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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/* $Id$ */
/** @file bridge_map.h */
#ifndef BRIDGE_MAP_H
#define BRIDGE_MAP_H
#include "direction.h"
#include "macros.h"
#include "map.h"
#include "rail.h"
#include "road_map.h"
#include "tile.h"
void DrawBridgeMiddle(const TileInfo* ti); // XXX
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 MayHaveBridgeAbove(TileIndex t)
{
return
IsTileType(t, MP_CLEAR) ||
IsTileType(t, MP_RAILWAY) ||
IsTileType(t, MP_STREET) ||
IsTileType(t, MP_WATER) ||
IsTileType(t, MP_TUNNELBRIDGE) ||
IsTileType(t, MP_UNMOVABLE);
}
static inline bool IsBridgeAbove(TileIndex t)
{
assert(MayHaveBridgeAbove(t));
return GB(_m[t].m6, 6, 2) != 0;
}
/**
* Determines the type of bridge on a tile
* @param tile The tile to analyze
* @return The bridge type
*/
static inline uint GetBridgeType(TileIndex t)
{
assert(IsBridgeTile(t));
return GB(_m[t].m2, 4, 4);
}
/**
* Get the direction pointing onto the bridge
* @param tile The tile to analyze
* @return the above mentionned direction
*/
static inline DiagDirection GetBridgeRampDirection(TileIndex t)
{
assert(IsBridgeTile(t));
return (DiagDirection)GB(_m[t].m5, 0, 2);
}
static inline Axis GetBridgeAxis(TileIndex t)
{
assert(IsBridgeAbove(t));
return (Axis)(GB(_m[t].m6, 6, 2) - 1);
}
static inline TransportType GetBridgeTransportType(TileIndex t)
{
assert(IsBridgeTile(t));
return (TransportType)GB(_m[t].m5, 2, 2);
}
static inline bool HasBridgeSnowOrDesert(TileIndex t)
{
assert(IsBridgeTile(t));
return HASBIT(_m[t].m4, 7);
}
static inline void SetBridgeSnowOrDesert(TileIndex t, bool snow_or_desert)
{
assert(IsBridgeTile(t));
SB(_m[t].m4, 7, 1, snow_or_desert);
}
/**
* Finds the end of a bridge in the specified direction starting at a middle tile
*/
TileIndex GetBridgeEnd(TileIndex, DiagDirection);
/**
* Finds the northern end of a bridge starting at a middle tile
*/
TileIndex GetNorthernBridgeEnd(TileIndex t);
/**
* Finds the southern end of a bridge starting at a middle tile
*/
TileIndex GetSouthernBridgeEnd(TileIndex t);
/**
* Starting at one bridge end finds the other bridge end
*/
TileIndex GetOtherBridgeEnd(TileIndex);
uint GetBridgeHeight(TileIndex tile);
uint GetBridgeFoundation(Slope tileh, Axis axis);
static inline void ClearSingleBridgeMiddle(TileIndex t, Axis a)
{
assert(MayHaveBridgeAbove(t));
CLRBIT(_m[t].m6, 6 + a);
}
static inline void ClearBridgeMiddle(TileIndex t)
{
ClearSingleBridgeMiddle(t, AXIS_X);
ClearSingleBridgeMiddle(t, AXIS_Y);
}
static inline void SetBridgeMiddle(TileIndex t, Axis a)
{
assert(MayHaveBridgeAbove(t));
SETBIT(_m[t].m6, 6 + a);
}
static inline void MakeBridgeRamp(TileIndex t, Owner o, uint bridgetype, DiagDirection d, TransportType tt)
{
SetTileType(t, MP_TUNNELBRIDGE);
SetTileOwner(t, o);
_m[t].m2 = bridgetype << 4;
_m[t].m4 = 0;
_m[t].m5 = 1 << 7 | tt << 2 | d;
}
static inline void MakeRoadBridgeRamp(TileIndex t, Owner o, uint bridgetype, DiagDirection d)
{
MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_ROAD);
_m[t].m3 = 0;
}
static inline void MakeRailBridgeRamp(TileIndex t, Owner o, uint bridgetype, DiagDirection d, RailType r)
{
MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_RAIL);
_m[t].m3 = r;
}
#endif /* BRIDGE_MAP_H */
|
