示例#1
0
 @Override
 public Object report(final Context context) throws LogoException {
   AgentSet sourceSet = argEvalAgentSet(context, 0);
   args[1].checkAgentSetClass(sourceSet, context);
   double winningValue = Double.MAX_VALUE;
   List<Agent> winners = new ArrayList<Agent>();
   org.nlogo.nvm.Context freshContext = new org.nlogo.nvm.Context(context, sourceSet);
   for (AgentSet.Iterator iter = sourceSet.iterator(); iter.hasNext(); ) {
     org.nlogo.agent.Agent tester = iter.next();
     Object result = freshContext.evaluateReporter(tester, args[1]);
     if (!(result instanceof Double)) {
       continue;
     }
     double dvalue = ((Double) result).doubleValue();
     // need to be careful here to handle properly the case where
     // dvalue equals Double.MAX_VALUE - ST 10/11/04
     if (dvalue <= winningValue) {
       if (dvalue < winningValue) {
         winningValue = dvalue;
         winners.clear();
       }
       winners.add(tester);
     }
   }
   if (winners.isEmpty()) {
     return org.nlogo.api.Nobody$.MODULE$;
   } else {
     return winners.get(context.job.random.nextInt(winners.size()));
   }
 }
示例#2
0
 public void perform_1(final Context context) {
   Turtle turtle = (Turtle) context.agent;
   turtle.moveToPatchCenter();
   Patch patch = turtle.getPatchHere();
   double winningValue = Double.MAX_VALUE;
   List<Patch> winners = new ArrayList<Patch>();
   for (AgentSet.Iterator it = patch.getNeighbors4().iterator(); it.hasNext(); ) {
     Patch tester = (Patch) it.next();
     Object value = tester.getPatchVariable(reference.vn());
     if (!(value instanceof Double)) {
       continue;
     }
     double dvalue = ((Double) value).doubleValue();
     // need to be careful here to handle properly the case where
     // dvalue equals Double.MAX_VALUE - ST 10/11/04, 1/6/07
     if (dvalue <= winningValue) {
       if (dvalue < winningValue) {
         winningValue = dvalue;
         winners.clear();
       }
       winners.add(tester);
     }
   }
   if (!winners.isEmpty()
       && (!(patch.getPatchVariable(reference.vn()) instanceof Double)
           || winningValue < ((Double) patch.getPatchVariable(reference.vn())).doubleValue())) {
     Patch winner = winners.get(context.job.random.nextInt(winners.size()));
     turtle.face(winner, true);
     try {
       turtle.moveTo(winner);
     } catch (AgentException ex) {
       // should be impossible
       throw new IllegalStateException(ex);
     }
   }
   context.ip = next;
 }
示例#3
0
 public double report_1(Context context, AgentSet sourceSet, Reporter block) throws LogoException {
   block.checkAgentSetClass(sourceSet, context);
   Context freshContext = new Context(context, sourceSet);
   int result = 0;
   for (AgentSet.Iterator iter = sourceSet.iterator(); iter.hasNext(); ) {
     Agent tester = iter.next();
     Object value = freshContext.evaluateReporter(tester, block);
     if (!(value instanceof Boolean)) {
       throw new EngineException(
           context,
           this,
           I18N.errorsJ()
               .getN(
                   "org.nlogo.prim.$common.expectedBooleanValue",
                   displayName(),
                   Dump.logoObject(tester),
                   Dump.logoObject(value)));
     }
     if (((Boolean) value).booleanValue()) {
       result++;
     }
   }
   return result;
 }