+
+#include "yx_uint16.h" /* for uint8_t, uint16_t */
+
+
+
+extern uint8_t yx_uint16_cmp(struct yx_uint16 * a, struct yx_uint16 * b)
+{
+ if (a->y == b->y && a->x == b->x)
+ {
+ return 1;
+ }
+ else
+ {
+ return 0;
+ }
+}
+
+
+
+extern struct yx_uint16 mv_yx_in_dir(enum dir d, struct yx_uint16 yx)
+{
+ if (d == NORTH)
+ {
+ yx.y--;
+ }
+ else if (d == EAST)
+ {
+ yx.x++;
+ }
+ else if (d == SOUTH)
+ {
+ yx.y++;
+ }
+ else if (d == WEST)
+ {
+ yx.x--;
+ }
+ return yx;
+}