using HC3;
using System;

public sealed class BoatSwingRide : BasicRide
{
	[Property] public GameObject RideBoat { get; set; }

	private float maxSwingAngle = 45f;
	private float swingFrequency = 0.5f;
	private float elapsed = 0f;
	private float rideEndEaseTime = 3.0f;

	protected override void DrawGizmos()
	{
		base.DrawGizmos();

		if ( RideBoat == null )
			return;

		Gizmo.Draw.IgnoreDepth = true;
		Gizmo.Draw.LineThickness = 4;
		Gizmo.Draw.Color = Color.Orange;
		Gizmo.Draw.LineSphere( RideBoat.WorldPosition, 10f );
	}

	protected override void OnUpdate()
	{
		base.OnUpdate();

		if ( !RideStarted || RideBoat == null )
			return;

		elapsed += Time.Delta;

		float progress = elapsed / RideLength;

		float strength = 1.0f;
		if ( progress > 1.0f - (rideEndEaseTime / RideLength) )
		{
			float endProgress = (progress - (1.0f - (rideEndEaseTime / RideLength))) / (rideEndEaseTime / RideLength);
			strength = MathX.Lerp( 1.0f, 0.0f, endProgress );
		}
		else
		{
			strength = MathF.Min( 1.0f, progress );
		}

		float angle = MathF.Sin( Time.Now * swingFrequency * MathF.Tau ) * maxSwingAngle * strength;

		RideBoat.LocalRotation = Rotation.FromAxis( Vector3.Right, angle );
	}

	[Button( "Start Ride" )]
	protected override void OnRideStarted()
	{
		base.OnRideStarted();

		elapsed = 0f;

		if ( RideBoat != null )
		{
			RideBoat.LocalRotation = Rotation.Identity;
		}
	}
}