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Location: cpp/openttd-patchpack/source/src/yapf/yapf_destrail.hpp - annotation
r13363:e6595eacdb90
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(svn r17882) -Codechange: make the code to draw the details in the server list a seperate function and remove some magic numbers
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/*
* 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 Vehicle *v, bool override_rail_type = false)
{
m_compatible_railtypes = Train::From(v)->compatible_railtypes;
if (override_rail_type) m_compatible_railtypes |= GetRailTypeInfo(Train::From(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 */
FORCEINLINE bool PfDetectDestination(Node& n)
{
return PfDetectDestination(n.GetLastTile(), n.GetLastTrackdir());
}
/** Called by YAPF to detect if node ends in the desired destination */
FORCEINLINE 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 */
FORCEINLINE 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 */
FORCEINLINE bool PfDetectDestination(Node& n)
{
return PfDetectDestination(n.GetLastTile(), n.GetLastTrackdir());
}
/** Called by YAPF to detect if node ends in the desired destination */
FORCEINLINE bool PfDetectDestination(TileIndex tile, Trackdir td)
{
return
IsSafeWaitingPosition(Train::From(Yapf().GetVehicle()), tile, td, true, !TrackFollower::Allow90degTurns()) &&
IsWaitingPositionFree(Train::From(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. */
FORCEINLINE 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 Vehicle *v)
{
switch (v->current_order.GetType()) {
case OT_GOTO_STATION:
case OT_GOTO_WAYPOINT:
m_destTile = CalcClosestStationTile(v->current_order.GetDestination(), v->tile);
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 */
FORCEINLINE bool PfDetectDestination(Node& n)
{
return PfDetectDestination(n.GetLastTile(), n.GetLastTrackdir());
}
/** Called by YAPF to detect if node ends in the desired destination */
FORCEINLINE bool PfDetectDestination(TileIndex tile, Trackdir td)
{
bool bDest;
if (m_dest_station_id != INVALID_STATION) {
bDest = HasStationTileRail(tile)
&& (GetStationIndex(tile) == m_dest_station_id)
&& (GetRailStationTrack(tile) == TrackdirToTrack(td));
} else {
bDest = (tile == m_destTile)
&& ((m_destTrackdirs & TrackdirToTrackdirBits(td)) != TRACKDIR_BIT_NONE);
}
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 */
FORCEINLINE 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 = 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 */
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