DozerTail constructor

DozerTail(int id, double x, double y, Level level)

Creates a simple DozerTail object

Implementation 

DozerTail(int id, double x, double y, Level level) {
  this.id = id;
  this.x = x;
  this.y = y;
  this.height = (level.viewWidth * 0.05).floor();
  this.width = (level.viewWidth * 0.05).floor();
  this.level = level;
}