#include <vector>
#include <cstdint>
#include <QObject>

class Pendulum;
class QPainter;
class QTimer;

class Simulation : public QObject {
public:
	explicit Simulation();

	double size = 50;

	double gravity;
	double timescale;
	int substeps;

	int updateInterval = 17;

	bool isPlaying = false;

	std::vector<Pendulum *> pendula;
	void clearPendula();

	QTimer * timer;

	void draw(QPainter*, int) const;
private slots:
	void update();
};