author | glx |
Sat, 13 Jan 2007 21:28:46 +0000 | |
changeset 5652 | c26cb37e4ef4 |
parent 5475 | 2e6990a8c7c4 |
child 6121 | 2aae24b0881f |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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#ifndef YAPF_DESTRAIL_HPP |
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#define YAPF_DESTRAIL_HPP |
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class CYapfDestinationRailBase |
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{ |
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protected: |
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RailTypeMask m_compatible_railtypes; |
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public: |
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void SetDestination(Vehicle* v) |
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{ |
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m_compatible_railtypes = v->u.rail.compatible_railtypes; |
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} |
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bool IsCompatibleRailType(RailType rt) |
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{ |
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return HASBIT(m_compatible_railtypes, rt); |
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} |
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}; |
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template <class Types> |
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class CYapfDestinationAnyDepotRailT |
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: public CYapfDestinationRailBase |
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{ |
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public: |
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typedef typename Types::Tpf Tpf; ///< the pathfinder class (derived from THIS class) |
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typedef typename Types::NodeList::Titem Node; ///< this will be our node type |
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typedef typename Node::Key Key; ///< key to hash tables |
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/// to access inherited path finder |
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Tpf& Yapf() {return *static_cast<Tpf*>(this);} |
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/// Called by YAPF to detect if node ends in the desired destination |
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FORCEINLINE bool PfDetectDestination(Node& n) |
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{ |
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return PfDetectDestination(n.GetLastTile(), n.GetLastTrackdir()); |
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} |
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/// Called by YAPF to detect if node ends in the desired destination |
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FORCEINLINE bool PfDetectDestination(TileIndex tile, Trackdir td) |
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{ |
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bool bDest = IsTileDepotType(tile, TRANSPORT_RAIL); |
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return bDest; |
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} |
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/** Called by YAPF to calculate cost estimate. Calculates distance to the destination |
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* adds it to the actual cost from origin and stores the sum to the Node::m_estimate */ |
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FORCEINLINE bool PfCalcEstimate(Node& n) |
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{ |
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n.m_estimate = n.m_cost; |
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return true; |
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} |
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}; |
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template <class Types> |
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class CYapfDestinationTileOrStationRailT |
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: public CYapfDestinationRailBase |
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{ |
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public: |
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typedef typename Types::Tpf Tpf; ///< the pathfinder class (derived from THIS class) |
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typedef typename Types::NodeList::Titem Node; ///< this will be our node type |
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typedef typename Node::Key Key; ///< key to hash tables |
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protected: |
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TileIndex m_destTile; |
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TrackdirBits m_destTrackdirs; |
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StationID m_dest_station_id; |
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/// to access inherited path finder |
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Tpf& Yapf() {return *static_cast<Tpf*>(this);} |
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static TileIndex CalcStationCenterTile(StationID station) |
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{ |
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const Station* st = GetStation(station); |
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uint x = TileX(st->train_tile) + st->trainst_w / 2; |
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uint y = TileY(st->train_tile) + st->trainst_h / 2; |
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// return the tile of our target coordinates |
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return TileXY(x, y); |
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} |
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public: |
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void SetDestination(Vehicle* v) |
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{ |
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if (v->current_order.type == OT_GOTO_STATION) { |
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m_destTile = CalcStationCenterTile(v->current_order.dest); |
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m_dest_station_id = v->current_order.dest; |
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m_destTrackdirs = INVALID_TRACKDIR_BIT; |
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} else { |
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m_destTile = v->dest_tile; |
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m_dest_station_id = INVALID_STATION; |
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m_destTrackdirs = (TrackdirBits)(GetTileTrackStatus(v->dest_tile, TRANSPORT_RAIL) & TRACKDIR_BIT_MASK); |
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} |
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CYapfDestinationRailBase::SetDestination(v); |
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} |
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/// Called by YAPF to detect if node ends in the desired destination |
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FORCEINLINE bool PfDetectDestination(Node& n) |
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{ |
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return PfDetectDestination(n.GetLastTile(), n.GetLastTrackdir()); |
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} |
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/// Called by YAPF to detect if node ends in the desired destination |
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FORCEINLINE bool PfDetectDestination(TileIndex tile, Trackdir td) |
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{ |
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108 |
bool bDest; |
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109 |
if (m_dest_station_id != INVALID_STATION) { |
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bDest = IsRailwayStationTile(tile) |
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&& (GetStationIndex(tile) == m_dest_station_id) |
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&& (GetRailStationTrack(tile) == TrackdirToTrack(td)); |
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113 |
} else { |
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114 |
bDest = (tile == m_destTile) |
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&& ((m_destTrackdirs & TrackdirToTrackdirBits(td)) != TRACKDIR_BIT_NONE); |
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116 |
} |
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117 |
return bDest; |
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118 |
} |
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119 |
|
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/** Called by YAPF to calculate cost estimate. Calculates distance to the destination |
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* adds it to the actual cost from origin and stores the sum to the Node::m_estimate */ |
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122 |
FORCEINLINE bool PfCalcEstimate(Node& n) |
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123 |
{ |
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124 |
static int dg_dir_to_x_offs[] = {-1, 0, 1, 0}; |
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static int dg_dir_to_y_offs[] = {0, 1, 0, -1}; |
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126 |
if (PfDetectDestination(n)) { |
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127 |
n.m_estimate = n.m_cost; |
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128 |
return true; |
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129 |
} |
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130 |
|
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131 |
TileIndex tile = n.GetLastTile(); |
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132 |
DiagDirection exitdir = TrackdirToExitdir(n.GetLastTrackdir()); |
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133 |
int x1 = 2 * TileX(tile) + dg_dir_to_x_offs[(int)exitdir]; |
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int y1 = 2 * TileY(tile) + dg_dir_to_y_offs[(int)exitdir]; |
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135 |
int x2 = 2 * TileX(m_destTile); |
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136 |
int y2 = 2 * TileY(m_destTile); |
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137 |
int dx = abs(x1 - x2); |
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138 |
int dy = abs(y1 - y2); |
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139 |
int dmin = min(dx, dy); |
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int dxy = abs(dx - dy); |
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int d = dmin * YAPF_TILE_CORNER_LENGTH + (dxy - 1) * (YAPF_TILE_LENGTH / 2); |
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142 |
n.m_estimate = n.m_cost + d; |
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143 |
assert(n.m_estimate >= n.m_parent->m_estimate); |
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144 |
return true; |
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145 |
} |
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146 |
}; |
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147 |
|
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148 |
|
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149 |
#endif /* YAPF_DESTRAIL_HPP */ |