VoxeLibre/mods/ITEMS/mcl_bamboo/globals.lua

---
--- Generated by EmmyLua(https://github.com/EmmyLua)
--- Created by michieal.
--- DateTime: 12/29/22 12:34 PM -- Restructure Date
---

local modname = minetest.get_current_modname()
local S = minetest.get_translator(modname)
local bamboo = "mcl_bamboo:bamboo"
local DEBUG = false

local strlen = string.len
local substr = string.sub
local rand = math.random

--Bamboo can be planted on moss blocks, grass blocks, dirt, coarse dirt, rooted dirt, gravel, mycelium, podzol, sand, red sand, or mud
mcl_bamboo.bamboo_dirt_nodes = {
	"mcl_core:redsand",
	"mcl_core:sand",
	"mcl_core:dirt",
	"mcl_core:coarse_dirt",
	"mcl_core:dirt_with_grass",
	"mcl_core:podzol",
	"mcl_core:mycelium",
	"mcl_lush_caves:rooted_dirt",
	"mcl_lush_caves:moss",
	"mcl_mud:mud",
}

--- pos: node position; placer: ObjectRef that is placing the item
--- returns: true if protected, otherwise false.
function mcl_bamboo.is_protected(pos, placer)
	local name = placer:get_player_name()
	if minetest.is_protected(pos, name) then
		minetest.record_protection_violation(pos, name)
		return true
	end
	return false
end

function mcl_bamboo.grow_bamboo(pos, _)
	local BAMBOO_SOIL_DIST = -16
	local BAM_MAX_HEIGHT_STPCHK = 11
	local BAM_MAX_HEIGHT_TOP = 15

	local chk_pos
	local soil_pos
	if minetest.get_node_light(pos) < 8 then
		return
	end
	local found = false -- used for the soil check
	local mboo = ""
	for py = -1, BAMBOO_SOIL_DIST, -1 do
		chk_pos = vector.offset(pos, 0, py, 0)
		local name = minetest.get_node(chk_pos).name
		for i = 1, #mcl_bamboo.bamboo_dirt_nodes do
			if name == mcl_bamboo.bamboo_dirt_nodes[i] then
				found = true
				soil_pos = chk_pos
				break
			end
		end
		if found then
			break
		else
			mboo = substr(name, strlen(name) - 3, strlen(name))
			if mboo ~= "mboo" and mboo ~= "oo_1" and mboo ~= "oo_2" and mboo ~= "oo_3" then
				break
			end
		end
	end
	-- requires knowing where the soil node is.
	if not found then
		return
	end
	local grow_amount = rand(1, 32)
	grow_amount = rand(1, 32)
	grow_amount = rand(1, 32)
	grow_amount = rand(1, 32) -- because yeah, not truly random, or even a good prng.
	-- Bonemeal: Grows the bamboo by 1-2 stems. (per the minecraft wiki.)

	for py = 1, BAM_MAX_HEIGHT_TOP do
		chk_pos = vector.offset(pos, 0, py, 0)
		local node_below = minetest.get_node(pos).name
		local name = minetest.get_node(chk_pos).name
		local dist = vector.distance(soil_pos, chk_pos)
		if dist >= BAM_MAX_HEIGHT_STPCHK then
			-- stop growing check.
			if name == "air" then
				local height = rand(BAM_MAX_HEIGHT_STPCHK, BAM_MAX_HEIGHT_TOP)
				if height == dist then
					minetest.set_node(chk_pos, {name = "mcl_bamboo:bamboo_endcap"})
				end
			end
			break
		end
		mboo = substr(name, strlen(name) - 3, strlen(name))
		if name == "air" then
			minetest.set_node(chk_pos, {name = node_below})
			-- handle growing a second node.
			if grow_amount == 2 then
				chk_pos = vector.offset(chk_pos, 0, 1, 0)
				if minetest.get_node(chk_pos).name == "air" then
					minetest.set_node(chk_pos, {name = node_below})
				end
			end
			break
		elseif mboo ~= "mboo" and mboo ~= "oo_1" and mboo ~= "oo_2" and mboo ~= "oo_3" then
			break
		end
	end

end

-- Add Groups function, courtesy of Warr1024.
function mcl_bamboo.addgroups(name, ...)
	local def = minetest.registered_items[name] or error(name .. " not found")
	local groups = {}
	for k, v in pairs(def.groups) do
		groups[k] = v
	end
	local function addall(x, ...)
		if not x then
			return
		end
		groups[x] = 1
		return addall(...)
	end
	addall(...)
	return minetest.override_item(name, {groups = groups})
end