diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorStarParticles.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorStarParticles.cs index f10d9a0fa9..52d4eedf42 100644 --- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorStarParticles.cs +++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorStarParticles.cs @@ -131,6 +131,44 @@ namespace osu.Game.Rulesets.Osu.Skinning.Legacy public StarParticleSpewer(Texture texture, int perSecond) : base(texture, perSecond, particle_lifetime_max) { + Active.BindValueChanged(_ => resetVelocityCalculation()); + } + + private Vector2 screenPosition => ToScreenSpace(OriginPosition); + + private Vector2 screenVelocity; + + private const double velocity_calculation_delay = 15; + private double lastVelocityCalculation; + private Vector2 positionDifference; + private Vector2? lastPosition; + + protected override void Update() + { + base.Update(); + + if (lastPosition != null) + { + positionDifference += (screenPosition - lastPosition.Value); + lastVelocityCalculation += Clock.ElapsedFrameTime; + } + + lastPosition = screenPosition; + + if (lastVelocityCalculation > velocity_calculation_delay) + { + screenVelocity = positionDifference / (float)lastVelocityCalculation; + + positionDifference = Vector2.Zero; + lastVelocityCalculation = 0; + } + } + + private void resetVelocityCalculation() + { + positionDifference = Vector2.Zero; + lastVelocityCalculation = 0; + lastPosition = null; } protected override FallingParticle SpawnParticle() @@ -170,6 +208,8 @@ namespace osu.Game.Rulesets.Osu.Skinning.Legacy break; } + p.Velocity += screenVelocity * 50; + return p; } }