@@ -186,6 +186,7 @@ static inline bool IsTileOwner(TileIndex
static inline void SetTropicZone(TileIndex tile, TropicZone type)
{
assert(tile < MapSize());
assert(!IsTileType(tile, MP_VOID) || type == TROPICZONE_NORMAL);
SB(_m[tile].m6, 0, 2, type);
}