extern void move_player (struct World * world, char d) {
// Move player in direction d, update log and turn over to the enemy.
struct yx_uint16 t = mv_yx_in_dir (d, world->player->pos);
struct Monster * monster;
extern void move_player (struct World * world, char d) {
// Move player in direction d, update log and turn over to the enemy.
struct yx_uint16 t = mv_yx_in_dir (d, world->player->pos);
struct Monster * monster;