TypeScript: Abort or cancel a scheduled function

Coding
3

schedule and scheduleRepeating return Dispose object which it meant for such use cases (docs).

For example for the second part of your question you can use something like that:

class PlatformNotificator {
    private disposables: Map<String, Disposable> = new Map()

    onCollisionEnter(collider: BaseItem): void {
        let disposable = Time.schedule(() => {
            Debug.log("Stop standing on me!");
        }, 5);
        this.disposables[collider.id] = disposable

    }

    onCollisionExit(collider: BaseItem): void {
        let disposable = this.disposables[collider.id]
        if (disposable) {
            disposable.dispose()
            this.disposables.delete(collider.id)
        }
    }
} 
let notificator = new PlatformNotificator()
timedPlatform.onCollisionEnter(notificator.onCollisionEnter);
timedPlatform.onCollisionExit(notificator.onCollisionExit);

Note, that I didn’t test it, but this should give you an idea.

For the first part I would recommend you to take a look at observer pattern. Using scheduleRepeating for checking state change is error prone, inefficient and not extensible.

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