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/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "variables.h"
TileIndex GetBridgeEnd(TileIndex tile, DiagDirection dir)
{
TileIndexDiff delta = TileOffsByDir(dir);
do { tile += delta; } while (IsBridgeAbove(tile) && IsBridgeOfAxis(tile, DiagDirToAxis(dir)));
return tile;
}
TileIndex GetNorthernBridgeEnd(TileIndex t)
{
return GetBridgeEnd(t, ReverseDiagDir(AxisToDiagDir(GetBridgeAxis(t))));
}
TileIndex GetSouthernBridgeEnd(TileIndex t)
{
return GetBridgeEnd(t, AxisToDiagDir(GetBridgeAxis(t)));
}
TileIndex GetOtherBridgeEnd(TileIndex tile)
{
assert(IsBridgeTile(tile));
return GetBridgeEnd(tile, GetBridgeRampDirection(tile));
}
uint GetBridgeHeight(TileIndex tile, Axis a)
{
uint h, f;
uint tileh = GetTileSlope(tile, &h);
f = GetBridgeFoundation(tileh, a);
if (f) {
if (f < 15) {
h += TILE_HEIGHT;
tileh = SLOPE_FLAT;
} else {
tileh = _inclined_tileh[f - 15];
}
}
return h + TILE_HEIGHT;
}
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