source: branches/Robocode.TrunkInt/HeuristicLab.Problems.Robocode/3.3/Interpreter.cs @ 9882

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Diagnostics;
using System.IO;
using System.Linq;
using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;

namespace HeuristicLab.Problems.Robocode {
  public class Interpreter {
    public static double EvaluateTankProgram(ISymbolicExpressionTree tree, string path) {
      string interpretedProgram = InterpretProgramTree(tree.Root);
      string formattedPath = path.Replace("/", "\\");
      string outputname = "";

      try {
        outputname = Guid.NewGuid().ToString();
        outputname = outputname.Replace('-', '_');
        outputname = "Robocode" + outputname;
        string output = interpretedProgram.Replace("class output", "class " + outputname);
        File.WriteAllText(path + "/robots/Evaluation/" + outputname + ".java", output, System.Text.Encoding.Default);
      }
      catch (Exception ex) {
        throw;
      }

      ProcessStartInfo javaCompileInfo = new ProcessStartInfo();
      javaCompileInfo.FileName = "cmd.exe";
      javaCompileInfo.Arguments = "/C javac -cp " + formattedPath + "\\libs\\robocode.jar " + formattedPath + "\\robots\\Evaluation\\" + outputname + ".java";
      javaCompileInfo.RedirectStandardOutput = true;
      javaCompileInfo.RedirectStandardError = true;
      javaCompileInfo.UseShellExecute = false;
      javaCompileInfo.CreateNoWindow = true;

      Process javaCompile = new Process();
      javaCompile.StartInfo = javaCompileInfo;
      javaCompile.Start();

      string cmdOutput = javaCompile.StandardOutput.ReadToEnd();
      cmdOutput += javaCompile.StandardError.ReadToEnd();

      javaCompile.WaitForExit();
      if (javaCompile.ExitCode != 0) {
        DeleteRobotFiles(path, outputname);
        throw new Exception("Compile Error: " + cmdOutput);
      }

      //parallel execution of multiple robocode instances can sometimes lead to a damaged robot.database
      try { File.Delete(path + "/robots/robot.database"); }
      catch { }

      ProcessStartInfo evaluateCodeInfo = new ProcessStartInfo();
      evaluateCodeInfo.FileName = "cmd.exe";
      evaluateCodeInfo.Arguments = "/C java -classpath " + formattedPath + "\\libs;" + formattedPath + "\\libs\\robocode.core-1.8.1.0.jar;" + formattedPath + "\\libs\\robocode.jar;" + formattedPath + "\\libs\\picocontainer-2.14.2.jar BattleRunner Evaluation." + outputname + "* " + formattedPath + " false";
      evaluateCodeInfo.RedirectStandardOutput = true;
      evaluateCodeInfo.RedirectStandardError = true;
      evaluateCodeInfo.UseShellExecute = false;
      evaluateCodeInfo.CreateNoWindow = true;

      Process evaluateCode = new Process();
      evaluateCode.StartInfo = evaluateCodeInfo;
      evaluateCode.Start();
      evaluateCode.WaitForExit();
      if (evaluateCode.ExitCode != 0) {
        DeleteRobotFiles(path, outputname);
        throw new Exception("Error running Robocode: " + evaluateCode.StandardError.ReadToEnd());
      }

      string scoreString = "";
      double evaluation = -900;
      try {
        scoreString = evaluateCode.StandardOutput.ReadToEnd().Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries).Last();
        evaluation = Double.Parse(scoreString);
      }
      catch (Exception ex) {
        throw new Exception("Error parsing score string: " + ex.ToString());
      }
      finally {
        DeleteRobotFiles(path, outputname);
      }

      return evaluation;
    }

    private static void DeleteRobotFiles(string path, string outputname) {
      try {
        File.Delete(path + "/robots/Evaluation/" + outputname + ".java");
        File.Delete(path + "/robots/Evaluation/" + outputname + ".class");
      }
      catch { }
    }

    public static string InterpretProgramTree(ISymbolicExpressionTreeNode node) {
      var tankNode = node;
      while (!(tankNode.Symbol is Tank))
        tankNode = tankNode.GetSubtree(0);
      return ((CodeNode)tankNode.Symbol).Interpret(tankNode, tankNode.Subtrees);
    }
  }
}