stimulators/init.lua

--[[

	Copyright 2024 Andrey Stepanov <standmit@yandex.ru>

	Permission is hereby granted, free of charge, to any person obtaining
	a copy of this software and associated documentation files (the
	"Software"), to deal in the Software without restriction, including
	without limitation the rights to use, copy, modify, merge, publish,
	distribute, sublicense, and/or sell copies of the Software, and to
	permit persons to whom the Software is furnished to do so, subject
	to the following conditions:

	The above copyright notice and this permission notice shall be included
	in all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
	KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
	WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
	LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
	OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
	WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

]]--

local S = minetest.get_translator("stimulators")

local fast_secs = minetest.settings:get("stimulators.fastpotion_duration") or (2 * 60)
local timer_check = 5 -- seconds per check

-- get player timer
local function get_timer(user)
	if not user then
		return
	end

	local meta = user:get_meta()
	if not meta then
		return ""
	end

	return meta:get_string("stimulators:fast_timer") or ""
end

-- do we have fast privs
local function has_fast(name)
	return minetest.get_player_privs(name).fast
end

-- set player timer
local function set_timer(user, timer)
	local meta = user:get_meta()
	if not meta then
		return
	end

	meta:set_string("stimulators:fast_timer", timer)
end

-- give or revoke fast priv
local function set_fast(user, set)
	local name = user and user:get_player_name()
	if not name then
		return
	end

	local privs = minetest.get_player_privs(name)
	privs.fast = set
	minetest.set_player_privs(name, privs)

	-- when fast removed set timer to temp position
	if set ~= true then
		set_timer(user, "-99")
	end
end

-- after function
local function stimulators_set_fast(user)
	local name = user and user:get_player_name()
	if not name then
		return
	end

	local timer = tonumber(get_timer(user)) or 0

	-- if timer ran out then remove 'fast' privelage
	if timer <= 0 and timer ~= -99 then
		set_fast(user, nil)
		return
	end

	local privs = minetest.get_player_privs(name)

	-- have we already applied 'fast' privelage?
	if not privs.fast then
		set_fast(user, true)
	end

	-- handle timer
	timer = timer - timer_check

	-- show expiration message and play sound
	if timer <= 10 then
		minetest.chat_send_player(
			name,
			minetest.get_color_escape_sequence("#ff5500")
			.. S("Fast timer about to expire!")
		)
		minetest.sound_play(
			"default_dig_dig_immediate",
			{to_player = name, gain = 1.0},
			true
		)
	end

	set_timer(user, timer) -- set update timer

	-- restart checks
	minetest.after(
		timer_check,
		function()
			stimulators_set_fast(user)
		end
	)
end

-- on join /leave
minetest.register_on_joinplayer(
	function(player)
		-- wait 2 seconds before doing fast checks on player
		minetest.after(
			2.0,
			function(player)
				-- get player name and timer
				local name = player and player:get_player_name()
				if not name then
					return
				end

				local timer = get_timer(player)

				-- if timer is blank and player can already fast then default and return
				if timer == "" and has_fast(name) then
					set_timer(player, "-99")
					return
				end

				timer = tonumber(timer) or 0

				-- if timer is set to default then return
				if timer == -99 then
					return
				end

				-- if we got this far and player is fast then start contdown check
				if has_fast(name) then
					minetest.after(
						timer_check,
						function()
							stimulators_set_fast(player)
						end
					)
				end
			end,
			player
		)
	end
)

-- portion item
minetest.register_node(
	"stimulators:fast_potion",
	{
		description = S("Fast Potion"),
		drawtype = "plantlike",
		tiles = {"stimulators_fast_potion.png"},
		inventory_image = "stimulators_fast_potion.png",
		wield_image = "stimulators_fast_potion.png",
		paramtype = "light",
		sunlight_propagates = true,
		walkable = false,
		selection_box = {
			type = "fixed",
			fixed = {-0.2, -0.37, -0.2, 0.2, 0.31, 0.2}
		},
		groups = {dig_immediate = 3},
		sounds = default.node_sound_glass_defaults(),

		on_use = function(itemstack, user, pointed_thing)
			if user.is_fake_player then
				return
			end

			-- get info
			local name = user:get_player_name()
			local privs = minetest.get_player_privs(name)
			local timer = get_timer(user)

			if privs.fast then
				local msg = timer
				if timer == "" or timer == "-99" then
					msg = S("unlimited")
				end

				minetest.chat_send_player(
					name,
					minetest.get_color_escape_sequence("#ffff00")
					.. S("Fast already granted, @1 seconds left!", msg)
				)
				return
			end

			set_timer(user, fast_secs) -- set fast timer

			-- show time remaining
			minetest.chat_send_player(
				name,
				minetest.get_color_escape_sequence("#1eff00")
				.. S("Fast granted, you gave @1 seconds!", fast_secs)
			)

			stimulators_set_fast(user) -- start check

			itemstack:take_item() -- take item

			--return empty bottle
			local inv = user:get_inventory()
			if inv:room_for_item("main", {name = "vessels:glass_bottle"}) then
				user:get_inventory():add_item("main", "vessels:glass_bottle")
			else
				minetest.add_item(user:get_pos(), {name = "vessels:glass_bottle"})
			end
			
			return itemstack
		end
	}
)

-- recipe
minetest.register_craft(
	{
		output = "stimulators:fast_potion 3",
		recipe = {
			{"ethereal:etherium_dust", "farming:chili_powder", "ethereal:etherium_dust"},
			{"farming:sugar",          "farming:salt_crystal", "farming:sugar"         },
			{"ethereal:etherium_dust", "wine:bottle_tequila",  "ethereal:etherium_dust"}
		}
	}
)