code: function(x1, y1, x2, y2) {
          var squaredDistance = Crafty.math.squaredDistance(x1, y1, x2, y2);
          return Math.sqrt(parseFloat(squaredDistance));
      }
docs: @
  #Crafty.math.distance
  @comp Crafty.math
  @kind Method
  
  @sign public Number Crafty.math.distance(Number x1, Number y1, Number x2, Number y2)
  @param x1 - First x coordinate.
  @param y1 - First y coordinate.
  @param x2 - Second x coordinate.
  @param y2 - Second y coordinate.
  @return The distance between the two points.
  
  Distance between two points.