1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
local setmetatable = setmetatable
local mathMax = math.max
local mathFloor = math.floor
local osClock = os.clock
_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
self:_onTimer()
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 = osClock()
function m.update()
local currentClock = osClock()
local delta = currentClock - lastClock
lastClock = currentClock
if curIndex ~= 0 then
curFrame = curFrame - 1
end
maxFrame = maxFrame + delta * 1000.0
while curFrame < maxFrame do
curFrame = curFrame + 1
onTick()
end
end
return m
|
