author | KUDr |
Sat, 30 Dec 2006 17:06:34 +0000 | |
branch | custombridgeheads |
changeset 5604 | 729d54e97b94 |
parent 5573 | afa6f92a71fd |
child 5616 | 0570ae953222 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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#ifndef FOLLOW_TRACK_HPP |
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#define FOLLOW_TRACK_HPP |
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#include "yapf.hpp" |
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/** Track follower helper template class (can serve pathfinders and vehicle |
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* controllers). See 6 different typedefs below for 3 different transport |
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* types w/ of w/o 90-deg turns allowed */ |
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template <TransportType Ttr_type_, bool T90deg_turns_allowed_ = true> |
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struct CFollowTrackT : public FollowTrack_t |
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{ |
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CPerformanceTimer* m_pPerf; |
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FORCEINLINE CFollowTrackT(const Vehicle* v = NULL, CPerformanceTimer* pPerf = NULL) |
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{ |
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Init(v, pPerf); |
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} |
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FORCEINLINE void Init(const Vehicle* v, CPerformanceTimer* pPerf) |
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{ |
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assert(!IsRailTT() || (v != NULL && v->type == VEH_Train)); |
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m_veh = v; |
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m_pPerf = pPerf; |
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// don't worry, all is inlined so compiler should remove unnecessary initializations |
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m_new_tile = INVALID_TILE; |
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m_new_td_bits = TRACKDIR_BIT_NONE; |
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m_exitdir = INVALID_DIAGDIR; |
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m_is_station = m_is_bridge = m_is_tunnel = false; |
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m_tiles_skipped = 0; |
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} |
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FORCEINLINE static TransportType TT() {return Ttr_type_;} |
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FORCEINLINE static bool IsWaterTT() {return TT() == TRANSPORT_WATER;} |
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FORCEINLINE static bool IsRailTT() {return TT() == TRANSPORT_RAIL;} |
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FORCEINLINE static bool IsRoadTT() {return TT() == TRANSPORT_ROAD;} |
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FORCEINLINE static bool Allow90degTurns() {return T90deg_turns_allowed_;} |
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/** main follower routine. Fills all members and return true on success. |
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* Otherwise returns false if track can't be followed. */ |
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FORCEINLINE bool Follow(TileIndex old_tile, Trackdir old_td) |
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{ |
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m_old_tile = old_tile; |
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m_old_td = old_td; |
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assert((GetTileTrackStatus(m_old_tile, TT()) & TrackdirToTrackdirBits(m_old_td)) != 0); |
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m_exitdir = TrackdirToExitdir(m_old_td); |
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if (EnteredDepot()) return true; |
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if (!CanExitOldTile()) return false; |
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FollowTileExit(); |
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if (!QueryNewTileTrackStatus()) return TryReverse(); |
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m_new_td_bits &= DiagdirReachesTrackdirs(m_exitdir); |
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if (!Allow90degTurns()) |
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m_new_td_bits &= (TrackdirBits)~(int)TrackdirCrossesTrackdirs(m_old_td); |
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if (m_new_td_bits == TRACKDIR_BIT_NONE) return false; |
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if (!CanEnterNewTile()) return false; |
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return true; |
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} |
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protected: |
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/** Follow the m_exitdir from m_old_tile and fill m_new_tile and m_tiles_skipped */ |
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FORCEINLINE void FollowTileExit() |
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{ |
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m_is_station = m_is_bridge = m_is_tunnel = false; |
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m_tiles_skipped = 0; |
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|
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// extra handling for tunnels in our direction |
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if (IsTunnelTile(m_old_tile)) { |
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DiagDirection tunnel_enterdir = GetTunnelDirection(m_old_tile); |
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if (tunnel_enterdir == m_exitdir) { |
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// we are entering the tunnel |
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FindLengthOfTunnelResult flotr = FindLengthOfTunnel(m_old_tile, m_exitdir); |
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m_new_tile = flotr.tile; |
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m_is_tunnel = true; |
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m_tiles_skipped = flotr.length - 1; |
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return; |
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} |
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assert(ReverseDiagDir(tunnel_enterdir) == m_exitdir); |
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} |
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// extra handling when leaving bridge ramp and entering the bridge |
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if (IsBridgeTile(m_old_tile)) { |
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DiagDirection bridge_enterdir = GetBridgeRampDirection(m_old_tile); |
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if (bridge_enterdir == m_exitdir) { |
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// we are entering the bridge |
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m_new_tile = GetOtherBridgeEnd(m_old_tile); |
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uint32 bridge_length = GetBridgeLength(m_old_tile, m_new_tile); |
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m_tiles_skipped = bridge_length; |
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m_is_bridge = true; |
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return; |
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} |
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} |
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// normal or station tile, do one step |
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TileIndexDiff diff = TileOffsByDiagDir(m_exitdir); |
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m_new_tile = TILE_ADD(m_old_tile, diff); |
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// special handling for stations |
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if (IsRailTT() && IsRailwayStationTile(m_new_tile)) { |
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m_is_station = true; |
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} else if (IsRoadTT() && IsRoadStopTile(m_new_tile)) { |
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m_is_station = true; |
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} else { |
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m_is_station = false; |
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} |
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} |
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|
107 |
|
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|
108 |
/** stores track status (available trackdirs) for the new tile into m_new_td_bits */ |
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parents:
diff
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|
109 |
FORCEINLINE bool QueryNewTileTrackStatus() |
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parents:
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|
110 |
{ |
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KUDr
parents:
diff
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|
111 |
CPerfStart perf(*m_pPerf); |
3912
76e7f798cb88
(svn r5013) -Fix: [YAPF] RVs trying to plan route through railway.
KUDr
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3900
diff
changeset
|
112 |
if (IsRailTT() && GetTileType(m_new_tile) == MP_RAILWAY && IsPlainRailTile(m_new_tile)) { |
3900
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parents:
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|
113 |
m_new_td_bits = (TrackdirBits)(GetTrackBits(m_new_tile) * 0x101); |
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KUDr
parents:
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|
114 |
} else { |
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KUDr
parents:
diff
changeset
|
115 |
uint32 ts = GetTileTrackStatus(m_new_tile, TT()); |
4984308f9125
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KUDr
parents:
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|
116 |
m_new_td_bits = (TrackdirBits)(ts & TRACKDIR_BIT_MASK); |
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KUDr
parents:
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|
117 |
} |
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parents:
diff
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|
118 |
return (m_new_td_bits != TRACKDIR_BIT_NONE); |
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|
119 |
} |
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|
120 |
|
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parents:
diff
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|
121 |
/** return true if we can leave m_old_tile in m_exitdir */ |
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parents:
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|
122 |
FORCEINLINE bool CanExitOldTile() |
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|
123 |
{ |
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parents:
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|
124 |
// road stop can be left at one direction only |
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KUDr
parents:
diff
changeset
|
125 |
if (IsRoadTT() && IsRoadStopTile(m_old_tile)) { |
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KUDr
parents:
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|
126 |
DiagDirection exitdir = GetRoadStopDir(m_old_tile); |
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parents:
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|
127 |
if (exitdir != m_exitdir) |
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parents:
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|
128 |
return false; |
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|
129 |
} |
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|
130 |
|
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|
131 |
// road depots can be also left in one direction only |
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|
132 |
if (IsRoadTT() && IsTileDepotType(m_old_tile, TT())) { |
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|
133 |
DiagDirection exitdir = GetRoadDepotDirection(m_old_tile); |
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|
134 |
if (exitdir != m_exitdir) |
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parents:
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|
135 |
return false; |
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KUDr
parents:
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|
136 |
} |
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parents:
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|
137 |
return true; |
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parents:
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|
138 |
} |
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changeset
|
139 |
|
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KUDr
parents:
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|
140 |
/** return true if we can enter m_new_tile from m_exitdir */ |
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KUDr
parents:
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changeset
|
141 |
FORCEINLINE bool CanEnterNewTile() |
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|
142 |
{ |
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KUDr
parents:
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changeset
|
143 |
if (IsRoadTT() && IsRoadStopTile(m_new_tile)) { |
4984308f9125
(svn r4987) Feature: Merged YAPF into trunk. Thanks to devs for continuous support and users for testing.
KUDr
parents:
diff
changeset
|
144 |
// road stop can be entered from one direction only |
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(svn r4987) Feature: Merged YAPF into trunk. Thanks to devs for continuous support and users for testing.
KUDr
parents:
diff
changeset
|
145 |
DiagDirection exitdir = GetRoadStopDir(m_new_tile); |
4984308f9125
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KUDr
parents:
diff
changeset
|
146 |
if (ReverseDiagDir(exitdir) != m_exitdir) |
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|
147 |
return false; |
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|
148 |
} |
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|
149 |
|
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diff
changeset
|
150 |
// road and rail depots can also be entered from one direction only |
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KUDr
parents:
diff
changeset
|
151 |
if (IsRoadTT() && IsTileDepotType(m_new_tile, TT())) { |
4984308f9125
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parents:
diff
changeset
|
152 |
DiagDirection exitdir = GetRoadDepotDirection(m_new_tile); |
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|
153 |
if (ReverseDiagDir(exitdir) != m_exitdir) |
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KUDr
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diff
changeset
|
154 |
return false; |
4407
d639dd97eff0
(svn r6160) -Fix [ 1519167 ] Bus trying to service in depot of other company (mart3p)
KUDr
parents:
3977
diff
changeset
|
155 |
// don't try to enter other player's depots |
d639dd97eff0
(svn r6160) -Fix [ 1519167 ] Bus trying to service in depot of other company (mart3p)
KUDr
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3977
diff
changeset
|
156 |
if (GetTileOwner(m_new_tile) != m_veh->owner) { |
d639dd97eff0
(svn r6160) -Fix [ 1519167 ] Bus trying to service in depot of other company (mart3p)
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3977
diff
changeset
|
157 |
return false; |
d639dd97eff0
(svn r6160) -Fix [ 1519167 ] Bus trying to service in depot of other company (mart3p)
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3977
diff
changeset
|
158 |
} |
3900
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|
159 |
} |
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KUDr
parents:
diff
changeset
|
160 |
if (IsRailTT() && IsTileDepotType(m_new_tile, TT())) { |
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KUDr
parents:
diff
changeset
|
161 |
DiagDirection exitdir = GetRailDepotDirection(m_new_tile); |
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KUDr
parents:
diff
changeset
|
162 |
if (ReverseDiagDir(exitdir) != m_exitdir) |
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KUDr
parents:
diff
changeset
|
163 |
return false; |
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KUDr
parents:
diff
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|
164 |
} |
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KUDr
parents:
diff
changeset
|
165 |
|
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KUDr
parents:
diff
changeset
|
166 |
// rail transport is possible only on tiles with the same owner as vehicle |
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KUDr
parents:
diff
changeset
|
167 |
if (IsRailTT() && GetTileOwner(m_new_tile) != m_veh->owner) { |
4984308f9125
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KUDr
parents:
diff
changeset
|
168 |
// different owner |
5573
afa6f92a71fd
(svn r7573) -Merged the bridge branch. Allows to build bridges of arbitrary rail/road combinations (including signals)
celestar
parents:
4559
diff
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|
169 |
return false; |
3900
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KUDr
parents:
diff
changeset
|
170 |
} |
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KUDr
parents:
diff
changeset
|
171 |
|
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KUDr
parents:
diff
changeset
|
172 |
// rail transport is possible only on compatible rail types |
4984308f9125
(svn r4987) Feature: Merged YAPF into trunk. Thanks to devs for continuous support and users for testing.
KUDr
parents:
diff
changeset
|
173 |
if (IsRailTT()) { |
4984308f9125
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KUDr
parents:
diff
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|
174 |
RailType rail_type = GetTileRailType(m_new_tile, DiagdirToDiagTrackdir(m_exitdir)); |
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parents:
diff
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|
175 |
if (((1 << rail_type) & m_veh->u.rail.compatible_railtypes) == 0) { |
4984308f9125
(svn r4987) Feature: Merged YAPF into trunk. Thanks to devs for continuous support and users for testing.
KUDr
parents:
diff
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|
176 |
// incompatible rail type |
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parents:
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|
177 |
return false; |
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KUDr
parents:
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|
178 |
} |
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parents:
diff
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|
179 |
} |
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KUDr
parents:
diff
changeset
|
180 |
|
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KUDr
parents:
diff
changeset
|
181 |
// tunnel tiles can be entered only from proper direction |
4984308f9125
(svn r4987) Feature: Merged YAPF into trunk. Thanks to devs for continuous support and users for testing.
KUDr
parents:
diff
changeset
|
182 |
if (!IsWaterTT() && !m_is_tunnel && IsTunnelTile(m_new_tile)) { |
4984308f9125
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KUDr
parents:
diff
changeset
|
183 |
DiagDirection tunnel_enterdir = GetTunnelDirection(m_new_tile); |
4984308f9125
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KUDr
parents:
diff
changeset
|
184 |
if (tunnel_enterdir != m_exitdir) |
4984308f9125
(svn r4987) Feature: Merged YAPF into trunk. Thanks to devs for continuous support and users for testing.
KUDr
parents:
diff
changeset
|
185 |
return false; |
4984308f9125
(svn r4987) Feature: Merged YAPF into trunk. Thanks to devs for continuous support and users for testing.
KUDr
parents:
diff
changeset
|
186 |
} |
3931
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
KUDr
parents:
3915
diff
changeset
|
187 |
|
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
KUDr
parents:
3915
diff
changeset
|
188 |
// special handling for rail stations - get to the end of platform |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
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diff
changeset
|
189 |
if (IsRailTT() && m_is_station) { |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
KUDr
parents:
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|
190 |
// entered railway station |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
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diff
changeset
|
191 |
// get platform length |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
KUDr
parents:
3915
diff
changeset
|
192 |
uint length = GetPlatformLength(m_new_tile, TrackdirToExitdir(m_old_td)); |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
KUDr
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diff
changeset
|
193 |
// how big step we must do to get to the last platform tile; |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
KUDr
parents:
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diff
changeset
|
194 |
m_tiles_skipped = length - 1; |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
KUDr
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changeset
|
195 |
// move to the platform end |
4559
c853d2440065
(svn r6406) -Codechange: Rename TileOffsByDir to TileOffsByDiagDir because it accepts
Darkvater
parents:
4549
diff
changeset
|
196 |
TileIndexDiff diff = TileOffsByDiagDir(m_exitdir); |
3931
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
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|
197 |
diff *= m_tiles_skipped; |
ca6abd14504a
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diff
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|
198 |
m_new_tile = TILE_ADD(m_new_tile, diff); |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
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|
199 |
return true; |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
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diff
changeset
|
200 |
} |
ca6abd14504a
(svn r5066) -Feature: [YAPF] Train selects the best station platform by length
KUDr
parents:
3915
diff
changeset
|
201 |
|
3900
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KUDr
parents:
diff
changeset
|
202 |
return true; |
4984308f9125
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KUDr
parents:
diff
changeset
|
203 |
} |
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KUDr
parents:
diff
changeset
|
204 |
|
3976
b52d2c1acc5c
(svn r5153) - Fix: [YAPF] RVs can now plan path reversing in depot or end of road
KUDr
parents:
3933
diff
changeset
|
205 |
/** return true if we entered depot and reversed inside */ |
b52d2c1acc5c
(svn r5153) - Fix: [YAPF] RVs can now plan path reversing in depot or end of road
KUDr
parents:
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diff
changeset
|
206 |
FORCEINLINE bool EnteredDepot() |
3900
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KUDr
parents:
diff
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|
207 |
{ |
3976
b52d2c1acc5c
(svn r5153) - Fix: [YAPF] RVs can now plan path reversing in depot or end of road
KUDr
parents:
3933
diff
changeset
|
208 |
// rail and road depots cause reversing |
b52d2c1acc5c
(svn r5153) - Fix: [YAPF] RVs can now plan path reversing in depot or end of road
KUDr
parents:
3933
diff
changeset
|
209 |
if (!IsWaterTT() && IsTileDepotType(m_old_tile, TT())) { |
b52d2c1acc5c
(svn r5153) - Fix: [YAPF] RVs can now plan path reversing in depot or end of road
KUDr
parents:
3933
diff
changeset
|
210 |
DiagDirection exitdir = IsRailTT() ? GetRailDepotDirection(m_old_tile) : GetRoadDepotDirection(m_old_tile); |
3900
4984308f9125
(svn r4987) Feature: Merged YAPF into trunk. Thanks to devs for continuous support and users for testing.
KUDr
parents:
diff
changeset
|
211 |
if (exitdir != m_exitdir) { |
4984308f9125
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KUDr
parents:
diff
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|
212 |
// reverse |
4984308f9125
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KUDr
parents:
diff
changeset
|
213 |
m_new_tile = m_old_tile; |
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m_new_td_bits = TrackdirToTrackdirBits(ReverseTrackdir(m_old_td)); |
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m_exitdir = exitdir; |
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m_tiles_skipped = 0; |
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m_is_tunnel = m_is_bridge = m_is_station = false; |
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return true; |
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219 |
} |
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220 |
} |
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221 |
return false; |
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222 |
} |
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223 |
|
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/** return true if we successfully reversed at end of road/track */ |
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FORCEINLINE bool TryReverse() |
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226 |
{ |
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227 |
if (IsRoadTT()) { |
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228 |
// if we reached the end of road, we can reverse the RV and continue moving |
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229 |
m_exitdir = ReverseDiagDir(m_exitdir); |
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230 |
// new tile will be the same as old one |
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231 |
m_new_tile = m_old_tile; |
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232 |
// set new trackdir bits to all reachable trackdirs |
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233 |
QueryNewTileTrackStatus(); |
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m_new_td_bits &= DiagdirReachesTrackdirs(m_exitdir); |
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if (m_new_td_bits != TRACKDIR_BIT_NONE) { |
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236 |
// we have some trackdirs reachable after reversal |
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237 |
return true; |
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238 |
} |
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239 |
} |
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240 |
return false; |
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241 |
} |
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242 |
|
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243 |
public: |
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244 |
/** Helper for pathfinders - get min/max speed on the m_old_tile/m_old_td */ |
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245 |
int GetSpeedLimit(int *pmin_speed = NULL) |
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246 |
{ |
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int min_speed = 0; |
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int max_speed = INT_MAX; // no limit |
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249 |
|
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250 |
// for now we handle only on-bridge speed limit |
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if (!IsWaterTT() && IsBridgeTile(m_old_tile)) { |
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int spd = _bridge[GetBridgeType(m_old_tile)].speed; |
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if (IsRoadTT()) spd *= 2; |
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if (max_speed > spd) max_speed = spd; |
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255 |
} |
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256 |
|
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// if min speed was requested, return it |
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if (pmin_speed) *pmin_speed = min_speed; |
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return max_speed; |
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260 |
} |
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261 |
}; |
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262 |
|
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263 |
typedef CFollowTrackT<TRANSPORT_WATER, true > CFollowTrackWater; |
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typedef CFollowTrackT<TRANSPORT_ROAD , true > CFollowTrackRoad; |
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typedef CFollowTrackT<TRANSPORT_RAIL , true > CFollowTrackRail; |
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266 |
|
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typedef CFollowTrackT<TRANSPORT_WATER, false> CFollowTrackWaterNo90; |
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typedef CFollowTrackT<TRANSPORT_ROAD , false> CFollowTrackRoadNo90; |
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typedef CFollowTrackT<TRANSPORT_RAIL , false> CFollowTrackRailNo90; |
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270 |
|
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271 |
#endif /* FOLLOW_TRACK_HPP */ |