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author | darkvater <darkvater@openttd.org> | 2004-08-11 22:07:08 +0000 |
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committer | darkvater <darkvater@openttd.org> | 2004-08-11 22:07:08 +0000 |
commit | f42201496093f04220e58b1c4cd4d69531839de4 (patch) | |
tree | bbd3f2f0084e8bba00dd232cb07236b5bebd9d6a /vehicle.c | |
parent | 6679afc48a1bec985b6687dee105730b89682224 (diff) | |
download | openttd-f42201496093f04220e58b1c4cd4d69531839de4.tar.xz |
(svn r23) -Some omments on the code (blathijs)
Diffstat (limited to 'vehicle.c')
-rw-r--r-- | vehicle.c | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -1458,11 +1458,18 @@ byte GetDirectionTowards(Vehicle *v, int x, int y) return (dir+((dirdiff&7)<5?1:-1)) & 7; } +/* Return value has bit 0x2 set, when the vehicle enters a station. Then, + * result << 8 contains the id of the station entered. If the return value has + * bit 0x8 set, the vehicle could not and did not enter the tile. Are there + * other bits that can be set? */ uint32 VehicleEnterTile(Vehicle *v, uint tile, int x, int y) { uint old_tile = v->tile; uint32 result = _tile_type_procs[GET_TILETYPE(tile)]->vehicle_enter_tile_proc(v, tile, x, y); + /* When vehicle_enter_tile_proc returns 8, that apparently means that + * we cannot enter the tile at all. In that case, don't call + * leave_tile. */ if (!(result & 8) && old_tile != tile) { VehicleLeaveTileProc *proc = _tile_type_procs[GET_TILETYPE(old_tile)]->vehicle_leave_tile_proc; if (proc != NULL) |