--[[

	TechPack Stairway
	=================

	Copyright (C) 2019-2020 Joachim Stolberg

	LGPLv2.1+
	See LICENSE.txt for more information
	
	init.lua

]]--

local S = minetest.get_translator("techpack_stairway")

-- Test MT 5.4 new string mode
local CLIP = minetest.features.use_texture_alpha_string_modes and "clip" or false


minetest.register_node("techpack_stairway:grating", {
	description = S("TechPack Grating"),
	tiles = {
		'techpack_stairway_bottom.png',
		'techpack_stairway_bottom.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-17/32, -17/32, -17/32,  17/32, -15/32, 17/32}
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{-16/32, -16/32, -16/32,  16/32, -10/32, 16/32},
		},
	},
	
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:handrail1", {
	description = S("TechPack Handrail 1"),
	tiles = {
		'techpack_stairway_bottom.png',
		'techpack_stairway_bottom.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-17/32, -17/32, -17/32, -15/32,  17/32, 17/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{ -16/32, -16/32, -16/32, -12/32, -6/32, 16/32},
		},
	},
	
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:handrail2", {
	description = S("TechPack Handrail 2"),
	tiles = {
		'techpack_stairway_bottom.png',
		'techpack_stairway_bottom.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{ 15/32, -17/32, -17/32,  17/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32, -15/32,  17/32, 17/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{ 12/32, -16/32, -16/32,  16/32,  -6/32, 16/32},
			{-16/32, -16/32, -16/32, -12/32,  -6/32, 16/32},
		},
	},
	
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:handrail3", {
	description = S("TechPack Handrail 3"),
	tiles = {
		'techpack_stairway_bottom.png',
		'techpack_stairway_bottom.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-17/32, -17/32,  15/32,  17/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32, -15/32,  17/32, 17/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{ -16/32, -16/32,  12/32,  16/32, -6/32, 16/32},
			{ -16/32, -16/32, -16/32, -12/32, -6/32, 16/32},
		},
	},
	
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:handrail4", {
	description = S("TechPack Handrail 4"),
	tiles = {
		'techpack_stairway_bottom.png',
		'techpack_stairway_bottom.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-17/32, -17/32,  15/32,  17/32,  17/32, 17/32},
			{ 15/32, -17/32, -17/32,  17/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32, -15/32,  17/32, 17/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{ 12/32, -16/32, -16/32,  16/32, -6/32, 16/32},
			{-16/32, -16/32, -16/32, -12/32, -6/32, 16/32},
			{-16/32, -16/32,  12/32,  16/32, -6/32, 16/32},
		},
	},
	
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:bridge1", {
	description = S("TechPack Bridge 1"),
	tiles = {
		'techpack_stairway_bottom.png',
		'techpack_stairway_bottom.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-17/32, -17/32, -17/32, -15/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32,  17/32, -15/32, 17/32}
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{-16/32, -16/32, -16/32,  16/32, -10/32, 16/32},
		},
	},
	
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:bridge2", {
	description = S("TechPack Bridge 2"),
	tiles = {
		'techpack_stairway_bottom.png',
		'techpack_stairway_bottom.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{ 15/32, -17/32, -17/32,  17/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32, -15/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32,  17/32, -15/32, 17/32}
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{-16/32, -16/32, -16/32,  16/32, -10/32, 16/32},
		},
	},
	
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:bridge3", {
	description = S("TechPack Bridge 3"),
	tiles = {
		'techpack_stairway_bottom.png',
		'techpack_stairway_bottom.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-17/32, -17/32,  15/32,  17/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32, -15/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32,  17/32, -15/32, 17/32}
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{-16/32, -16/32, -16/32,  16/32, -10/32, 16/32},
		},
	},
	
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:bridge4", {
	description = S("TechPack Bridge 4"),
	tiles = {
		'techpack_stairway_bottom.png',
		'techpack_stairway_bottom.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-17/32, -17/32,  15/32,  17/32,  17/32, 17/32},
			{ 15/32, -17/32, -17/32,  17/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32, -15/32,  17/32, 17/32},
			{-17/32, -17/32, -17/32,  17/32, -15/32, 17/32}
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{-16/32, -16/32, -16/32,  16/32, -10/32, 16/32},
		},
	},
	
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:stairway1", {
	description = S("TechPack Stairway 1"),
	tiles = {
		'techpack_stairway_steps.png',
		'techpack_stairway_steps.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			--{ 15/32, -1/32,  -1/32,  17/32,  49/32, 17/32},
			--{-17/32, -1/32,  -1/32, -15/32,  49/32, 17/32},
			{-17/32, -1/32,  -1/32,  17/32,   1/32, 17/32},
			
			--{ 15/32, -17/32, -17/32,  17/32,  33/32, 1/32},
			--{-17/32, -17/32, -17/32, -15/32,  33/32, 1/32},
			{-17/32, -17/32, -17/32,  17/32, -15/32, 1/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{-16/32, -16/32, -16/32,  16/32, -10/32,  0/32},
			{-16/32, -16/32,   0/32,  16/32,   2/32, 16/32},
		},
	},
		
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:stairway2", {
	description = S("TechPack Stairway 2"),
	tiles = {
		'techpack_stairway_steps.png',
		'techpack_stairway_steps.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			--{ 15/32, -1/32,  -1/32,  17/32,  49/32, 17/32},
			{-17/32, -1/32,  -1/32, -15/32,  49/32, 17/32},
			{-17/32, -1/32,  -1/32,  17/32,   1/32, 17/32},
			
			--{ 15/32, -17/32, -17/32,  17/32,  33/32, 1/32},
			{-17/32, -17/32, -17/32, -15/32,  33/32, 1/32},
			{-17/32, -17/32, -17/32,  17/32, -15/32, 1/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{-16/32, -16/32, -16/32,  16/32, -10/32,  0/32},
			{-16/32, -16/32,   0/32,  16/32,   2/32, 16/32},
		},
	},
		
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:stairway3", {
	description = S("TechPack Stairway 3"),
	tiles = {
		'techpack_stairway_steps.png',
		'techpack_stairway_steps.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{ 15/32, -1/32,  -1/32,  17/32,  49/32, 17/32},
			--{-17/32, -1/32,  -1/32, -15/32,  49/32, 17/32},
			{-17/32, -1/32,  -1/32,  17/32,   1/32, 17/32},
			
			{ 15/32, -17/32, -17/32,  17/32,  33/32, 1/32},
			--{-17/32, -17/32, -17/32, -15/32,  33/32, 1/32},
			{-17/32, -17/32, -17/32,  17/32, -15/32, 1/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{-16/32, -16/32, -16/32,  16/32, -10/32,  0/32},
			{-16/32, -16/32,   0/32,  16/32,   2/32, 16/32},
		},
	},
		
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:stairway", {
	description = S("TechPack Stairway 4"),
	tiles = {
		'techpack_stairway_steps.png',
		'techpack_stairway_steps.png',
		'techpack_stairway_side.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{ 15/32, -1/32,  -1/32,  17/32,  49/32, 17/32},
			{-17/32, -1/32,  -1/32, -15/32,  49/32, 17/32},
			{-17/32, -1/32,  -1/32,  17/32,   1/32, 17/32},
			
			{ 15/32, -17/32, -17/32,  17/32,  33/32, 1/32},
			{-17/32, -17/32, -17/32, -15/32,  33/32, 1/32},
			{-17/32, -17/32, -17/32,  17/32, -15/32, 1/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {
			{-16/32, -16/32, -16/32,  16/32, -10/32,  0/32},
			{-16/32, -16/32,   0/32,  16/32,   2/32, 16/32},
		},
	},
		
	--climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:ladder1", {
	description = S("TechPack Ladder 1"),
	tiles = {
		'techpack_stairway_steps.png',
		'techpack_stairway_steps.png',
		'techpack_stairway_ladder.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-17/32, -17/32,  15/32,  17/32,  17/32,  17/32},
			{-17/32, -17/32, -17/32, -15/32,  17/32,  17/32},
			{-17/32, -17/32, -17/32,  17/32,  17/32, -15/32},
			{ 15/32, -17/32, -17/32,  17/32,  17/32,  17/32},
		},
	},
	selection_box = {
		type = "fixed",
		fixed = {-8/16, -8/16, -8/16,  8/16, 8/16, 8/16},
	},

	climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:ladder2", {
	description = S("TechPack Ladder 2"),
	tiles = {
		'techpack_stairway_steps.png',
		'techpack_stairway_steps.png',
		'techpack_stairway_ladder.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-17/32, -17/32,  15/32,  17/32,  17/32,  17/32},
			{-17/32, -17/32, -17/32, -15/32,  17/32,  17/32},
			--{-17/32, -17/32, -17/32,  17/32,  17/32, -15/32},
			{ 15/32, -17/32, -17/32,  17/32,  17/32,  17/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {-8/16, -8/16, -8/16,  8/16, 8/16, 8/16},
	},
	
	climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:ladder3", {
    description = S("TechPack Ladder 3"),
    tiles = {
        'techpack_stairway_steps.png',
        'techpack_stairway_steps.png',
        'techpack_stairway_ladder.png',
    },
    drawtype = "nodebox",
    node_box = {
        type = "fixed",
        fixed = {
            {-17/32, -17/32,  15/32,  17/32,  17/32,  17/32},
            --{-17/32, -17/32, -17/32, -15/32,  17/32,  17/32},
            --{-17/32, -17/32, -17/32,  17/32,  17/32, -15/32},
            { 15/32, -17/32, -17/32,  17/32,  17/32,  17/32},
        },
    },

    selection_box = {
        type = "fixed",
        fixed = {-8/16, -8/16, -8/16,  8/16, 8/16, 8/16},
    },

    climbable = true,
    paramtype2 = "facedir",
    paramtype = "light",
	use_texture_alpha = CLIP,
    sunlight_propagates = true,
    is_ground_content = false,
    groups = {cracky = 2},
    sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:ladder4", {
	description = S("TechPack Ladder 4"),
	tiles = {
		'techpack_stairway_ladder.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
            {-17/32, -17/32,  15/32,  17/32,  17/32,  17/32},
            --{-17/32, -17/32, -17/32, -15/32,  17/32,  17/32},
            --{-17/32, -17/32, -17/32,  17/32,  17/32, -15/32},
            --{ 15/32, -17/32, -17/32,  17/32,  17/32,  17/32},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {-8/16, -8/16, 6/16,  8/16, 8/16, 8/16},
	},
	
	climbable = true,
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})


minetest.register_node("techpack_stairway:lattice", {
	description = S("TechPack Lattice"),
	tiles = {
		'techpack_stairway_lattice.png',
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-8/16, -8/16, -8/16, -7/16,  8/16,  8/16},
			{ 7/16, -8/16, -8/16,  8/16,  8/16,  8/16},
			{-8/16, -8/16, -8/16,  8/16, -7/16,  8/16},
			{-8/16,  7/16, -8/16,  8/16,  8/16,  8/16},
			{-8/16, -8/16, -8/16,  8/16,  8/16, -7/16},
			{-8/16, -8/16,  7/16,  8/16,  8/16,  8/16},
		},
	},

	selection_box = {
		type = "fixed",
		fixed = {-8/16, -8/16, -8/16,  8/16, 8/16, 8/16},
	},
	
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_node("techpack_stairway:lattice_slop", {
	description = S("TechPack Lattice Slope"),
	tiles = {
		'techpack_stairway_lattice.png',
	},
	drawtype = "mesh",
	mesh="techpack_stairway_slope.obj",

	selection_box = {
		type = "fixed",
		fixed = {
			{-8/16,  4/16,  4/16,  8/16,  8/16, 8/16},
		    {-8/16,  0/16,  0/16,  8/16,  4/16, 8/16},
		    {-8/16, -4/16, -4/16,  8/16,  0/16, 8/16},
		    {-8/16, -8/16, -8/16,  8/16, -4/16, 8/16},
		},
	},
	
	collision_box = {
		type = "fixed",
		fixed = {
			{-8/16,  4/16,  4/16,  8/16,  8/16, 8/16},
		    {-8/16,  0/16,  0/16,  8/16,  4/16, 8/16},
		    {-8/16, -4/16, -4/16,  8/16,  0/16, 8/16},
		    {-8/16, -8/16, -8/16,  8/16, -4/16, 8/16},
		},
	},
	
	after_place_node = function(pos, placer, itemstack, pointed_thing)
		local node = minetest.get_node(pos)
		local dir = minetest.facedir_to_dir(node.param2)
		if pointed_thing.under.y >= pointed_thing.above.y then
			local newparam2 = ({[0] = 8, [1] = 17, [2] = 22, [3] = 15})[node.param2]
			if newparam2 then
				node.param2 = newparam2
				minetest.swap_node(pos, node)
			end
		end
	end,
		
	paramtype2 = "facedir",
	paramtype = "light",
	use_texture_alpha = CLIP,
	sunlight_propagates = true,
	is_ground_content = false,
	groups = {cracky = 2},
	sounds = default.node_sound_metal_defaults(),
})

minetest.register_craft({
	output = "techpack_stairway:grating 6",
	recipe = {
		{"", "", ""},
		{"dye:dark_grey", "", "default:coal_lump"},
		{"default:steel_ingot", "default:tin_ingot", "default:steel_ingot"},
	},
})

minetest.register_craft({
	output = "techpack_stairway:handrail1 6",
	recipe = {
		{"default:steel_ingot", "default:coal_lump", ""},
		{"default:tin_ingot", "", ""},
		{"default:steel_ingot", "dye:dark_grey", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:stairway1 6",
	recipe = {
		{"", "", "default:steel_ingot"},
		{"dye:dark_grey", "default:tin_ingot", "default:coal_lump"},
		{"default:steel_ingot", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:stairway2",
	recipe = {
		{"", "", ""},
		{"techpack_stairway:handrail1", "techpack_stairway:stairway1", ""},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:stairway3",
	recipe = {
		{"", "", ""},
		{"", "techpack_stairway:stairway1", "techpack_stairway:handrail1"},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:stairway",
	recipe = {
		{"", "", ""},
		{"techpack_stairway:handrail1", "techpack_stairway:stairway1", "techpack_stairway:handrail1"},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:ladder1 3",
	recipe = {
		{"", "default:steel_ingot", ""},
		{"dye:dark_grey", "default:tin_ingot", "default:coal_lump"},
		{"", "default:steel_ingot", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:ladder3 6",
	recipe = {
		{"", "", "default:steel_ingot"},
		{"dye:dark_grey", "default:tin_ingot", "default:coal_lump"},
		{"", "", "default:steel_ingot"},
	},
})

minetest.register_craft({
	output = "techpack_stairway:ladder4 12",
	recipe = {
		{"dye:dark_grey", "default:tin_ingot", "default:coal_lump"},
		{"", "default:steel_ingot", ""},
		{"", "default:steel_ingot", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:lattice 4",
	recipe = {
		{"default:steel_ingot", "", "default:steel_ingot"},
		{"dye:dark_grey", "default:tin_ingot", "default:coal_lump"},
		{"default:steel_ingot", "", "default:steel_ingot"},
	},
})

minetest.register_craft({
	output = "techpack_stairway:lattice_slop 2",
	recipe = {{"techpack_stairway:lattice"}},
})

minetest.register_craft({
	output = "techpack_stairway:handrail2",
	recipe = {
		{"", "", ""},
		{"techpack_stairway:handrail1", "", "techpack_stairway:handrail1"},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:handrail3",
	recipe = {
		{"", "techpack_stairway:handrail1", ""},
		{"techpack_stairway:handrail1", "", ""},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:handrail4",
	recipe = {
		{"", "techpack_stairway:handrail1", ""},
		{"techpack_stairway:handrail1", "", "techpack_stairway:handrail1"},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:bridge1",
	recipe = {
		{"", "", ""},
		{"techpack_stairway:handrail1", "techpack_stairway:grating", ""},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:bridge2",
	recipe = {
		{"", "", ""},
		{"techpack_stairway:handrail1", "techpack_stairway:grating", "techpack_stairway:handrail1"},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:bridge3",
	recipe = {
		{"", "techpack_stairway:handrail1", ""},
		{"techpack_stairway:handrail1", "techpack_stairway:grating", ""},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:bridge4",
	recipe = {
		{"", "techpack_stairway:handrail1", ""},
		{"techpack_stairway:handrail1", "techpack_stairway:grating", "techpack_stairway:handrail1"},
		{"", "", ""},
	},
})

minetest.register_craft({
	output = "techpack_stairway:ladder2",
	recipe = {{"techpack_stairway:ladder1"}},
})