class  APacmanEnemy* ControlledEnemy;

Super::OnPossess(PawnToPossess);

ControlledEnemy=Cast<APacmanEnemy>(PawnToPossess);

GoToNewDestination()

#include "NavigationSystem.h"

UNavigationSystemV1*NavMesh=UNavigationSystemV1::GetCurrent(this);

GetRandomReachblePointInRadius()

FNavLocation RandomLocation;

、

GetActorLocation()