//	File	: fwDirect.h
//	Author	: John Wojcik ( QuietBloke )
//	Created	: August 2000
//	Desc	: 2D Game Framework Director manager. This manager 
//		is the top level manager. It initialises the display
//		the begin with. It then co-oridnates the various other
//		managers in order to refresh the display.
//
//	History	:
// Date     Author          Description
// -------- --------------- ----------------------------------------
// 01/10/00 J.Wojcik	Added call to allow the default background colour to be set ( r,g,b values )
// 12/11/00 J.Wojcik	Bug fixed when reducing lifespans where first actor was not updated.

#include <stdio.h>
#include <libps.h>
// #include "fwactor.h"
// #include "fwdirect.h"
#include "fw.h"

#define OT_LENGTH	1

GsOT Wot[2];
GsOT_TAG Wtags [2][1<<OT_LENGTH];

PACKET PacketArea [2][1000 * 50];

int side;
int hsync;

int bgRed;
int bgGreen;
int bgBlue;


// This function initialises the display. 
// Currently this is hard coded to set the mode the PAL
// and the display to be 320x255 pixels.
//
/*
void fwDirectInit ( void )
{
	SetVideoMode ( MODE_PAL );

	GsInitGraph ( PIXEL_SCREEN_WIDTH, PIXEL_SCREEN_HEIGHT, GsNONINTER | GsOFSGPU, 0, 0 );
	GsDefDispBuff ( 0,0,0,PIXEL_SCREEN_HEIGHT );

	GsDISPENV.screen.x = 1;
	GsDISPENV.screen.y = 18;
	GsDISPENV.screen.w = 255;
	GsDISPENV.screen.h = 255;

	Wot[0].length = OT_LENGTH;
	Wot[1].length = OT_LENGTH;
	Wot[0].org = Wtags[0];
	Wot[1].org = Wtags[1];

	GsClearOt ( 0,0, &Wot[0] );
	GsClearOt ( 0,0,&Wot[1]);

	side = GsGetActiveBuff ();
	GsSetWorkBase ( (PACKET*) PacketArea[side]);

	// Gotta initialise the pad manager too
	fwPadInit ();
}
*/
// Init screen in 640 * 512 interlaced mode
void fwDirectInit ( void )
{
	SetVideoMode ( MODE_PAL );

	if ( PIXEL_SCREEN_HEIGHT > 255 )
	{
		// This mode MUST be in interlaced.mode
		GsInitGraph ( PIXEL_SCREEN_WIDTH, PIXEL_SCREEN_HEIGHT, GsINTER | GsOFSGPU, 0, 0 );
		GsDefDispBuff ( 0,0,0,0 );
	}
	else
	{
		GsInitGraph ( PIXEL_SCREEN_WIDTH, PIXEL_SCREEN_HEIGHT, GsNONINTER | GsOFSGPU, 0, 0 );
		GsDefDispBuff ( 0,0,0,PIXEL_SCREEN_HEIGHT );
	}

	GsDISPENV.screen.x = 1;
	GsDISPENV.screen.y = 18;
	GsDISPENV.screen.w = 255;
	GsDISPENV.screen.h = 255;

	Wot[0].length = OT_LENGTH;
	Wot[1].length = OT_LENGTH;
	Wot[0].org = Wtags[0];
	Wot[1].org = Wtags[1];

	GsClearOt ( 0,0, &Wot[0] );
	GsClearOt ( 0,0,&Wot[1]);

	side = GsGetActiveBuff ();
	GsSetWorkBase ( (PACKET*) PacketArea[side]);

	// Gotta initialise the pad manager too
	fwPadInit ();
}

void fwDirectSetBackGround ( int redValue, int greenValue, int blueValue )
{
	bgRed = redValue;
	bgGreen = greenValue;
	bgBlue = blueValue;
}

// Given a actual sprite this function simply adds it to the 
// World Ordering table 
//
void fwDirectWrite ( GsSPRITE *sprite )
{
//	GsSortFastSprite ( sprite, &Wot[side],0 );
	GsSortSprite ( sprite, &Wot[side],0 );
}  

// This function actual refreshes the display
// The first thing to do is update the animations.
// Next we cycle through all the actors currently
// defined as being On Stage. It then passes the actual
// low level sprite on to be added to the World Ordering table
// Finally the low level libraries are called to syncronize with 
// the display, swap display buffers and begin processing
// this new World ordering table.
//
void fwDirectRefresh ( void )
{
	int 	CurrentActor;
//	int	ActorID;

	// Lets update all our animations first
	fwAnimate ( );

	// Cycle through all the Actors On stage
	// and write them to the Ordering table
	CurrentActor = fwActorFirstOnStage ();

	while ( CurrentActor != -1 )
	{
		fwDirectWrite ( fwActorGet(CurrentActor) );
		fwActorReduceLifeSpan ( CurrentActor );
		CurrentActor = fwActorNextOnStage ( CurrentActor );
	}

	if ( PIXEL_SCREEN_HEIGHT > 255 )
	{
		// Slightly different if runnning in interlaced mode
		hsync = VSync (0);
		ResetGraph(1);
	}
	else
	{
		DrawSync(0);
		hsync = VSync (0);
	}

	GsSwapDispBuff();

	GsSortClear ( bgRed, bgGreen , bgBlue, &Wot[side] );
	GsDrawOt (&Wot[side] );

	side = GsGetActiveBuff ();
	GsSetWorkBase ( ( PACKET*) PacketArea[side] );
	GsClearOt ( 0, 0 , &Wot[side] );
}

int fwDirecthSync (void)
{
	return ( hsync );
}

int fwDirectScreenWidth(void)
{
	return ( PIXEL_SCREEN_WIDTH );
}

int fwDirectScreenHeight(void)
{
	return ( PIXEL_SCREEN_HEIGHT );
}