UKismetSystemLibrary::SphereTraceMultiForObjects函數(shù)

（官方藍(lán)圖里面使用的就是這個(gè)函數(shù)，推薦使用）

float SeekRadius = 100.0f;

TArray<FHitResult> HitResults2;

FVector BeginLocation = FollowCamera->GetComponentLocation();////起點(diǎn)位置

FVector EndLocation = BeginLocation + FollowCamera->GetForwardVector() * 1000;//終點(diǎn)位置

TArray<TEnumAsByte<EObjectTypeQuery>> ObjectTypes;

ObjectTypes.Add(EObjectTypeQuery::ObjectTypeQuery2);//Pawn

TArray<AActor* > IgnoreActors;

//參數(shù)列表場(chǎng)景可查看同名藍(lán)圖節(jié)點(diǎn)

bool bIsHit = UKismetSystemLibrary::SphereTraceMultiForObjects(GetWorld(), BeginLocation, EndLocation, SeekRadius, ObjectTypes, true, IgnoreActors, EDrawDebugTrace::ForDuration, HitResults2, true);

if (bIsHit)

{

for (FHitResult HitResult : HitResults2)

{

if (HitResult.GetActor() != NULL)

{

//對(duì)Actor們做的事情

}

}

}

SweepMultiByObjectType函數(shù)

TArray<FHitResult> HitResults;//檢測(cè)結(jié)果合集

FVector LineStart = FollowCamera->GetComponentLocation();;//起點(diǎn)位置

FVector LineEnd = LineStart + FollowCamera->GetForwardVector() * 3000;//終點(diǎn)位置

FCollisionObjectQueryParams ObjectQueryParams;//碰撞對(duì)象查詢參數(shù)

ObjectQueryParams.AddObjectTypesToQuery(ECC_Pawn); //添加檢測(cè)對(duì)象

FCollisionShape Shape;//碰撞檢測(cè)的形狀，可以是盒子，圓柱體或者球體

Shape.MakeSphere(150.0f);

Shape.SetSphere(150.0f);//設(shè)置大小

FCollisionQueryParams Params;//碰撞對(duì)象查詢參數(shù)

Params.AddIgnoredActor(this);//忽略自身

DrawDebugLine(GetWorld(), LineStart, LineEnd, FColor::Red, false, 2.0f, 0.0f, 2.0f);

//這個(gè)函數(shù)當(dāng)遇到第一個(gè)碰撞的物體的時(shí)候就會(huì)停下，然后收集所有的重疊部分

//第四個(gè)參數(shù)是球體的旋轉(zhuǎn)，但是查詢中的旋轉(zhuǎn)沒有意義所以設(shè)置為空旋轉(zhuǎn)

if (GetWorld()->SweepMultiByObjectType(HitResults, LineStart, LineEnd, FQuat::Identity, ObjectQueryParams, Shape, Params))

{

for (FHitResult Hit : HitResults)//創(chuàng)建單個(gè)碰撞結(jié)果集，對(duì)多對(duì)象碰撞結(jié)果集合進(jìn)行遍歷

{

AActor* HitActor = Hit.GetActor();

if (HitActor)

{

//對(duì)Actor們做的事情

UKismetSystemLibrary::PrintString(this, TEXT("Hit Succeed，HitActorName is :") + HitActor->GetName());

}

}

}