diff options
Diffstat (limited to 'src/ai/api/ai_tunnel.cpp')
| -rw-r--r-- | src/ai/api/ai_tunnel.cpp | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/ai/api/ai_tunnel.cpp b/src/ai/api/ai_tunnel.cpp index cc7d95606..ea103ce4e 100644 --- a/src/ai/api/ai_tunnel.cpp +++ b/src/ai/api/ai_tunnel.cpp @@ -23,8 +23,21 @@ /* If it's a tunnel alread, take the easy way out! */ if (IsTunnelTile(tile)) return ::GetOtherTunnelEnd(tile); - ::DoCommand(tile, 0, 0, DC_AUTO, CMD_BUILD_TUNNEL); - return _build_tunnel_endtile == 0 ? INVALID_TILE : _build_tunnel_endtile; + uint start_z; + Slope start_tileh = ::GetTileSlope(tile, &start_z); + DiagDirection direction = ::GetInclinedSlopeDirection(start_tileh); + if (direction == INVALID_DIAGDIR) return INVALID_TILE; + + TileIndexDiff delta = ::TileOffsByDiagDir(direction); + uint end_z; + do { + tile += delta; + if (!::IsValidTile(tile)) return INVALID_TILE; + + ::GetTileSlope(tile, &end_z); + } while (start_z != end_z); + + return tile; } static void _DoCommandReturnBuildTunnel2(class AIInstance *instance) |