#include "bullet.h"
#include <QTimer>
#include <qmath.h>

Bullet::Bullet(QGraphicsItem *parent) {
   // set graphics
    setPixmap(QPixmap(":/images/missile.png"));
    QTimer *move_timer = new QTimer(this);
    connect(move_timer, SIGNAL(timeout()), this, SLOT(move()));
    move_timer->start(50);
}

void Bullet::move() {
    int STEP_SIZE = 30;
    int theta = rotation(); // degrees
    double dy = STEP_SIZE * qSin(qDegreesToRadians(theta));
    double dx = STEP_SIZE * qCos(qDegreesToRadians(theta));

    setPos(x()+dx, y()+dy);
}