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(svn r15313) -Cleanup: Use helper functions we already have and add some documentation.

This commit is contained in:
michi_cc 2009-02-02 01:28:42 +00:00
parent aad67b5736
commit 44016a4d6e
1 changed files with 8 additions and 6 deletions
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14
src/train_cmd.cpp
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@ -2456,7 +2456,7 @@ void FreeTrainTrackReservation(const Vehicle *v, TileIndex origin, Trackdir orig
CFollowTrackRail ft(v, GetRailTypeInfo(v->u.rail.railtype)->compatible_railtypes);
while (ft.Follow(tile, td)) {
tile = ft.m_new_tile;
TrackdirBits bits = (TrackdirBits)(ft.m_new_td_bits & (GetReservedTrackbits(tile) * 0x101));
TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
td = RemoveFirstTrackdir(&bits);
assert(bits == TRACKDIR_BIT_NONE);
@ -2562,8 +2562,8 @@ static const byte _pick_track_table[6] = {1, 3, 2, 2, 0, 0};
* @param enterdir Diagonal direction the train is coming from
* @param tracks Usable tracks on the new tile
* @param path_not_found [out] Set to false if the pathfinder couldn't find a way to the destination
* @param do_track_reservation
* @param dest [out]
* @param do_track_reservation Path reservation is requested
* @param dest [out] State and destination of the requested path
* @return The best track the train should follow
*/
static Track DoTrainPathfind(Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool do_track_reservation, PBSTileInfo *dest)
@ -3024,7 +3024,9 @@ static Track ChooseTrainTrack(Vehicle *v, TileIndex tile, DiagDirection enterdir
* Try to reserve a path to a safe position.
*
* @param v The vehicle
* @return True if a path could be reserved
* @param mark_as_stuck Should the train be marked as stuck on a failed reservation?
* @param first_tile_okay True if no path should be reserved if the current tile is a safe position.
* @return True if a path could be reserved.
*/
bool TryPathReserve(Vehicle *v, bool mark_as_stuck, bool first_tile_okay)
{
@ -3049,7 +3051,7 @@ bool TryPathReserve(Vehicle *v, bool mark_as_stuck, bool first_tile_okay)
TileIndex next_tile = TileAddByDiagDir(v->tile, dir);
if (IsTileType(next_tile, MP_RAILWAY) && HasReservedTracks(next_tile, DiagdirReachesTracks(dir))) {
/* Can have only one reserved trackdir. */
Trackdir td = FindFirstTrackdir((TrackdirBits)(GetReservedTrackbits(next_tile) * 0x101 & DiagdirReachesTrackdirs(dir)));
Trackdir td = FindFirstTrackdir(TrackBitsToTrackdirBits(GetReservedTrackbits(next_tile)) & DiagdirReachesTrackdirs(dir));
if (HasSignalOnTrackdir(next_tile, td) && HasSignalOnTrackdir(next_tile, ReverseTrackdir(td)) &&
!IsPbsSignal(GetSignalType(next_tile, TrackdirToTrack(td)))) {
/* Signal already reserved, is not ours. */
@ -3084,7 +3086,7 @@ bool TryPathReserve(Vehicle *v, bool mark_as_stuck, bool first_tile_okay)
DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0) & DiagdirReachesTrackdirs(exitdir));
TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
if (_settings_game.pf.pathfinder_for_trains != VPF_NTP && _settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));