using Godot;

public partial class Player : CharacterBody2D
{
	[Export] public const float Speed = 50.0f;

	[Signal]
	public delegate void KilledEventHandler();

	public bool Alive = true;

	public static Player Instance { get; private set; }
	
	protected AnimatedSprite2D Sprite;

	public override void _Ready()
	{
		Instance = this;

		Sprite = (AnimatedSprite2D)FindChild("AnimatedSprite2D");
	}

	public override void _PhysicsProcess(double delta)
	{
		if (!Alive)
			return;
		
		Vector2 velocity = Velocity;

		// Get the input direction and handle the movement/deceleration.
		// As good practice, you should replace UI actions with custom gameplay actions.
		Vector2 direction = Input.GetVector("character_left", "character_right", "character_up", "character_down");
		if (direction != Vector2.Zero)
		{
			velocity.X = direction.X * Speed;
			velocity.Y = direction.Y * Speed;

			var animationName = "sideways";
			if (velocity.Y > 0.001f)
				animationName = "down";
			else if (velocity.Y < 0.001f)
				animationName = "up";

			if (velocity.X != 0)
				animationName = "sideways";
			
			Sprite.FlipH = velocity.X < 0.001f && animationName == "sideways";
			Sprite.Play(animationName);
		}
		else
		{
			velocity.X = Mathf.MoveToward(Velocity.X, 0, Speed);
			velocity.Y = Mathf.MoveToward(Velocity.Y, 0, Speed);
			Sprite.Stop();
		}

		Velocity = velocity;
		MoveAndSlide();
	}

	public void Kill(Node2D killer)
	{
		if (!Alive)
			return;
		
		GD.Print($"Killed by {killer.Name}");
		Alive = false;
		EmitSignal(SignalName.Killed);

		DeathScreen.Instance.Killed(killer);
	}
}