(svn r6601) - Codechange: Support cargo subtypes in the refit window. The refit window has been altered to support resizing and scrolling. Note that the cargo subtype isn't yet passed for actual refitting yet. (Based on mart3p's patch)
/* $Id$ */
#ifndef YAPF_DESTRAIL_HPP
#define YAPF_DESTRAIL_HPP
class CYapfDestinationRailBase
{
protected:
RailTypeMask m_compatible_railtypes;
public:
void SetDestination(Vehicle* v)
{
m_compatible_railtypes = v->u.rail.compatible_railtypes;
}
bool IsCompatibleRailType(RailType rt)
{
return HASBIT(m_compatible_railtypes, rt);
}
};
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 = IsTileDepotType(tile, TRANSPORT_RAIL);
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 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);}
static TileIndex CalcStationCenterTile(StationID station)
{
const Station* st = GetStation(station);
uint x = TileX(st->train_tile) + st->trainst_w / 2;
uint y = TileY(st->train_tile) + st->trainst_h / 2;
// return the tile of our target coordinates
return TileXY(x, y);
}
public:
void SetDestination(Vehicle* v)
{
if (v->current_order.type == OT_GOTO_STATION) {
m_destTile = CalcStationCenterTile(v->current_order.dest);
m_dest_station_id = v->current_order.dest;
m_destTrackdirs = INVALID_TRACKDIR_BIT;
} else {
m_destTile = v->dest_tile;
m_dest_station_id = INVALID_STATION;
m_destTrackdirs = (TrackdirBits)(GetTileTrackStatus(v->dest_tile, TRANSPORT_RAIL) & TRACKDIR_BIT_MASK);
}
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 = IsRailwayStationTile(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 int dg_dir_to_x_offs[] = {-1, 0, 1, 0};
static 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 */