using Godot;
using Newlon.Components;

public partial class FlashShaderController : Node
{
	[Export] public float flashTime = 0.5f;
	[Export]
	private ShaderMaterial shaderMaterial;
	private uint toggleStack = 0;
	private Tween flashTween;
	public void DamageFlash()
	{
		Flash();
	}
	public void Flash(float customFlashTime = 0)
	{
		if (flashTween != null)
			flashTween.Kill();
		var time = flashTime;
		if (customFlashTime > 0)
			time = customFlashTime;

		flashTween = CreateTween();
		flashTween.TweenMethod(Callable.From<float>(SetBlend), 1.0, 0.0, time);
	}
	public void Select()
	{
		toggleStack++;
		UpdateSelected();
	}
	public void Deselect()
	{
		toggleStack--;
		UpdateSelected();
	}
	private void SetBlend(float blend)
	{
		shaderMaterial.SetShaderParameter("blend", blend);
	}
	private void UpdateSelected()
	{
		if (toggleStack > 0)
		{
			shaderMaterial.SetShaderParameter("selected", true);
		}
		else
		{
			shaderMaterial.SetShaderParameter("selected", false);
		}
	}
}