so i was on a lan server with y friend we were playing the beta and he spawned 5 creapers near my tardis and when i got  near the tardis i did not see them they blew up then my tardis was ringing the cloister bell whard it go??

The TARDIS isn't explosion proof.
It exploded.

awwwww man my custum interer died

Nope, it's still there. Just no more exterior.