Beispiel #1
0
  /** Replace path[index+1] by the zigzag point with the given angle */
  private void addZigZag(List<Vector2> path, int index, int angleIndex) {
    Vector2 from = path.get(index);
    Vector2 to = path.get(index + 1);
    double angle = Utils.getAngleTo(from.getX(), from.getY(), to.getX(), to.getY());
    angle += angles[angleIndex];
    Vector2 zigV = null;
    // try to find a walkable target in the direction of the angle
    for (int i = 0; zigV == null && i <= 2; ++i) {
      Vector2 v = from.add(Utils.facingAngleToVector2(angle).scale(MyCommander.SMALL_DIST + i));

      if (Tile.isValid((int) v.getX(), (int) v.getY())) {
        Tile zigTile = Tile.get(v);
        if (zigTile.isWalkable) {
          zigV = v;
          break;
        }
      }
    }
    if (zigV != null) {
      path.remove(index + 1);
      path.add(index + 1, zigV);
    } else {
      Log.log(
          "addZigZag: No walkable spot found, from = "
              + from
              + ", to = "
              + to
              + ", natural point: "
              + from.add(Utils.facingAngleToVector2(angle).scale(MyCommander.SMALL_DIST)));
    }
    zigZagAdded[index] = true;
    zigZagAdded[index + 1] = true;
    if (index + 2 < zigZagAdded.length) {
      zigZagAdded[index + 2] = true;
    }
  }
Beispiel #2
0
  public void addZigZag(
      final List<Vector2> path, final double fovAngle, final int[][] squareValue) {
    if (path.size() < 2) {
      return;
    }
    Log.log("addZigZag <- " + Utils.vector2ListToString(path) + ", size: " + path.size());
    attackedTiles.clear();
    zigZagAdded = new boolean[path.size()];
    extraValue = new int[angles.length][path.size()];
    // Calculate which tiles we will see when walking the
    // unzigzagged path, put result in attackedTiles
    for (int i = 0; i < path.size() - 1; ++i) {
      Vector2 from = path.get(i);
      Vector2 to = path.get(i + 1);
      double angle = Utils.getAngleTo(from.getX(), from.getY(), to.getX(), to.getY());
      Tile t = Tile.get(from);
      t.visitAttackedTiles(
          angle,
          fovAngle,
          new TileVisitor() {

            @Override
            public boolean visit(Tile t) {
              attackedTiles.add(t);
              return true;
            }
          });
    }
    // calculate at each square/each angle how much value we would add
    // by adding a zigzag; put result in extraValue
    ValueCalculatingVisitor visitor = new ValueCalculatingVisitor();
    visitor.squareValue = squareValue;
    for (int a = 0; a < angles.length; ++a) {
      for (int i = 0; i < path.size() - 1; ++i) {
        Vector2 from = path.get(i);
        Vector2 to = path.get(i + 1);
        Tile fromTile = Tile.get(from);
        Tile toTile = Tile.get(to);
        if (toTile.isWalkable) {
          double angle = Utils.getAngleTo(from.getX(), from.getY(), to.getX(), to.getY());
          angle += angles[a];
          visitor.clear();
          fromTile.visitAttackedTiles(angle, fovAngle, visitor);
          extraValue[a][i] = visitor.value;
        } else {
          extraValue[a][i] = -1;
        }
      }
    }
    boolean stop = false;
    while (!stop) {
      // find best zigzag on the path
      int bestIndex = -1;
      int bestAngle = 0;
      int bestValue = 10;
      for (int i = 0; i < path.size() - 1; ++i) {
        if (!zigZagAdded[i] && !zigZagAdded[i + 1]) {
          for (int a = 0; a < angles.length; ++a) {
            if (extraValue[a][i] > bestValue) {
              bestIndex = i;
              bestAngle = a;
              bestValue = extraValue[a][i];
            }
          }
        }
      }
      if (bestIndex >= 0) {
        addZigZag(path, bestIndex, bestAngle);
      } else {
        // no more zigzag added
        stop = true;
      }
    }
    Log.log("addZigZag -> " + Utils.vector2ListToString(path) + ", size: " + path.size());
  }