spz16x16.c

十七种模拟器源代码 非常有用的作课程设计不可缺少的

/******************************************************************************/
/*                                                                            */
/*                          RAINE 16x16 TILE ZOOMING                          */
/*                                                                            */
/******************************************************************************/

#include "gameinc.h"
#include "spz16x16.h"
#include "debug.h"

/*

Not implemented:

- Could merge some stuff.
- x86 versions.
- There are 16 different ways to draw a 15x15 sprite, but the chained
  zooming code can only select 1. This probably causes a slight reduction
  in zooming image quality. Same applies to 1x1-14x14 data.

*/

#ifdef RAINE_DEBUG
#define DEBUG_TABLES
#endif

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

UINT8 zoom_1616_dat[(16+1)*16];	// [32+1][16] array
UINT8 zoom_1616r_dat[(16+1)*16];	// [32+1][16] array

void init_16x16_zoom(void)
{
	UINT8 *ZZZ;
	int xx,yy;
	
	// Make data table for normal orientation 
	
	for(yy=0;yy<=16;yy++){
		ZZZ=zoom_1616_dat+(yy<<4);
		for(xx=0;xx<yy;xx++){
			ZZZ[xx]=((xx<<4)/yy);
#ifdef DEBUG_TABLES
			print_debug("%02x ",ZZZ[xx]);
#endif
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",yy);
#endif
	}
	
	// Make data table for flipped orientation
	
	for(yy=0;yy<=16;yy++){
		ZZZ=zoom_1616r_dat+(yy<<4);
		for(xx=0;xx<yy;xx++){
			ZZZ[xx]=((((yy-1)-xx)<<4)/yy);
#ifdef DEBUG_TABLES
			print_debug("%02x ",ZZZ[xx]);
#endif
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",yy);
#endif
	}
}

// Make chain offset data for hardware with 16x16
// chained zoomed sprites [TAITO F2/F3/B-System]

UINT8 *make_16x16_zoom_ofs_type1(void)
{
	UINT8 *zoom16_ofs;
	int ta,tb,tc,td;
	
	zoom16_ofs = AllocateMem(256*32);
	
	for(ta=0;ta<256;ta++){
		td=0;
		for(tb=0;tb<32;tb++){
			tc = ((((tb+1)*16)*(ta+1))/256) - (((tb*16)*(ta+1))/256);
			zoom16_ofs[((255-ta)*32)+(31-tb)] = tc;
#ifdef DEBUG_TABLES
			print_debug("%02x ",tc);
#endif
			td += tc;
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",td);
#endif
	}
	
	return zoom16_ofs;
}

// Make chain offset data for hardware with 16x16
// chained zoomed sprites [TAITO Z-System]

UINT8 *make_16x16_zoom_ofs_type1z(void)
{
	UINT8 *zoom16_ofs;
	int ta,tb,tc,td;
	
	zoom16_ofs = AllocateMem(128*8);
	
	for(ta=0;ta<128;ta++){
		td=0;
		for(tb=0;tb<8;tb++){
			tc = ((((tb+1)*16)*(ta+1))/128) - (((tb*16)*(ta+1))/128);
			zoom16_ofs[(ta*8)+(7-tb)] = tc;
#ifdef DEBUG_TABLES
			print_debug("%02x ",tc);
#endif
			td += tc;
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",td);
#endif
	}
	
	return zoom16_ofs;
}

UINT8 *make_16x16_zoom_ofs_type1zz(void)
{
	UINT8 *zoom16_ofs;
	int ta,tb,tc,td;
	
	zoom16_ofs = AllocateMem(64*4);
	
	for(ta=0;ta<64;ta++){
		td=0;
		for(tb=0;tb<4;tb++){
			tc = ((((tb+1)*16)*(ta+1))/64) - (((tb*16)*(ta+1))/64);
			zoom16_ofs[(ta*4)+(3-tb)] = tc;
#ifdef DEBUG_TABLES
			print_debug("%02x ",tc);
#endif
			td += tc;
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",td);
#endif
	}
	
	return zoom16_ofs;
}

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

UINT8 zoom_1632_dat[33*32];	// [32+1][32] array
UINT8 zoom_1632r_dat[33*32];	// [32+1][32] array

void init_16x16_zoom_32(void)
{
	UINT8 *ZZZ;
	int xx,yy;
	
	// Make data table for normal orientation 
	
	for(yy=0;yy<=32;yy++){
		ZZZ=zoom_1632_dat+(yy*32);
		for(xx=0;xx<yy;xx++){
			ZZZ[xx]=((xx<<4)/yy);
#ifdef DEBUG_TABLES
			print_debug("%02x ",ZZZ[xx]);
#endif
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",yy);
#endif
	}
	
	// Make data table for flipped orientation
	
	for(yy=0;yy<=32;yy++){
		ZZZ=zoom_1632r_dat+(yy*32);
		for(xx=0;xx<yy;xx++){
			ZZZ[xx]=((((yy-1)-xx)<<4)/yy);
#ifdef DEBUG_TABLES
			print_debug("%02x ",ZZZ[xx]);
#endif
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",yy);
#endif
	}
}

// Make chain offset data for hardware with 16x16
// chained zoomed sprites [TAITO H/AIR-System]

UINT8 *make_16x16_zoom_ofs_type2(void)
{
	UINT8 *zoom16_ofs;
	int ta,tb,tc,td;
	
	zoom16_ofs = AllocateMem(128*4);
	
	for(ta=0;ta<128;ta++){
		td=0;
		for(tb=0;tb<4;tb++){
			tc = ((((tb+1)*16)*(ta+1))/64) - (((tb*16)*(ta+1))/64);
			zoom16_ofs[((ta)*4)+(3-tb)] = tc;
#ifdef DEBUG_TABLES
			print_debug("%02x ",tc);
#endif
			td += tc;
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",td);
#endif
	}
	
	return zoom16_ofs;
}

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

UINT8 zoom_1664_dat[65*64];	// [64+1][64] array
UINT8 zoom_1664r_dat[65*64];	// [64+1][64] array

void init_16x16_zoom_64(void)
{
	UINT8 *ZZZ;
	int xx,yy;
	
	// Make data table for normal orientation 
	
	for(yy=0;yy<=64;yy++){
		ZZZ=zoom_1664_dat+(yy*64);
		for(xx=0;xx<yy;xx++){
			ZZZ[xx]=((xx<<4)/yy);
#ifdef DEBUG_TABLES
			print_debug("%02x ",ZZZ[xx]);
#endif
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",yy);
#endif
	}
	
	// Make data table for flipped orientation
	
	for(yy=0;yy<=64;yy++){
		ZZZ=zoom_1664r_dat+(yy*64);
		for(xx=0;xx<yy;xx++){
			ZZZ[xx]=((((yy-1)-xx)<<4)/yy);
#ifdef DEBUG_TABLES
			print_debug("%02x ",ZZZ[xx]);
#endif
		}
#ifdef DEBUG_TABLES
		print_debug("[%02x]\n",yy);
#endif
	}
}

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

void Draw16x16_Trans_Mapped_ZoomXY(UINT8 *SPR, int x, int y, UINT8 *cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Trans_Mapped(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616_dat+(zoom_x<<4);
      ZZY=zoom_1616_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            if(SSS[ZZX[xx]]!=0) BIT[xx]=cmap[SSS[ZZX[xx]]];
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

void Draw16x16_Trans_Mapped_ZoomXY_FlipY(UINT8 *SPR, int x, int y, UINT8 *cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Trans_Mapped_FlipY(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616r_dat+(zoom_x<<4);
      ZZY=zoom_1616_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            if(SSS[ZZX[xx]]!=0) BIT[xx]=cmap[SSS[ZZX[xx]]];
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

void Draw16x16_Trans_Mapped_ZoomXY_FlipX(UINT8 *SPR, int x, int y, UINT8 *cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Trans_Mapped_FlipX(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616_dat+(zoom_x<<4);
      ZZY=zoom_1616r_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            if(SSS[ZZX[xx]]!=0) BIT[xx]=cmap[SSS[ZZX[xx]]];
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

void Draw16x16_Trans_Mapped_ZoomXY_FlipXY(UINT8 *SPR, int x, int y, UINT8 *cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Trans_Mapped_FlipXY(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616r_dat+(zoom_x<<4);
      ZZY=zoom_1616r_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            if(SSS[ZZX[xx]]!=0) BIT[xx]=cmap[SSS[ZZX[xx]]];
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

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

void Draw16x16_Mapped_ZoomXY(UINT8 *SPR, int x, int y, UINT8 *cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Mapped(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616_dat+(zoom_x<<4);
      ZZY=zoom_1616_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            BIT[xx]=cmap[SSS[ZZX[xx]]];
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

void Draw16x16_Mapped_ZoomXY_FlipY(UINT8 *SPR, int x, int y, UINT8 *cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;


   if((zoom_x+zoom_y)==32){
      Draw16x16_Mapped_FlipY(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616r_dat+(zoom_x<<4);
      ZZY=zoom_1616_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            BIT[xx]=cmap[SSS[ZZX[xx]]];
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

void Draw16x16_Mapped_ZoomXY_FlipX(UINT8 *SPR, int x, int y, UINT8 *cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Mapped_FlipX(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616_dat+(zoom_x<<4);
      ZZY=zoom_1616r_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            BIT[xx]=cmap[SSS[ZZX[xx]]];
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

void Draw16x16_Mapped_ZoomXY_FlipXY(UINT8 *SPR, int x, int y, UINT8 *cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Mapped_FlipXY(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616r_dat+(zoom_x<<4);
      ZZY=zoom_1616r_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            BIT[xx]=cmap[SSS[ZZX[xx]]];
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

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

void Draw16x16_Trans_ZoomXY(UINT8 *SPR, int x, int y, UINT8 cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Trans(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616_dat+(zoom_x<<4);
      ZZY=zoom_1616_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            if(SSS[ZZX[xx]]!=0) BIT[xx] = SSS[ZZX[xx]] | cmap;
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

void Draw16x16_Trans_ZoomXY_FlipY(UINT8 *SPR, int x, int y, UINT8 cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Trans_FlipY(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616r_dat+(zoom_x<<4);
      ZZY=zoom_1616_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            if(SSS[ZZX[xx]]!=0) BIT[xx] = SSS[ZZX[xx]] | cmap;
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

void Draw16x16_Trans_ZoomXY_FlipX(UINT8 *SPR, int x, int y, UINT8 cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Trans_FlipX(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616_dat+(zoom_x<<4);
      ZZY=zoom_1616r_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            if(SSS[ZZX[xx]]!=0) BIT[xx] = SSS[ZZX[xx]] | cmap;
         }while((++xx)<zoom_x);
         BIT+=GameBitmap->w;
      }while((++yy)<zoom_y);

   }
}

void Draw16x16_Trans_ZoomXY_FlipXY(UINT8 *SPR, int x, int y, UINT8 cmap, int zoom_x, int zoom_y)
{
   UINT8 *BIT,*SSS,*ZZX,*ZZY;
   int xx,yy;

   if((zoom_x+zoom_y)==32){
      Draw16x16_Trans_FlipXY(SPR,x,y,cmap);
      return;
   }

   if((zoom_x!=0)&&(zoom_y!=0)){

      ZZX=zoom_1616r_dat+(zoom_x<<4);
      ZZY=zoom_1616r_dat+(zoom_y<<4);

      BIT=GameBitmap->line[y]+x;

      yy=0;
      do{
         SSS=SPR+(ZZY[yy]<<4);
         xx=0;
         do{
            if(SSS[ZZX[xx]]!=0) BIT[xx] = SSS[ZZX[xx]] | cmap;
         }while((++xx)<zoom_x);