88 lines
2.8 KiB
C#
88 lines
2.8 KiB
C#
using Content.Shared.Throwing;
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using Robust.Client.Animations;
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using Robust.Client.GameObjects;
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using Robust.Shared.Animations;
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namespace Content.Client.Throwing;
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/// <summary>
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/// Handles animating thrown items.
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/// </summary>
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public sealed class ThrownItemVisualizerSystem : EntitySystem
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{
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[Dependency] private readonly AnimationPlayerSystem _anim = default!;
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private const string AnimationKey = "thrown-item";
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public override void Initialize()
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{
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base.Initialize();
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SubscribeLocalEvent<ThrownItemComponent, AfterAutoHandleStateEvent>(OnAutoHandleState);
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SubscribeLocalEvent<ThrownItemComponent, ComponentShutdown>(OnShutdown);
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}
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private void OnAutoHandleState(EntityUid uid, ThrownItemComponent component, ref AfterAutoHandleStateEvent args)
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{
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if (!TryComp<SpriteComponent>(uid, out var sprite))
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return;
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var animationPlayer = EnsureComp<AnimationPlayerComponent>(uid);
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if (_anim.HasRunningAnimation(uid, animationPlayer, AnimationKey))
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return;
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var anim = GetAnimation((uid, component, sprite));
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if (anim == null)
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return;
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component.OriginalScale = sprite.Scale;
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_anim.Play((uid, animationPlayer), anim, AnimationKey);
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}
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private void OnShutdown(EntityUid uid, ThrownItemComponent component, ComponentShutdown args)
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{
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if (!_anim.HasRunningAnimation(uid, AnimationKey))
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return;
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if (TryComp<SpriteComponent>(uid, out var sprite) && component.OriginalScale != null)
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sprite.Scale = component.OriginalScale.Value;
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_anim.Stop(uid, AnimationKey);
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}
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private static Animation? GetAnimation(Entity<ThrownItemComponent, SpriteComponent> ent)
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{
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if (ent.Comp1.LandTime - ent.Comp1.ThrownTime is not { } length)
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return null;
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if (length <= TimeSpan.Zero)
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return null;
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length += TimeSpan.FromSeconds(ThrowingSystem.FlyTime);
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var scale = ent.Comp2.Scale;
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var lenFloat = (float) length.TotalSeconds;
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// TODO use like actual easings here
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return new Animation
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{
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Length = length,
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AnimationTracks =
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{
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new AnimationTrackComponentProperty
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{
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ComponentType = typeof(SpriteComponent),
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Property = nameof(SpriteComponent.Scale),
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KeyFrames =
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{
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new AnimationTrackProperty.KeyFrame(scale, 0.0f),
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new AnimationTrackProperty.KeyFrame(scale * 1.4f, lenFloat * 0.25f),
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new AnimationTrackProperty.KeyFrame(scale, lenFloat * 0.75f)
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},
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InterpolationMode = AnimationInterpolationMode.Linear
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}
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}
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};
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}
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}
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