@startuml tvsz + lejár az idő

title 15

actor Skeleton as sk
participant "r1 : Room" as r
participant "s1 : Student" as s
participant "t1 : TVSZ" as c

sk->r ++: killStudents()

r -> s ++: die()

s->c ++: protectFromKill()
c-->s --: true

s->c ++: decreaseDurability()
c-->s --: false

s->>c !!: delete

s-->r --: false

r-->sk --:

@enduml