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
168
169
|
/* $Id$ */
/** @file ai_bridge.cpp Implementation of AIBridge. */
#include "ai_bridge.hpp"
#include "ai_rail.hpp"
#include "../ai_instance.hpp"
#include "../../bridge_map.h"
#include "../../strings_func.h"
#include "../../core/alloc_func.hpp"
#include "../../economy_func.h"
#include "../../settings_type.h"
#include "../../date_func.h"
/* static */ bool AIBridge::IsValidBridge(BridgeID bridge_id)
{
return bridge_id < MAX_BRIDGES && ::GetBridgeSpec(bridge_id)->avail_year <= _cur_year;
}
/* static */ bool AIBridge::IsBridgeTile(TileIndex tile)
{
if (!::IsValidTile(tile)) return false;
return ::IsBridgeTile(tile);
}
static void _DoCommandReturnBuildBridge2(class AIInstance *instance)
{
if (!AIBridge::_BuildBridgeRoad2()) {
AIObject::SetLastCommandRes(false);
AIInstance::DoCommandReturn(instance);
return;
}
/* This can never happen, as in test-mode this callback is never executed,
* and in execute-mode, the other callback is called. */
NOT_REACHED();
}
static void _DoCommandReturnBuildBridge1(class AIInstance *instance)
{
if (!AIBridge::_BuildBridgeRoad1()) {
AIObject::SetLastCommandRes(false);
AIInstance::DoCommandReturn(instance);
return;
}
/* This can never happen, as in test-mode this callback is never executed,
* and in execute-mode, the other callback is called. */
NOT_REACHED();
}
/* static */ bool AIBridge::BuildBridge(AIVehicle::VehicleType vehicle_type, BridgeID bridge_id, TileIndex start, TileIndex end)
{
EnforcePrecondition(false, start != end);
EnforcePrecondition(false, ::IsValidTile(start) && ::IsValidTile(end));
EnforcePrecondition(false, TileX(start) == TileX(end) || TileY(start) == TileY(end));
EnforcePrecondition(false, vehicle_type == AIVehicle::VT_ROAD || vehicle_type == AIVehicle::VT_RAIL || vehicle_type == AIVehicle::VT_WATER);
EnforcePrecondition(false, vehicle_type != AIVehicle::VT_RAIL || AIRail::IsRailTypeAvailable(AIRail::GetCurrentRailType()));
uint type = 0;
switch (vehicle_type) {
case AIVehicle::VT_ROAD:
type |= (TRANSPORT_ROAD << 15);
type |= (RoadTypeToRoadTypes((::RoadType)AIObject::GetRoadType()) << 8);
break;
case AIVehicle::VT_RAIL:
type |= (TRANSPORT_RAIL << 15);
type |= (AIRail::GetCurrentRailType() << 8);
break;
case AIVehicle::VT_WATER:
type |= (TRANSPORT_WATER << 15);
break;
default: NOT_REACHED();
}
/* For rail and water we do nothing special */
if (vehicle_type == AIVehicle::VT_RAIL || vehicle_type == AIVehicle::VT_WATER) {
return AIObject::DoCommand(end, start, type | bridge_id, CMD_BUILD_BRIDGE);
}
AIObject::SetCallbackVariable(0, start);
AIObject::SetCallbackVariable(1, end);
if (!AIObject::DoCommand(end, start, type | bridge_id, CMD_BUILD_BRIDGE, NULL, &_DoCommandReturnBuildBridge1)) return false;
/* In case of test-mode, test if we can build both road pieces */
return _BuildBridgeRoad1();
}
/* static */ bool AIBridge::_BuildBridgeRoad1()
{
/* Build the piece of road on the 'start' side of the bridge */
TileIndex end = AIObject::GetCallbackVariable(0);
TileIndex start = AIObject::GetCallbackVariable(1);
DiagDirection dir_1 = ::DiagdirBetweenTiles(end, start);
DiagDirection dir_2 = ::ReverseDiagDir(dir_1);
if (!AIObject::DoCommand(start + ::TileOffsByDiagDir(dir_1), ::DiagDirToRoadBits(dir_2) | (AIObject::GetRoadType() << 4), 0, CMD_BUILD_ROAD, NULL, &_DoCommandReturnBuildBridge2)) return false;
/* In case of test-mode, test the other road piece too */
return _BuildBridgeRoad2();
}
/* static */ bool AIBridge::_BuildBridgeRoad2()
{
/* Build the piece of road on the 'end' side of the bridge */
TileIndex end = AIObject::GetCallbackVariable(0);
TileIndex start = AIObject::GetCallbackVariable(1);
DiagDirection dir_1 = ::DiagdirBetweenTiles(end, start);
DiagDirection dir_2 = ::ReverseDiagDir(dir_1);
return AIObject::DoCommand(end + ::TileOffsByDiagDir(dir_2), ::DiagDirToRoadBits(dir_1) | (AIObject::GetRoadType() << 4), 0, CMD_BUILD_ROAD);
}
/* static */ bool AIBridge::RemoveBridge(TileIndex tile)
{
EnforcePrecondition(false, IsBridgeTile(tile));
return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);
}
/* static */ char *AIBridge::GetName(BridgeID bridge_id)
{
if (!IsValidBridge(bridge_id)) return NULL;
static const int len = 64;
char *bridge_name = MallocT<char>(len);
::GetString(bridge_name, ::GetBridgeSpec(bridge_id)->transport_name[0], &bridge_name[len - 1]);
return bridge_name;
}
/* static */ int32 AIBridge::GetMaxSpeed(BridgeID bridge_id)
{
if (!IsValidBridge(bridge_id)) return -1;
return ::GetBridgeSpec(bridge_id)->speed; // km-ish/h
}
/* static */ Money AIBridge::GetPrice(BridgeID bridge_id, uint length)
{
if (!IsValidBridge(bridge_id)) return -1;
return length * _price.build_bridge * ::GetBridgeSpec(bridge_id)->price >> 8;
}
/* static */ int32 AIBridge::GetMaxLength(BridgeID bridge_id)
{
if (!IsValidBridge(bridge_id)) return -1;
uint max = ::GetBridgeSpec(bridge_id)->max_length;
if (max >= 16 && _settings_game.construction.longbridges) max = 100;
return max + 2;
}
/* static */ int32 AIBridge::GetMinLength(BridgeID bridge_id)
{
if (!IsValidBridge(bridge_id)) return -1;
return ::GetBridgeSpec(bridge_id)->min_length + 2;
}
/* static */ TileIndex AIBridge::GetOtherBridgeEnd(TileIndex tile)
{
if (!::IsValidTile(tile)) return INVALID_TILE;
if (!IsBridgeTile(tile)) return INVALID_TILE;
return ::GetOtherBridgeEnd(tile);
}
|
