void ATankAIController::Tick(float deltaTime) {
Super::Tick(deltaTime);
ATank* PlayerTank = GetPlayerTank();
if (PlayerTank) {
GetControlledTank()->AimAt(PlayerTank->GetActorLocation());
}
}
void ATankAIController::Tick(float DeltaSeconds)
{
Super::Tick(DeltaSeconds);
ATank* PlayerTank = Cast<ATank>(GetWorld()->GetFirstPlayerController()->GetPawn());
auto ControlledTank = Cast<ATank>(GetPawn());
if (PlayerTank)
{
ControlledTank->AimAt(PlayerTank->GetActorLocation());
}
ControlledTank->Fire();
}
void ABotController::SetEnemy(class APawn* InPawn)
{
//Set the blackboard keys to the object and location of the found enemy, for use in the MoveTo behavior tree task
BlackboardComp->SetValue<UBlackboardKeyType_Object>(EnemyKeyID, InPawn);
BlackboardComp->SetValue<UBlackboardKeyType_Vector>(EnemyLocationID, InPawn->GetActorLocation());
//Calculates and sets the direction for the AI bot's projectile
ABot* ThisBot = Cast<ABot>(GetPawn());
ATank *Enemy = Cast<ATank>(this->BestPawn);
FVector dir;
dir = Enemy->GetActorLocation() - ThisBot->GetActorLocation(); //Finds the vector between the AI bot and the player tank
dir = dir.GetSafeNormal(1.0f) * 1000; //Normalizes and scales the vector for a uniform speed
ThisBot->Direction = FVector(dir.X, dir.Y, 0.f); //Zeros out the Z value so the projectile moves solely on the horizontal plane
}
// Function to set the bot's target to the closest player-controlled tank
void ABotController::SearchForEnemy()
{
APawn* MyBot = GetPawn();
ABot* Tank = Cast<ABot>(GetPawn());
if (MyBot == NULL)
return;
//indicate the that the game has now started
BlackboardComp->SetValue<UBlackboardKeyType_Bool>(HasStartedID, true);
const FVector MyLoc = MyBot->GetActorLocation();
float BestDistSq = MAX_FLT;
//Iterate through the world objects, and set the closest found player to BestPawn
for (FConstPawnIterator It = GetWorld()->GetPawnIterator(); It; It++)
{
ATank* TestPawn = Cast<ATank>(*It);
if (TestPawn)
{
const float DistSq = FVector::Dist(TestPawn->GetActorLocation(), MyLoc);
if (DistSq < BestDistSq)
{
BestDistSq = DistSq;
BestPawn = TestPawn;
if (PawnCanBeSeen(*It)){
FRotator Rot = FRotationMatrix::MakeFromX(BestPawn->GetActorLocation() - Tank->GetActorLocation()).Rotator(); //Find the rotator required for the turret to face it's target
Tank->BotTurret->SetWorldRotation(FRotator(0.f, Rot.Yaw, 0.f)); //Point the turret to it's target
}
}
}
}
if (BestPawn)
{
SetEnemy(BestPawn); //Once the closest player is found, set the Bot's target
}
}