#define BYTE unsigned char

int SeekLine (signed int x1, signed int y1, signed int xs, signed int ys);
int SeekLine2 (signed int x1, signed int y1, signed int xs, signed int ys);
int SeekLine3 (signed int x1, signed int y1, signed int xs, signed int ys);
int GetXS (int x, int y);
int GetYS (int x, int y);


