/*************************/
/*** Shade Layer Class ***/
/*************************/

#include 	"system\global.h"
#include	<DStructs.h>
#include 	"utils\utils.h"
#include 	"gfx\prim.h"

#include	"gfx\sprbank.h"

#include	"LayerTile.h"
#include	"LayerBack.h"

#include	"Game\game.h"

sBackRGBTable	CLayerBack::BackRGBTable[]=
{
	{255,  0,  0,0},
	{255,255,  0,0},
	{  0,255,  0,0},
	{  0,255,255,0},
	{  0,  0,255,0},
	{255,  0,255,0},
	{255,255,255,0},
	{128,  0,  0,0},
	{128,128,  0,0},
	{  0,128,  0,0},
	{  0,128,128,0},
	{  0,  0,128,0},
	{128,  0,128,0},
	{128,128,128,0},
};

#define	BackRGBTableSize	sizeof(BackRGBTable)/sizeof(sBackRGBTable)

/*****************************************************************************/
/*****************************************************************************/
/*****************************************************************************/
CLayerBack::CLayerBack(sLvlHdr *LvlHdr,sLayerHdr *Hdr) : CLayerTile(LvlHdr,Hdr)
{
		Data=(sLayerShadeHdr*)MakePtr(Hdr,sizeof(sLayerHdr));

		ASSERT(Data->Count<=LAYER_SHADE_RGB_MAX);
		BandCount=Data->Count-1;
// Setup back gfx
		
		for (int i=0; i<SPRITE_MAX; i++)
		{
			int	Type=i&1;
			POLY_GT4	*Gt4=&SpriteList[i].Poly;
			
			SpriteList[i].Type=Type;
			setPolyGT4(Gt4);
			Gt4->tpage=Data->BackGfx[Type].TPage;
			Gt4->clut=Data->BackGfx[Type].Clut;
			setUVWH(Gt4,Data->BackGfx[Type].U,Data->BackGfx[Type].V,Data->BackGfx[Type].W,Data->BackGfx[Type].H);
			SpriteList[i].W=Data->BackGfx[Type].W;
			SpriteList[i].H=Data->BackGfx[Type].H;
			setSemiTrans(Gt4,1);
			Gt4->u1--; 	Gt4->u3--;
			Gt4->v2--; 	Gt4->v3--;

// Init all
			setRGB0(Gt4,255,255,255);
			setRGB1(Gt4,255,255,255);
			setRGB2(Gt4,255,255,255);
			setRGB3(Gt4,255,255,255);
			SpriteList[i].Angle=0;
			SpriteList[i].AngleInc=0;
			SpriteList[i].PosInc.vx=0;
			SpriteList[i].PosInc.vy=0;
			SpriteList[i].Scale.vx=1024;
			SpriteList[i].Scale.vy=1024;
			SpriteList[i].ScaleInc.vx=0;
			SpriteList[i].ScaleInc.vy=0;
			
			InitSprite(&SpriteList[i]);
			SpriteList[i].Pos.vx=getRndRange(512<<MOVE_SHIFT);
			SpriteList[i].Pos.vy=getRndRange(256<<MOVE_SHIFT);
		}


}

/*****************************************************************************/
CLayerBack::~CLayerBack()
{
}

/*****************************************************************************/
/*****************************************************************************/
/*****************************************************************************/
void	CLayerBack::init(DVECTOR &MapPos,int Shift)
{
		MapXYShift=Shift;

		BandHeight=(MapHeight*16)/(BandCount);
		if (BandHeight>=512) BandHeight=511;

		for (int i=0; i<BandCount; i++)
		{
			SetPolyG4(&Band[i]);
			setRGB0(&Band[i],Data->Data[i+0].RGB[0],Data->Data[i+0].RGB[1],Data->Data[i+0].RGB[2]);
			setRGB1(&Band[i],Data->Data[i+0].RGB[0],Data->Data[i+0].RGB[1],Data->Data[i+0].RGB[2]);
			setRGB2(&Band[i],Data->Data[i+1].RGB[0],Data->Data[i+1].RGB[1],Data->Data[i+1].RGB[2]);
			setRGB3(&Band[i],Data->Data[i+1].RGB[0],Data->Data[i+1].RGB[1],Data->Data[i+1].RGB[2]);
		}

		PosDx=0;
		PosDy=0;
		XOfs=MapPos.vy;
		YOfs=MapPos.vy;
}

/*****************************************************************************/
void	CLayerBack::shutdown()
{
}

/*****************************************************************************/
void	CLayerBack::InitSprite(sBackSprite *SpritePtr)
{
int		StartPos=getRnd();
int		Pos=getRnd();

int		XInc=(getRndRange((1<<((MOVE_SHIFT*1)/3))-1)+1)<<MOVE_SHIFT;
int		YInc=(getRndRange((1<<((MOVE_SHIFT*1)/3))-1)+1)<<MOVE_SHIFT;

		if (Data->BackGfx[SpritePtr->Type].Flags & MOVE)
		if (0)
		{
			switch(StartPos&3)
			{
				case 0:	// Left
					SpritePtr->Pos.vx=-63;
					SpritePtr->Pos.vy=(Pos%(256+128))-63;
					SpritePtr->PosInc.vx=XInc;
					if (XInc&1)
						SpritePtr->PosInc.vy=+YInc;
					else
						SpritePtr->PosInc.vy=-YInc;
					break;

				case 1:	// Right
					SpritePtr->Pos.vx=512+63;
					SpritePtr->Pos.vy=(Pos%(256+128))-63;
					SpritePtr->PosInc.vx=-XInc;
					if (XInc&1)
						SpritePtr->PosInc.vy=+YInc;
					else
						SpritePtr->PosInc.vy=-YInc;
					break;
				case 2:	// Top
					SpritePtr->Pos.vx=(Pos%(512+128))-63;
					SpritePtr->Pos.vy=-63;
					if (YInc&1)
						SpritePtr->PosInc.vx=+XInc;
					else
						SpritePtr->PosInc.vx=-XInc;
					SpritePtr->PosInc.vy=YInc;
					break;
				case 3:	// Bottom
					SpritePtr->Pos.vx=(Pos%(512+128))-63;
					SpritePtr->Pos.vy=256+63;
					if (YInc&1)
						SpritePtr->PosInc.vx=+XInc;
					else
						SpritePtr->PosInc.vx=-XInc;
					SpritePtr->PosInc.vy=-YInc;
					break;
			}
			SpritePtr->Pos.vx<<=MOVE_SHIFT;
			SpritePtr->Pos.vy<<=MOVE_SHIFT;
		}
		
		if (Data->BackGfx[SpritePtr->Type].Flags & SCALE)
		if (0)
		{
			SpritePtr->Scale.vx=getRndRange(4095);
			SpritePtr->Scale.vy=getRndRange(4095);
			SpritePtr->ScaleInc.vx=getRndRange(31)+31;
			if (SpritePtr->ScaleInc.vx&1) SpritePtr->ScaleInc.vx=-SpritePtr->ScaleInc.vx;
			SpritePtr->ScaleInc.vy=getRndRange(31)+31;
			if (SpritePtr->ScaleInc.vy&1) SpritePtr->ScaleInc.vy=-SpritePtr->ScaleInc.vy;
		}
		if (Data->BackGfx[SpritePtr->Type].Flags & SPIN)
		if (0)
		{
			SpritePtr->AngleInc=getRndRange(31)+31;
			if (SpritePtr->AngleInc&1) SpritePtr->AngleInc=-SpritePtr->AngleInc;
		}

		if (Data->BackGfx[SpritePtr->Type].Flags & COLOR)
		{
int	i;
		i=getRndRange(BackRGBTableSize-1); SpritePtr->Poly.r0=BackRGBTable[i].R; SpritePtr->Poly.g0=BackRGBTable[i].G; SpritePtr->Poly.b0=BackRGBTable[i].B;
		i=getRndRange(BackRGBTableSize-1); SpritePtr->Poly.r1=BackRGBTable[i].R; SpritePtr->Poly.g1=BackRGBTable[i].G; SpritePtr->Poly.b1=BackRGBTable[i].B;
		i=getRndRange(BackRGBTableSize-1); SpritePtr->Poly.r2=BackRGBTable[i].R; SpritePtr->Poly.g2=BackRGBTable[i].G; SpritePtr->Poly.b2=BackRGBTable[i].B;
		i=getRndRange(BackRGBTableSize-1); SpritePtr->Poly.r3=BackRGBTable[i].R; SpritePtr->Poly.g3=BackRGBTable[i].G; SpritePtr->Poly.b3=BackRGBTable[i].B;
		}


}

/*****************************************************************************/
//extern	DVECTOR	TileMapOfs;
void	CLayerBack::think(DVECTOR &MapPos)
{ 
int		_XOfs=MapPos.vx>>MapXYShift;
int		_YOfs=MapPos.vy>>MapXYShift;
//		_YOfs+=TileMapOfs.vy;

		PosDx=(_XOfs-XOfs)<<MOVE_SHIFT;
		PosDy=(_YOfs-YOfs)<<MOVE_SHIFT;

		XOfs=_XOfs;
		YOfs=_YOfs;
}

/*****************************************************************************/
int	Tran=0;

void	CLayerBack::render()
{
const	int	OTPos=(MAX_OT-1);
sOT		*ThisOT=OtPtr+OTPos;
int		i,ThisY=-YOfs;

// Render Back Sprites
#ifndef __USER_paul__
sBackSprite		*SpritePtr=SpriteList;
		for (i=0; i<SPRITE_MAX; i++)
		{
			SpritePtr->Pos.vx+=SpritePtr->PosInc.vx;
			SpritePtr->Pos.vy+=SpritePtr->PosInc.vy;
			SpritePtr->Pos.vx-=PosDx;
			SpritePtr->Pos.vy-=PosDy;

			SpritePtr->Angle+=SpritePtr->AngleInc;
			SpritePtr->Angle&=4095;
			SpritePtr->Scale.vx+=SpritePtr->ScaleInc.vx;
			SpritePtr->Scale.vx&=4095;
			SpritePtr->Scale.vy+=SpritePtr->ScaleInc.vy;
			SpritePtr->Scale.vy&=4095;

			int	X=(SpritePtr->Pos.vx>>MOVE_SHIFT);
			int	Y=(SpritePtr->Pos.vy>>MOVE_SHIFT);

			
			if (X<-64 || X>512+64 || Y<-64 || Y>256+64)
			{
				InitSprite(SpritePtr);
			}


POLY_GT4	*Gt4=&SpriteList[i].Poly;
int			ScaleX=msin(SpritePtr->Scale.vx);
int			ScaleY=msin(SpritePtr->Scale.vy);
			Gt4->tpage|=Tran<<5;

sBox		Box;
			RotateBox(&Box,SpritePtr->W,SpritePtr->W,ScaleX,ScaleY,SpritePtr->Angle);
			Gt4->x0=X+Box.x0; Gt4->y0=Y+Box.y0;
			Gt4->x1=X+Box.x1; Gt4->y1=Y+Box.y1;
			Gt4->x2=X+Box.x2; Gt4->y2=Y+Box.y2;
			Gt4->x3=X+Box.x3; Gt4->y3=Y+Box.y3;
			AddPrim(ThisOT,Gt4);
			SpritePtr++;
		}
#endif	/* __USER_paul__ */

// Render Back Shade
		for (i=0; i<BandCount; i++)
		{
			setXYWH(&Band[i],0,ThisY,512,BandHeight);
			addPrim(ThisOT,&Band[i]);
			ThisY+=BandHeight;
		}
}