minetest/builtin/common/after.lua
Loïc Blot 2c19d51409 [CSM] sound_play & sound_stop support + client_lua_api doc (#5096)
* squashed: CSM: Implement register_globalstep
  * Re-use fatal error mechanism from server to disconnect client on CSM error
  * Little client functions cleanups

* squashed: CSM: add core.after function
  * core.after is shared code between client & server
  * ModApiUtil get_us_time feature enabled for client
2017-03-13 23:56:05 +01:00

44 lines
1013 B
Lua

local jobs = {}
local time = 0.0
local last = core.get_us_time() / 1000000
core.register_globalstep(function(dtime)
local new = core.get_us_time() / 1000000
if new > last then
time = time + (new - last)
else
-- Overflow, we may lose a little bit of time here but
-- only 1 tick max, potentially running timers slightly
-- too early.
time = time + new
end
last = new
if #jobs < 1 then
return
end
-- Iterate backwards so that we miss any new timers added by
-- a timer callback, and so that we don't skip the next timer
-- in the list if we remove one.
for i = #jobs, 1, -1 do
local job = jobs[i]
if time >= job.expire then
core.set_last_run_mod(job.mod_origin)
job.func(unpack(job.arg))
table.remove(jobs, i)
end
end
end)
function core.after(after, func, ...)
assert(tonumber(after) and type(func) == "function",
"Invalid core.after invocation")
jobs[#jobs + 1] = {
func = func,
expire = time + after,
arg = {...},
mod_origin = core.get_last_run_mod()
}
end