move image to clicked position (Processing 3)

ImageMoveToClick.pde

PImage img;
int curX, curY;
int dstX, dstY;

void setup()
{
  size(600, 600);

  curX = dstX = width / 2;
  curY = dstY = height / 2;

  img = loadImage("avatar.jpg");
  img.resize(100, 100);

  imageMode(CENTER);
}

void draw()
{
  background(0, 0, 0);

  if (curX < dstX) {
    ++curX;
  }
  else if (curX > dstX) {
    --curX;
  }

  if (curY < dstY) {
    ++curY;
  }
  else if (curY > dstY) {
    --curY;
  }

  image(img, curX, curY);
}

void mouseClicked()
{
  dstX = mouseX;
  dstY = mouseY;
}