romchar.h

c游戏编程从入门到精通_全部源代码和文档

#define CHAR_HEIGHT 8
#define CHAR_WIDTH 8

unsigned char far *rom_char_set=(char far *)0xF000FA6EL;

void Blit_Char(int xc,int yc,char c,int color,int trans_flag)
{
int offset,x,y;
char far *work_char;
unsigned char bit_mask=0x80;
work_char=rom_char_set+c*CHAR_HEIGHT;
offset=(yc<<8)+(yc<<6)+xc;
for(y=0;y<CHAR_HEIGHT;y++)
{
bit_mask=0x80;
for(x=0;x<CHAR_WIDTH;x++)
{
if((*work_char&bit_mask))
video_buffer[offset+x]=color;
else if(!trans_flag)
video_buffer[offset+x]=0;
bit_mask=(bit_mask>>1);
}
offset+=SCREEN_WIDTH;
work_char++;
}
}

void Blit_String(int x,int y,int color,char *string,int trans_flag)
{
int index;
for(index=0;string[index]!=0;index++)
{
Blit_Char(x+(index<<3),y,string[index],color,trans_flag);
}
}