Function MarkBadgeSeen

src/newgrf_badge.cpp:236–241

* Mark a badge a seen (used) by a feature. */

 * Mark a badge a seen (used) by a feature.
 */
void MarkBadgeSeen(BadgeID index, GrfSpecFeature feature)
{
	Badge *b = GetBadge(index);
	assert(b != nullptr);
	b->features.Set(feature);
}

/**
 * Append copyable badges from a list onto another.