51 lines
1.0 KiB
C++
51 lines
1.0 KiB
C++
/* $Id$ */
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/** @file bridge_map.cpp Map accessor functions for bridges. */
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#include "stdafx.h"
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#include "bridge_map.h"
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#include "landscape.h"
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#include "tunnelbridge_map.h"
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TileIndex GetBridgeEnd(TileIndex tile, DiagDirection dir)
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{
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TileIndexDiff delta = TileOffsByDiagDir(dir);
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dir = ReverseDiagDir(dir);
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do {
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tile += delta;
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} while (!IsBridgeTile(tile) || GetTunnelBridgeDirection(tile) != dir);
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return tile;
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}
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TileIndex GetNorthernBridgeEnd(TileIndex t)
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{
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return GetBridgeEnd(t, ReverseDiagDir(AxisToDiagDir(GetBridgeAxis(t))));
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}
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TileIndex GetSouthernBridgeEnd(TileIndex t)
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{
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return GetBridgeEnd(t, AxisToDiagDir(GetBridgeAxis(t)));
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}
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TileIndex GetOtherBridgeEnd(TileIndex tile)
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{
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assert(IsBridgeTile(tile));
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return GetBridgeEnd(tile, GetTunnelBridgeDirection(tile));
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}
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uint GetBridgeHeight(TileIndex t)
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{
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uint h;
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Slope tileh = GetTileSlope(t, &h);
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Foundation f = GetBridgeFoundation(tileh, DiagDirToAxis(GetTunnelBridgeDirection(t)));
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/* one height level extra for the ramp */
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return h + TILE_HEIGHT + ApplyFoundationToSlope(f, &tileh);
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}
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