diff options
Diffstat (limited to 'road_cmd.c')
| -rw-r--r-- | road_cmd.c | 74 |
1 files changed, 43 insertions, 31 deletions
diff --git a/road_cmd.c b/road_cmd.c index 3a1ef1a1f..5d490a040 100644 --- a/road_cmd.c +++ b/road_cmd.c @@ -43,9 +43,9 @@ static bool HasTileRoadAt(TileIndex tile, int i) break; case MP_STATION: - b = _m[tile].m5; - if (!IS_BYTE_INSIDE(b, 0x43, 0x43 + 8)) return false; - return ((~(b - 0x43) & 3) == i); + return + IS_BYTE_INSIDE(_m[tile].m5, 0x43, 0x43 + 8) && + (~(_m[tile].m5 - 0x43) & 3) == i; case MP_TUNNELBRIDGE: mask = GetRoadBitsByTile(tile); @@ -373,14 +373,22 @@ int32 CmdBuildRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2) switch (ti.type) { case MP_STREET: - if (!(ti.map5 & 0xF0)) { - if ((pieces & (byte)ti.map5) == pieces) - return_cmd_error(STR_1007_ALREADY_BUILT); - existing = ti.map5; - } else { - if (!(ti.map5 & 0xE0) && pieces != ((ti.map5 & 8) ? 5 : 10)) - return_cmd_error(STR_1007_ALREADY_BUILT); - goto do_clear; + switch (GB(ti.map5, 4, 4)) { + case 0: // normal road + if ((pieces & (byte)ti.map5) == pieces) { + return_cmd_error(STR_1007_ALREADY_BUILT); + } + existing = ti.map5; + break; + + case 1: // level crossing + if (pieces != (ti.map5 & 8 ? 5 : 10)) { + return_cmd_error(STR_1007_ALREADY_BUILT); + } + goto do_clear; + + default: // depot + goto do_clear; } break; @@ -1108,27 +1116,31 @@ static const byte _road_trackbits[16] = { static uint32 GetTileTrackStatus_Road(TileIndex tile, TransportType mode) { - if (mode == TRANSPORT_RAIL) { - if (!IsLevelCrossing(tile)) - return 0; - return _m[tile].m5 & 8 ? 0x101 : 0x202; - } else if (mode == TRANSPORT_ROAD) { - byte b = _m[tile].m5; - if ((b & 0xF0) == 0) { - /* Ordinary road */ - if (!_road_special_gettrackstatus && GB(_m[tile].m4, 4, 3) >= 6) - return 0; - return _road_trackbits[b&0xF] * 0x101; - } else if (IsLevelCrossing(tile)) { - /* Crossing */ - uint32 r = 0x101; - if (b&8) r <<= 1; - - if (b&4) { - r *= 0x10001; + switch (mode) { + case TRANSPORT_RAIL: + if (!IsLevelCrossing(tile)) return 0; + return _m[tile].m5 & 8 ? 0x101 : 0x202; + + case TRANSPORT_ROAD: + switch (GB(_m[tile].m5, 4, 4)) { + case 0: // normal road + if (!_road_special_gettrackstatus && GB(_m[tile].m4, 4, 3) >= 6) { + return 0; + } + return _road_trackbits[GB(_m[tile].m5, 0, 4)] * 0x101; + + case 1: { // level crossing + uint32 r = (_m[tile].m5 & 8 ? 0x202 : 0x101); + if (_m[tile].m5 & 4) r *= 0x10001; + return r; + } + + default: // depot + break; } - return r; - } + break; + + default: break; } return 0; } |