(svn r5046) - Implement smooth horizontal depot scrolling by setting up a clipping area to draw the train image. This fixes a couple of usability issues when shorter wagons are used in the depot; shorter wagons scrolled at a different speed, and not all wagons were visible sometimes.
/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
TileIndex GetBridgeEnd(TileIndex tile, DiagDirection dir)
{
TileIndexDiff delta = TileOffsByDir(dir);
assert(DiagDirToAxis(dir) == GetBridgeAxis(tile));
do {
tile += delta;
} while (!IsBridgeRamp(tile));
return tile;
}
TileIndex GetSouthernBridgeEnd(TileIndex t)
{
return GetBridgeEnd(t, AxisToDiagDir(GetBridgeAxis(t)));
}
TileIndex GetOtherBridgeEnd(TileIndex tile)
{
TileIndexDiff delta = TileOffsByDir(GetBridgeRampDirection(tile));
do {
tile += delta;
} while (!IsBridgeRamp(tile));
return tile;
}