SUMO - Simulation of Urban MObility
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MSTrafficLightLogic.cpp
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1 /****************************************************************************/
9 // The parent class for traffic light logics
10 /****************************************************************************/
11 // SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
12 // Copyright (C) 2001-2012 DLR (http://www.dlr.de/) and contributors
13 /****************************************************************************/
14 //
15 // This file is part of SUMO.
16 // SUMO is free software: you can redistribute it and/or modify
17 // it under the terms of the GNU General Public License as published by
18 // the Free Software Foundation, either version 3 of the License, or
19 // (at your option) any later version.
20 //
21 /****************************************************************************/
22 
23 
24 // ===========================================================================
25 // included modules
26 // ===========================================================================
27 #ifdef _MSC_VER
28 #include <windows_config.h>
29 #else
30 #include <config.h>
31 #endif
32 
33 #include <cassert>
34 #include <string>
35 #include <iostream>
36 #include <map>
37 #include <microsim/MSLink.h>
38 #include <microsim/MSLane.h>
39 #include "MSTrafficLightLogic.h"
41 #include "MSTLLogicControl.h"
43 
44 #ifdef CHECK_MEMORY_LEAKS
45 #include <foreign/nvwa/debug_new.h>
46 #endif // CHECK_MEMORY_LEAKS
47 
48 
49 // ===========================================================================
50 // member method definitions
51 // ===========================================================================
52 /* -------------------------------------------------------------------------
53  * member method definitions
54  * ----------------------------------------------------------------------- */
56  MSTrafficLightLogic* tlLogic, SUMOTime nextSwitch)
57  : myTLControl(tlcontrol), myTLLogic(tlLogic),
58  myAssumedNextSwitch(nextSwitch), myAmValid(true) {}
59 
60 
62 
63 
64 
67  // check whether this command has been descheduled
68  if (!myAmValid) {
69  return 0;
70  }
71  //
72  bool isActive = myTLControl.isActive(myTLLogic);
73  size_t step1 = myTLLogic->getCurrentPhaseIndex();
74  SUMOTime next = myTLLogic->trySwitch(isActive);
75  size_t step2 = myTLLogic->getCurrentPhaseIndex();
76  if (step1 != step2) {
77  if (isActive) {
78  // execute any action connected to this tls
79  const MSTLLogicControl::TLSLogicVariants& vars = myTLControl.get(myTLLogic->getID());
80  // set link priorities
81  myTLLogic->setTrafficLightSignals(t);
82  // execute switch actions
84  }
85  }
86  myAssumedNextSwitch += next;
87  return next;
88 }
89 
90 
91 void
93  if (tlLogic == myTLLogic) {
94  myAmValid = false;
95  myAssumedNextSwitch = -1;
96  }
97 }
98 
99 
100 /* -------------------------------------------------------------------------
101  * member method definitions
102  * ----------------------------------------------------------------------- */
104  const std::string& id, const std::string& programID,
105  SUMOTime delay)
106  : myID(id), myProgramID(programID), myCurrentDurationIncrement(-1),
107  myDefaultCycleTime(0) {
108  mySwitchCommand = new SwitchCommand(tlcontrol, this, delay);
111 }
112 
113 
114 void
116 }
117 
118 
120  // no need to do something about mySwitchCommand here,
121  // it is handled by the event control
122 }
123 
124 
125 // ----------- Handling of controlled links
126 void
127 MSTrafficLightLogic::addLink(MSLink* link, MSLane* lane, unsigned int pos) {
128  // !!! should be done within the loader (checking necessary)
129  myLinks.reserve(pos + 1);
130  while (myLinks.size() <= pos) {
131  myLinks.push_back(LinkVector());
132  }
133  myLinks[pos].push_back(link);
134  //
135  myLanes.reserve(pos + 1);
136  while (myLanes.size() <= pos) {
137  myLanes.push_back(LaneVector());
138  }
139  myLanes[pos].push_back(lane);
140  link->setTLState((LinkState) getCurrentPhaseDef().getState()[pos], MSNet::getInstance()->getCurrentTimeStep());
141 }
142 
143 
144 void
146  myLinks = logic.myLinks;
147  myLanes = logic.myLanes;
148 }
149 
150 
151 std::map<MSLink*, LinkState>
153  std::map<MSLink*, LinkState> ret;
154  for (LinkVectorVector::const_iterator i1 = myLinks.begin(); i1 != myLinks.end(); ++i1) {
155  const LinkVector& l = (*i1);
156  for (LinkVector::const_iterator i2 = l.begin(); i2 != l.end(); ++i2) {
157  ret[*i2] = (*i2)->getState();
158  }
159  }
160  return ret;
161 }
162 
163 
164 bool
166  // get the current traffic light signal combination
167  const std::string& state = getCurrentPhaseDef().getState();
168  // go through the links
169  for (size_t i = 0; i < myLinks.size(); i++) {
170  const LinkVector& currGroup = myLinks[i];
171  LinkState ls = (LinkState) state[i];
172  for (LinkVector::const_iterator j = currGroup.begin(); j != currGroup.end(); j++) {
173  (*j)->setTLState(ls, t);
174  }
175  }
176  return true;
177 }
178 
179 
180 void
181 MSTrafficLightLogic::resetLinkStates(const std::map<MSLink*, LinkState>& vals) const {
182  for (LinkVectorVector::const_iterator i1 = myLinks.begin(); i1 != myLinks.end(); ++i1) {
183  const LinkVector& l = (*i1);
184  for (LinkVector::const_iterator i2 = l.begin(); i2 != l.end(); ++i2) {
185  assert(vals.find(*i2) != vals.end());
186  (*i2)->setTLState(vals.find(*i2)->second, MSNet::getInstance()->getCurrentTimeStep());
187  }
188  }
189 }
190 
191 
192 // ----------- Static Information Retrieval
193 int
194 MSTrafficLightLogic::getLinkIndex(const MSLink* const link) const {
195  int index = 0;
196  for (LinkVectorVector::const_iterator i1 = myLinks.begin(); i1 != myLinks.end(); ++i1, ++index) {
197  const LinkVector& l = (*i1);
198  for (LinkVector::const_iterator i2 = l.begin(); i2 != l.end(); ++i2) {
199  if ((*i2) == link) {
200  return index;
201  }
202  }
203  }
204  return -1;
205 }
206 
207 
208 
209 // ----------- Dynamic Information Retrieval
210 SUMOTime
212  return mySwitchCommand != 0 ? mySwitchCommand->getNextSwitchTime() : -1;
213 }
214 
215 
216 // ----------- Changing phases and phase durations
217 void
219  myOverridingTimes.push_back(duration);
220 }
221 
222 
223 void
226 }
227 
228 
229 
230 
231 // ----------- Algorithm parameter handling
232 void
233 MSTrafficLightLogic::setParameter(const std::map<std::string, std::string>& params) {
234  myParameter = params;
235 }
236 
237 
238 std::string
239 MSTrafficLightLogic::getParameterValue(const std::string& key) const {
240  if (myParameter.find(key) == myParameter.end()) {
241  return "";
242  }
243  return myParameter.find(key)->second;
244 }
245 
246 
247 /****************************************************************************/
248