-- Boom barrier
function move_arm(pos, node)
	local node = minetest.env:get_node(pos)
	local param2 = node.param2

	if param2 == 0 then
		dir = "z-"
	elseif param2 == 1 then
		dir = "x-"
	elseif param2 == 2 then
		dir = "z+"
	elseif param2 == 3 then
		dir = "x+"
	end

	minetest.sound_play("infrastructure_boom_barrier", {
		pos = pos,
		gain = BOOM_BARRIER_VOLUME,
		max_hear_distance = 50
	})

	if node.name == "infrastructure:boom_barrier_top_h" then
		minetest.swap_node(pos, {name = "infrastructure:boom_barrier_top_v", param2 = node.param2})

		if dir == "x+" then
			for i = 1, 10 do
				pos.x = pos.x + 1
				if (string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_lightfirst")
				or string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_end")
				or string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_darkfirst")) == nil then
					pos.x = pos.x - 1
					break
				end
				minetest.env:remove_node(pos)
				node.name = "infrastructure:boom_barrier_arm_v"
				minetest.env:add_node({x=pos.x-i, y=pos.y+i, z=pos.z}, node)
			end
		elseif dir == "x-" then
			for i = 1, 10 do
				pos.x = pos.x - 1
				if (string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_lightfirst")
				or string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_end")
				or string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_darkfirst")) == nil then
					break
				end
				minetest.env:remove_node(pos)
				node.name = "infrastructure:boom_barrier_arm_v"
				minetest.env:add_node({x=pos.x+i, y=pos.y+i, z=pos.z}, node)
			end
		elseif dir == "z+" then
			for i = 1, 10 do
				pos.z = pos.z + 1
				if (string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_lightfirst")
				or string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_end")
				or string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_darkfirst")) == nil then
					break
				end
				minetest.env:remove_node(pos)
				node.name = "infrastructure:boom_barrier_arm_v"
				minetest.env:add_node({x=pos.x, y=pos.y+i, z=pos.z-i}, node)
			end
		elseif dir == "z-" then
			for i = 1, 10 do
				pos.z = pos.z - 1
				if (string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_lightfirst")
				or string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_end")
				or string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_h_darkfirst")) == nil then
					break
				end
				minetest.env:remove_node(pos)
				node.name = "infrastructure:boom_barrier_arm_v"
				minetest.env:add_node({x=pos.x, y=pos.y+i, z=pos.z+i}, node)
			end
		end

	elseif node.name == "infrastructure:boom_barrier_top_v" then
		minetest.swap_node(pos, {name = "infrastructure:boom_barrier_top_h", param2 = node.param2})
			if dir == "x+" then
			for i = 1, 10 do
				pos.y = pos.y + 1
				if string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_v") == nil then
					break
				end
				minetest.env:remove_node(pos)
				if i % 2 == 1 then
					node.name = "infrastructure:boom_barrier_arm_h_lightfirst"
				else
					node.name = "infrastructure:boom_barrier_arm_h_darkfirst"
				end
				if minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name ~= "infrastructure:boom_barrier_arm_v" then
					node.name = "infrastructure:boom_barrier_arm_h_end"
				end
				minetest.env:add_node({x=pos.x+i, y=pos.y-i, z=pos.z}, node)
			end
		elseif dir == "x-" then
			for i = 1, 10 do
				pos.y = pos.y + 1
				if string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_v") == nil then
					break
				end
				minetest.env:remove_node(pos)
				if i % 2 == 1 then
					node.name = "infrastructure:boom_barrier_arm_h_lightfirst"
				else
					node.name = "infrastructure:boom_barrier_arm_h_darkfirst"
				end
				if minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name ~= "infrastructure:boom_barrier_arm_v" then
					node.name = "infrastructure:boom_barrier_arm_h_end"
				end
				minetest.env:add_node({x=pos.x-i, y=pos.y-i, z=pos.z}, node)
			end
		elseif dir == "z+" then
			for i = 1, 10 do
				pos.y = pos.y + 1
				if string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_v") == nil then
					break
				end
				minetest.env:remove_node(pos)
				if i % 2 == 1 then
					node.name = "infrastructure:boom_barrier_arm_h_lightfirst"
				else
					node.name = "infrastructure:boom_barrier_arm_h_darkfirst"
				end
				if minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name ~= "infrastructure:boom_barrier_arm_v" then
					node.name = "infrastructure:boom_barrier_arm_h_end"
				end
				minetest.env:add_node({x=pos.x, y=pos.y-i, z=pos.z+i}, node)
			end
		elseif dir == "z-" then
			for i = 1, 10 do
				pos.y = pos.y + 1
				if string.match(minetest.env:get_node(pos).name, "infrastructure:boom_barrier_arm_v") == nil then
					break
				end
				minetest.env:remove_node(pos)
				if i % 2 == 1 then
					node.name = "infrastructure:boom_barrier_arm_h_lightfirst"
				else
					node.name = "infrastructure:boom_barrier_arm_h_darkfirst"
				end
				if minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name ~= "infrastructure:boom_barrier_arm_v" then
					node.name = "infrastructure:boom_barrier_arm_h_end"
				end
				minetest.env:add_node({x=pos.x, y=pos.y-i, z=pos.z-i}, node)
			end
		end
	end
end

minetest.register_node("infrastructure:boom_barrier_top_h", {
	description = "Boom barrier mechanism",
	tiles = {
		"infrastructure_boom_barrier_h_top.png",
		"infrastructure_boom_barrier_h_bottom.png",
		"infrastructure_boom_barrier_h_right.png",
		"infrastructure_boom_barrier_h_left.png",
		"infrastructure_boom_barrier_h_front_back.png"
	},
	drawtype = "nodebox",
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {cracky = 1},
	node_box = {
		type = "fixed",
		fixed = {
			{-1/4, -1/4, -1/4, 1/4, 1/4, 1/4},
			{-1/8, -1/2, -1/8, 1/8, -1/4, 1/8},

			{-3/8, -1/2, -1/2, -1/4, -1/4, 1/8},
			{-3/8, -1/2, -1/8, -1/4, 1/8, 1/8},
			{-3/8, -1/8, -1/8, -1/4, 1/8, 1/2},
			{-1/2, -3/16, 1/4, -3/8, 3/16, 1/2},
			{-1/2, -1/8, 3/16, -3/8, 1/8, 1/2},
			{-1/2, -1/16, 1/8, -3/8, 1/16, 1/2},	

			{1/4, -1/2, -1/2, 3/8, -1/4, 1/8},
			{1/4, -1/2, -1/8, 3/8, 1/8, 1/8},
			{1/4, -1/8, -1/8, 3/8, 1/8, 1/2},
			{3/8, -3/16, 1/4, 1/2, 3/16, 1/2},
			{3/8, -1/8, 3/16, 1/2, 1/8, 1/2},
			{3/8, -1/16, 1/8, 1/2, 1/16, 1/2},

			{-3/8, -1/2, -1/2, 3/8, -1/4, -3/8},

			{-7/16, -1/16, -1/16, 7/16, 1/16, 1/16}
		}
	},
	selection_box = {
		type = "fixed",
		fixed = {
			{-1/4, -1/4, -1/4, 1/4, 1/4, 1/4},
			{-1/8, -1/2, -1/8, 1/8, -1/4, 1/8},

			{-3/8, -1/2, -1/2, -1/4, -1/4, 1/8},
			{-3/8, -1/2, -1/8, -1/4, 1/8, 1/8},
			{-3/8, -1/8, -1/8, -1/4, 1/8, 1/2},
			{-1/2, -3/16, 1/4, -3/8, 3/16, 1/2},
			{-1/2, -1/8, 3/16, -3/8, 1/8, 1/2},
			{-1/2, -1/16, 1/8, -3/8, 1/16, 1/2},	

			{1/4, -1/2, -1/2, 3/8, -1/4, 1/8},
			{1/4, -1/2, -1/8, 3/8, 1/8, 1/8},
			{1/4, -1/8, -1/8, 3/8, 1/8, 1/2},
			{3/8, -3/16, 1/4, 1/2, 3/16, 1/2},
			{3/8, -1/8, 3/16, 1/2, 1/8, 1/2},
			{3/8, -1/16, 1/8, 1/2, 1/16, 1/2},

			{-3/8, -1/2, -1/2, 3/8, -1/4, -3/8},

			{-7/16, -1/16, -1/16, 7/16, 1/16, 1/16}
		}
	},

	after_place_node = function(pos)
		local node = minetest.env:get_node(pos)
		node.name = "infrastructure:boom_barrier_bottom"
		minetest.env:add_node(pos, node)
		pos.y = pos.y + 1
		node.name = "infrastructure:boom_barrier_top_h"
		minetest.env:add_node(pos, node)
	end,

	after_dig_node = function(pos)
		pos.y = pos.y - 1
		minetest.env:remove_node(pos)
	end,

	on_punch = function(pos, node)
		move_arm(pos, node)
	end
})

minetest.register_node("infrastructure:boom_barrier_top_v", {
	tiles = {
		"infrastructure_boom_barrier_h_front_back.png",
		"infrastructure_boom_barrier_v_bottom.png",
		"infrastructure_boom_barrier_v_right.png",
		"infrastructure_boom_barrier_v_left.png",
		"infrastructure_boom_barrier_v_front_back.png"
	},
	drawtype = "nodebox",
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {cracky = 1},
	drop = "infrastructure:boom_barrier_top_h",
	node_box = {
		type = "fixed",
		fixed = {
			{-1/4, -1/4, -1/4, 1/4, 1/4, 1/4},
			{-1/8, -1/2, -1/8, 1/8, -1/4, 1/8},

			{-3/8, -1/8, -1/2, -1/4, 1/2, -1/4},
			{-3/8, -1/8, -1/2, -1/4, 1/8, 1/8},
			{-3/8, -1/2, -1/8, -1/4, 1/8, 1/8},
			{-1/2, -1/2, -3/16, -3/8, -1/4, 3/16},
			{-1/2, -1/2, -1/8, -3/8, -3/16, 1/8},
			{-1/2, -1/2, -1/16, -3/8, -1/8, 1/16},	

			{1/4, -1/8, -1/2, 3/8, 1/2, -1/4},
			{1/4, -1/8, -1/2, 3/8, 1/8, 1/8},
			{1/4, -1/2, -1/8, 3/8, 1/8, 1/8},
			{3/8, -1/2, -3/16, 1/2, -1/4, 3/16},
			{3/8, -1/2, -1/8, 1/2, -3/16, 1/8},
			{3/8, -1/2, -1/16, 1/2, -1/8, 1/16},

			{-3/8, 3/8, -1/2, 3/8, 1/2, -1/4},

			{-7/16, -1/16, -1/16, 7/16, 1/16, 1/16}
		}
	},
	selection_box = {
		type = "fixed",
		fixed = {
			{-1/4, -1/4, -1/4, 1/4, 1/4, 1/4},
			{-1/8, -1/2, -1/8, 1/8, -1/4, 1/8},

			{-3/8, -1/8, -1/2, -1/4, 1/2, -1/4},
			{-3/8, -1/8, -1/2, -1/4, 1/8, 1/8},
			{-3/8, -1/2, -1/8, -1/4, 1/8, 1/8},
			{-1/2, -1/2, -3/16, -3/8, -1/4, 3/16},
			{-1/2, -1/2, -1/8, -3/8, -3/16, 1/8},
			{-1/2, -1/2, -1/16, -3/8, -1/8, 1/16},	

			{1/4, -1/8, -1/2, 3/8, 1/2, -1/4},
			{1/4, -1/8, -1/2, 3/8, 1/8, 1/8},
			{1/4, -1/2, -1/8, 3/8, 1/8, 1/8},
			{3/8, -1/2, -3/16, 1/2, -1/4, 3/16},
			{3/8, -1/2, -1/8, 1/2, -3/16, 1/8},
			{3/8, -1/2, -1/16, 1/2, -1/8, 1/16},

			{-3/8, 3/8, -1/2, 3/8, 1/2, -1/4},

			{-7/16, -1/16, -1/16, 7/16, 1/16, 1/16}
		}
	},

	after_dig_node = function(pos)
		pos.y = pos.y - 1
		minetest.env:remove_node(pos)
	end,

	on_punch = function(pos, node)
		move_arm(pos, node)
	end
})

minetest.register_node("infrastructure:boom_barrier_bottom", {
	tiles = {
		"infrastructure_traffic_lights_side.png",
		"infrastructure_traffic_lights_side.png",
		"infrastructure_automatic_warning_device_bottom.png",
		"infrastructure_automatic_warning_device_bottom.png",
		"infrastructure_automatic_warning_device_bottom.png",
		"infrastructure_automatic_warning_device_bottom.png"
	},
	drawtype = "nodebox",
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {cracky = 1},
	drop = "infrastructure:boom_barrier_top_h",
	node_box = {
		type = "fixed",
		fixed = {
			{-1/16, -1/2, -1/16, 1/16, 1/2, 1/16},
			{-1/2, -1/2, -1/4, 1/2, -3/8, 1/4},
			{-1/4, -1/2, -1/2, 1/4, -3/8, 1/2},
			{-1/8, -1/2, -1/8, 1/8, 0, 1/8}
		}
	},
	selection_box = {
		type = "fixed",
		fixed = {
			{-1/16, -1/2, -1/16, 1/16, 1/2, 1/16},
			{-1/2, -1/2, -1/4, 1/2, -3/8, 1/4},
			{-1/4, -1/2, -1/2, 1/4, -3/8, 1/2},
			{-1/8, -1/2, -1/8, 1/8, 0, 1/8}
		}
	},

	after_dig_node = function(pos)
		pos.y = pos.y + 1
		minetest.env:remove_node(pos)
	end,

	on_construct = function(pos)
		local meta = minetest.get_meta(pos)
		meta:set_string("formspec", "field[channel;Channel;${channel}]")
	end,

	on_receive_fields = function(pos, formname, fields, sender)
		if (fields.channel) then
			minetest.get_meta(pos):set_string("channel", fields.channel)
			minetest.get_meta(pos):set_string("state", "Off")
		end
	end,

	digiline = {
		receptor = {},
		effector = {
			action = function(pos, node, channel, msg)
				local setchan = minetest.get_meta(pos):get_string("channel")
				if setchan ~= channel then
					return
				end
				pos.y = pos.y + 1
				local mechnode = minetest.env:get_node(pos)
				if ((msg == "up" and mechnode.name=="infrastructure:boom_barrier_top_h") or (msg == "down" and mechnode.name=="infrastructure:boom_barrier_top_v")) then
					move_arm(pos, mechnode)
				end
			end
		}
	},
})

minetest.register_node("infrastructure:boom_barrier_arm_h_lightfirst", {
	description = "Boom barrier arm",
	tiles = {
		"infrastructure_boom_barrier_arm_h_top.png",
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png",
		{name="infrastructure_boom_barrier_arm_h_anim_lightfirst.png",animation={type="vertical_frames", aspect_w=64, aspect_h=64, length=1.5}},
		{name="infrastructure_boom_barrier_arm_h_anim_lightfirst.png",animation={type="vertical_frames", aspect_w=64, aspect_h=64, length=1.5}},
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png",
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png"
	},
	drawtype = "nodebox",
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {cracky = 1},
	light_source = BOOM_BARRIER_LIGHT_RANGE,
	node_box = {
		type = "fixed",
		fixed = {
			{-1/8, -1/2, -1/2, 1/8, -7/16, 1/2},
			{-1/8, -5/16, -1/2, 1/8, -1/4, 1/2},
			{-1/8, -1/2, -1/2, -1/16, -1/4, 1/2},
			{1/16, -1/2, -1/2, 1/8, -1/4, 1/2},
			{0, -1/4, -1/8, 0, 0, 1/8}
		}
	},
	selection_box = {
		type = "fixed",
		fixed = {
			{-1/8, -1/2, -1/2, 1/8, -1/4, 1/2}
		}
	}
})

minetest.register_node("infrastructure:boom_barrier_arm_h_darkfirst", {
	tiles = {
		"infrastructure_boom_barrier_arm_h_top.png",
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png",
		{name="infrastructure_boom_barrier_arm_h_anim_darkfirst.png",animation={type="vertical_frames", aspect_w=64, aspect_h=64, length=1.5}},
		{name="infrastructure_boom_barrier_arm_h_anim_darkfirst.png",animation={type="vertical_frames", aspect_w=64, aspect_h=64, length=1.5}},
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png",
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png"
	},
	drawtype = "nodebox",
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {cracky = 1},
	drop = "infrastructure:boom_barrier_arm_h_lightfirst",
	node_box = {
		type = "fixed",
		fixed = {
			{-1/8, -1/2, -1/2, 1/8, -7/16, 1/2},
			{-1/8, -5/16, -1/2, 1/8, -1/4, 1/2},
			{-1/8, -1/2, -1/2, -1/16, -1/4, 1/2},
			{1/16, -1/2, -1/2, 1/8, -1/4, 1/2},
			{0, -1/4, -1/8, 0, 0, 1/8}
		}
	},
	selection_box = {
		type = "fixed",
		fixed = {
			{-1/8, -1/2, -1/2, 1/8, -1/4, 1/2}
		}
	}
})

minetest.register_node("infrastructure:boom_barrier_arm_h_end", {
	tiles = {
		"infrastructure_boom_barrier_arm_h_top.png",
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png",
		"infrastructure_boom_barrier_arm_h_left_right_bright.png",
		"infrastructure_boom_barrier_arm_h_left_right_bright.png",
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png",
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png"
	},
	drawtype = "nodebox",
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {cracky = 1},
	drop = "infrastructure:boom_barrier_arm_h_lightfirst",
	node_box = {
		type = "fixed",
		fixed = {
			{-1/8, -1/2, -1/2, 1/8, -7/16, 1/2},
			{-1/8, -5/16, -1/2, 1/8, -1/4, 1/2},
			{-1/8, -1/2, -1/2, -1/16, -1/4, 1/2},
			{1/16, -1/2, -1/2, 1/8, -1/4, 1/2},
			{0, -1/4, -1/8, 0, 0, 1/8}
		}
	},
	selection_box = {
		type = "fixed",
		fixed = {
			{-1/8, -1/2, -1/2, 1/8, -1/4, 1/2}
		}
	}
})

minetest.register_alias("infrastructure:boom_barrier_arm_h_dark","infrastructure:boom_barrier_arm_h_darkfirst")
minetest.register_alias("infrastructure:boom_barrier_arm_h_bright","infrastructure:boom_barrier_arm_h_lightfirst")

minetest.register_node("infrastructure:boom_barrier_arm_v", {
	tiles = {
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png",
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png",
		"infrastructure_boom_barrier_arm_v_left.png",
		"infrastructure_boom_barrier_arm_v_right.png",
		"infrastructure_boom_barrier_arm_h_top.png",
		"infrastructure_boom_barrier_arm_h_bottom_front_back.png"
	},
	drawtype = "nodebox",
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {cracky = 1},
	drop = "infrastructure:boom_barrier_arm_h_lightfirst",
	node_box = {
		type = "fixed",
		fixed = {
			{-1/8, -1/2, -1/2, 1/8, 1/2, -7/16},
			{-1/8, -1/2, -5/16, 1/8, 1/2, -1/4},
			{-1/8, -1/2, -1/2, -1/16, 1/2, -1/4},
			{1/16, -1/2, -1/2, 1/8, 1/2, -1/4},
			{0, -1/8, -1/4, 0, 1/8, 0}
		}
	},
	selection_box = {
		type = "fixed",
		fixed = {
			{-1/8, -1/2, -1/2, 1/8, 1/2, -1/4}
		}
	}
})

minetest.register_alias("infrastructure:boom_barrier_mechanism", "infrastructure:boom_barrier_top_h")
minetest.register_alias("infrastructure:boom_barrier_arm", "infrastructure:boom_barrier_arm_h_lightfirst")