remove "tick" runtime event

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3 posts

- stefano1234
- - Joined 3 Jul, 2017
  - 9 topics • 14 posts
- 1
- 17 Jul, 2019
- Quote
I tried it in many ways and it's still not removed

runtime.removeEventListener("tick",Tick);

runtime.removeEventListener("tick",() => Tick(runtime));

el3um4s
- Joined 9 Nov, 2015
- 29 topics • 264 posts
1

18 Jul, 2019
Quote

But why do you want to do this?

Have you tried deleting these lines of code?

runOnStartup(async runtime =>
{
	runtime.addEventListener("beforeprojectstart", () => OnBeforeProjectStart(runtime));
});

function OnBeforeProjectStart(runtime)
{

	runtime.addEventListener("tick", () => Tick(runtime));
}

function Tick(runtime)
{
}

Or these?

	runtime.addEventListener("tick", () => Tick(runtime));

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- Ashley Construct Team Founder
- Moderator
- - Joined 21 May, 2007
  - 633 topics • 26,576 posts
- 1
- 18 Jul, 2019
- Quote
I just tried it and it works for me.

You have to make sure you pass exactly the same function reference to both addEventListener and removeEventListener. If you do this:
```
runtime.addEventListener("tick", () => Tick(runtime));
```
then you haven't saved the function reference anywhere, so it's impossible to remove it. Instead you have to save the function reference to a variable like this:
```
const tickFunc = () => Tick(runtime);
runtime.addEventListener("tick", tickFunc);

// later on...

runtime.removeEventListener("tick", tickFunc);
```
That ensures you pass the same function reference to both methods. Note if you try to remove () => Tick(runtime) again, or just Tick, those are both different functions to the one you added the event with so it won't work.