Engine.GetSimRate/SetSimRate from JS script

[CulturedCait]

Hi guys!

I'm working on a new script and I was wondering if there is a way to execute Engine.SetSimRate / Engine.GetSimRate from JS trigger script? It works if executed directly from the console, but using these functions inside JS produces following error:

ERROR: Error in timer on entity 1, IID103, function DoAction: TypeError: Engine.SetSimRate is not a function

This is my test trigger:

Trigger.prototype.TestDelay = () => {
	Engine.SetSimRate(20);
}

const trg = Engine.QueryInterface(SYSTEM_ENTITY, IID_Trigger);
trg.DoAfterDelay(5000,"TestDelay", {enabled: true});

I'm on release-a27.1 6a576.

Do you have an idea how to change simulation speed from within javascript? Is it even possible using trigger mechanics?

Thank you.

[Vantha]

That's not possible, unfortunately. Essentially, the engine creates different JS script interfaces for different purposes - one for the GUI (scripts in gui/), one for the simulation (scripts in simulation/ and trigger scripts in maps/scenarios/) and one for map generation (scripts in maps/random/). And those Engine functions are always registered in specific contexts. Engine.QueryInterface, for example, is obviously only available in simulation context, since that's were simulation components and interfaces are. Similarly, Engine.SetSimRate and Engine.GetSimRate are only registered in the GUI scripting context, meaning you can only call them from GUI scripts.

What exactly are you trying to achieve? There are some possible workarounds because the engine allows you to communicate between contexts and modifying the engine to register SetSimRate and GetSimRate in simulation scripting context too is quite straightforward actually.