Boundary Enforcer

BattleArena comes pre-installed with a boundary enforcer module which ensures that players do not leave the bounds of an arena. 
 Configuring the Module 
 This module can be enabled by adding boundary-enforcer to the  modules section of your Arena Configuration . No other configuration is required from this point, and once BattleArena has been reloaded with  /battlearena reload , players will be unable to leave the arena boundaries configured in the  Map Creation process.