-- mod check and sound settings

local def = core.get_modpath("default")
local mcl = core.get_modpath("mcl_core")
local snd = mcl and mcl_sounds.node_sound_glass_defaults() or default.node_sound_glass_defaults()

-- Nyan Cat node

core.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 = 15,
	paramtype2 = "facedir",
	groups = { cracky = 2, handy = 1 },
	is_ground_content = false,
	sounds = snd,
	_mcl_hardness = 1,
})

-- Rainbow node

core.register_node(":nyancat:nyancat_rainbow", {
	description = "Rainbow",
	tiles = {
		"nyancat_rainbow.png^[transformR90",
		"nyancat_rainbow.png^[transformR90",
		"nyancat_rainbow.png",
	},
	paramtype = "light",
	light_source = 15,
	paramtype2 = "facedir",
	groups = { cracky = 2, handy = 1 },
	is_ground_content = false,
	sounds = snd,
	_mcl_hardness = 1,
})

-- Fuels

core.register_craft({
	type = "fuel",
	recipe = "nyancat:nyancat",
	burntime = 10,
})

core.register_craft({
	type = "fuel",
	recipe = "nyancat:nyancat_rainbow",
	burntime = 10,
})

-- helper function to place Nyan/Pup/Moo with rainbow tail

local types = { "nyancat:nyancat" }

local function place(pos, facedir, length)
	if facedir > 3 then
		facedir = 0
	end

	local tailvec = core.facedir_to_dir(facedir)
	local p = { x = pos.x, y = pos.y, z = pos.z }
	local num = math.random(#types)

	core.swap_node(p, { name = types[num], param2 = facedir })

	for i = 1, length do
		p.x = p.x + tailvec.x
		p.z = p.z + tailvec.z

		core.swap_node(p, { name = "nyancat:nyancat_rainbow", param2 = facedir })
	end
end

-- Do we generate PB&J Pup and Nyan Cat's in world?

local 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 volume = (maxp.x - minp.x + 1) * (y_max - y_min + 1) * (maxp.z - minp.z + 1)
	local pr = PseudoRandom(seed + 9324342)
	local max_num_nyancats = math.floor(volume / (16 * 16 * 16))

	for i = 1, max_num_nyancats do
		if pr:next(0, 1000) == 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}
			nyancat.place(p0, pr:next(0, 3), pr:next(3, 15))
		end
	end

end

core.register_on_generated(generate)

if def then
	default.generate_nyancats = generate
end --Legacy

-- Legacy

core.register_alias("default:nyancat", "nyancat:nyancat")
core.register_alias("default:nyancat_rainbow", "nyancat:nyancat_rainbow")

if def then
	default.make_nyancat = place
end

print("[MOD] PB&J Pup loaded")