sleep: Difference between revisions

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|gr1= Program Flow
|gr1= Program Flow


|descr= Suspends code execution for given time in seconds. The sleep precision is given by a framerate, the delay given is the minimal delay expected. Must be called inside of a context which is interruptible, i.e. a [[Script (Handle)|script]] executed by [[execVM]] or [[spawn]].
|descr= Suspends code execution for given time in seconds. The sleep precision is given by a framerate, the delay given is the minimal delay expected. Must be called inside of a context which is interruptible, i.e. a [[Script Handle|script]] executed by [[execVM]] or [[spawn]].
{{Feature | Informative |
{{Feature | Informative |
* this command will suspend the code for '''''at least''''' the given amount of time, and can be way more if the [[Scheduler|script scheduler]] is busy.
* this command will suspend the code for '''''at least''''' the given amount of time, and can be way more if the [[Scheduler|script scheduler]] is busy.
Line 24: Line 24:
}}
}}


|s1= '''sleep''' delay
|s1= [[sleep]] delay


|p1= delay: [[Number]] - in seconds. Negative values will not be considered.
|p1= delay: [[Number]] - in seconds. Negative values will not be considered.
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|r1= [[Nothing]]
|r1= [[Nothing]]


|x1= <code>[] [[spawn]] {
|x1= <sqf>
[[sleep]] 5;
0 spawn {
[[hint]] "after (at least) 5 seconds...";
sleep 5;
};</code>
hint "after (at least) 5 seconds...";
};
</sqf>


|x2= <code>[[sleep]] 5 + [[random]] 10; {{cc|incorrect - will only sleep for 5 seconds, as it will be interpreted as (sleep 5) (+(random 10))}}
|x2= <sqf>
[[sleep]] (5 + [[random]] 10); {{cc|correct}}</code>
sleep 5 + random 10; // incorrect - will only sleep for 5 seconds, as it will be interpreted as (sleep 5) (+(random 10))
sleep (5 + random 10); // correct
</sqf>


|x3= <code>[[if]] ([[isMultiplayer]]) [[then]]
|seealso= [[uiSleep]] [[waitUntil]] [[canSuspend]] [[execVM]] [[spawn]] [[sleep vs uiSleep]] [[Control Structures]]
{
}}
[[uiSleep]] 3; {{cc|more precise in (non-pausable) multiplayer}}
} [[else]] {
[[sleep]] 3; {{cc|[[sleep]] gets paused as the game is, usually wanted behaviour}}
};</code>


|seealso= [[uiSleep]], [[waitUntil]], [[canSuspend]], [[execVM]], [[spawn]], [[sleep vs uiSleep]], [[Control Structures]]
{{Note
|user= CrashDome
|timestamp= 20061220205300
|text= Sleep suspends both SQF functions and SQF scripts. In functions, the calling script is still in suspension due to waiting for a return from the [[call]] command. The game engine will continue, however. See [[Function]] for more detail.
}}
}}


<dl class="command_description">
{{Note
|user= Kronzky
|timestamp= 20070212201600
|text= Sleep durations between .0005 and .02 will cause the same delay (roughly .02 seconds).<br>
Delays of .0005 and less have '''no''' effect (i.e, the sleep call will return immediately).
}}


<dt></dt>
{{Note
<dd class="notedate">Posted on December 20, 2006 - 19:53</dd>
|user= Sbsmac
<dt class="note">[[User:CrashDome|CrashDome]]</dt>
|timestamp= 20070213223200
<dd class="note">Sleep suspends both SQF functions and SQF scripts. In functions, the calling script is still in suspension due to waiting for a return from the [[call]] command. The game engine will continue, however. See [[Function]] for more detail.
|text= The comment above is a little misleading. The game engine appears to work by processing frames and then checking to see whether scripts are available to execute.
<dt><dt>
Sleep causes the script/function to be suspended until at least the specified time has elapsed.
<dd class="notedate">Posted on February 12, 2007 - 20:16</dd>
To wait for the next frame, or give other scripts a chance to run, use Sleep 0.001.  
<dt class="note">[[User:Kronzky|Kronzky]]</dt>
}}
<dd class="note">Sleep durations between .0005 and .02 will cause the same delay (roughly .02 seconds).<br>Delays of .0005 and less have '''no''' effect (ie, the sleep call will return immediately).


<dt class="note">[[User:Sbsmac|Sbsmac]]</dt>
{{Note
<dd class="note">The comment above is a little misleading. The game engine appears to work by processing frames and then checking to see whether scripts are available to execute.  Sleep causes the script/function to be suspended until at least the specified time has elapsed.  To wait for the next frame, or give other scripts a chance to run, use Sleep 0.001.
|user= Inkompetent
<dt><dt>
|timestamp= 20070616001300
<dd class="notedate">Posted on July 16, 2007 - 00:13</dd>
|text= For scripts called by the [[Arma 3: Event Handlers#Init|Init Event Handler]] the first sleep command will suspend the script at the briefing screen at the start of a mission. The script will continue after the briefing screen, when actually "in game".
<dt class="note">[[User:Inkompetent|Inkompetent]]</dt>
}}
<dd class="note">For scripts called by the [[Armed_Assault:_EventHandlers_List#Init|Init Event Handler]] the first sleep command will suspend the script at the briefing screen at the start of a mission. The script will continue after the briefing screen, when actually "in game".
<dt><dt>
<dd class="notedate">Posted on October 18, 2014 - 21:24 (UTC)</dd>
<dt class="note">[[User:AgentRevolution|AgentRevolution]]</dt>
<dd class="note">
For server scripts, if you are creating "while true" timers, it is best to use [[uiSleep]] instead, as the sleep from that command is not slowed down by simulation / server lag, so the timers will execute at intervals that are much closer to real time, even under heavy lag.
</dd>
 
</dl>

Latest revision as of 17:28, 5 April 2022

Logo A1 black.png1.00Logo A2.png1.00A2 OA Logo.png1.50tkoh logo small.png1.00Arma 3 logo black.png0.50
Hover & click on the images for description

Description

Description:
Suspends code execution for given time in seconds. The sleep precision is given by a framerate, the delay given is the minimal delay expected. Must be called inside of a context which is interruptible, i.e. a script executed by execVM or spawn.
ⓘ
  • this command will suspend the code for at least the given amount of time, and can be way more if the script scheduler is busy.
  • this command will suspend the script as the game gets paused in single player (and will resume with it). To avoid this, use uiSleep.
Groups:
Program Flow

Syntax

Syntax:
sleep delay
Parameters:
delay: Number - in seconds. Negative values will not be considered.
Return Value:
Nothing

Examples

Example 1:
0 spawn { sleep 5; hint "after (at least) 5 seconds..."; };
Example 2:
sleep 5 + random 10; // incorrect - will only sleep for 5 seconds, as it will be interpreted as (sleep 5) (+(random 10)) sleep (5 + random 10); // correct

Additional Information

See also:
uiSleep waitUntil canSuspend execVM spawn sleep vs uiSleep Control Structures

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
CrashDome - c
Posted on Dec 20, 2006 - 20:53 (UTC)
Sleep suspends both SQF functions and SQF scripts. In functions, the calling script is still in suspension due to waiting for a return from the call command. The game engine will continue, however. See Function for more detail.
Kronzky - c
Posted on Feb 12, 2007 - 20:16 (UTC)
Sleep durations between .0005 and .02 will cause the same delay (roughly .02 seconds).
Delays of .0005 and less have no effect (i.e, the sleep call will return immediately).
Sbsmac - c
Posted on Feb 13, 2007 - 22:32 (UTC)
The comment above is a little misleading. The game engine appears to work by processing frames and then checking to see whether scripts are available to execute. Sleep causes the script/function to be suspended until at least the specified time has elapsed. To wait for the next frame, or give other scripts a chance to run, use Sleep 0.001.
Inkompetent - c
Posted on Jun 16, 2007 - 00:13 (UTC)
For scripts called by the Init Event Handler the first sleep command will suspend the script at the briefing screen at the start of a mission. The script will continue after the briefing screen, when actually "in game".
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