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
|
/* $Id$ */
#ifndef DEPOT_H
#define DEPOT_H
/** @file depot.h Header files for depots (not hangars)
* @see depot.c */
#include "pool.h"
#include "tile.h"
#include "variables.h"
struct Depot {
TileIndex xy;
uint16 town_index;
uint16 index;
};
extern MemoryPool _depot_pool;
/**
* Get the pointer to the depot with index 'index'
*/
static inline Depot *GetDepot(uint index)
{
return (Depot*)GetItemFromPool(&_depot_pool, index);
}
/**
* Get the current size of the DepotPool
*/
static inline uint16 GetDepotPoolSize(void)
{
return _depot_pool.total_items;
}
static inline bool IsDepotIndex(uint index)
{
return index < GetDepotPoolSize();
}
#define FOR_ALL_DEPOTS_FROM(d, start) for (d = GetDepot(start); d != NULL; d = (d->index + 1 < GetDepotPoolSize()) ? GetDepot(d->index + 1) : NULL)
#define FOR_ALL_DEPOTS(d) FOR_ALL_DEPOTS_FROM(d, 0)
#define MIN_SERVINT_PERCENT 5
#define MAX_SERVINT_PERCENT 90
#define MIN_SERVINT_DAYS 30
#define MAX_SERVINT_DAYS 800
/** Get the service interval domain.
* Get the new proposed service interval for the vehicle is indeed, clamped
* within the given bounds. @see MIN_SERVINT_PERCENT ,etc.
* @param index proposed service interval
*/
static inline uint16 GetServiceIntervalClamped(uint index)
{
return (_patches.servint_ispercent) ? clamp(index, MIN_SERVINT_PERCENT, MAX_SERVINT_PERCENT) : clamp(index, MIN_SERVINT_DAYS, MAX_SERVINT_DAYS);
}
VARDEF TileIndex _last_built_train_depot_tile;
VARDEF TileIndex _last_built_road_depot_tile;
VARDEF TileIndex _last_built_aircraft_depot_tile;
VARDEF TileIndex _last_built_ship_depot_tile;
/**
* Check if a depot really exists.
*/
static inline bool IsValidDepot(const Depot* depot)
{
return depot->xy != 0; /* XXX: Replace by INVALID_TILE someday */
}
/**
* Check if a tile is a depot of the given type.
*/
static inline bool IsTileDepotType(TileIndex tile, TransportType type)
{
switch(type)
{
case TRANSPORT_RAIL:
return IsTileType(tile, MP_RAILWAY) && (_m[tile].m5 & 0xFC) == 0xC0;
case TRANSPORT_ROAD:
return IsTileType(tile, MP_STREET) && (_m[tile].m5 & 0xF0) == 0x20;
case TRANSPORT_WATER:
return IsTileType(tile, MP_WATER) && (_m[tile].m5 & ~3) == 0x80;
default:
assert(0);
return false;
}
}
/**
* Returns the direction the exit of the depot on the given tile is facing.
*/
static inline DiagDirection GetDepotDirection(TileIndex tile, TransportType type)
{
assert(IsTileDepotType(tile, type));
switch (type)
{
case TRANSPORT_RAIL:
case TRANSPORT_ROAD:
/* Rail and road store a diagonal direction in bits 0 and 1 */
return (DiagDirection)(_m[tile].m5 & 3);
case TRANSPORT_WATER:
/* Water is stubborn, it stores the directions in a different order. */
switch (_m[tile].m5 & 3) {
case 0: return DIAGDIR_NE;
case 1: return DIAGDIR_SW;
case 2: return DIAGDIR_NW;
case 3: return DIAGDIR_SE;
}
default:
return INVALID_DIAGDIR; /* Not reached */
}
}
/**
Find out if the slope of the tile is suitable to build a depot of given direction
@param direction The direction in which the depot's exit points. Starts with 0 as NE and goes Clockwise
@param tileh The slope of the tile in question
@return true if the construction is possible
This is checked by the ugly 0x4C >> direction magic, which does the following:
0x4C is 0100 1100 and tileh has only bits 0..3 set (steep tiles are ruled out)
So: for direction (only the significant bits are shown)<p>
00 (exit towards NE) we need either bit 2 or 3 set in tileh: 0x4C >> 0 = 1100<p>
01 (exit towards SE) we need either bit 1 or 2 set in tileh: 0x4C >> 1 = 0110<p>
02 (exit towards SW) we need either bit 0 or 1 set in tileh: 0x4C >> 2 = 0011<p>
03 (exit towards NW) we need either bit 0 or 4 set in tileh: 0x4C >> 3 = 1001<p>
So ((0x4C >> p2) & tileh) determines whether the depot can be built on the current tileh
*/
static inline bool CanBuildDepotByTileh(uint32 direction, uint tileh)
{
return (0x4C >> direction) & tileh;
}
Depot *GetDepotByTile(TileIndex tile);
void InitializeDepot(void);
Depot *AllocateDepot(void);
void DoDeleteDepot(TileIndex tile);
#endif /* DEPOT_H */
|
