/*******************
 graphics.h
*******************/

#define ORDERING_TABLE_LENGTH (12)
#define MAX_NO_PACKETS  (24800)    //248000

#define TRUE (1)
#define FALSE  (0)

#define SCREEN_WIDTH  (320)
#define SCREEN_HEIGHT (240)

int CurrentBuffer;
#define RenderPrepare()\
		CurrentBuffer=GsGetActiveBuff(); \
		GsSetWorkBase((PACKET*)Packet_Memory[CurrentBuffer]);\
		GsClearOt(0, 0, &OTable_Header[CurrentBuffer]);

#define 	RenderFinish()\
		DrawSync(0); \
		VSync(0); \
		GsSwapDispBuff(); \
		GsSortClear(0, 0, 0,&OTable_Header[CurrentBuffer]); \
		GsDrawOt(&OTable_Header[CurrentBuffer]);

// We need two Ordering Table Headers, one for each buffer
GsOT OTable_Header[2];
// And we need Two Ordering Tables, one for each buffer
GsOT_TAG        OTable_Array[2][1<<ORDERING_TABLE_LENGTH];
//We also allocate memory used for depth sorting, a block for each buffer
PACKET          Packet_Memory[2][MAX_NO_PACKETS];

// This is an array of structures for the lights
GsF_LIGHT       LightSource[3];

// Define a structure to hold a 3D object that will be rendered on screen
typedef struct
{
	 GsDOBJ2         Object_Handler;
	 GsCOORDINATE2   Object_Coord;
}ObjectStruct;

// Define structure to hold 3D animated object.
typedef struct
{
	GsCOORDINATE2   Object_Coord;   // object controlling coords.

	u_long * 	TmdP;		// Address of top TMD.
	u_long *	*TodP;		// Address of TOD.

  	u_long *	TodPtmp;	// Current TOD pointer.
	int		currentTod;     // Current TOD number.
	int		frameNo;	// Current Frame Number.
 	int		oldFrameNo;	// Last Frame Number.

	int		*NumFrame;	// Number of frames in tod.
	int 		*StartFrameNo;	// Starting frame number.

	int 		MaxObjects;	// Maximum objects in TMD
	GsDOBJ2		*obj_area;      // DOBJ area for object table v.
	GsCOORDINATE2   *obj_coord;     // local coordinate area.
	GsCOORD2PARAM   *obj_cparam;    // RST parameters for coordinate.
	TodOBJTABLE	objs;		// object table.

	int 		*ID_list;	// list of object ids.

}LinkObjectStruct;


/************* FUNCTION PROTOTYPES *******************/
void InitialiseModel(ObjectStruct *thePlayer, int nX, int nY, int nZ,
	unsigned long *lModelAddress);
void DrawObject(ObjectStruct *thePlayer);

void initTod(LinkObjectStruct *theObject,int todnum,int *IDlist,u_long * AnimAddress);
void DrawObjectLink(TodOBJTABLE ObjTab);
void InitialiseModelLink(LinkObjectStruct *theObject,int Max,int Anims,
			int nX,int nY,int nZ,unsigned long *lModelAddress);

void ResetAnim(LinkObjectStruct *theObject,int todnum);
u_long NextFrame(LinkObjectStruct *theObject,u_long loop);
void drawTod(LinkObjectStruct *theObject,int todnum);

void SetPosition(LinkObjectStruct *theObject);


void InitialiseALight(GsF_LIGHT *flLight, int nLight, int nX, int nY, int nZ,
		int nRed, int nGreen, int nBlue);
void InitialiseLights();
void InitialiseView(GsRVIEW2 *view, int nProjDist, int nRZ,
						  int nVPX, int nVPY, int nVPZ,
						  int nVRX, int nVRY, int nVRZ);
void Initialise3DGraphics();
void RotateModel(GsCOORDINATE2 *  Object_Coord, int nRX, int nRY, int nRZ);
void RotateModelVector (GsCOORDINATE2 *Object_Coord,SVECTOR *rotateVector, int nRX, int nRY, int nRZ );
void MoveModel (GsCOORDINATE2 *Object_Coord, int nX, int nY, int nZ);
void RotateModelMatrix (GsCOORDINATE2 *Object_Coord, int nRX, int nRY, int nRZ);
long NormalScale(long x,long y,long z);
void AdjustCoordinate2(GsCOORDINATE2 *coord);

/*****************************************************/