1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file yapf_destrail.hpp Determining the destination for rail vehicles. */
#ifndef YAPF_DESTRAIL_HPP
#define YAPF_DESTRAIL_HPP
class CYapfDestinationRailBase {
protected:
RailTypes m_compatible_railtypes;
public:
void SetDestination(const Train *v, bool override_rail_type = false)
{
m_compatible_railtypes = v->compatible_railtypes;
if (override_rail_type) m_compatible_railtypes |= GetRailTypeInfo(v->railtype)->compatible_railtypes;
}
bool IsCompatibleRailType(RailType rt)
{
return HasBit(m_compatible_railtypes, rt);
}
RailTypes GetCompatibleRailTypes() const
{
return m_compatible_railtypes;
}
};
template <class Types>
class CYapfDestinationAnyDepotRailT : public CYapfDestinationRailBase {
public:
typedef typename Types::Tpf Tpf; ///< the pathfinder class (derived from THIS class)
typedef typename Types::NodeList::Titem Node; ///< this will be our node type
typedef typename Node::Key Key; ///< key to hash tables
/** to access inherited path finder */
Tpf& Yapf()
{
return *static_cast<Tpf *>(this);
}
/** Called by YAPF to detect if node ends in the desired destination */
inline bool PfDetectDestination(Node &n)
{
return PfDetectDestination(n.GetLastTile(), n.GetLastTrackdir());
}
/** Called by YAPF to detect if node ends in the desired destination */
inline bool PfDetectDestination(TileIndex tile, Trackdir td)
{
bool bDest = IsRailDepotTile(tile);
return bDest;
}
/**
* Called by YAPF to calculate cost estimate. Calculates distance to the destination
* adds it to the actual cost from origin and stores the sum to the Node::m_estimate
*/
inline bool PfCalcEstimate(Node &n)
{
n.m_estimate = n.m_cost;
return true;
}
};
template <class Types>
class CYapfDestinationAnySafeTileRailT : public CYapfDestinationRailBase {
public:
typedef typename Types::Tpf Tpf; ///< the pathfinder class (derived from THIS class)
typedef typename Types::NodeList::Titem Node; ///< this will be our node type
typedef typename Node::Key Key; ///< key to hash tables
typedef typename Types::TrackFollower TrackFollower; ///< TrackFollower. Need to typedef for gcc 2.95
/** to access inherited path finder */
Tpf& Yapf()
{
return *static_cast<Tpf *>(this);
}
/** Called by YAPF to detect if node ends in the desired destination */
inline bool PfDetectDestination(Node &n)
{
return PfDetectDestination(n.GetLastTile(), n.GetLastTrackdir());
}
/** Called by YAPF to detect if node ends in the desired destination */
inline bool PfDetectDestination(TileIndex tile, Trackdir td)
{
return IsSafeWaitingPosition(Yapf().GetVehicle(), tile, td, true, !TrackFollower::Allow90degTurns()) &&
IsWaitingPositionFree(Yapf().GetVehicle(), tile, td, !TrackFollower::Allow90degTurns());
}
/**
* Called by YAPF to calculate cost estimate. Calculates distance to the destination
* adds it to the actual cost from origin and stores the sum to the Node::m_estimate.
*/
inline bool PfCalcEstimate(Node &n)
{
n.m_estimate = n.m_cost;
return true;
}
};
template <class Types>
class CYapfDestinationTileOrStationRailT : public CYapfDestinationRailBase {
public:
typedef typename Types::Tpf Tpf; ///< the pathfinder class (derived from THIS class)
typedef typename Types::NodeList::Titem Node; ///< this will be our node type
typedef typename Node::Key Key; ///< key to hash tables
protected:
TileIndex m_destTile;
TrackdirBits m_destTrackdirs;
StationID m_dest_station_id;
/** to access inherited path finder */
Tpf& Yapf()
{
return *static_cast<Tpf *>(this);
}
public:
void SetDestination(const Train *v)
{
switch (v->current_order.GetType()) {
case OT_GOTO_WAYPOINT:
if (!Waypoint::Get(v->current_order.GetDestination())->IsSingleTile()) {
/* In case of 'complex' waypoints we need to do a look
* ahead. This look ahead messes a bit about, which
* means that it 'corrupts' the cache. To prevent this
* we disable caching when we're looking for a complex
* waypoint. */
Yapf().DisableCache(true);
}
FALLTHROUGH;
case OT_GOTO_STATION:
m_destTile = CalcClosestStationTile(v->current_order.GetDestination(), v->tile, v->current_order.IsType(OT_GOTO_STATION) ? STATION_RAIL : STATION_WAYPOINT);
m_dest_station_id = v->current_order.GetDestination();
m_destTrackdirs = INVALID_TRACKDIR_BIT;
break;
default:
m_destTile = v->dest_tile;
m_dest_station_id = INVALID_STATION;
m_destTrackdirs = TrackStatusToTrackdirBits(GetTileTrackStatus(v->dest_tile, TRANSPORT_RAIL, 0));
break;
}
CYapfDestinationRailBase::SetDestination(v);
}
/** Called by YAPF to detect if node ends in the desired destination */
inline bool PfDetectDestination(Node &n)
{
return PfDetectDestination(n.GetLastTile(), n.GetLastTrackdir());
}
/** Called by YAPF to detect if node ends in the desired destination */
inline bool PfDetectDestination(TileIndex tile, Trackdir td)
{
if (m_dest_station_id != INVALID_STATION) {
return HasStationTileRail(tile)
&& (GetStationIndex(tile) == m_dest_station_id)
&& (GetRailStationTrack(tile) == TrackdirToTrack(td));
}
return (tile == m_destTile) && HasTrackdir(m_destTrackdirs, td);
}
/**
* Called by YAPF to calculate cost estimate. Calculates distance to the destination
* adds it to the actual cost from origin and stores the sum to the Node::m_estimate
*/
inline bool PfCalcEstimate(Node &n)
{
static const int dg_dir_to_x_offs[] = {-1, 0, 1, 0};
static const int dg_dir_to_y_offs[] = {0, 1, 0, -1};
if (PfDetectDestination(n)) {
n.m_estimate = n.m_cost;
return true;
}
TileIndex tile = n.GetLastTile();
DiagDirection exitdir = TrackdirToExitdir(n.GetLastTrackdir());
int x1 = 2 * TileX(tile) + dg_dir_to_x_offs[(int)exitdir];
int y1 = 2 * TileY(tile) + dg_dir_to_y_offs[(int)exitdir];
int x2 = 2 * TileX(m_destTile);
int y2 = 2 * TileY(m_destTile);
int dx = abs(x1 - x2);
int dy = abs(y1 - y2);
int dmin = std::min(dx, dy);
int dxy = abs(dx - dy);
int d = dmin * YAPF_TILE_CORNER_LENGTH + (dxy - 1) * (YAPF_TILE_LENGTH / 2);
n.m_estimate = n.m_cost + d;
assert(n.m_estimate >= n.m_parent->m_estimate);
return true;
}
};
#endif /* YAPF_DESTRAIL_HPP */
|
