function tardis.demat(name)
	local pos = tardis.get_exterior(name)

	if (minetest.forceload_block(pos)) then
		minetest.set_node (pos, {name = "tardis:tardis_demat"})

		tardis.set_vortex(true, name)

		minetest.sound_play ("tardis_demat", {
			pos               = pos,
			max_hear_distance = 100,
			gain              = 10 ,
		})
		return true
	else return false

	end
end


minetest.register_node("tardis:tardis_demat", {
	tiles             = {"tardis_exterior.png^[opacity:255"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,
	light_source      = 5,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_1"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(7)
	end,
})

minetest.register_node("tardis:tardis_demat_1", {
	tiles             = {"tardis_exterior.png^[opacity:225"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,
	light_source      = 10,


	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_2"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(1)
	end,
})

minetest.register_node("tardis:tardis_demat_2", {
	tiles             = {"tardis_exterior.png^[opacity:200"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_3"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(1)
	end,
})

minetest.register_node("tardis:tardis_demat_3", {
	tiles             = {"tardis_exterior.png^[opacity:175"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,
	light_source      = 10,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_4"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(1)
	end,
})

minetest.register_node("tardis:tardis_demat_4", {
	tiles             = {"tardis_exterior.png^[opacity:150"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_5"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(0.5)
	end,
})

minetest.register_node("tardis:tardis_demat_5", {
	tiles             = {"tardis_exterior.png^[opacity:125"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,
	light_source      = 10,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_6"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(1)
	end,
})

minetest.register_node("tardis:tardis_demat_6", {
	tiles             = {"tardis_exterior.png^[opacity:100"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_7"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(1)
	end,
})

minetest.register_node("tardis:tardis_demat_7", {
	tiles             = {"tardis_exterior.png^[opacity:75"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	light_source      = 10,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_8"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(1)
	end,
})

minetest.register_node("tardis:tardis_demat_8", {
	tiles             = {"tardis_exterior.png^[opacity:50"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_9"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(1)
	end,
})

minetest.register_node("tardis:tardis_demat_9", {
	tiles             = {"tardis_exterior.png^[opacity:25"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,
	light_source      = 7,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_10"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(1)
	end,
})

minetest.register_node("tardis:tardis_demat_10", {
	tiles             = {"tardis_exterior.png^[opacity:10"},
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "tardis:tardis_demat_11"})
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(0.5)
	end,
})

minetest.register_node("tardis:tardis_demat_11", {
	tiles             = {"tardis_exterior.png^[opacity:5"} ,
	use_texture_alpha = true,
	drawtype          = "mesh",
	mesh              = "tardis_exterior.obj",
	paramtype         = "light",
	is_ground_content = true,
	light_source      = 5,

	on_timer = function(pos)
		minetest.set_node(pos, {name = "air"})
		minetest.forceload_free_block(pos)
	end,

	on_construct = function(pos)
		minetest.get_node_timer(pos):start(1)
	end,
})