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path: root/farming/init.lua
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--[[
	Farming Redo Mod
	by TenPlus1
	NEW growing routine by prestidigitator
	auto-refill by crabman77
]]

farming = {
	mod = "redo",
	version = "20180929",
	path = minetest.get_modpath("farming"),
	select = {
		type = "fixed",
		fixed = {-0.5, -0.5, -0.5, 0.5, -5/16, 0.5}
	},
	registered_plants = {}
}


local creative_mode_cache = minetest.settings:get_bool("creative_mode")

function farming.is_creative(name)
	return creative_mode_cache or minetest.check_player_privs(name, {creative = true})
end


local statistics = dofile(farming.path .. "/statistics.lua")

-- Intllib
local S = dofile(farming.path .. "/intllib.lua")
farming.intllib = S


-- Utility Function
local time_speed = tonumber(minetest.settings:get("time_speed")) or 72
local SECS_PER_CYCLE = (time_speed > 0 and (24 * 60 * 60) / time_speed) or 0
local function clamp(x, min, max)
	return (x < min and min) or (x > max and max) or x
end


-- return amount of day or night that has elapsed
-- dt is time elapsed, count_day if true counts day, otherwise night
local function day_or_night_time(dt, count_day)

	local t_day = minetest.get_timeofday()
	local t1_day = t_day - dt / SECS_PER_CYCLE
	local t1_c, t2_c  -- t1_c < t2_c and t2_c always in [0, 1)

	if count_day then

		if t_day < 0.25 then
			t1_c = t1_day + 0.75  -- Relative to sunup, yesterday
			t2_c = t_day  + 0.75
		else
			t1_c = t1_day - 0.25  -- Relative to sunup, today
			t2_c = t_day  - 0.25
		end
	else
		if t_day < 0.75 then
			t1_c = t1_day + 0.25  -- Relative to sundown, yesterday
			t2_c = t_day  + 0.25
		else
			t1_c = t1_day - 0.75  -- Relative to sundown, today
			t2_c = t_day  - 0.75
		end
	end

	local dt_c = clamp(t2_c, 0, 0.5) - clamp(t1_c, 0, 0.5)  -- this cycle

	if t1_c < -0.5 then
		local nc = math.floor(-t1_c)
		t1_c = t1_c + nc
		dt_c = dt_c + 0.5 * nc + clamp(-t1_c - 0.5, 0, 0.5)
	end

	return dt_c * SECS_PER_CYCLE
end


-- Growth Logic
local STAGE_LENGTH_AVG = 160.0
local STAGE_LENGTH_DEV = STAGE_LENGTH_AVG / 6


-- return plant name and stage from node provided
local function plant_name_stage(node)

	local name

	if type(node) == "table" then

		if node.name then
			name = node.name
		elseif node.x and node.y and node.z then
			node = minetest.get_node_or_nil(node)
			name = node and node.name
		end
	else
		name = tostring(node)
	end

	if not name or name == "ignore" then
		return nil
	end

	local sep_pos = name:find("_[^_]+$")

	if sep_pos and sep_pos > 1 then

		local stage = tonumber(name:sub(sep_pos + 1))

		if stage and stage >= 0 then
			return name:sub(1, sep_pos - 1), stage
		end
	end

	return name, 0
end


-- Map from node name to
-- { plant_name = ..., name = ..., stage = n, stages_left = { node_name, ... } }

local plant_stages = {}

farming.plant_stages = plant_stages

--- Registers the stages of growth of a (possible plant) node.
 --
 -- @param node
 --    Node or position table, or node name.
 -- @return
 --    The (possibly zero) number of stages of growth the plant will go through
 --    before being fully grown, or nil if not a plant.

local register_plant_node

-- Recursive helper
local function reg_plant_stages(plant_name, stage, force_last)

	local node_name = plant_name and plant_name .. "_" .. stage
	local node_def = node_name and minetest.registered_nodes[node_name]

	if not node_def then
		return nil
	end

	local stages = plant_stages[node_name]

	if stages then
		return stages
	end

	if minetest.get_item_group(node_name, "growing") > 0 then

		local ns = reg_plant_stages(plant_name, stage + 1, true)
		local stages_left = (ns and { ns.name, unpack(ns.stages_left) }) or {}

		stages = {
			plant_name = plant_name,
			name = node_name,
			stage = stage,
			stages_left = stages_left
		}

		if #stages_left > 0 then

			local old_constr = node_def.on_construct
			local old_destr  = node_def.on_destruct

			minetest.override_item(node_name,
				{
					on_construct = function(pos)

						if old_constr then
							old_constr(pos)
						end

						farming.handle_growth(pos)
					end,

					on_destruct = function(pos)

						minetest.get_node_timer(pos):stop()

						if old_destr then
							old_destr(pos)
						end
					end,

					on_timer = function(pos, elapsed)
						return farming.plant_growth_timer(pos, elapsed, node_name)
					end,
				})
		end

	elseif force_last then

		stages = {
			plant_name = plant_name,
			name = node_name,
			stage = stage,
			stages_left = {}
		}
	else
		return nil
	end

	plant_stages[node_name] = stages

	return stages
end


local register_plant_node = function(node)

	local plant_name, stage = plant_name_stage(node)

	if plant_name then

		local stages = reg_plant_stages(plant_name, stage, false)
		return stages and #stages.stages_left
	else
		return nil
	end
end


local function set_growing(pos, stages_left)

	if not stages_left then
		return
	end

	local timer = minetest.get_node_timer(pos)

	if stages_left > 0 then

		if not timer:is_started() then

			local stage_length = statistics.normal(STAGE_LENGTH_AVG, STAGE_LENGTH_DEV)

			stage_length = clamp(stage_length, 0.5 * STAGE_LENGTH_AVG, 3.0 * STAGE_LENGTH_AVG)

			timer:set(stage_length, -0.5 * math.random() * STAGE_LENGTH_AVG)
		end

	elseif timer:is_started() then
		timer:stop()
	end
end


-- detects a crop at given position, starting or stopping growth timer when needed
function farming.handle_growth(pos, node)

	if not pos then
		return
	end

	local stages_left = register_plant_node(node or pos)

	if stages_left then
		set_growing(pos, stages_left)
	end
end


minetest.after(0, function()

	for _, node_def in ipairs(minetest.registered_nodes) do
		register_plant_node(node_def)
	end
end)


-- Just in case a growing type or added node is missed (also catches existing
-- nodes added to map before timers were incorporated).
minetest.register_abm({
	nodenames = { "group:growing" },
	interval = 300,
	chance = 1,
	catch_up = false,
	action = function(pos, node)
		farming.handle_growth(pos, node)
	end
})


-- Plant timer function that grows plants under the right conditions.
function farming.plant_growth_timer(pos, elapsed, node_name)

	local stages = plant_stages[node_name]

	if not stages then
		return false
	end

	local max_growth = #stages.stages_left

	if max_growth <= 0 then
		return false
	end

	-- custom growth check
	local chk = minetest.registered_nodes[node_name].growth_check

	if chk then

		if chk(pos, node_name) then
			return true
		end

	-- otherwise check for wet soil beneath crop
	else
		local under = minetest.get_node({ x = pos.x, y = pos.y - 1, z = pos.z })

		if minetest.get_item_group(under.name, "soil") < 3 then
			return true
		end
	end

	local growth
	local light_pos = {x = pos.x, y = pos.y, z = pos.z} --  was y + 1
	local lambda = elapsed / STAGE_LENGTH_AVG

	if lambda < 0.1 then
		return true
	end

	local MIN_LIGHT = minetest.registered_nodes[node_name].minlight or 13
	local MAX_LIGHT = minetest.registered_nodes[node_name].maxlight or 15
	--print ("---", MIN_LIGHT, MAX_LIGHT)

	if max_growth == 1 or lambda < 2.0 then

		local light = (minetest.get_node_light(light_pos) or 0)
		--print ("light level:", light)

		if light < MIN_LIGHT or light > MAX_LIGHT then
			return true
		end

		growth = 1
	else
		local night_light  = (minetest.get_node_light(light_pos, 0) or 0)
		local day_light    = (minetest.get_node_light(light_pos, 0.5) or 0)
		local night_growth = night_light >= MIN_LIGHT and night_light <= MAX_LIGHT
		local day_growth = day_light >= MIN_LIGHT and day_light <= MAX_LIGHT

		if not night_growth then

			if not day_growth then
				return true
			end

			lambda = day_or_night_time(elapsed, true) / STAGE_LENGTH_AVG

		elseif not day_growth then

			lambda = day_or_night_time(elapsed, false) / STAGE_LENGTH_AVG
		end

		growth = statistics.poisson(lambda, max_growth)

		if growth < 1 then
			return true
		end
	end

	if minetest.registered_nodes[stages.stages_left[growth]] then

		local p2 = minetest.registered_nodes[stages.stages_left[growth] ].place_param2 or 1

		minetest.swap_node(pos, {name = stages.stages_left[growth], param2 = p2})
	else
		return true
	end

	return growth ~= max_growth
end


-- refill placed plant by crabman (26/08/2015) updated by TenPlus1
function farming.refill_plant(player, plantname, index)

	local inv = player:get_inventory()
	local old_stack = inv:get_stack("main", index)

	if old_stack:get_name() ~= "" then
		return
	end

	for i, stack in ipairs(inv:get_list("main")) do

		if stack:get_name() == plantname and i ~= index then

			inv:set_stack("main", index, stack)
			stack:clear()
			inv:set_stack("main", i, stack)

			return
		end
	end
end


-- Place Seeds on Soil
function farming.place_seed(itemstack, placer, pointed_thing, plantname)

	local pt = pointed_thing

	-- check if pointing at a node
	if not pt or pt.type ~= "node" then
		return
	end

	local under = minetest.get_node(pt.under)

	-- am I right-clicking on something that has a custom on_place set?
	-- thanks to Krock for helping with this issue :)
	local def = minetest.registered_nodes[under.name]
	if placer and def and def.on_rightclick then
		return def.on_rightclick(pt.under, under, placer, itemstack)
	end

	local above = minetest.get_node(pt.above)

	-- check if pointing at the top of the node
	if pt.above.y ~= pt.under.y + 1 then
		return
	end

	-- return if any of the nodes is not registered
	if not minetest.registered_nodes[under.name]
	or not minetest.registered_nodes[above.name] then
		return
	end

	-- can I replace above node, and am I pointing at soil
	if not minetest.registered_nodes[above.name].buildable_to
	or minetest.get_item_group(under.name, "soil") < 2
	-- avoid multiple seed placement bug
	or minetest.get_item_group(above.name, "plant") ~= 0 then
		return
	end

	-- is player planting seed?
	local name = placer and placer:get_player_name() or ""

	-- if not protected then add node and remove 1 item from the itemstack
	if not minetest.is_protected(pt.above, name) then

		local p2 = minetest.registered_nodes[plantname].place_param2 or 1

		minetest.set_node(pt.above, {name = plantname, param2 = p2})

--minetest.get_node_timer(pt.above):start(1)

		minetest.sound_play("default_place_node", {pos = pt.above, gain = 1.0})

		if placer and not farming.is_creative(placer:get_player_name()) then

			local name = itemstack:get_name()

			itemstack:take_item()

			-- check for refill
			if itemstack:get_count() == 0 then

				minetest.after(0.10,
					farming.refill_plant,
					placer,
					name,
					placer:get_wield_index()
				)
			end
		end

		return itemstack
	end
end


-- Function to register plants (default farming compatibility)
farming.register_plant = function(name, def)

	if not def.steps then
		return nil
	end

	local mname = name:split(":")[1]
	local pname = name:split(":")[2]

	-- Check def
	def.description = def.description or S("Seed")
	def.inventory_image = def.inventory_image or "unknown_item.png"
	def.minlight = def.minlight or 13
	def.maxlight = def.maxlight or 15

	-- Register seed
	minetest.register_node(":" .. mname .. ":seed_" .. pname, {

		description = def.description,
		tiles = {def.inventory_image},
		inventory_image = def.inventory_image,
		wield_image = def.inventory_image,
		drawtype = "signlike",
		groups = {seed = 1, snappy = 3, attached_node = 1, flammable = 2},
		paramtype = "light",
		paramtype2 = "wallmounted",
		walkable = false,
		sunlight_propagates = true,
		selection_box = farming.select,
		place_param2 = def.place_param2 or nil,
		next_plant = mname .. ":" .. pname .. "_1",

		on_place = function(itemstack, placer, pointed_thing)
			return farming.place_seed(itemstack, placer,
				pointed_thing, mname .. ":" .. pname .. "_1")
		end,
	})

	-- Register harvest
	minetest.register_craftitem(":" .. mname .. ":" .. pname, {
		description = pname:gsub("^%l", string.upper),
		inventory_image = mname .. "_" .. pname .. ".png",
		groups = def.groups or {flammable = 2},
	})

	-- Register growing steps
	for i = 1, def.steps do

		local base_rarity = 1
		if def.steps ~= 1 then
			base_rarity =  8 - (i - 1) * 7 / (def.steps - 1)
		end
		local drop = {
			items = {
				{items = {mname .. ":" .. pname}, rarity = base_rarity},
				{items = {mname .. ":" .. pname}, rarity = base_rarity * 2},
				{items = {mname .. ":seed_" .. pname}, rarity = base_rarity},
				{items = {mname .. ":seed_" .. pname}, rarity = base_rarity * 2},
			}
		}

		local g = {
			snappy = 3, flammable = 2, plant = 1, growing = 1,
			attached_node = 1, not_in_creative_inventory = 1,
		}

		-- Last step doesn't need growing=1 so Abm never has to check these
		if i == def.steps then
			g.growing = 0
		end

		local node_name = mname .. ":" .. pname .. "_" .. i

		local next_plant = nil

		if i < def.steps then
			next_plant = mname .. ":" .. pname .. "_" .. (i + 1)
		end

		minetest.register_node(node_name, {
			drawtype = "plantlike",
			waving = 1,
			tiles = {mname .. "_" .. pname .. "_" .. i .. ".png"},
			paramtype = "light",
			paramtype2 = def.paramtype2,
			place_param2 = def.place_param2,
			walkable = false,
			buildable_to = true,
			sunlight_propagates = true,
			drop = drop,
			selection_box = farming.select,
			groups = g,
			sounds = default.node_sound_leaves_defaults(),
			minlight = def.minlight,
			maxlight = def.maxlight,
			next_plant = next_plant,
		})
	end

-- add to farming.registered_plants
farming.registered_plants[mname .. ":" .. pname] = {
	crop = mname .. ":" .. pname,
	seed = mname .. ":seed_" .. pname,
	steps = def.steps,
	minlight = def.minlight,
	maxlight = def.maxlight
}
print(dump(farming.registered_plants[mname .. ":" .. pname]))
	-- Return info
	return {seed = mname .. ":seed_" .. pname, harvest = mname .. ":" .. pname}
end


-- default settings
farming.carrot = true
farming.potato = true
farming.tomato = true
farming.cucumber = true
farming.corn = true
farming.coffee = true
farming.melon = true
farming.pumpkin = true
farming.cocoa = true
farming.raspberry = true
farming.blueberry = true
farming.rhubarb = true
farming.beans = true
farming.grapes = true
farming.barley = true
farming.chili = true
farming.hemp = true
farming.garlic = true
farming.onion = true
farming.pepper = true
farming.pineapple = true
farming.peas = true
farming.beetroot = true
farming.rarety = 0.002 -- 0.006


-- Load new global settings if found inside mod folder
local input = io.open(farming.path.."/farming.conf", "r")
if input then
	dofile(farming.path .. "/farming.conf")
	input:close()
	input = nil
end

-- load new world-specific settings if found inside world folder
local worldpath = minetest.get_worldpath()
local input = io.open(worldpath.."/farming.conf", "r")
if input then
	dofile(worldpath .. "/farming.conf")
	input:close()
	input = nil
end


-- important items
dofile(farming.path.."/soil.lua")
dofile(farming.path.."/hoes.lua")
dofile(farming.path.."/grass.lua")
dofile(farming.path.."/utensils.lua")

-- default crops
dofile(farming.path.."/crops/wheat.lua")
dofile(farming.path.."/crops/cotton.lua")


-- helper function
local function ddoo(file, check)

	if check then
		dofile(farming.path .. "/crops/" .. file)
	end
end

-- add additional crops and food (if enabled)
ddoo("carrot.lua", farming.carrot)
ddoo("potato.lua", farming.potato)
ddoo("tomato.lua", farming.tomato)
ddoo("cucumber.lua", farming.cucumber)
ddoo("corn.lua", farming.corn)
ddoo("coffee.lua", farming.coffee)
ddoo("melon.lua", farming.melon)
ddoo("pumpkin.lua", farming.pumpkin)
ddoo("cocoa.lua", farming.cocoa)
ddoo("raspberry.lua", farming.raspberry)
ddoo("blueberry.lua", farming.blueberry)
ddoo("rhubarb.lua", farming.rhubarb)
ddoo("beans.lua", farming.beans)
ddoo("grapes.lua", farming.grapes)
ddoo("barley.lua", farming.barley)
ddoo("hemp.lua", farming.hemp)
ddoo("garlic.lua", farming.garlic)
ddoo("onion.lua", farming.onion)
ddoo("pepper.lua", farming.pepper)
ddoo("pineapple.lua", farming.pineapple)
ddoo("peas.lua", farming.peas)
ddoo("beetroot.lua", farming.beetroot)
ddoo("chili.lua", farming.chili)

dofile(farming.path.."/food.lua")
dofile(farming.path.."/mapgen.lua")
dofile(farming.path.."/compatibility.lua") -- Farming Plus compatibility
dofile(farming.path.."/lucky_block.lua")