intervals.lua

   1 lua_async.intervals = {
   2         pool = {},
   3         executing = {},
   4         last_id = 0,
   5 }
   6
   7 function setInterval(callback, ms, ...)
   8         local id = lua_async.intervals.last_id + 1
   9         lua_async.intervals.last_id = id
  10         local step_time = (ms or 0) / 1000
  11         lua_async.intervals.pool[id] = {
  12                 time_left = step_time,
  13                 step_time = step_time,
  14                 callback = callback,
  15                 args = {...},
  16         }
  17         return id
  18 end
  19
  20 function clearInterval(id)
  21         lua_async.intervals.pool[id] = nil
  22         lua_async.intervals.executing[id] = nil
  23 end
  24
  25 function lua_async.intervals.step(dtime)
  26         lua_async.intervals.executing = table.copy(lua_async.intervals.pool)
  27
  28         for id, interval in pairs(lua_async.intervals.executing) do
  29                 interval.time_left = timeout.time_left - dtime
  30
  31                 if interval.time_left <= 0 then
  32                         interval.callback(unpack(interval.args))
  33                         interval.time_left = interval.step_time
  34                 end
  35         end
  36 end
  37