斯坦福UE4 C++课学习补充23：AI自定义任务

2025/8/16 17:07:01 来源：https://blog.csdn.net/weixin_51524146/article/details/141297251 浏览: 次关键词：斯坦福UE4 C++课学习补充23：AI自定义任务

文章目录

一、自定义任务节点
二、优化
- 1. 子弹发射冷却
- 2. 攻击时面朝玩家

一、自定义任务节点

本节需要创建自定义任务节点BTTask，实现小兵进入角色范围后进射击的功能。
对于BTTaskNode的子类，我们需要在代码中重写ExecuteTask函数即可。返回值为EBTNodeResult::Failed和EBTNodeResult::Successd，对应行为树的节点返回失败或者成功。

//SBTTask_RangeAttack.h
UCLASS()
class FPSPROJECT_API USBTTask_RangeAttack : public UBTTaskNode
{GENERATED_BODY()
protected:virtual EBTNodeResult::Type ExecuteTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory) override;//用于角色发射投掷物攻击UPROPERTY(EditAnywhere, Category = "AI")TSubclassOf<AActor> ProjectileClass;
};//SBTTask_RangeAttack.cpp
EBTNodeResult::Type USBTTask_RangeAttack::ExecuteTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory)
{AAIController* MyController = OwnerComp.GetAIOwner();if(ensure(MyController)){ACharacter* MyPawn = Cast<ACharacter>(MyController->GetPawn());if(MyPawn == nullptr){return EBTNodeResult::Failed;}AActor* TargetActor = Cast<AActor>(OwnerComp.GetBlackboardComponent()->GetValueAsObject("TargetActor"));if(TargetActor == nullptr){return EBTNodeResult::Failed;}FVector MuzzleLocation = MyPawn->GetMesh()->GetSocketLocation("Muzzle_01");//方向向量=目标位置-当前位置FVector Direction = TargetActor->GetActorLocation() - MuzzleLocation;FRotator MuzzleRotation = Direction.Rotation();FActorSpawnParameters params;params.Instigator = MyPawn;params.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;ensure(ProjectileClass);AActor* NewProj = GetWorld()->SpawnActor<AActor>(ProjectileClass, MuzzleLocation, MuzzleRotation);return NewProj ? EBTNodeResult::Succeeded : EBTNodeResult::Failed;}return EBTNodeResult::Failed;
}