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https://github.com/ppy/osu.git
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254 lines
8.5 KiB
C#
254 lines
8.5 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using System.Linq;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Framework.Graphics.Textures;
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using osu.Framework.Input;
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using osu.Framework.Input.Bindings;
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using osu.Framework.Input.Events;
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using osu.Framework.Utils;
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using osu.Game.Graphics;
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using osu.Game.Rulesets.Objects.Drawables;
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using osu.Game.Rulesets.Osu.Objects.Drawables;
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using osu.Game.Rulesets.Osu.UI;
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using osu.Game.Screens.Play;
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using osu.Game.Skinning;
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using osuTK;
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using osuTK.Graphics;
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namespace osu.Game.Rulesets.Osu.Skinning.Legacy
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{
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public partial class LegacyCursorParticles : CompositeDrawable, IKeyBindingHandler<OsuAction>
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{
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public bool Active => breakSpewer.Active.Value || kiaiSpewer.Active.Value;
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private LegacyCursorParticleSpewer breakSpewer = null!;
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private LegacyCursorParticleSpewer kiaiSpewer = null!;
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[Resolved(canBeNull: true)]
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private Player? player { get; set; }
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[Resolved(canBeNull: true)]
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private OsuPlayfield? playfield { get; set; }
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[Resolved(canBeNull: true)]
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private GameplayState? gameplayState { get; set; }
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[BackgroundDependencyLoader]
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private void load(ISkinSource skin)
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{
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var texture = skin.GetTexture("star2");
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var starBreakAdditive = skin.GetConfig<OsuSkinColour, Color4>(OsuSkinColour.StarBreakAdditive)?.Value ?? new Color4(255, 182, 193, 255);
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if (texture != null)
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{
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// stable "magic ratio". see OsuPlayfieldAdjustmentContainer for full explanation.
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texture.ScaleAdjust *= 1.6f;
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}
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InternalChildren = new[]
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{
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breakSpewer = new LegacyCursorParticleSpewer(texture, 20)
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{
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Anchor = Anchor.Centre,
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Origin = Anchor.Centre,
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Colour = starBreakAdditive,
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Direction = SpewDirection.None,
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},
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kiaiSpewer = new LegacyCursorParticleSpewer(texture, 60)
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{
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Anchor = Anchor.Centre,
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Origin = Anchor.Centre,
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Colour = starBreakAdditive,
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Direction = SpewDirection.None,
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},
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};
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if (player != null)
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((IBindable<bool>)breakSpewer.Active).BindTo(player.IsBreakTime);
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}
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protected override void Update()
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{
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if (playfield == null || gameplayState == null) return;
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DrawableHitObject? kiaiHitObject = null;
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// Check whether currently in a kiai section first. This is only done as an optimisation to avoid enumerating AliveObjects when not necessary.
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if (gameplayState.Beatmap.ControlPointInfo.EffectPointAt(Time.Current).KiaiMode)
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kiaiHitObject = playfield.HitObjectContainer.AliveObjects.FirstOrDefault(isTracking);
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kiaiSpewer.Active.Value = kiaiHitObject != null;
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}
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private bool isTracking(DrawableHitObject h)
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{
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if (!h.HitObject.Kiai)
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return false;
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switch (h)
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{
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case DrawableSlider slider:
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return slider.Tracking.Value;
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case DrawableSpinner spinner:
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return spinner.RotationTracker.Tracking;
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}
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return false;
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}
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public bool OnPressed(KeyBindingPressEvent<OsuAction> e)
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{
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handleInput(e.Action, true);
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return false;
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}
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public void OnReleased(KeyBindingReleaseEvent<OsuAction> e)
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{
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handleInput(e.Action, false);
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}
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private bool leftPressed;
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private bool rightPressed;
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private void handleInput(OsuAction action, bool pressed)
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{
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switch (action)
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{
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case OsuAction.LeftButton:
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leftPressed = pressed;
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break;
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case OsuAction.RightButton:
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rightPressed = pressed;
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break;
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}
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if (leftPressed && rightPressed)
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breakSpewer.Direction = SpewDirection.Omni;
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else if (leftPressed)
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breakSpewer.Direction = SpewDirection.Left;
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else if (rightPressed)
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breakSpewer.Direction = SpewDirection.Right;
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else
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breakSpewer.Direction = SpewDirection.None;
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}
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private partial class LegacyCursorParticleSpewer : ParticleSpewer, IRequireHighFrequencyMousePosition
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{
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private const int particle_duration_min = 300;
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private const int particle_duration_max = 1000;
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public SpewDirection Direction { get; set; }
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protected override bool CanSpawnParticles => base.CanSpawnParticles && cursorScreenPosition.HasValue;
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protected override float ParticleGravity => 240;
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public LegacyCursorParticleSpewer(Texture? texture, int perSecond)
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: base(texture, perSecond, particle_duration_max)
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{
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Active.BindValueChanged(_ => resetVelocityCalculation());
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}
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private Vector2? cursorScreenPosition;
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private Vector2 cursorVelocity;
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private const double max_velocity_frame_length = 15;
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private double velocityFrameLength;
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private Vector2 totalPosDifference;
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public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => true;
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protected override bool OnMouseMove(MouseMoveEvent e)
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{
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if (cursorScreenPosition == null)
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{
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cursorScreenPosition = e.ScreenSpaceMousePosition;
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return base.OnMouseMove(e);
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}
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// calculate cursor velocity.
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totalPosDifference += e.ScreenSpaceMousePosition - cursorScreenPosition.Value;
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cursorScreenPosition = e.ScreenSpaceMousePosition;
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velocityFrameLength += Math.Abs(Clock.ElapsedFrameTime);
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if (velocityFrameLength > max_velocity_frame_length)
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{
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cursorVelocity = totalPosDifference / (float)velocityFrameLength;
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totalPosDifference = Vector2.Zero;
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velocityFrameLength = 0;
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}
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return base.OnMouseMove(e);
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}
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private void resetVelocityCalculation()
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{
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cursorScreenPosition = null;
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totalPosDifference = Vector2.Zero;
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velocityFrameLength = 0;
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}
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protected override FallingParticle CreateParticle() =>
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new FallingParticle
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{
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StartPosition = ToLocalSpace(cursorScreenPosition ?? Vector2.Zero),
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Duration = RNG.NextSingle(particle_duration_min, particle_duration_max),
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StartAngle = (float)(RNG.NextDouble() * 4 - 2),
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EndAngle = RNG.NextSingle(-2f, 2f),
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EndScale = RNG.NextSingle(2f),
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Velocity = getVelocity(),
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};
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private Vector2 getVelocity()
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{
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Vector2 velocity = Vector2.Zero;
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switch (Direction)
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{
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case SpewDirection.Left:
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velocity = new Vector2(
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RNG.NextSingle(-460f, 0),
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RNG.NextSingle(-40f, 40f)
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);
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break;
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case SpewDirection.Right:
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velocity = new Vector2(
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RNG.NextSingle(0, 460f),
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RNG.NextSingle(-40f, 40f)
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);
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break;
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case SpewDirection.Omni:
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velocity = new Vector2(
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RNG.NextSingle(-460f, 460f),
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RNG.NextSingle(-160f, 160f)
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);
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break;
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}
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velocity += cursorVelocity * 40;
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return velocity;
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}
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}
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private enum SpewDirection
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{
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None,
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Left,
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Right,
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Omni,
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}
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}
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}
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