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|
local time = require 'bee.time'
local setmetatable = setmetatable
local mathMax = math.max
local mathFloor = math.floor
local monotonic = time.monotonic
local xpcall = xpcall
local logError = log.error
_ENV = nil
local curFrame = 0
local maxFrame = 0
local curIndex = 0
local freeQueue = {}
local timer = {}
local function allocQueue()
local n = #freeQueue
if n > 0 then
local r = freeQueue[n]
freeQueue[n] = nil
return r
else
return {}
end
end
local function mTimeout(self, timeout)
if self._pauseRemaining or self._running then
return
end
local ti = curFrame + timeout
local q = timer[ti]
if q == nil then
q = allocQueue()
timer[ti] = q
end
self._timeoutFrame = ti
self._running = true
q[#q + 1] = self
end
local function mWakeup(self)
if self._removed then
return
end
self._running = false
if self._onTimer then
xpcall(self._onTimer, logError, self)
end
if self._removed then
return
end
if self._timerCount then
if self._timerCount > 1 then
self._timerCount = self._timerCount - 1
mTimeout(self, self._timeout)
else
self._removed = true
end
else
mTimeout(self, self._timeout)
end
end
local function getRemaining(self)
if self._removed then
return 0
end
if self._pauseRemaining then
return self._pauseRemaining
end
if self._timeoutFrame == curFrame then
return self._timeout or 0
end
return self._timeoutFrame - curFrame
end
local function onTick()
local q = timer[curFrame]
if q == nil then
curIndex = 0
return
end
for i = curIndex + 1, #q do
local callback = q[i]
curIndex = i
q[i] = nil
if callback then
mWakeup(callback)
end
end
curIndex = 0
timer[curFrame] = nil
freeQueue[#freeQueue + 1] = q
end
local m = {}
local mt = {}
mt.__index = mt
mt.type = 'timer'
function mt:__tostring()
return '[table:timer]'
end
function mt:__call()
if self._onTimer then
self:_onTimer()
end
end
function mt:remove()
self._removed = true
end
function mt:pause()
if self._removed or self._pauseRemaining then
return
end
self._pauseRemaining = getRemaining(self)
self._running = false
local ti = self._timeoutFrame
local q = timer[ti]
if q then
for i = #q, 1, -1 do
if q[i] == self then
q[i] = false
return
end
end
end
end
function mt:resume()
if self._removed or not self._pauseRemaining then
return
end
local timeout = self._pauseRemaining
self._pauseRemaining = nil
mTimeout(self, timeout)
end
function mt:restart()
if self._removed or self._pauseRemaining or not self._running then
return
end
local ti = self._timeoutFrame
local q = timer[ti]
if q then
for i = #q, 1, -1 do
if q[i] == self then
q[i] = false
break
end
end
end
self._running = false
mTimeout(self, self._timeout)
end
function mt:remaining()
return getRemaining(self) / 1000.0
end
function mt:onTimer()
self:_onTimer()
end
function m.wait(timeout, onTimer)
local t = setmetatable({
['_timeout'] = mathMax(mathFloor(timeout * 1000.0), 1),
['_onTimer'] = onTimer,
['_timerCount'] = 1,
}, mt)
mTimeout(t, t._timeout)
return t
end
function m.loop(timeout, onTimer)
local t = setmetatable({
['_timeout'] = mathFloor(timeout * 1000.0),
['_onTimer'] = onTimer,
}, mt)
mTimeout(t, t._timeout)
return t
end
function m.timer(timeout, count, onTimer)
if count == 0 then
return m.loop(timeout, onTimer)
end
local t = setmetatable({
['_timeout'] = mathFloor(timeout * 1000.0),
['_onTimer'] = onTimer,
['_timerCount'] = count,
}, mt)
mTimeout(t, t._timeout)
return t
end
function m.clock()
return curFrame / 1000.0
end
local lastClock = monotonic()
function m.update()
local currentClock = monotonic()
local delta = currentClock - lastClock
lastClock = currentClock
if curIndex ~= 0 then
curFrame = curFrame - 1
end
maxFrame = maxFrame + delta
while curFrame < maxFrame do
curFrame = curFrame + 1
onTick()
end
end
return m
|
