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Location: cpp/openttd-patchpack/source/src/bridge_map.cpp

r6888:f2ab5d0e6596 1.1 KiB text/x-c Show Annotation Show as Raw Download as Raw

rubidium

(svn r10131) -Fix [FS#810]: when removing a dock, a ship will always try to reach the old location of the dock even when it cannot anymore because it the old location of the dock is now land instead of water.

/* $Id$ */

/** @file bridge_map.cpp Map accessor functions for bridges. */

#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "bridge.h"
#include "variables.h"


TileIndex GetBridgeEnd(TileIndex tile, DiagDirection dir)
{
	TileIndexDiff delta = TileOffsByDiagDir(dir);

	dir = ReverseDiagDir(dir);
	do {
		tile += delta;
	} while (!IsBridgeTile(tile) || GetBridgeRampDirection(tile) != 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 t)
{
	uint h;
	Slope tileh = GetTileSlope(t, &h);
	uint f = GetBridgeFoundation(tileh, DiagDirToAxis(GetBridgeRampDirection(t)));

	/* one height level extra if the ramp is on a flat foundation */
	return
		h + TILE_HEIGHT +
		(IS_INT_INSIDE(f, 1, 15) ? TILE_HEIGHT : 0) +
		(IsSteepSlope(tileh) ? TILE_HEIGHT : 0);
}