minetest.register_node("pbj_pup:pbj_pup", {
    description = "PB&J Pup",
    tiles = {
        "pbj_pup_sides.png",
        "pbj_pup_jelly.png",
        "pbj_pup_sides.png",
        "pbj_pup_sides.png",
        "pbj_pup_back.png",
        "pbj_pup_front.png"
    },
    paramtype = "light",
    light_source = default.LIGHT_MAX,
    paramtype2 = "facedir",
    groups = {cracky = 2},
    is_ground_content = false,
    legacy_facedir_simple = true,
    sounds = default.node_sound_defaults(),
})

minetest.register_craft({
    type = "fuel",
    recipe = "pbj_pup:pbj_pup",
    burntime = 1,
})

minetest.register_node(":nyancat:nyancat", {
    description = "Nyan Cat",
    tiles = {
        "nyancat_side.png",
        "nyancat_side.png",
        "nyancat_side.png",
        "nyancat_side.png",
        "nyancat_back.png",
        "nyancat_front.png"
    },
    paramtype = "light",
    light_source = default.LIGHT_MAX,
    paramtype2 = "facedir",
    groups = {cracky = 2},
    is_ground_content = false,
    legacy_facedir_simple = true,
    sounds = default.node_sound_defaults(),
})

minetest.register_craft({
    type = "fuel",
    recipe = "nyancat:nyancat",
    burntime = 1,
})

minetest.register_node(":nyancat:nyancat_rainbow", {
    description = "Rainbow",
    tiles = {
        "nyancat_rainbow.png^[transformR90",
        "nyancat_rainbow.png^[transformR90",
        "nyancat_rainbow.png"
    },
    paramtype = "light",
    light_source = default.LIGHT_MAX,
    paramtype2 = "facedir",
    groups = {cracky = 2},
    is_ground_content = false,
    sounds = default.node_sound_defaults(),
})

minetest.register_craft({
    type = "fuel",
    recipe = "nyancat:nyancat_rainbow",
    burntime = 1,
})

-- Place Nyan or Pup with Rainbow
function place(pos, facedir, length)

    if facedir > 3 then
        facedir = 0
    end

    local tailvec = minetest.facedir_to_dir(facedir)
    local p = {x = pos.x, y = pos.y, z = pos.z}

    if math.random(1, 2) == 1 then
        minetest.set_node(p, {name = "pbj_pup:pbj_pup", param2 = facedir})
    else
        minetest.set_node(p, {name = "nyancat:nyancat", param2 = facedir})
    end

    for i = 1, length do
        p.x = p.x + tailvec.x
        p.z = p.z + tailvec.z
        minetest.set_node(p, {name = "nyancat:nyancat_rainbow", param2 = facedir})
    end
end

-- Do we generate PB&J Pup and Nyan Cat's in world?
if minetest.setting_getbool("pbj_pup_generate") ~= false then

    function generate(minp, maxp, seed)

        local height_min = -31000
        local height_max = -32
        local chance = 1000

        if maxp.y < height_min or minp.y > height_max then
            return
        end

        local y_min = math.max(minp.y, height_min)
        local y_max = math.min(maxp.y, height_max)
        local pr = PseudoRandom(seed + 9324342)

        if pr:next(0, chance) == 0 then

            local x0 = pr:next(minp.x, maxp.x)
            local y0 = pr:next(minp.y, maxp.y)
            local z0 = pr:next(minp.z, maxp.z)
            local p0 = {x = x0, y = y0, z = z0}

            place(p0, pr:next(0, 3), pr:next(3, 15))
        end
    end

    minetest.register_on_generated(generate)
end

-- Legacy
minetest.register_alias("default:nyancat", "nyancat:nyancat")
minetest.register_alias("default:nyancat_rainbow", "nyancat:nyancat_rainbow")
minetest.register_alias("pbj_pup:pbj_pup_candies", "nyancat:nyancat_rainbow")
minetest.register_alias("nyancat", "nyancat:nyancat")
minetest.register_alias("nyancat_rainbow", "nyancat:nyancat_rainbow")
default.make_nyancat = place
default.generate_nyancats = generate

-- More compatibility with old "nyancat" mod
nyancat = {}

function nyancat.place(pos, facedir, length)
    if  facedir > 3 then
        facedir = 0
    end
    local tailvec = minetest.facedir_to_dir(facedir)
    local p = {x = pos.x, y = pos.y, z = pos.z}
    minetest.set_node(p, {name = "nyancat:nyancat", param2 = facedir})
    for i = 1, length do
        p.x = p.x + tailvec.x
        p.z = p.z + tailvec.z
        minetest.set_node (p, {
            name = "nyancat:nyancat_rainbow", param2 = facedir
        })
    end
end