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Location: cpp/openttd-patchpack/source/src/tunnel_map.cpp - annotation
r8781:bd977c904a17
1.6 KiB
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(svn r12482) -Fix: [build train] we don't need to have a depot in order to just check the price of a rail vehicle so don't check for compatible rails on the tile either
also wagons will only need tracks they can drive on in order to be build so there is no reason to check for power in the depot
also wagons will only need tracks they can drive on in order to be build so there is no reason to check for power in the depot
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/** @file tunnel_map.cpp */
#include "stdafx.h"
#include "openttd.h"
#include "tunnel_map.h"
#include "tunnelbridge_map.h"
/**
* Gets the other end of the tunnel. Where a vehicle would reappear when it
* enters at the given tile.
* @param tile the tile to search from.
* @return the tile of the other end of the tunnel.
*/
TileIndex GetOtherTunnelEnd(TileIndex tile)
{
DiagDirection dir = GetTunnelBridgeDirection(tile);
TileIndexDiff delta = TileOffsByDiagDir(dir);
uint z = GetTileZ(tile);
dir = ReverseDiagDir(dir);
do {
tile += delta;
} while (
!IsTunnelTile(tile) ||
GetTunnelBridgeDirection(tile) != dir ||
GetTileZ(tile) != z
);
return tile;
}
/**
* Is there a tunnel in the way in the given direction?
* @param tile the tile to search from.
* @param z the 'z' to search on.
* @param dir the direction to start searching to.
* @return true if and only if there is a tunnel.
*/
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) &&
GetTunnelBridgeDirection(tile) == dir;
}
/**
* Is there a tunnel in the way in any direction?
* @param tile the tile to search from.
* @param z the 'z' to search on.
* @return true if and only if there is a tunnel.
*/
bool IsTunnelInWay(TileIndex tile, uint z)
{
return
IsTunnelInWayDir(tile, z, (TileX(tile) > (MapMaxX() / 2)) ? DIAGDIR_NE : DIAGDIR_SW) ||
IsTunnelInWayDir(tile, z, (TileY(tile) > (MapMaxY() / 2)) ? DIAGDIR_NW : DIAGDIR_SE);
}
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