robbersrc/robber.cpp

   1 #include "robber.h"
   2 #include <iostream>
   3 #include <iterator>
   4 #include <queue>
   5 #include <cmath>
   6
   7 using namespace std;
   8 using namespace __gnu_cxx;
   9
  10 string Robber::turn(){
  11         hash_map<string,double> streets;
  12         Intersection& inter = _intersections[_location];
  13         for (hash_map<string,StreetType>::const_iterator street = inter.connections.begin();
  14                street != inter.connections.end(); ++street){
  15                 if (street->second == car){
  16                         //cerr << "Discarding: " << street->first << " since car is needed" << endl;
  17                         continue;
  18                 }
  19                 double goodness = 0;
  20                 Intersection& conInter = _intersections[street->first];
  21
  22                 list<string> closestFootCop = shortestPath(street->first, cop_foot, FindPlayer(_players, cop_foot, 6), true);
  23                 list<string> closestCarCop = shortestPath(street->first, cop_car, FindPlayer(_players, cop_car, 5), true);
  24
  25                 unsigned int closestCop = 0;
  26                 bool copInCar = false;
  27
  28                 if (closestCarCop.size() < closestFootCop.size() && closestCarCop.size() > 0){
  29                         closestCop = closestCarCop.size();
  30                         copInCar = true;
  31                 }else
  32                         closestCop = closestFootCop.size();
  33
  34                 if (closestCop > 0 && closestCop < 3){
  35                         //cerr << "Cop " << closestCop << " intersections away." << endl;
  36                         continue;
  37                 }
  38
  39                 priority_queue<double> banks;
  40                 for(hash_map<string,int>::const_iterator bank = _banks.begin();
  41                                 bank != _banks.end(); ++bank){
  42                         //cerr << "Handling bank at: " << bank->first << endl;
  43                         if (bank->second > 0){
  44                                 list<string> cop = shortestPath(bank->first, cop_car, FindPlayer(_players, cop_car, 3), true);
  45                                 if (cop.size() > 0)
  46                                         continue;
  47                                 else{
  48                                         cop = shortestPath(bank->first, cop_foot, FindPlayer(_players, cop_foot, 3), true);
  49                                         if (cop.size() > 0)
  50                                                 continue;
  51                                 }
  52                                 list<string> l = shortestPath(street->first, _type, SimpleSPGoal(bank->first));
  53                                 if (l.size() < 1)
  54                                         continue;
  55                                 //list<string>::iterator i = l.begin();
  56                                 //++i;
  57                                 banks.push(bank->second/(pow(l.size(),4.0)));
  58                         }
  59                 }
  60                 //sort(banks.begin(),banks.end(),greater<double>());
  61
  62                 for (unsigned int i = 0; i < 2 && banks.size() > 0;++i){
  63                         goodness += banks.top();
  64                         banks.pop();
  65                 }
  66
  67                 //cerr << "Goodness before cop: " << goodness << endl;
  68                 if (closestCop > 2){
  69                         //cerr << "Cop " << closestCop << " intersections away." << endl;
  70                         goodness *= 1 - 1/(copInCar ? closestCop : closestCop - 1);
  71                 }
  72                 //cerr << "Goodness after cop: " << goodness << endl;
  73
  74                 if (conInter.type == bank){
  75                         //cerr << "FOUND A BANK" << endl;
  76                         if (closestCop > 0 && closestCop < 4)
  77                                 continue;
  78                         else if (_banks[street->first] > 0){
  79                                 //cerr << "No cop close to bank" << endl;
  80                                 return street->first;
  81                         }
  82                 }
  83
  84                 //cerr << "Street: " << street->first << " goodness: " << goodness << endl;
  85                 streets[street->first] = goodness;
  86         }
  87         streets[_oldLocation] /= 10;
  88
  89
  90
  91         /*cerr << "Using route: ";
  92         copy(v.begin(), v.end(), ostream_iterator<string>(cerr, " : "));
  93         cerr << endl;
  94         */
  95
  96         //stand still if we can't find a better choice..
  97         string destination = _location;
  98         double goodness = 0;
  99         for (hash_map<string,double>::const_iterator dest = streets.begin();
 100                         dest != streets.end(); ++dest){
 101                 //cerr << "Goodness: " << dest->second << endl;
 102                 if (dest->second > goodness){
 103                 //cerr << "New Goodness: " << dest->second << endl;
 104                         goodness = dest->second;
 105                         destination = dest->first;
 106                 }
 107         }
 108         _oldLocation = _location;
 109
 110         return destination;
 111
 112 }
 113
 114 int main(){
 115         Robber robber("robber");
 116         robber.play();
 117
 118         return 0;
 119 }