Add a new type of cable clip

Uses Zeg9's steel mod's "steel:strut_mount" or streetsmod's
"streets:steel_support" as the base/blocky part, with an overlay copied
from the steel mod to make it look like the clip is fixed to the strut
with a steel band.

Textures will adjust to match whichever mod is installed, preferring the
steel mod.

Can be crafted from any of these standard/shaped recipes:

- - -        - f d
- f -   or   - s -
- m -        - i -

f = fencepost-shaped clip
m = steel mod strut with mount
s = steel mod strut without mount, or streets mod steel support
i = default steel ingot
d = dye (optional, see below)

If the user has Unified Dyes (commit 2a816534 or later), the clip can be
dyed (well, the white part anyway :-) ), either by adding a portion of
dye as above, or by crafting an existing clip + dye. Uses
"colorwallmounted" mode for 32-color support.

extranodes/depends.txt

@@ -4,3 +4,5 @@ concrete
 unifieddyes?
 intllib?
 moreblocks?
+steel?
+streetsmod?

extranodes/init.lua

@@ -103,7 +103,7 @@ if minetest.get_modpath("moreblocks") then
 end
 
 local iclip_def = {
-	description = "Insulator/cable clip",
+	description = S("Insulator/cable clip"),
 	drawtype = "mesh",
 	mesh = "technic_insulator_clip.obj",
 	tiles = {"technic_insulator_clip.png"},
@@ -113,7 +113,7 @@ local iclip_def = {
 }
 
 local iclipfence_def = {
-	description = "Insulator/cable clip",
+	description = S("Insulator/cable clip"),
 	tiles = {"technic_insulator_clip.png"},
 	is_ground_content = false,
 	paramtype = "light",
@@ -146,6 +146,36 @@ local iclipfence_def = {
 	sounds = default.node_sound_stone_defaults(),
 }
 
+local sclip_tex = {
+	"technic_insulator_clip.png",
+	{ name = "strut.png^steel_strut_overlay.png", color = "white" },
+	{ name = "strut.png", color = "white" }
+}
+
+local streetsmod = minetest.get_modpath("streets") or minetest.get_modpath ("steelsupport")
+-- cheapie's fork breaks it into several individual mods, with differernt names for the same content.
+
+if streetsmod then
+	sclip_tex = {
+		"technic_insulator_clip.png",
+		{ name = "streets_support.png^technic_steel_strut_overlay.png", color = "white" },
+		{ name = "streets_support.png", color = "white" }
+	}
+end
+
+local sclip_def = {
+	description = S("Steel strut with insulator/cable clip"),
+	drawtype = "mesh",
+	mesh = "technic_steel_strut_with_insulator_clip.obj",
+	tiles = sclip_tex,
+	paramtype = "light",
+	paramtype2 = "wallmounted",
+	is_ground_content = false,
+	sounds = default.node_sound_stone_defaults(),
+	groups = { choppy=1, cracky=1 },
+	backface_culling = false
+}
+
 if minetest.get_modpath("unifieddyes") then
 	iclip_def.paramtype2 = "colorwallmounted"
 	iclip_def.palette = "unifieddyes_palette_colorwallmounted.png"
@@ -158,10 +188,18 @@ if minetest.get_modpath("unifieddyes") then
 	iclipfence_def.palette = "unifieddyes_palette_extended.png"
 	iclipfence_def.on_construct = unifieddyes.on_construct
 	iclipfence_def.groups = {fence=1, choppy=1, snappy=1, oddly_breakable_by_hand=1, ud_param2_colorable = 1}
+
+	sclip_def.paramtype2 = "colorwallmounted"
+	sclip_def.palette = "unifieddyes_palette_colorwallmounted.png"
+	sclip_def.after_place_node = function(pos, placer, itemstack, pointed_thing)
+		unifieddyes.fix_rotation(pos, placer, itemstack, pointed_thing)
+	end
+	sclip_def.groups = {choppy=1, cracky=1, ud_param2_colorable = 1}
 end
 
 minetest.register_node(":technic:insulator_clip", iclip_def)
 minetest.register_node(":technic:insulator_clip_fencepost", iclipfence_def)
+minetest.register_node(":technic:steel_strut_with_insulator_clip", sclip_def)
 
 minetest.register_craft({
 	output = "technic:insulator_clip",
@@ -181,6 +219,37 @@ minetest.register_craft({
 	}
 })
 
+local steelmod = minetest.get_modpath("steel")
+
+if steelmod then
+	minetest.register_craft({
+		output = "technic:steel_strut_with_insulator_clip",
+		recipe = {
+			{"technic:insulator_clip_fencepost"},
+			{"steel:strut_mount"}
+		}
+	})
+
+	minetest.register_craft({
+		output = "technic:steel_strut_with_insulator_clip",
+		recipe = {
+			{"technic:insulator_clip_fencepost", ""                    },
+			{"steel:strut",                      "default:steel_ingot" },
+		}
+	})
+
+end
+
+if streetsmod then
+	minetest.register_craft({
+		output = "technic:steel_strut_with_insulator_clip",
+		recipe = {
+			{"technic:insulator_clip_fencepost", ""                   },
+			{"streets:steel_support",           "default:steel_ingot" },
+		}
+	})
+end
+
 if minetest.get_modpath("unifieddyes") then
 
 	unifieddyes.register_color_craft({
@@ -205,4 +274,38 @@ if minetest.get_modpath("unifieddyes") then
 		}
 	})
 
+	unifieddyes.register_color_craft({
+		output = "technic:steel_strut_with_insulator_clip",
+		palette = "wallmounted",
+		type = "shapeless",
+		neutral_node = "",
+		recipe = {
+			"technic:steel_strut_with_insulator_clip",
+			"MAIN_DYE"
+		}
+	})
+
+	if steelmod then
+		unifieddyes.register_color_craft({
+			output = "technic:steel_strut_with_insulator_clip",
+			palette = "wallmounted",
+			neutral_node = "",
+			recipe = {
+				{ "technic:insulator_clip_fencepost", "MAIN_DYE" },
+				{ "steel:strut_mount",                ""         },
+			}
+		})
+	end
+
+	if streetsmod then
+		unifieddyes.register_color_craft({
+			output = "technic:steel_strut_with_insulator_clip",
+			palette = "wallmounted",
+			neutral_node = "technic:steel_strut_with_insulator_clip",
+			recipe = {
+				{ "technic:insulator_clip_fencepost", "MAIN_DYE"            },
+				{ "streets:steel_support",            "default:steel_ingot" },
+			}
+		})
+	end
 end