src/tunnel_map.cpp
author truelight
Thu, 08 Feb 2007 12:27:53 +0000
changeset 6210 717cc12ac0a9
parent 5835 e0ff603ae0b7
child 6307 f40e88cff863
child 6719 4cc327ad39d5
permissions -rw-r--r--
(svn r8631) -Add: added parameter -l ip[:port] to ./openttd, which redirects DEBUG() to a remote connection over TCP
For example, launch on 192.168.0.1 with, say, netcat a listener: netcat -l -p 3982
Launch OpenTTD on a remote host (say, PSP): ./openttd -l 192.168.0.1 -d9
And you get all debug information on 192.168.0.1. Very useful for debugging Portable systems.
/* $Id$ */

#include "stdafx.h"
#include "openttd.h"
#include "tile.h"
#include "tunnel_map.h"

TileIndex GetOtherTunnelEnd(TileIndex tile)
{
	DiagDirection dir = GetTunnelDirection(tile);
	TileIndexDiff delta = TileOffsByDiagDir(dir);
	uint z = GetTileZ(tile);

	dir = ReverseDiagDir(dir);
	do {
		tile += delta;
	} while (
		!IsTunnelTile(tile) ||
		GetTunnelDirection(tile) != dir ||
		GetTileZ(tile) != z
	);

	return tile;
}


static bool IsTunnelInWayDir(TileIndex tile, uint z, DiagDirection dir)
{
	TileIndexDiff delta = TileOffsByDiagDir(dir);
	uint height;

	do {
		tile -= delta;
		height = GetTileZ(tile);
	} while (z < height);

	return
		z == height &&
		IsTunnelTile(tile) &&
		GetTunnelDirection(tile) == dir;
}

bool IsTunnelInWay(TileIndex tile, uint z)
{
	return
		IsTunnelInWayDir(tile, z, DIAGDIR_NE) ||
		IsTunnelInWayDir(tile, z, DIAGDIR_SE) ||
		IsTunnelInWayDir(tile, z, DIAGDIR_SW) ||
		IsTunnelInWayDir(tile, z, DIAGDIR_NW);
}