www.pudn.com > SuperMario.zip > ENGINE.CPP

#include  
#include  
#include  
#include  
#include "engine.h" 
 
BITMAP *screen; 
int set_video_mode(int w,int h) 
{ 
  char mode; 
  if(w==320&&h==200) 
    mode=0x13; 
  else return 0; 
  union REGS inregs,outregs; 
  inregs.h.ah=0; 
  inregs.h.al=mode; 
  int86(0x10,&inregs,&outregs); 
  screen=(BITMAP *)malloc(sizeof(screen)); 
  screen->type=VIDEO_MEM; 
  screen->w=w; 
  screen->h=h; 
  screen->buffer=(char far *)0xa0000000L; 
  return 1; 
} 
 
 
 
BITMAP *creat_bitmap(int w,int h) 
{ 
     BITMAP *temp; 
     temp=(BITMAP *)malloc(sizeof(temp)); 
     if((temp->buffer=(char far *)farmalloc((long)w*(long)h+1))==NULL) 
       return(0); 
     temp->w=w; 
     temp->h=h; 
     temp->type=MEM; 
     return temp; 
} 
 
 
int blit(BITMAP *dest,BITMAP *source,int x1,int y1,int x2,int y2,int w,int h) 
{ 
  unsigned offset_d,offset_s; 
  int i; 
 
  if(x1>dest->w)return 0; 
 
  if(x1<0){w+=x1;x1=0;} 
  if(w<0)return 0; 
 
  if(x1+w>dest->w)w=dest->w-x1; 
  if(w<0)return 0; 
 
  if(y1<0){h+=y1;y1=0;} 
  if(h<0)return 0; 
 
  if(y1+h>dest->h)h=dest->h-y1; 
  if(h<0)return 0; 
 
  offset_d=x1+y1*dest->w; 
  offset_s=x2+y2*source->w; 
 
  for(i=0;ibuffer+offset_d,source->buffer+offset_s,w); 
    offset_d+=dest->w; 
    offset_s+=source->w; 
  } 
 return 1; 
} 
 
int blit_mask(BITMAP *dest,BITMAP *source,int x1,int y1,int x2,int y2,int w,int h) 
{ 
  unsigned offset_d,offset_s; 
  int i,j; 
  char data; 
  if(x1>dest->w)return 0; 
 
  if(x1<0){w+=x1;x1=0;} 
  if(w<0)return 0; 
 
  if(x1+w>dest->w)w=dest->w-x1; 
  if(w<0)return 0; 
 
  if(y1<0){h+=y1;y1=0;} 
  if(h<0)return 0; 
 
  if(y1+h>dest->h)h=dest->h-y1; 
  if(h<0)return 0; 
 
  offset_d=x1+y1*dest->w; 
  offset_s=x2+y2*source->w; 
 
  for(i=0;ibuffer[offset_s+j])) 
       dest->buffer[offset_d+j]=data; 
    offset_d+=dest->w; 
    offset_s+=source->w; 
  } 
 return 1; 
} 
 
 
void del_bitmap(BITMAP *temp) 
{ 
 if(temp->buffer)farfree(temp->buffer); 
 if(temp)free(temp); 
} 
 
 
void wait_vsync(void) 
    { 
      while(inp(0x3da)&0x08); 
      while(!(inp(0x3da)&0x08)); 
    } 
 
void set_text_mode() 
{ 
 asm{ 
    XOR AH,AH 
    MOV AL,3 
    MOV BL,8 
    INT 10H 
    } 
} 
 
void clean_bitmap(BITMAP *temp,int col) 
{ 
 _fmemset(temp->buffer,col,temp->w*temp->h); 
}