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/*  Project Starshatter 4.5
	Destroyer Studios LLC
	Copyright © 1997-2004. All Rights Reserved.

	SUBSYSTEM:    Stars.exe
	FILE:         Thruster.h
	AUTHOR:       John DiCamillo


	OVERVIEW
	========
	Conventional Thruster (system) class
*/

#ifndef Thruster_h
#define Thruster_h

#include "Types.h"
#include "System.h"
#include "Geometry.h"

// +--------------------------------------------------------------------+

class Ship;

// +--------------------------------------------------------------------+

struct ThrusterPort {
	static const char* TYPENAME() { return "ThrusterPort"; }

	ThrusterPort(int t, const Point& l, DWORD f, float s);
	~ThrusterPort();

	int         type;
	DWORD       fire;
	float       burn;
	float       scale;
	Point       loc;
	Graphic*    flare;
	Graphic*    trail;
};

// +--------------------------------------------------------------------+

class Thruster : public System
{
public:
	static const char* TYPENAME() { return "Thruster"; }

	enum Constants {
		LEFT,  RIGHT, FORE,    AFT,     TOP,    BOTTOM,
		YAW_L, YAW_R, PITCH_D, PITCH_U, ROLL_L, ROLL_R
	};

	Thruster(int dtype, double thrust, float flare_scale=0);
	Thruster(const Thruster& rhs);
	virtual ~Thruster();

	static void       Initialize();
	static void       Close();

	virtual void      ExecFrame(double seconds);
	virtual void      ExecTrans(double x, double y, double z);
	virtual void      SetShip(Ship* s);

	virtual double    TransXLimit();
	virtual double    TransYLimit();
	virtual double    TransZLimit();

	virtual void      AddPort(int type, const Point& loc, DWORD fire, float flare_scale=0);
	virtual void      CreatePort(int type, const Point& loc, DWORD fire, float flare_scale);

	int               NumThrusters()       const;
	Graphic*          Flare(int engine)    const;
	Graphic*          Trail(int engine)    const;
	virtual void      Orient(const Physical* rep);
	virtual double    GetRequest(double seconds) const;

protected:
	void              IncBurn(int inc, int dec);
	void              DecBurn(int a,   int b);

	Ship*             ship;
	float             thrust;
	float             scale;
	float             burn[12];

	float             avail_x,   avail_y,    avail_z;
	float             trans_x,   trans_y,    trans_z;
	float             roll_rate, pitch_rate, yaw_rate;
	float             roll_drag, pitch_drag, yaw_drag;

	List<ThrusterPort>   ports;
};

#endif Thruster_h