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