corals.lua

local function coral_on_place(itemstack, placer, pointed_thing)
	if pointed_thing.type ~= "node" or not placer then
		return itemstack
	end
	local player_name = placer:get_player_name()
	local pos_under = pointed_thing.under
	local pos_above = pointed_thing.above
	local node_under = minetest.get_node(pos_under)
	local def_under = minetest.registered_nodes[node_under.name]
	if def_under and def_under.on_rightclick and not placer:get_player_control().sneak then
		return def_under.on_rightclick(pos_under, node_under,
				placer, itemstack, pointed_thing) or itemstack
	end
	if node_under.name ~= "default:coral_skeleton" or
			minetest.get_node(pos_above).name ~= "default:water_source" then
		return itemstack
	end
	if minetest.is_protected(pos_under, player_name) or
			minetest.is_protected(pos_above, player_name) then
		minetest.log("action", player_name
			.. " tried to place " .. itemstack:get_name()
			.. " at protected position "
			.. minetest.pos_to_string(pos_under))
		minetest.record_protection_violation(pos_under, player_name)
		return itemstack
	end
	node_under.name = itemstack:get_name()
	minetest.set_node(pos_under, node_under)
	if not (creative and creative.is_enabled_for(player_name)) then
		itemstack:take_item()
	end
	return itemstack
end



-- NODES


minetest.register_node("water_life:coralmagenta", {
	description = "Magenta Coral",
	drawtype = "plantlike_rooted",
	waving = 1,
	paramtype = "light",
	tiles = {"default_coral_skeleton.png"},
	special_tiles = {{name = "water_life_coralmagenta.png", tileable_vertical = true}},
	inventory_image = "water_life_coralmagenta.png",
	groups = {flora = 1, snappy = 3},
	selection_box = {
		type = "fixed",
		fixed = {
				{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
				{-4/16, 0.5, -4/16, 4/16, 1.5, 4/16},
		},
	},
	node_dig_prediction = "default:coral_skeleton",
	node_placement_prediction = "",
	sounds = default.node_sound_stone_defaults({
		dig = {name = "default_dig_snappy", gain = 0.2},
		dug = {name = "default_grass_footstep", gain = 0.25},
	}),

	on_place = coral_on_place,

	after_destruct  = function(pos, oldnode)
		minetest.set_node(pos, {name = "default:coral_skeleton"})
	end,
})

minetest.register_node("water_life:coralskyblue", {
	description = "Skyblue Coral",
	drawtype = "plantlike_rooted",
	waving = 1,
	paramtype = "light",
	tiles = {"default_coral_skeleton.png"},
	special_tiles = {{name = "water_life_coralskyblue.png", tileable_vertical = true}},
	inventory_image = "water_life_coralskyblue.png",
	groups = {flora = 1, snappy = 3},
	selection_box = {
		type = "fixed",
		fixed = {
				{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
				{-4/16, 0.5, -4/16, 4/16, 1.5, 4/16},
		},
	},
	node_dig_prediction = "default:coral_skeleton",
	node_placement_prediction = "",
	sounds = default.node_sound_stone_defaults({
		dig = {name = "default_dig_snappy", gain = 0.2},
		dug = {name = "default_grass_footstep", gain = 0.25},
	}),

	on_place = coral_on_place,

	after_destruct  = function(pos, oldnode)
		minetest.set_node(pos, {name = "default:coral_skeleton"})
	end,
})


	minetest.register_decoration({
		name = ":default:corals",
		deco_type = "simple",
		place_on = {"default:sand"},
		place_offset_y = -1,
		sidelen = 4,
		noise_params = {
			offset = -4,
			scale = 4,
			spread = {x = 50, y = 50, z = 50},
			seed = 7013,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {
			"desert_ocean",
			"savanna_ocean",
			"rainforest_ocean",
		},
		y_max = -2,
		y_min = -8,
		flags = "force_placement",
		decoration = {
			"default:coral_green", "default:coral_pink",
			"default:coral_cyan", "default:coral_brown",
			"default:coral_orange", "default:coral_skeleton",
			"water_life:coralmagenta", "water_life:coralskyblue"
		},
	})