更新 Source/FLESH/Private/BloodPool.cpp
This commit is contained in:
@@ -1,114 +1,166 @@
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#include "BloodPool.h"
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#include "BloodSystem.h"
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#include "Components/BoxComponent.h"
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#include "NiagaraComponent.h"
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#include "NiagaraFunctionLibrary.h"
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#include "Components/DecalComponent.h"
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#include "Components/DecalComponent.h"
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#include "Materials/MaterialInterface.h"
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#include "Kismet/GameplayStatics.h"
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#include "Materials/MaterialInstanceDynamic.h"
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#include "Engine/World.h"
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#include "TimerManager.h"
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// Sets default values
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// Sets default values for this component's properties
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ABloodPool::ABloodPool()
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UBloodSystem::UBloodSystem()
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{
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{
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// Set this actor to call Tick() every frame
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// Set this component to be initialized when the game starts, and to be ticked every frame
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PrimaryActorTick.bCanEverTick = false;
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PrimaryComponentTick.bCanEverTick = true;
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// Create and set up the collision component
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Collision = CreateDefaultSubobject<UBoxComponent>(TEXT("Collision"));
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RootComponent = Collision;
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Collision->SetCollisionProfileName(TEXT("NoCollision"));
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Collision->SetBoxExtent(FVector(1.0f, 100.0f, 100.0f));
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// Create and set up the decal component
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Decal = CreateDefaultSubobject<UDecalComponent>(TEXT("Decal"));
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Decal->SetupAttachment(RootComponent);
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Decal->SetRelativeRotation(FRotator(90.0f, 0.0f, 0.0f));
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Decal->DecalSize = FVector(10.0f, 100.0f, 100.0f);
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}
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}
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// Called when the game starts or when spawned
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// Called when the game starts
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void ABloodPool::BeginPlay()
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void UBloodSystem::BeginPlay()
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{
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{
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Super::BeginPlay();
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Super::BeginPlay();
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// Set the initial decal material
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if (DecalMaterial)
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{
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UMaterialInstanceDynamic* DynamicMaterial = UMaterialInstanceDynamic::Create(DecalMaterial, this);
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if (DynamicMaterial)
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{
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// Set the color parameter if it exists
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DynamicMaterial->SetVectorParameterValue(FName("Color"), PoolColor);
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Decal->SetMaterial(0, DynamicMaterial);
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}
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}
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// Update the pool size
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UpdatePoolSize();
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}
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}
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void ABloodPool::SetPoolSize(float NewSize)
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// Called every frame
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void UBloodSystem::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
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{
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{
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PoolSize = FMath::Max(0.1f, NewSize);
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Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
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UpdatePoolSize();
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}
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void ABloodPool::SetPoolColor(const FLinearColor& NewColor)
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// Clean up finished blood effects
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{
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for (int32 i = ActiveBloodEffects.Num() - 1; i >= 0; --i)
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PoolColor = NewColor;
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// Update the material color
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if (Decal && Decal->GetMaterial(0))
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{
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{
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UMaterialInstanceDynamic* DynamicMaterial = Cast<UMaterialInstanceDynamic>(Decal->GetMaterial(0));
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if (!ActiveBloodEffects[i] || !ActiveBloodEffects[i]->IsActive())
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if (DynamicMaterial)
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{
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{
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DynamicMaterial->SetVectorParameterValue(FName("Color"), PoolColor);
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ActiveBloodEffects.RemoveAt(i);
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}
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}
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}
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}
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}
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}
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void ABloodPool::StartExpansion(float InExpansionRate, float MaxSize)
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void UBloodSystem::SpawnBloodEffect(const FVector& Location, const FVector& Direction, float Intensity)
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{
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{
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ExpansionRate = InExpansionRate;
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// Ensure we have a valid blood spray system
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MaxPoolSize = MaxSize;
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if (!BloodSpraySystem)
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bIsExpanding = true;
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// Start the expansion timer
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GetWorldTimerManager().SetTimer(ExpansionTimerHandle, this, &ABloodPool::ExpandPool, 0.1f, true);
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}
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void ABloodPool::UpdatePoolSize()
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{
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// Update the decal size
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if (Decal)
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{
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Decal->DecalSize = FVector(10.0f, 100.0f * PoolSize, 100.0f * PoolSize);
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}
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// Update the collision box size
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if (Collision)
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{
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Collision->SetBoxExtent(FVector(1.0f, 100.0f * PoolSize, 100.0f * PoolSize));
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}
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}
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void ABloodPool::ExpandPool()
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{
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if (!bIsExpanding)
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{
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{
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return;
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return;
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}
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}
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// Increase the pool size
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// Manage the number of active blood effects
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PoolSize += ExpansionRate * 0.1f;
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if (ActiveBloodEffects.Num() >= MaxBloodEffects)
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// Check if we've reached the maximum size
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if (PoolSize >= MaxPoolSize)
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{
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{
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PoolSize = MaxPoolSize;
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// Remove the oldest blood effect
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bIsExpanding = false;
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if (ActiveBloodEffects[0])
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GetWorldTimerManager().ClearTimer(ExpansionTimerHandle);
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{
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ActiveBloodEffects[0]->DestroyComponent();
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}
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ActiveBloodEffects.RemoveAt(0);
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}
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// Create a rotation from the direction
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FRotator Rotation = Direction.Rotation();
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// Spawn the blood effect
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UNiagaraComponent* BloodEffect = UNiagaraFunctionLibrary::SpawnSystemAtLocation(
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GetWorld(),
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BloodSpraySystem,
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Location,
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Rotation,
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FVector(Intensity),
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true,
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true,
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ENCPoolMethod::AutoRelease
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);
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if (BloodEffect)
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{
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// Set the intensity parameter if it exists
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BloodEffect->SetFloatParameter(FName("Intensity"), Intensity);
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// Add to active blood effects
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ActiveBloodEffects.Add(BloodEffect);
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}
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}
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}
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// Update the pool size
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UpdatePoolSize();
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AActor* UBloodSystem::CreateBloodPool(const FVector& Location, float Size)
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{
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// Ensure we have a valid blood pool class
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if (!BloodPoolClass)
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{
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return nullptr;
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}
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// Manage the number of active blood pools
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if (ActiveBloodPools.Num() >= MaxBloodPools)
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{
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// Remove the oldest blood pool
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if (ActiveBloodPools[0])
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{
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ActiveBloodPools[0]->Destroy();
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}
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ActiveBloodPools.RemoveAt(0);
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}
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// Spawn the blood pool
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FActorSpawnParameters SpawnParams;
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SpawnParams.Owner = GetOwner();
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SpawnParams.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AdjustIfPossibleButAlwaysSpawn;
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// Trace downward to find the floor
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FHitResult HitResult;
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FVector TraceStart = Location;
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FVector TraceEnd = Location - FVector(0, 0, 200.0f);
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FCollisionQueryParams QueryParams;
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QueryParams.AddIgnoredActor(GetOwner());
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if (GetWorld()->LineTraceSingleByChannel(HitResult, TraceStart, TraceEnd, ECC_Visibility, QueryParams))
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{
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// Spawn at the hit location
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AActor* BloodPool = GetWorld()->SpawnActor<AActor>(BloodPoolClass, HitResult.Location, FRotator::ZeroRotator, SpawnParams);
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if (BloodPool)
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{
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// Set the size of the blood pool
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BloodPool->SetActorScale3D(FVector(Size));
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// Add to active blood pools
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ActiveBloodPools.Add(BloodPool);
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return BloodPool;
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}
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}
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return nullptr;
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}
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UDecalComponent* UBloodSystem::ApplyBloodDecal(UPrimitiveComponent* Component, const FVector& Location, const FVector& Direction, float Size)
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{
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// Ensure we have a valid blood decal material
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if (!BloodDecalMaterial || !Component)
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{
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return nullptr;
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}
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// Manage the number of active blood decals
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if (ActiveBloodDecals.Num() >= MaxBloodDecals)
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{
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// Remove the oldest blood decal
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if (ActiveBloodDecals[0])
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{
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ActiveBloodDecals[0]->DestroyComponent();
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}
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ActiveBloodDecals.RemoveAt(0);
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}
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// Create a rotation from the direction (opposite to the direction for the decal to face outward)
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FRotator Rotation = (-Direction).Rotation();
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// Create the decal component
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UDecalComponent* DecalComponent = NewObject<UDecalComponent>(Component);
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DecalComponent->SetupAttachment(Component);
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DecalComponent->SetRelativeLocation(Component->GetComponentTransform().InverseTransformPosition(Location));
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DecalComponent->SetRelativeRotation(Component->GetComponentTransform().InverseTransformRotation(Rotation.Quaternion()));
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DecalComponent->SetDecalMaterial(BloodDecalMaterial);
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DecalComponent->DecalSize = FVector(10.0f, Size * 100.0f, Size * 100.0f);
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DecalComponent->RegisterComponent();
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// Add to active blood decals
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ActiveBloodDecals.Add(DecalComponent);
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return DecalComponent;
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}
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}
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