1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
/* $Id$ */
#ifndef BRIDGE_MAP_H
#define BRIDGE_MAP_H
#include "direction.h"
#include "macros.h"
#include "map.h"
#include "rail.h"
#include "tile.h"
/**
* Get the direction pointing onto the bridge
*/
static inline DiagDirection GetBridgeRampDirection(TileIndex 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 void SetClearUnderBridge(TileIndex t)
{
SetTileOwner(t, OWNER_NONE);
SB(_m[t].m5, 3, 3, 0 << 2 | 0);
}
static inline void SetWaterUnderBridge(TileIndex t)
{
SetTileOwner(t, OWNER_WATER);
SB(_m[t].m5, 3, 3, 0 << 2 | 1);
}
static inline void SetRailUnderBridge(TileIndex t, Owner o, RailType r)
{
SetTileOwner(t, o);
SB(_m[t].m5, 3, 3, 1 << 2 | TRANSPORT_RAIL);
SB(_m[t].m3, 0, 4, r);
}
static inline void SetRoadUnderBridge(TileIndex t, Owner o)
{
SetTileOwner(t, o);
SB(_m[t].m5, 3, 3, 1 << 2 | TRANSPORT_ROAD);
}
#endif
|
