package lnx;

import leenkx.trait.physics.PhysicsWorld;

class RayCastTrait extends iron.Trait {

    var q = new iron.math.Quat();

    public function new() {
        super();
        
        var mouse = iron.system.Input.getMouse();
        var keyboard = iron.system.Input.getKeyboard();

        notifyOnUpdate(function() {

            if (mouse.down()) {
                var physics = PhysicsWorld.active;

                // Start from cone location
                var from = object.transform.world.getLoc();

                // Cast ray in the direction cone points to
                var to = object.transform.look();

                // 1000 units long
                to.mult(1000);

                // End position
                to.add(from);
                
                var hit = physics.rayCast(from, to);
                var rb = (hit != null) ? hit.rb : null;
                var info = '';
                if( rb != null ) info += ' ${rb.object.name}';
                trace(info);
            }

            if (keyboard.down("left")) {
                q.fromEuler(0, 0, 0.1);
		        object.transform.rot.mult(q);
		        object.transform.buildMatrix();
            }

            if (keyboard.down("right")) {
                q.fromEuler(0, 0, -0.1);
		        object.transform.rot.mult(q);
		        object.transform.buildMatrix();
            }
        });
    }
}