You're breathtaking!

2020-12-07 23:40:54 +01:00
commit 6fb9eee74c
5143 changed files with 1153594 additions and 0 deletions
--- a/Source/Engine/Navigation/NavigationScene.cpp
+++ b/Source/Engine/Navigation/NavigationScene.cpp
@@ -0,0 +1,141 @@
+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+#include "NavigationScene.h"
+#include "NavMesh.h"
+#include "Navigation.h"
+#include "NavMeshBoundsVolume.h"
+#include "Engine/Profiler/ProfilerCPU.h"
+#include "Engine/Level/Scene/Scene.h"
+#include "Engine/Content/Assets/RawDataAsset.h"
+#include "Engine/Core/Log.h"
+#if USE_EDITOR
+#include "Editor/Editor.h"
+#endif
+#if COMPILE_WITH_ASSETS_IMPORTER
+#include "Engine/ContentImporters/AssetsImportingManager.h"
+#include "Engine/Serialization/MemoryWriteStream.h"
+#endif
+
+NavigationScene::NavigationScene(::Scene* scene)
+    : Scene(scene)
+    , IsDataDirty(false)
+{
+    DataAsset.Loaded.Bind<NavigationScene, &NavigationScene::OnDataAssetLoaded>(this);
+}
+
+BoundingBox NavigationScene::GetNavigationBounds()
+{
+    if (Volumes.IsEmpty())
+        return BoundingBox::Empty;
+
+    PROFILE_CPU_NAMED("GetNavigationBounds");
+
+    auto box = Volumes[0]->GetBox();
+    for (int32 i = 1; i < Volumes.Count(); i++)
+        BoundingBox::Merge(box, Volumes[i]->GetBox(), box);
+    return box;
+}
+
+NavMeshBoundsVolume* NavigationScene::FindNavigationBoundsOverlap(const BoundingBox& bounds)
+{
+    NavMeshBoundsVolume* result = nullptr;
+
+    for (int32 i = 0; i < Volumes.Count(); i++)
+    {
+        if (Volumes[i]->GetBox().Intersects(bounds))
+        {
+            result = Volumes[i];
+            break;
+        }
+    }
+
+    return result;
+}
+
+void NavigationScene::SaveNavMesh()
+{
+#if COMPILE_WITH_ASSETS_IMPORTER
+
+#if USE_EDITOR
+    // Skip if game is running in editor (eg. game scripts update dynamic navmesh)
+    if (Editor::IsPlayMode)
+        return;
+#endif
+
+    // Clear flag
+    IsDataDirty = false;
+
+    // Check if has no navmesh data generated (someone could just remove navmesh volumes or generate for empty scene)
+    if (Data.Tiles.IsEmpty())
+    {
+        // Keep asset reference valid
+        DataAsset.Unlink();
+        return;
+    }
+
+    // Prepare
+    Guid assetId = DataAsset.GetID();
+    if (!assetId.IsValid())
+        assetId = Guid::New();
+    const String assetPath = Scene->GetDataFolderPath() / TEXT("NavMesh") + ASSET_FILES_EXTENSION_WITH_DOT;
+
+    // Generate navmesh tiles data
+    const int32 streamInitialCapacity = Math::RoundUpToPowerOf2((Data.Tiles.Count() + 1) * 1024);
+    MemoryWriteStream stream(streamInitialCapacity);
+    Data.Save(stream);
+    BytesContainer bytesContainer;
+    bytesContainer.Link(stream.GetHandle(), stream.GetPosition());
+
+    // Save asset to file
+    if (AssetsImportingManager::Create(AssetsImportingManager::CreateRawDataTag, assetPath, assetId, (void*)&bytesContainer))
+    {
+        LOG(Warning, "Failed to save navmesh tiles data to file.");
+        return;
+    }
+
+    // Link the created asset
+    DataAsset = assetId;
+
+#endif
+}
+
+void NavigationScene::OnEnable()
+{
+    auto navMesh = Navigation::GetNavMesh();
+    if (navMesh)
+        navMesh->AddTiles(this);
+}
+
+void NavigationScene::OnDisable()
+{
+    auto navMesh = Navigation::GetNavMesh();
+    if (navMesh)
+        navMesh->RemoveTiles(this);
+}
+
+void NavigationScene::OnDataAssetLoaded()
+{
+    // Skip if already has data (prevent reloading navmesh on saving)
+    if (Data.Tiles.HasItems())
+        return;
+
+    const bool isEnabled = Scene->IsDuringPlay() && Scene->IsActiveInHierarchy();
+
+    // Remove added tiles
+    if (isEnabled)
+    {
+        OnDisable();
+    }
+
+    // Load navmesh tiles
+    BytesContainer data;
+    data.Link(DataAsset->Data);
+    Data.Load(data, false);
+    IsDataDirty = false;
+
+    // Add loaded tiles
+    if (isEnabled)
+    {
+        OnEnable();
+    }
+}