mirror of https://github.com/OpenTTD/OpenTTD.git
65 lines
1.1 KiB
C
65 lines
1.1 KiB
C
/* $Id$ */
|
|
|
|
#ifndef BRIDGE_MAP_H
|
|
#define BRIDGE_MAP_H
|
|
|
|
#include "direction.h"
|
|
#include "macros.h"
|
|
#include "map.h"
|
|
#include "rail.h"
|
|
#include "tile.h"
|
|
|
|
|
|
static inline bool IsBridge(TileIndex t)
|
|
{
|
|
assert(IsTileType(t, MP_TUNNELBRIDGE));
|
|
return HASBIT(_m[t].m5, 7);
|
|
}
|
|
|
|
static inline bool IsBridgeTile(TileIndex t)
|
|
{
|
|
return IsTileType(t, MP_TUNNELBRIDGE) && IsBridge(t);
|
|
}
|
|
|
|
|
|
static inline bool IsBridgeRamp(TileIndex t)
|
|
{
|
|
assert(IsBridgeTile(t));
|
|
return !HASBIT(_m[t].m5, 6);
|
|
}
|
|
|
|
static inline bool IsBridgeMiddle(TileIndex t)
|
|
{
|
|
assert(IsBridgeTile(t));
|
|
return HASBIT(_m[t].m5, 6);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the direction pointing onto the bridge
|
|
*/
|
|
static inline DiagDirection GetBridgeRampDirection(TileIndex t)
|
|
{
|
|
assert(IsBridgeRamp(t));
|
|
/* Heavy wizardry to convert the X/Y (bit 0) + N/S (bit 5) encoding of
|
|
* bridges to a DiagDirection
|
|
*/
|
|
return (DiagDirection)((6 - (_m[t].m5 >> 4 & 2) - (_m[t].m5 & 1)) % 4);
|
|
}
|
|
|
|
|
|
static inline Axis GetBridgeAxis(TileIndex t)
|
|
{
|
|
assert(IsBridgeMiddle(t));
|
|
return (Axis)GB(_m[t].m5, 0, 1);
|
|
}
|
|
|
|
|
|
static inline bool IsTransportUnderBridge(TileIndex t)
|
|
{
|
|
assert(IsBridgeMiddle(t));
|
|
return HASBIT(_m[t].m5, 5);
|
|
}
|
|
|
|
#endif
|