110 lines
2.7 KiB
C++
110 lines
2.7 KiB
C++
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// Copyright 2020 Phyronnaz
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#include "VoxelComponents/VoxelPhysicsRelevancyComponent.h"
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#include "VoxelRender/IVoxelLODManager.h"
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#include "VoxelWorld.h"
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#include "EngineUtils.h"
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#include "TimerManager.h"
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#include "Components/PrimitiveComponent.h"
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UVoxelPhysicsRelevancyComponent::UVoxelPhysicsRelevancyComponent()
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{
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PrimaryComponentTick.bCanEverTick = true;
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}
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void UVoxelPhysicsRelevancyComponent::BeginPlay()
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{
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VOXEL_FUNCTION_COUNTER();
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Super::BeginPlay();
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for (UActorComponent* Component : GetOwner()->GetComponents())
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{
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if (UPrimitiveComponent* PrimitiveComponent = Cast<UPrimitiveComponent>(Component))
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{
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if (PrimitiveComponent->BodyInstance.bSimulatePhysics)
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{
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PrimitiveComponentsWithPhysicsEnabled.Add(PrimitiveComponent);
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}
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}
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}
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if (PrimitiveComponentsWithPhysicsEnabled.Num() == 0)
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{
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SetComponentTickEnabled(false);
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}
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SetComponentTickInterval(TickInterval);
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}
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void UVoxelPhysicsRelevancyComponent::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
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{
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VOXEL_FUNCTION_COUNTER();
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Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
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if (PrimitiveComponentsWithPhysicsEnabled.Num() == 0)
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{
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return;
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}
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bool bShouldSimulatePhysics = false;
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const FVector Position = GetOwner()->GetActorLocation();
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for (TActorIterator<AVoxelWorld> It(GetWorld()); It; ++It)
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{
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auto* World = *It;
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if (World->IsCreated())
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{
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auto LocalPosition = World->GlobalToLocal(Position);
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auto& LODManager = World->GetLODManager();
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if (LODManager.Settings.WorldBounds.Contains(LocalPosition))
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{
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uint8 LOD;
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if (LODManager.AreCollisionsEnabled(LocalPosition, LOD) && LOD <= MaxVoxelChunksLODForPhysics)
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{
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bShouldSimulatePhysics = true;
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break;
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}
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}
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}
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}
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if (bArePhysicsEnabled != bShouldSimulatePhysics)
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{
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if (bShouldSimulatePhysics)
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{
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if (!bWaitingToBeActivated)
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{
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auto& TimerManager = GetWorld()->GetTimerManager();
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TimerManager.SetTimer(Handle, this, &UVoxelPhysicsRelevancyComponent::ActivatePhysics, TimeToWaitBeforeActivating);
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bWaitingToBeActivated = true;
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}
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}
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else
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{
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if (bWaitingToBeActivated)
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{
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auto& TimerManager = GetWorld()->GetTimerManager();
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TimerManager.ClearTimer(Handle);
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bWaitingToBeActivated = false;
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}
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bArePhysicsEnabled = false;
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for (auto& Component : PrimitiveComponentsWithPhysicsEnabled)
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{
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Component->SetSimulatePhysics(false);
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}
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}
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}
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}
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void UVoxelPhysicsRelevancyComponent::ActivatePhysics()
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{
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VOXEL_FUNCTION_COUNTER();
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bWaitingToBeActivated = false;
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bArePhysicsEnabled = true;
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for (auto& Component : PrimitiveComponentsWithPhysicsEnabled)
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{
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Component->SetSimulatePhysics(true);
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}
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}
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