diff options
| -rw-r--r-- | src/town_cmd.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/town_cmd.cpp b/src/town_cmd.cpp index e04fccadb..8a9e00dd5 100644 --- a/src/town_cmd.cpp +++ b/src/town_cmd.cpp @@ -907,7 +907,8 @@ static bool GrowTownWithBridge(const Town *t, TileIndex tile, DiagDirection brid /* Make sure the direction is compatible with the slope. * If any of the following bits match, the slope is forbidden for - * that diagdir. Total of 5 slopes per direction. + * that diagdir. This means 5 non-steep slopes, and 3 steep-slopes + * per diagdir. * 0 -> 0b1100 * 1 -> 0b0110 * 2 -> 0b0011 @@ -916,8 +917,11 @@ static bool GrowTownWithBridge(const Town *t, TileIndex tile, DiagDirection brid * the direction to get the forbidden slope mask. */ if (HASBITS(slope & 0x0F, 0xCC >> bridge_dir)) return false; + /* Assure that the bridge is connectable to the start side */ + if (!(GetTownRoadBits(TileAddByDiagDir(tile, ReverseDiagDir(bridge_dir))) & DiagDirToRoadBits(bridge_dir))) return false; + /* We are in the right direction */ - uint32 bridge_length = 0; // This value stores the length of the possible bridge + uint8 bridge_length = 0; // This value stores the length of the possible bridge TileIndex bridge_tile = tile; // Used to store the other waterside do { @@ -925,7 +929,7 @@ static bool GrowTownWithBridge(const Town *t, TileIndex tile, DiagDirection brid /* Max 11 tile long bridges */ return false; } - bridge_tile = TILE_MASK(bridge_tile + TileOffsByDiagDir(bridge_dir)); + bridge_tile = TileAddByDiagDir(bridge_tile, bridge_dir); } while (IsWaterTile(bridge_tile)); /* no water tiles in between? */ |