69 lines
2.0 KiB
Lua
69 lines
2.0 KiB
Lua
-- LUALOCALS < ---------------------------------------------------------
|
|
local error, math, minetest, nodecore, type
|
|
= error, math, minetest, nodecore, type
|
|
local math_floor, math_sqrt
|
|
= math.floor, math.sqrt
|
|
-- LUALOCALS > ---------------------------------------------------------
|
|
|
|
function nodecore.register_soaking_abm(def)
|
|
def.qtyfield = def.qtyfield or "soakqty"
|
|
def.timefield = def.timefield or "soaktime"
|
|
|
|
def.soakinterval = def.soakinterval or ((def.interval or 1) * (def.chance or 1))
|
|
|
|
if not def.soakrate then error("soaking abm missing soakrate callback") end
|
|
if not def.soakcheck then error("soaking abm missing soakcheck callback") end
|
|
|
|
def.soakvary = def.soakvary or 0.25
|
|
if not def.soakrand then
|
|
if def.soakvary then
|
|
def.soakrand = function(rate, ticks)
|
|
return rate * (1 + def.soakvary * nodecore.boxmuller()
|
|
/ math_sqrt(ticks)) * ticks
|
|
end
|
|
else
|
|
def.soakrand = function(rate, ticks) return rate * ticks end
|
|
end
|
|
end
|
|
|
|
def.action = function(pos, ...)
|
|
local now = minetest.get_gametime()
|
|
|
|
local meta = minetest.get_meta(pos)
|
|
local total = meta:get_float(def.qtyfield) or 0
|
|
local start = meta:get_float(def.timefield)
|
|
start = start and start ~= 0 and start or now
|
|
|
|
local rate = 0
|
|
local delta = 0
|
|
if start <= now then
|
|
rate = def.soakrate(pos, ...)
|
|
if rate == false then
|
|
meta:set_string(def.qtyfield, "")
|
|
meta:set_string(def.timefield, "")
|
|
return
|
|
end
|
|
rate = rate or 0
|
|
local ticks = 1 + math_floor((now - start) / def.soakinterval)
|
|
delta = def.soakrand(rate, ticks)
|
|
total = total + delta
|
|
start = start + ticks * def.soakinterval
|
|
end
|
|
|
|
local set = def.soakcheck({
|
|
rate = rate,
|
|
delta = delta,
|
|
total = total
|
|
}, pos, ...)
|
|
if set == false then
|
|
meta:set_string(def.qtyfield, "")
|
|
meta:set_string(def.timefield, "")
|
|
return
|
|
end
|
|
meta:set_float(def.qtyfield, set and type(set) == "number" and set or total)
|
|
meta:set_float(def.timefield, start)
|
|
end
|
|
|
|
return nodecore.register_limited_abm(def)
|
|
end
|