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-rw-r--r--tile.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/tile.c b/tile.c
index f7f79ea84..cc54d1374 100644
--- a/tile.c
+++ b/tile.c
@@ -4,14 +4,13 @@
void SetMapExtraBits(TileIndex tile, byte bits)
{
assert(tile < MapSize());
- _map_extra_bits[tile >> 2] &= ~(3 << ((tile & 3) * 2));
- _map_extra_bits[tile >> 2] |= (bits&3) << ((tile & 3) * 2);
+ SB(_map_extra_bits[tile >> 2], (tile & 3) * 2, 2, bits & 3);
}
uint GetMapExtraBits(TileIndex tile)
{
assert(tile < MapSize());
- return (_map_extra_bits[tile >> 2] >> (tile & 3) * 2) & 3;
+ return GB(_map_extra_bits[tile >> 2], (tile & 3) * 2, 2);
}