Add in basic buildtest pipe

mods/buildtest/init.lua

@@ -0,0 +1,40 @@
+minetest.register_node("buildtest:glass_pipe", {
+	description = "Glass Pipe",
+	tiles = {"glass_pipe.png"},
+	groups = {stone = 1, hard = 1, pickaxe = 1, hand = 4},
+	sounds = main.stoneSound(),
+	drawtype = "nodebox",
+	paramtype = "light",
+	sunlight_propagates = true,
+	connects_to = {"buildtest:glass_pipe","hopper:hopper"},
+	node_box = {
+		type = "connected",
+		-- {x1, y1, z1, x2, y2, z2}
+		disconnected  = {
+			{-3/16,-3/16,-3/16,3/16,3/16,3/16}
+			},
+		connect_top = {
+			{-3/16,-3/16,-3/16,3/16,8/16,3/16}
+			},
+		connect_bottom = {
+			{-3/16,-8/16,-3/16,3/16,3/16,3/16}
+			},
+			
+			
+		connect_left = {
+			{-8/16,-3/16,-3/16,3/16,3/16,3/16}
+			},
+		connect_right = {
+			{-3/16,-3/16,-3/16,8/16,3/16,3/16}
+			},
+			
+			
+		connect_front = {
+			{-3/16,-3/16,-8/16,3/16,3/16,3/16}
+			},
+		
+		connect_back = {
+			{-3/16,-3/16,-3/16,3/16,3/16,8/16}
+			},
+	},
+})