SupaLidlGame/Extensions/AudioStreamPlayer2D.cs

using Godot;
using System;
using SupaLidlGame.Utils;

namespace SupaLidlGame.Extensions
{
    public static class AudioStreamPlayer2DExtensions
    {
        public static AudioStreamPlayer2D Clone(
            this AudioStreamPlayer2D audio)
        {
            var clone = audio.Duplicate() as AudioStreamPlayer2D;
            clone.Finished += () =>
            {
                clone.QueueFree();
            };
            return clone;
        }

        public static AudioStreamPlayer2D On(
            this AudioStreamPlayer2D audio,
            Node parent)
        {
            var clone = audio.Clone();
            parent.AddChild(clone);
            clone.GlobalPosition = audio.GlobalPosition;
            return clone;
        }

        public static AudioStreamPlayer2D OnWorld(
            this AudioStreamPlayer2D audio)
        {
            var world = audio.GetTree().Root.GetNode("World/TileMap");
            if (world is null)
            {
                throw new NullReferenceException("World does not exist");
            }
            var clone = audio.On(world);
            clone.GlobalPosition = audio.GlobalPosition;
            return clone;
        }

        public static AudioStreamPlayer2D At(
            this AudioStreamPlayer2D audio,
            Vector2 globalPosition)
        {
            var world = audio.GetTree().Root.GetNode("World/TileMap");
            if (world is null)
            {
                throw new NullReferenceException("World does not exist");
            }

            var parent = new Node2D();
            world.AddChild(parent);
            parent.GlobalPosition = globalPosition;

            var clone = audio.On(world);
            clone.Finished += () =>
            {
                parent.QueueFree();
            };
            return clone;
        }

        public static AudioStreamPlayer2D WithPitchDeviation(
            this AudioStreamPlayer2D audio,
            float deviation)
        {
            audio.PitchScale = (float)GD.Randfn(audio.PitchScale, deviation);
            return audio;
        }
    }
}