using Godot;
using System;

namespace SupaLidlGame.Utils;

public partial class PlayerCamera : Camera2D
{
    protected float _intensity;

    protected double _timeLeft;

    public override void _Ready()
    {

    }

    public override void _Process(double delta)
    {
        if (_timeLeft > 0)
        {
            _timeLeft -= delta;
            Offset = RandomOffset(_intensity);
        }
        else
        {
            Offset = Vector2.Zero;
        }

        if (_intensity > 0)
        {
            _intensity = Mathf.MoveToward(_intensity, 0.0f, (float)delta);
        }
    }

    public void Shake(float intensity, double time)
    {
        _intensity = Mathf.Max(_intensity, intensity);
        _timeLeft = Math.Max(_timeLeft, time);
    }

    private Vector2 RandomOffset(float intensity)
    {
        Vector2 ret = Vector2.Zero;
        var rng = new RandomNumberGenerator();
        ret.X = (rng.Randf() - 0.5f) * intensity;
        ret.Y = (rng.Randf() - 0.5f) * intensity;
        return ret;
    }
}