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Location: cpp/openttd-patchpack/source/src/tunnel_map.h
r7582:dfefb1216e6f
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(svn r11107) -Feature: some tool so one can still build tunnels under rails (and other structures) when the owner of the structure built it on foundations and if you have enough "empty" space ofcourse. One could use the tool for some other construction needs too. Patch by frosch.
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/** @file tunnel_map.h */
#ifndef TUNNEL_MAP_H
#define TUNNEL_MAP_H
#include "direction.h"
#include "macros.h"
#include "map.h"
#include "rail.h"
#include "road.h"
/**
* Is this a tunnel (entrance)?
* @param t the tile that might be a tunnel
* @pre IsTileType(t, MP_TUNNELBRIDGE)
* @return true if and only if this tile is a tunnel (entrance)
*/
static inline bool IsTunnel(TileIndex t)
{
assert(IsTileType(t, MP_TUNNELBRIDGE));
return !HASBIT(_m[t].m5, 7);
}
/**
* Is this a tunnel (entrance)?
* @param t the tile that might be a tunnel
* @return true if and only if this tile is a tunnel (entrance)
*/
static inline bool IsTunnelTile(TileIndex t)
{
return IsTileType(t, MP_TUNNELBRIDGE) && IsTunnel(t);
}
/**
* Gets the direction facing out of the tunnel
* @param t the tile to get the tunnel facing direction of
* @pre IsTunnelTile(t)
* @return the direction the tunnel is facing
*/
static inline DiagDirection GetTunnelDirection(TileIndex t)
{
assert(IsTunnelTile(t));
return (DiagDirection)GB(_m[t].m5, 0, 2);
}
/**
* Gets the transport type of the tunnel (road or rail)
* @param t the tunnel entrance tile to get the type of
* @pre IsTunnelTile(t)
* @return the transport type in the tunnel
*/
static inline TransportType GetTunnelTransportType(TileIndex t)
{
assert(IsTunnelTile(t));
return (TransportType)GB(_m[t].m5, 2, 2);
}
/**
* Is this tunnel entrance in a snowy or desert area?
* @param t the tunnel entrance tile
* @pre IsTunnelTile(t)
* @return true if and only if the tunnel entrance is in a snowy/desert area
*/
static inline bool HasTunnelSnowOrDesert(TileIndex t)
{
assert(IsTunnelTile(t));
return HASBIT(_m[t].m4, 7);
}
/**
* Places this tunnel entrance in a snowy or desert area,
* or takes it out of there.
* @param t the tunnel entrance tile
* @param snow_or_desert is the entrance in snow or desert (true), when
* not in snow and not in desert false
* @pre IsTunnelTile(t)
*/
static inline void SetTunnelSnowOrDesert(TileIndex t, bool snow_or_desert)
{
assert(IsTunnelTile(t));
SB(_m[t].m4, 7, 1, snow_or_desert);
}
TileIndex GetOtherTunnelEnd(TileIndex);
bool IsTunnelInWay(TileIndex, uint z);
bool IsTunnelInWayDir(TileIndex tile, uint z, DiagDirection dir);
/**
* Makes a road tunnel entrance
* @param t the entrance of the tunnel
* @param o the owner of the entrance
* @param d the direction facing out of the tunnel
* @param r the road type used in the tunnel
*/
static inline void MakeRoadTunnel(TileIndex t, Owner o, DiagDirection d, RoadTypes r)
{
SetTileType(t, MP_TUNNELBRIDGE);
SetTileOwner(t, o);
_m[t].m2 = 0;
_m[t].m3 = r;
_m[t].m4 = 0;
_m[t].m5 = TRANSPORT_ROAD << 2 | d;
}
/**
* Makes a rail tunnel entrance
* @param t the entrance of the tunnel
* @param o the owner of the entrance
* @param d the direction facing out of the tunnel
* @param r the rail type used in the tunnel
*/
static inline void MakeRailTunnel(TileIndex t, Owner o, DiagDirection d, RailType r)
{
SetTileType(t, MP_TUNNELBRIDGE);
SetTileOwner(t, o);
_m[t].m2 = 0;
_m[t].m3 = r;
_m[t].m4 = 0;
_m[t].m5 = TRANSPORT_RAIL << 2 | d;
}
#endif /* TUNNEL_MAP_H */
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