Also want my cake

Question

Introduction

Today is my birthday,

Yes my parents spend a lot time at home during the cold December holidays as many others.

So I also want my cake.

But I have a problem: I just sent the invitations today so I'm not sure how many friends will come. Also I don't want to order a big cake because I have been on a diet since last year and don't want to keep temptation leftovers in the fridge.

Challenge

Write a full program to output the cake design so my baker prepares just enough cake for everyone.

Input Integer 1 <= n <= 999. Worst case I eat my cake alone.

• Each slice will have a unique label number 1 .. n sequenced left to right, then top to bottom.
• Write in the middle line and align center the best way you can.
• Slice size is a square of 3x3 (this is why upper limit is 999).
• * indicate where to cut each slice.

Output

n = 1 => Side = RoundUP(sqrt(1)) = 1

*****
*   *
* 1 *
*   *
*****

n = 3 => Side = RoundUP(sqrt(3)) = 2

*********
*   *   *
* 1 * 2 *
*   *   *
*********
*   *
* 3 *
*   *
*****

n = 5 => Side = RoundUP(sqrt(5)) = 3

*************
*   *   *   *
* 1 * 2 * 3 *
*   *   *   *
*************
*   *   *
* 4 * 5 *
*   *   *
*********

n = 10 => Side = RoundUP(sqrt(10)) = 4

*****************
*   *   *   *   *
* 1 * 2 * 3 * 4 *
*   *   *   *   *
*****************
*   *   *   *   *
* 5 * 6 * 7 * 8 *
*   *   *   *   *
*****************
*   *   *  
* 9 * 10*
*   *   *
*********

Winning

Shortest code in bytes wins.

Answer 1

Python 2, 241 239 237 bytes

i=input()
s=int(round(i**.5+.5))
q="*"*5;p="*   *"
v=lambda x,y:"\x1b[%d;%dH".join(["",q,p,"*{}*",p,q])%tuple(i for j in zip(range(x*4+1,x*4+6),[y*4+5]*5)for i in j)
print"".join([v(j/s,j%s).format(`j+1`.center(3," "))for j in range(i)])

Lots of ANSI goodness...

Defines a function for drawing a box at a position on the screen.

Then calls it with the relevant positions that are in the cake.

Finally adds the numbers using str.format() and str.center

NOTE: If your terminal isn't big enough to display everything at once, it will get 'cropped' and you won't be able to see anything past the last row.