class Citizen {

  int x, y;
  float xPos, yPos;
  color c, tempC;
  boolean [] linkArray = new boolean[numCitizens]; // records links with all other citizens
  int linkCount;

  Citizen (int _x, int _y, color _c) {
    x = _x;
    y = _y;
    c = _c;
    xPos = 150 + ((x % squareEdge) * squareSize) + (squareSize/2);
    yPos = 50 + ((y % squareEdge) * squareSize) + (squareSize/2);
    tempC = 255;
    for (int i = 0; i < numCitizens; i++) {
      linkArray[i] = false;
    linkCount = 0;
    }
  }

  void drawCitizen() {
    stroke(0);
    strokeWeight(1);
    fill(c);
    ellipse(xPos, yPos, circleSize, circleSize);
  }

  void moveCitizen() {
    int r = int(random(3));
    if (r == 0) {
      if (x >= squareEdge-1) {
        x = 0;
      }
      else {
        x = x + 1;
      }
    }
    else if (r == 1) {
      if (y >= squareEdge-1) {
        y = 0;
      }
      else {
        y = y + 1;
      }
    }
    else if (r == 2) {
      if (x <= 0) {
        x = squareEdge-1;
      }
      else {
        x = x - 1;
      }
    }
    else if (r == 3) {
      if (y <= 0) {
        y = squareEdge-1;
      }
      else {
        y = y - 1;
      }
    }
    xPos = 150 + ((x % squareEdge) * squareSize) + (squareSize/2);
    yPos = 50 + ((y % squareEdge) * squareSize) + (squareSize/2);
  }

  //  void changeColor() {
  //    float r = red(c);
  //    float g = green(c);
  //    float b = blue(c);
  //    for (int i = 0; i < squareEdge; i++) {
  //      for (int j = 0; j < squareEdge; j++) {
  //        if (gridSquares[i][j].x == x && gridSquares[i][j].y == y) {
  //          if (red(gridSquares[i][j].c) > red(c)) {
  //            r = red(gridSquares[i][j].c);
  //          }
  //          if (green(gridSquares[i][j].c) > green(c)) {
  //            g = green(gridSquares[i][j].c);
  //          }
  //          if (blue(gridSquares[i][j].c) > blue(c)) {
  //            b = blue(gridSquares[i][j].c);
  //          }
  //          c = color(r, g, b);
  //        }
  //      }
  //    }
  //  }

  //  void changeColor() {
  //    for (int i = 0; i < squareEdge; i++) {
  //      for (int j = 0; j < squareEdge; j++) {
  //        if (gridSquares[i][j].x == x && gridSquares[i][j].y == y) {
  //          if (gridSquares[i][j].c == 255) {
  //            c = color(0);
  //          }
  //          else {
  //            c = color(255);
  //          }
  //        }
  //      }
  //    }
  //  }

  void switchColor() {
    tempC = c;
    c = gridSquares[x][y].c;
    gridSquares[x][y].c = tempC;
    tempC = 255;
  }

  void setColor() {
    for (int i = 0; i < squareEdge; i++) {
      for (int j = 0; j < squareEdge; j++) {
        if (gridSquares[i][j].x == x && gridSquares[i][j].y == y) {
          tempC = gridSquares[i][j].c;
        }
      }
    }
  }

  void changeColor() {
    c = tempC;
  }

  void forgeLink() {
    for (int i = 0; i < numCitizens; i++) {
      if (x == citizens[i].x+1 && y == citizens[i].y) {
        linkArray[i] = true;
      }
      else if (y == citizens[i].y+1 && x == citizens[i].x) {
        linkArray[i] = true;
      }
      else if (x == citizens[i].x-1 && y == citizens[i].y) {
        linkArray[i] = true;
      }
      else if (y == citizens[i].y-1 && x == citizens[i].x) {
        linkArray[i] = true;
      }
    }
  }

  void drawLink() {
    stroke(0);
    strokeWeight(1);
    for (int i = 0; i < numCitizens; i++) {
      if (linkArray[i]) {
        line(xPos, yPos, citizens[i].xPos, citizens[i].yPos);
      }
    }
  }

  void countLinks() {
    linkCount = 0;
    for (int i = 0; i < numCitizens; i++) {
      if (linkArray[i]) {
        linkCount++;
      }
    }
  }
}