80814dbb1d
DiagDirections, and add TileOffsByDir that handles Directions. -Codechange: Make the treeloop use TileOffsByDir().
38 lines
613 B
C
38 lines
613 B
C
/* $Id$ */
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#include "stdafx.h"
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#include "openttd.h"
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#include "bridge_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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assert(DiagDirToAxis(dir) == GetBridgeAxis(tile));
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do {
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tile += delta;
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} while (!IsBridgeRamp(tile));
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return tile;
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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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TileIndexDiff delta = TileOffsByDiagDir(GetBridgeRampDirection(tile));
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do {
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tile += delta;
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} while (!IsBridgeRamp(tile));
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return tile;
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}
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