// Set to `true` to clear all on-screen bullets, giving out a semi-exponential
// bonus for all bullets that were alive on the first frame of activity.
// Lasts for BULLET_ZAP_FRAMES and resets to `false` afterwards.
extern union {
	bool active;
	unsigned char frames; // doubles as the animation timer
} bullet_zap;

static const int BULLET_ZAP_FRAMES_PER_CEL = 4;

#ifdef BULLET_ZAP_CELS
	// ZUN quirk: Effectively 1 in TH05, see bullets_update() for the cause.
	static const int BULLET_ZAP_FRAMES = (
		BULLET_ZAP_CELS * BULLET_ZAP_FRAMES_PER_CEL
	);
#endif

// # of frames left during which all on-screen bullets should decay.
// Gives a constant point bonus for every bullet decayed during that time.
extern unsigned char bullet_clear_time;

#define bullets_clear() { \
	if(bullet_clear_time < 20) { \
		bullet_clear_time = 20; \
	} \
}