tried to fix detection of latest version of technic mod.

limited the number of recipes affected by it - now only the tubes' recipes
are disabled when technic is present.  All pipes, pipe devices, and tube
devices are available at all times.

updated the plastic sheet crafting chain to match current homedecor

crafts.lua

@@ -1,24 +1,141 @@
--- Crafting recipes for pipeworks
+-- Crafting recipes for pipes
 
--- If the technic mod is present, then don't bother registering these recipes
--- as that mod supplies its own.
+minetest.register_craft( {
+        output = "pipeworks:pipe_110000_empty 12",
+        recipe = {
+                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
+                { "", "", "" },
+                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+        },
+})
 
-if io.open(minetest.get_modpath("pipeworks").."/../technic/init.lua", "r") == nil then
+minetest.register_craft( {
+        output = "pipeworks:spigot 3",
+        recipe = {
+                { "pipeworks:pipe_110000_empty", "" },
+                { "", "pipeworks:pipe_110000_empty" },
+        },
+})
 
-	-- If homedecor is not installed, we need to register a few of its crafts
-	-- manually so we can use them.
+minetest.register_craft( {
+	output = "pipeworks:entry_panel 2",
+	recipe = {
+		{ "", "default:steel_ingot", "" },
+	        { "", "pipeworks:pipe_110000_empty", "" },
+		{ "", "default:steel_ingot", "" },
+	},
+})
 
-	if minetest.get_modpath("homedecor") == nil then
+-- Various ancillary pipe devices
+
+minetest.register_craft( {
+        output = "pipeworks:pump_off 2",
+        recipe = {
+                { "default:stone", "default:steel_ingot", "default:stone" },
+                { "moreores:copper_ingot", "default:mese_crystal_fragment", "moreores:copper_ingot" },
+                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+        },
+})
+
+minetest.register_craft( {
+        output = "pipeworks:valve_off 2",
+        recipe = {
+                { "", "default:stick", "" },
+                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
+                { "", "default:steel_ingot", "" }
+        },
+})
+
+minetest.register_craft( {
+        output = "pipeworks:storage_tank_0 2",
+        recipe = {
+                { "", "default:steel_ingot", "default:steel_ingot" },
+                { "default:steel_ingot", "default:glass", "default:steel_ingot" },
+                { "default:steel_ingot", "default:steel_ingot", "" }
+        },
+})
+
+minetest.register_craft( {
+        output = "pipeworks:grating 2",
+        recipe = {
+                { "default:steel_ingot", "", "default:steel_ingot" },
+                { "", "default:steel_ingot", "" },
+                { "default:steel_ingot", "", "default:steel_ingot" }
+        },
+})
+
+
+-- Various ancillary tube devices
+
+minetest.register_craft( {
+	output = "pipeworks:filter 2",
+	recipe = {
+	        { "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" },
+	        { "default:stick", "default:mese_crystal", "homedecor:plastic_sheeting" },
+	        { "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" }
+	},
+})
+
+
+-- The tubes themselves
+
+
+-- If homedecor is not installed, we need to register its crafting chain for
+-- plastic sheeting so that pipeworks remains compatible with it.
+
+if minetest.get_modpath("homedecor") == nil then
 
 	minetest.register_craftitem(":homedecor:plastic_sheeting", {
 		description = "Plastic sheet",
-			inventory_image = "pipeworks_plastic_sheeting.png",
+		inventory_image = "homedecor_plastic_sheeting.png",
+	})
+
+	minetest.register_craftitem(":homedecor:plastic_base", {
+		description = "Unprocessed Plastic base",
+		wield_image = "homedecor_plastic_base.png",
+		inventory_image = "homedecor_plastic_base_inv.png",
+	})
+
+	minetest.register_craft({
+		type = "shapeless",
+		output = 'homedecor:plastic_base 6',
+		recipe = { "default:junglegrass",
+			   "default:junglegrass",
+			   "default:junglegrass"
+		}
+	})
+
+	minetest.register_craft({
+		type = "shapeless",
+		output = 'homedecor:plastic_base 3',
+		recipe = { "default:dry_shrub",
+			   "default:dry_shrub",
+			   "default:dry_shrub"
+		},
+	})
+
+	minetest.register_craft({
+		type = "shapeless",
+		output = 'homedecor:plastic_base 4',
+		recipe = { "default:leaves",
+			   "default:leaves",
+			   "default:leaves",
+			   "default:leaves",
+			   "default:leaves",
+			   "default:leaves"
+		}
 	})
 
 	minetest.register_craft({
 		type = "cooking",
 		output = "homedecor:plastic_sheeting",
-		        recipe = "default:junglegrass",
+		recipe = "homedecor:plastic_base",
+	})
+
+	minetest.register_craft({
+		type = 'fuel',
+		recipe = 'homedecor:plastic_base',
+		burntime = 30,
 	})
 
 	minetest.register_craft({
@@ -26,60 +143,15 @@ if io.open(minetest.get_modpath("pipeworks").."/../technic/init.lua", "r") == ni
 		recipe = 'homedecor:plastic_sheeting',
 		burntime = 30,
 	})
-	end
 
-	minetest.register_craft( {
-	        output = "pipeworks:pipe_110000_empty 12",
-	        recipe = {
-	                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
-	                { "", "", "" },
-	                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
-	        },
-	})
+end
 
-	minetest.register_craft( {
-	        output = "pipeworks:pump_off 2",
-	        recipe = {
-	                { "default:stone", "default:steel_ingot", "default:stone" },
-	                { "moreores:copper_ingot", "default:mese_crystal_fragment", "moreores:copper_ingot" },
-	                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
-	        },
-	})
 
-	minetest.register_craft( {
-	        output = "pipeworks:valve_off 2",
-	        recipe = {
-	                { "", "default:stick", "" },
-	                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
-	                { "", "default:steel_ingot", "" }
-	        },
-	})
+-- If the technic mod is present, then don't bother registering the recipes
+-- for the various tubes, as technic has its own recipes for those.
 
-	minetest.register_craft( {
-	        output = "pipeworks:storage_tank_0 2",
-	        recipe = {
-	                { "", "default:steel_ingot", "default:steel_ingot" },
-	                { "default:steel_ingot", "default:glass", "default:steel_ingot" },
-	                { "default:steel_ingot", "default:steel_ingot", "" }
-	        },
-	})
-
-	minetest.register_craft( {
-	        output = "pipeworks:grating 2",
-	        recipe = {
-	                { "default:steel_ingot", "", "default:steel_ingot" },
-	                { "", "default:steel_ingot", "" },
-	                { "default:steel_ingot", "", "default:steel_ingot" }
-	        },
-	})
-
-	minetest.register_craft( {
-	        output = "pipeworks:spigot 3",
-	        recipe = {
-	                { "pipeworks:pipe_110000_empty", "" },
-	                { "", "pipeworks:pipe_110000_empty" },
-	        },
-	})
+if io.open(minetest.get_modpath("pipeworks").."/../technic/init.lua", "r") == nil and
+   io.open(minetest.get_modpath("pipeworks").."/../technic_master/technic/init.lua", "r") == nil then
 
 	minetest.register_craft( {
 		output = "pipeworks:tube 12",
@@ -146,23 +218,6 @@ if io.open(minetest.get_modpath("pipeworks").."/../technic/init.lua", "r") == ni
 		        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
 		},
 	})
-
-	minetest.register_craft( {
-		output = "pipeworks:filter 2",
-		recipe = {
-		        { "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" },
-		        { "default:stick", "default:mese_crystal", "homedecor:plastic_sheeting" },
-		        { "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" }
-		},
-	})
-
-	minetest.register_craft( {
-        output = "pipeworks:entry_panel 2",
-        recipe = {
-		{ "", "default:steel_ingot", "" },
-                { "", "pipeworks:pipe_110000_empty", "" },
-		{ "", "default:steel_ingot", "" },
-        },
-	})
-
 end
+
+