FirefighterBoard.java

package model;

import util.Position;

import java.util.*;

public class FirefighterBoard implements Board<List<ModelElement>> {
  private final int columnCount;
  private final int rowCount;
  private final int initialFireCount;
  private final int initialFirefighterCount;
  private final int initialCloudCount;
  private final model.TargetStrategy targetStrategy = new model.TargetStrategy();
  private List<Firefighter> firefighters;
  private Fire fire;
  private final Map<Position, List<Position>> neighbors = new HashMap<>();
  private List<Cloud> clouds;
  private final Position[][] positions;
  private int step = 0;
  private final Random randomGenerator = new Random();

  public FirefighterBoard(int columnCount, int rowCount, int initialFireCount, int initialFirefighterCount, int initialCloudCount) {
    this.columnCount = columnCount;
    this.rowCount = rowCount;
    this.positions = new Position[rowCount][columnCount];
    for (int column = 0; column < columnCount; column++)
      for (int row = 0; row < rowCount; row++)
        positions[row][column] = new Position(row, column);
    for (int column = 0; column < columnCount; column++)
      for (int row = 0; row < rowCount; row++) {
        List<Position> list = new ArrayList<>();
        if (row > 0) list.add(positions[row - 1][column]);
        if (column > 0) list.add(positions[row][column - 1]);
        if (row < rowCount - 1) list.add(positions[row + 1][column]);
        if (column < columnCount - 1) list.add(positions[row][column + 1]);
        neighbors.put(positions[row][column], list);
      }
    this.initialFireCount = initialFireCount;
    this.initialFirefighterCount = initialFirefighterCount;
    this.initialCloudCount = initialCloudCount;
    initializeElements();
  }

  public void initializeElements() {
    firefighters = new ArrayList<>();
    clouds = new ArrayList<>();
    Set<Position> firePositions = new HashSet<>();
    for (int index = 0; index < initialCloudCount; index++) {
      clouds.add(new Cloud(randomPosition(), neighbors));
    }
    for (int index = 0; index < initialFireCount; index++)
      firePositions.add(randomPosition());
    fire = new Fire(firePositions, neighbors);
    for (int index = 0; index < initialFirefighterCount; index++)
      firefighters.add(new Firefighter(randomPosition()));
    for (int index = 0; index < initialCloudCount; index++) {
      clouds.add(new Cloud(randomPosition(), neighbors));
    }
  }

  private Position randomPosition() {
    return new Position(randomGenerator.nextInt(rowCount), randomGenerator.nextInt(columnCount));
  }

  @Override
  public List<ModelElement> getState(Position position) {
    List<ModelElement> result = new ArrayList<>();
    for (Cloud cloud : clouds) {
      if (cloud.getPosition().equals(position)) {
        result.add(ModelElement.CLOUD);