osu-lazer/osu.Game/Storyboards/Drawables/StoryboardSprite.cs

// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE

using OpenTK;
using osu.Framework.Allocation;
using osu.Framework.Graphics.Sprites;
using osu.Framework.Graphics.Textures;
using osu.Framework.IO.File;
using System.Linq;

namespace osu.Game.Storyboards.Drawables
{
    public class StoryboardSprite : Sprite, IFlippable
    {
        public SpriteDefinition Definition { get; private set; }

        protected override bool ShouldBeAlive => Definition.HasCommands && base.ShouldBeAlive;
        public override bool RemoveWhenNotAlive => !Definition.HasCommands || base.RemoveWhenNotAlive;

        public bool FlipH { get; set; }
        public bool FlipV { get; set; }
        protected override Vector2 DrawScale => new Vector2(FlipH ? -base.DrawScale.X : base.DrawScale.X, FlipV ? -base.DrawScale.Y : base.DrawScale.Y);

        public StoryboardSprite(SpriteDefinition definition)
        {
            Definition = definition;
            Origin = definition.Origin;
            Position = definition.InitialPosition;

            if (definition.HasCommands)
            {
                LifetimeStart = definition.StartTime;
                LifetimeEnd = definition.EndTime;
            }
        }

        [BackgroundDependencyLoader]
        private void load(OsuGameBase game, TextureStore textureStore)
        {
            var spritePath = Definition.Path;
            var path = game.Beatmap.Value.BeatmapSetInfo.Files.FirstOrDefault(f => f.Filename == spritePath)?.FileInfo.StoragePath;
            if (path == null)
                return;

            Texture = textureStore.Get(path);
            Definition.ApplyTransforms(this);
        }
    }
}