cards/CardRocket.cs
using Sandbox;
using System.Threading.Tasks;

public class CardRocket : Card
{
	public override bool ShouldHandleEvent( EventType eventType )
	{
		return eventType == EventType.Mismatch && Manager.Instance.ChosenCards.Contains( this ) && !Manager.Instance.IsMismatchALockedMatch;
	}

	public override async Task HandleEventAsync( EventType eventType )
	{
		var card0 = Manager.Instance.ChosenCards[0];
		var card1 = Manager.Instance.ChosenCards[1];

		if(card0.CantBeMoved || card1.CantBeMoved)
		{
			return;
		}

		Manager.Instance.PushEventMessage( this, eventType );

		await Task.DelayRealtime( 200 );

		Manager.Instance.PlayCardSfxBetween( "rocket_move", card0, card1, volume: 0.7f, pitch: Game.Random.Float( 0.9f, 1.1f ) );

		await Task.DelayRealtime( 200 );

		card0.MoveToPos( card0.LocalPosition.WithZ( Game.Random.Float( 70f, 90f ) ), 0.3f, EasingType.SineOut );
		card1.MoveToPos( card1.LocalPosition.WithZ( Game.Random.Float( 70f, 90f ) ), 0.3f, EasingType.SineOut );

		await Task.DelayRealtime( 300 );

		card0.MoveToPos( card1.LocalPosition.WithZ( card0.LocalPosition.z ), 0.4f, EasingType.SineInOut );
		card1.MoveToPos( card0.LocalPosition.WithZ( card1.LocalPosition.z ), 0.4f, EasingType.SineInOut );

		await Task.DelayRealtime( 400 );

		card0.MoveToPos( card0.LocalPosition.WithZ( Globals.CARD_DEFAULT_HEIGHT + Globals.CARD_ADD_HEIGHT_REVEALED_OR_HOVERED ), 0.2f, EasingType.SineOut );
		card1.MoveToPos( card1.LocalPosition.WithZ( Globals.CARD_DEFAULT_HEIGHT + Globals.CARD_ADD_HEIGHT_REVEALED_OR_HOVERED ), 0.2f, EasingType.SineOut );

		await Task.DelayRealtime( 200 );

		await Manager.Instance.SwapCardPositions( card0, card1 );

		card0.IsMovementControlled = false;
		card1.IsMovementControlled = false;

		await Task.DelayRealtime( 100 );

		Manager.Instance.PopEventMessage();

		await Manager.Instance.EventHappened( EventType.AfterCardsMoved );
	}
}