compareTo method

@override int compareTo(Tile other)

Compares this object to another object.

Returns a value like a Comparator when comparing this to other. That is, it returns a negative integer if this is ordered before other, a positive integer if this is ordered after other, and zero if this and other are ordered together.

The other argument must be a value that is comparable to this object.

Implementation

@override
int compareTo(Tile other) {
  var zIndexA = level.zIndex;
  var zIndexB = other.level.zIndex;

  if (zIndexA == zIndexB) {
    return 0;
  } else {
    return zIndexB.compareTo(zIndexA);
  }
}