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21 lines
538 B
21 lines
538 B
2 years ago
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#include "bullet.h"
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#include <QTimer>
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#include <qmath.h>
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Bullet::Bullet(QGraphicsItem *parent) {
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// set graphics
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setPixmap(QPixmap(":/images/missile.png"));
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QTimer *move_timer = new QTimer(this);
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connect(move_timer, SIGNAL(timeout()), this, SLOT(move()));
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move_timer->start(50);
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}
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void Bullet::move() {
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int STEP_SIZE = 30;
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int theta = rotation(); // degrees
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double dy = STEP_SIZE * qSin(qDegreesToRadians(theta));
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double dx = STEP_SIZE * qCos(qDegreesToRadians(theta));
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setPos(x()+dx, y()+dy);
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}
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