38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
/* $Id$ */
|
|
|
|
#ifndef YAPF_COSTBASE_HPP
|
|
#define YAPF_COSTBASE_HPP
|
|
|
|
struct CYapfCostBase {
|
|
static const TrackdirBits c_upwards_slopes[16];
|
|
|
|
FORCEINLINE static bool stSlopeCost(TileIndex tile, Trackdir td)
|
|
{
|
|
if (IsDiagonalTrackdir(td)) {
|
|
if (IsBridgeTile(tile) && IsBridgeRamp(tile)) {
|
|
// it is bridge ramp, check if we are entering the bridge
|
|
if (GetBridgeRampDirection(tile) != TrackdirToExitdir(td)) return false; // no, we are living it, no penalty
|
|
// we are entering the bridge
|
|
// if the tile slope is downwards, then bridge ramp has not upward slope
|
|
uint tile_slope = GetTileSlope(tile, NULL) & 0x0F;
|
|
if ((c_upwards_slopes[tile_slope] & TrackdirToTrackdirBits(ReverseTrackdir(td))) != 0) return false; // tile under ramp goes down, no penalty
|
|
// tile under ramp isn't going down, so ramp must go up
|
|
return true;
|
|
} else {
|
|
// not bridge ramp
|
|
if (IsTunnelTile(tile)) return false; // tunnel entry/exit doesn't slope
|
|
uint tile_slope = GetTileSlope(tile, NULL) & 0x0F;
|
|
if ((c_upwards_slopes[tile_slope] & TrackdirToTrackdirBits(td)) != 0) return true; // slopes uphill => apply penalty
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
};
|
|
|
|
struct CostRailSettings {
|
|
// look-ahead signal penalty
|
|
};
|
|
|
|
|
|
#endif /* YAPF_COSTBASE_HPP */
|