","loaded")
+				source = {x=coords[i].x,y=coords[i].y,z=coords[i].z}
+			end
 		end
 	end
 	if newnode then