+ // Ore y_min / y_max is displaced by ore_zero_level or remains unchanged.
+ // Any ore with a limit at +-MAX_MAP_GENERATION_LIMIT is considered to have
+ // that limit at +-infinity, so we do not alter that limit.
+ s32 y_min_disp = (y_min <= -MAX_MAP_GENERATION_LIMIT) ?
+ -MAX_MAP_GENERATION_LIMIT : y_min + ore_zero_level;
+
+ s32 y_max_disp = (y_max >= MAX_MAP_GENERATION_LIMIT) ?
+ MAX_MAP_GENERATION_LIMIT : y_max + ore_zero_level;
+
+ if (nmin.Y > y_max_disp || nmax.Y < y_min_disp)