hzkems.h

c游戏编程从入门到精通_全部源代码和文档

unsigned hzhandle;
unsigned char far *fc;

char Load_Hzk16_Ems(void)
{
  int e,hzk,page,i,j;
  char flag;
  unsigned a,pageaddr;
  unsigned char far *tmp,buffer[4096];
  unsigned max_block,total;
  unsigned totalpage;
  hzk=open("hzk16",O_RDONLY|O_BINARY);
  if (hzk!=-1)
  {
    if (test_ems())
    {
      if (!get_EMS_status())
      {
	flag=get_number_of_pages(&a,&totalpage);
	page=28;
	if (a>=page)
	{
	  flag=get_page_frame_segment(&pageaddr);
	}
	if ((!flag) && (!allocate_memory(&hzhandle,page)))
	{
	  fc=(char far *)MK_FP(pageaddr,0);
	  tmp=fc; a=0;
	  for (e=1;e!=0;)
	  {
	    if (tmp==fc+16384)
	    {
	      map_memory(0,a,hzhandle);
	      a++; tmp=fc;
	    }
	    e=read(hzk,buffer,4096);
	    for (i=0;i<e;i+=32)
	    {
	      for (j=0;j<32;j++) *tmp++=buffer[i+j];
	    }
	  }
	  while (tmp-fc<16384) *tmp++=0;
	  close(hzk);
	return(0);
	}
      }
    }
  }
  return(1);
}

void Read_Hzk16_Ems(int ch0,int ch1,unsigned char *buffer)
{
      int i;
      unsigned p1,p2;
      unsigned char far *dot;
      p1=ch0-161;
      p1=p1*94+ch1-161;

	p2=p1>>9;
	map_memory(0,p2,hzhandle);
	p2=(p1 & 511)<<5;
	dot=fc+p2;
	for(i=0;i<32;i++)
		buffer[i]=dot[i];
}

void Free_Hzk16_Ems(void)
{
release_memory(hzhandle);
}

void Write_Hzk_Ems(char ch0,char ch1,int x,int y,int color)
{
register int i,j,k;
unsigned vpos;
char bitdata[32];
Read_Hzk16_Ems(ch0,ch1,bitdata);
for(i=0;i<16;i++)
for(j=0;j<8;j++){
if(bitdata[2*i]&bit[j])
Plot_Pixel_Fast(x+j,i+y,color);
if(bitdata[2*i+1]&bit[j])
Plot_Pixel_Fast(x+8+j,i+y,color);
}
}
void Write_Hzk_String_Ems(char *str,int x,int y,int color)
{
int num,i,j,xx;
unsigned char s0,s1;
num=strlen(str);
xx=x;
for(i=0;i<num;i+=2){
Write_Hzk_Ems(str[i],str[i+1],xx,y,color);
xx+=16;
}
}