ReC98/th01/main/bullet/laser_s.hpp

static const int SHOOTOUT_LASER_COUNT = 10;

/// Q24.8 fixed-point format
/// ------------------------
/// This format matches the precision of master.lib's [SinTable8] and
// [CosTable8] lookup tables, and directly maps its values to the range of
// [-1.0, +1.0].

typedef int32_t laser_pixel_t;

class LaserPixel {
public:
	// Code generation will require direct access to [v], if performing
	// arithmetic with a local variable...
	laser_pixel_t v;
};
/// ------------------------

class CShootoutLaser {
public:
	LaserPixel origin_left;
	LaserPixel origin_y;
	LaserPixel ray_start_left;
	LaserPixel ray_start_y;

protected:
	// For internal iteration over each ray segment
	LaserPixel ray_i_left;
	LaserPixel ray_i_y;

public:
	pixel_t ray_length;
	pixel_t ray_moveout_speed;
	screen_x_t target_left;	// unused
	vram_y_t target_y;	// unused
	int unknown;	// unused
	int32_t unused_1;
	LaserPixel velocity_y;	// per frame, unused
	LaserPixel step_y;	// per ray pixel, [-1.0, +1.0]
	LaserPixel velocity_x;	// per frame, unused
	LaserPixel step_x;	// per ray pixel, [-1.0, +1.0]
	pixel_t ray_extend_speed;
	int16_t unused_2;
	bool16 alive;
	int age;

	// At this [age], [ray_extend_speed] stops being added to [ray_length],
	// and [ray_start_*] starts being moved by [ray_moveout_speed] instead.
	int moveout_at_age;

	unsigned char col;
	unsigned char width_cel;
	bool damaging;
	char id;	// unused

protected:
	enum { SL_RAY_UNPUT = false, SL_RAY_PUT = true } put_flag;
};

extern CShootoutLaser shootout_lasers[SHOOTOUT_LASER_COUNT];