Fixes and improvements for 'TechPack Stairway' Lattice

- Fix `Mesh not found: techpack_stairway_slope.obj` error on start by adding missing obj file taken from `moreblocks` mod
- When available, use `moreblocks` for creating different stairs and slopes

.gitignore

@@ -10,7 +10,6 @@ luac.out
 *.o
 *.os
 *.ko
-*.obj
 *.elf
 
 # Precompiled Headers

techpack_stairway/depends.txt

@@ -1,2 +1,3 @@
 default
+moreblocks?
 

techpack_stairway/init.lua

@@ -504,7 +504,22 @@ minetest.register_node("techpack_stairway:lattice", {
 	sounds = default.node_sound_metal_defaults(),
 })
 
-minetest.register_node("techpack_stairway:lattice_slop", {
+if minetest.get_modpath("moreblocks") then
+	stairsplus:register_all("techpack_stairway", "lattice", "techpack_stairway:lattice", {
+		description = S("TechPack Lattice"),
+		tiles = {
+			'techpack_stairway_lattice.png',
+		},
+
+		sunlight_propagates = true,
+		is_ground_content = false,
+		groups = {cracky = 2},
+		sounds = default.node_sound_metal_defaults(),
+	})
+
+	minetest.register_alias("techpack_stairway:lattice_slop", "techpack_stairway:slope_lattice")
+else
+	minetest.register_node("techpack_stairway:lattice_slop", {
 		description = S("TechPack Lattice Slope"),
 		tiles = {
 			'techpack_stairway_lattice.png',
@@ -550,7 +565,8 @@ minetest.register_node("techpack_stairway:lattice_slop", {
 		is_ground_content = false,
 		groups = {cracky = 2},
 		sounds = default.node_sound_metal_defaults(),
-})
+	})
+end
 
 minetest.register_craft({
 	output = "techpack_stairway:grating 4",

techpack_stairway/mod.conf

@@ -1,3 +1,4 @@
 name=techpack_stairway
 description=Simple stairways and bridges for your machines.
 depends=default
+optional_depends=moreblocks

techpack_stairway/models/techpack_stairway_slope.obj

@@ -0,0 +1,56 @@
+g top
+v 0.500000 0.500000 0.500000
+v -0.500000 0.500000 0.500000
+v -0.500000 -0.500000 -0.500000
+v 0.500000 -0.500000 -0.500000
+vt 1.0000 1.0000
+vt 0.0000 1.0000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vn 0.0000 0.7071 -0.7071
+s off
+f 2/1/1 1/2/1 4/3/1 3/4/1
+g bottom
+v -0.500000 -0.500000 0.500000
+v 0.500000 -0.500000 0.500000
+v -0.500000 -0.500000 -0.500000
+v 0.500000 -0.500000 -0.500000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vt 1.0000 1.0000
+vt 0.0000 1.0000
+vn 0.0000 -1.0000 -0.0000
+s off
+f 6/5/2 5/6/2 7/7/2 8/8/2
+g right
+v -0.500000 0.500000 0.500000
+v -0.500000 -0.500000 0.500000
+v -0.500000 -0.500000 -0.500000
+vt 1.0000 1.0000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vn -1.0000 0.0000 0.0000
+s off
+f 9/9/3 11/10/3 10/11/3
+g left
+v 0.500000 0.500000 0.500000
+v 0.500000 -0.500000 0.500000
+v 0.500000 -0.500000 -0.500000
+vt 0.0000 1.0000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vn 1.0000 0.0000 0.0000
+s off
+f 12/12/4 13/13/4 14/14/4
+g back
+v 0.500000 0.500000 0.500000
+v -0.500000 0.500000 0.500000
+v -0.500000 -0.500000 0.500000
+v 0.500000 -0.500000 0.500000
+vt 1.0000 1.0000
+vt 0.0000 1.0000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vn 0.0000 -0.0000 1.0000
+s off
+f 15/15/5 16/16/5 17/17/5 18/18/5