Smoll/Expansion2/ExampleShootingInputComponent.cs

using Smoll;
using Raylib_cs;
using System.Numerics;
using Smoll.Ex1;
using Smoll.Ex3;

namespace Smoll.Ex2
{
    class ExampleShootingInputComponent : Component {
        Transform2DComponent? transform;
        ArrowComponent? arrow;

        public ExampleShootingInputComponent() {
        }

        public override void OnAttached()
        {
            base.OnAttached();
            transform = owner.GetComponent<Transform2DComponent>();
            arrow = owner.GetComponent<ArrowComponent>();
        }

        public override void Update(float deltaTimeSeconds)
        {
            transform ??= owner.GetComponent<Transform2DComponent>();
            if(transform == null) throw new Exception("Example Input used on immovable object");
            arrow ??= owner.GetComponent<ArrowComponent>();
            if(arrow == null) throw new Exception("Example Shooter used on arrowless object");
            if(Raylib.IsKeyPressed(KeyboardKey.Space)) {
                var shoot = new Entity(owner.layers.First());
                shoot.zOrder = -5;
                var details = arrow.OriginAndVector();
                var selfTransform = transform.AbsoluteTransform();
                shoot.Attach(new Transform2DComponent((float)details.Item1.Real, (float)details.Item1.Imaginary, selfTransform.angle, selfTransform.scale));
                shoot.Attach(new TimeToLiveComponent(4f));
                shoot.Attach(new SpriteComponent("Beam.png"));
                shoot.Attach(new InertiaComponent(1.0f, (float)details.Item2.Real, (float)details.Item2.Imaginary));
            }
        }
    }
}