ref: ca4af600fdad77b3c4603a62c81eee51187fafcf
dir: /util.c/
#include <u.h> #include <libc.h> #include <thread.h> #include <draw.h> #include <mouse.h> #include <keyboard.h> #include <geometry.h> #include "dat.h" #include "fns.h" static char rowtab[] = "abcdefghijklmnopq"; char * cell2coords(Point2 cell) { static char s[3+1]; assert(cell.x < 17 && cell.x >= 0 && cell.y < 17 && cell.y >= 0); snprint(s, sizeof s, "%c%d", rowtab[(int)cell.y], (int)cell.x); return s; } Point2 coords2cell(char *s) { Point2 cell; char *p; assert(s[0] >= 'a' && s[0] <= 'q'); cell = Pt2(0,0,1); p = strchr(rowtab, s[0]); cell.y = p-rowtab; cell.x = strtol(s+1, nil, 10); assert(cell.x < 17 && cell.x >= 0); return cell; }