public NormalShot(Tank tk)
	{
		super(tk);
		this.shotPower=1;
		this.shotRadius=8;
		this.shotSpeed=12;
		this.oldx=sx;
		this.oldy=sy;
		this.lengthX=shotSpeed*(sx-ox)/(int)Math.hypot(sx-ox,sy-oy);
		this.lengthY=shotSpeed*(sy-oy)/(int)Math.hypot(sx-ox,sy-oy);
	}