cirnogodot/Scripts/Components/Actors/PlayerAnimationProvider.cs

using System.Threading.Tasks;
using Cirno.Scripts;
using Cirno.Scripts.Components;
using Godot;
using GTweens.Builders;
using GTweens.Tweens;
using GTweensGodot.Extensions;

public partial class PlayerAnimationProvider : Node2D
{
    [Export]
    public AnimatedSprite2D _animatedSprite {get; private set;}

    [Export] private PackedScene _deathParticles;
    [Export] private GpuParticles2D _shieldParticles;
    
    [ExportCategory("Animation Names")]
    [Export]
    public string WalkRightAnimationName {get; private set;} = "walk_right";

    [Export]
    public string WalkLeftAnimationName {get; private set;} = "walk_left";
    [Export]
    public string WalkDownAnimationName {get; private set;} = "walk_down";
    [Export]
    public string WalkUpAnimationName {get; private set;} = "walk_up";

    [ExportCategory("Shaders")]
    [Export] public ShaderMaterial BlinkMaterial {get; private set;}

    [Export] public StringName BlinkShaderPropertyName { get; private set; } = new StringName("blink_intensity");

    private GTween _blinkTween;
    
    public void SetAnimation(Vector2 velocity)
	{
		if (velocity.X == 0 && velocity.Y == 0)
		{
			_animatedSprite.SpeedScale = 0;
		}
		else
		{
			_animatedSprite.SpeedScale = 1;
		}

		if (velocity.X > 0)
		{
			_animatedSprite.Play(WalkRightAnimationName);
		}
		else if (velocity.X < 0)
		{
			_animatedSprite.Play(WalkLeftAnimationName);
		}
		else if (velocity.Y > 0)
		{
			_animatedSprite.Play(WalkDownAnimationName);
		}
		else if (velocity.Y < 0)
		{
			_animatedSprite.Play(WalkUpAnimationName);
		}
	}

	public void Blink()
	{
		if (BlinkMaterial == null) return;
		_animatedSprite.Material = BlinkMaterial;

		var material = ((ShaderMaterial)_animatedSprite.Material);

		_blinkTween?.Kill();
		
		_blinkTween = GTweenSequenceBuilder.New()
			.Append(material.TweenPropertyFloat(BlinkShaderPropertyName, 1f, 0f))
			.Append(material.TweenPropertyFloat(BlinkShaderPropertyName, 0f, 0.5f))
			.Build();

		_blinkTween.Play();
	}
	
	private void SetShaderTeleportProgress(float value)
	{
		((ShaderMaterial)_animatedSprite.Material).SetShaderParameter("teleport_progress", value);
	}

	private void SetShaderScanlineDensity(float value)
	{
		((ShaderMaterial)_animatedSprite.Material).SetShaderParameter("scanline_density", value);
	}

	private void SetShaderBlinkIntensity(float newValue)
	{
		((ShaderMaterial)_animatedSprite.Material).SetShaderParameter("blink_intensity", newValue);
	}

	public void PlayDeathAnimation()
	{
		this.CreateSibling<AutodeleteParticle>(_deathParticles, this.GlobalPosition);
		_animatedSprite.Visible = false;
	}

	public void PlayShieldAnimation()
	{
		_shieldParticles.Emitting = true;
	}
}