C++ OffMeshConnection类代码示例

void NavigationMesh::CollectGeometries(Vector<NavigationGeometryInfo>& geometryList)
{
    ATOMIC_PROFILE(CollectNavigationGeometry);

    // Get Navigable components from child nodes, not from whole scene. This makes it possible to partition
    // the scene into several navigation meshes
    PODVector<Navigable*> navigables;
    node_->GetComponents<Navigable>(navigables, true);

    HashSet<Node*> processedNodes;
    for (unsigned i = 0; i < navigables.Size(); ++i)
    {
        if (navigables[i]->IsEnabledEffective())
            CollectGeometries(geometryList, navigables[i]->GetNode(), processedNodes, navigables[i]->IsRecursive());
    }

    // Get offmesh connections
    Matrix3x4 inverse = node_->GetWorldTransform().Inverse();
    PODVector<OffMeshConnection*> connections;
    node_->GetComponents<OffMeshConnection>(connections, true);

    for (unsigned i = 0; i < connections.Size(); ++i)
    {
        OffMeshConnection* connection = connections[i];
        if (connection->IsEnabledEffective() && connection->GetEndPoint())
        {
            const Matrix3x4& transform = connection->GetNode()->GetWorldTransform();

            NavigationGeometryInfo info;
            info.component_ = connection;
            info.boundingBox_ = BoundingBox(Sphere(transform.Translation(), connection->GetRadius())).Transformed(inverse);

            geometryList.Push(info);
        }
    }

    // Get nav area volumes
    PODVector<NavArea*> navAreas;
    node_->GetComponents<NavArea>(navAreas, true);
    areas_.Clear();
    for (unsigned i = 0; i < navAreas.Size(); ++i)
    {
        NavArea* area = navAreas[i];
        if (area->IsEnabledEffective())
        {
            NavigationGeometryInfo info;
            info.component_ = area;
            info.boundingBox_ = area->GetWorldBoundingBox();
            geometryList.Push(info);
            areas_.Push(WeakPtr<NavArea>(area));
        }
    }
}

PODVector<OffMeshConnection*> DynamicNavigationMesh::CollectOffMeshConnections(const BoundingBox& bounds)
{
    PODVector<OffMeshConnection*> connections;
    node_->GetComponents<OffMeshConnection>(connections, true);
    for (unsigned i = 0; i < connections.Size(); ++i)
    {
        OffMeshConnection* connection = connections[i];
        if (!(connection->IsEnabledEffective() && connection->GetEndPoint()))
        {
            // discard this connection
            connections.Erase(i);
            --i;
        }
    }

    return connections;
}

void DynamicNavigationMesh::DrawDebugGeometry(DebugRenderer* debug, bool depthTest)
{
    if (!debug || !navMesh_ || !node_)
        return;

    const Matrix3x4& worldTransform = node_->GetWorldTransform();

    const dtNavMesh* navMesh = navMesh_;

    for (int z = 0; z < numTilesZ_; ++z)
    {
        for (int x = 0; x < numTilesX_; ++x)
        {
            // Get the layers from the tile-cache
            const dtMeshTile* tiles[TILECACHE_MAXLAYERS];
            int tileCount = navMesh->getTilesAt(x, z, tiles, TILECACHE_MAXLAYERS);
            for (int i = 0; i < tileCount; ++i)
            {
                const dtMeshTile* tile = tiles[i];
                if (!tile)
                    continue;

                for (int i = 0; i < tile->header->polyCount; ++i)
                {
                    dtPoly* poly = tile->polys + i;
                    for (unsigned j = 0; j < poly->vertCount; ++j)
                    {
                        debug->AddLine(
                            worldTransform * *reinterpret_cast<const Vector3*>(&tile->verts[poly->verts[j] * 3]),
                            worldTransform * *reinterpret_cast<const Vector3*>(&tile->verts[poly->verts[(j + 1) % poly->vertCount] * 3]),
                            Color::YELLOW,
                            depthTest
                            );
                    }
                }
            }
        }
    }

    Scene* scene = GetScene();
    if (scene)
    {
        // Draw Obstacle components
        if (drawObstacles_)
        {
            PODVector<Node*> obstacles;
            scene->GetChildrenWithComponent<Obstacle>(obstacles, true);
            for (unsigned i = 0; i < obstacles.Size(); ++i)
            {
                Obstacle* obstacle = obstacles[i]->GetComponent<Obstacle>();
                if (obstacle && obstacle->IsEnabledEffective())
                    obstacle->DrawDebugGeometry(debug, depthTest);
            }
        }

        // Draw OffMeshConnection components
        if (drawOffMeshConnections_)
        {
            PODVector<Node*> connections;
            scene->GetChildrenWithComponent<OffMeshConnection>(connections, true);
            for (unsigned i = 0; i < connections.Size(); ++i)
            {
                OffMeshConnection* connection = connections[i]->GetComponent<OffMeshConnection>();
                if (connection && connection->IsEnabledEffective())
                    connection->DrawDebugGeometry(debug, depthTest);
            }
        }

        // Draw NavArea components
        if (drawNavAreas_)
        {
            PODVector<Node*> areas;
            scene->GetChildrenWithComponent<NavArea>(areas, true);
            for (unsigned i = 0; i < areas.Size(); ++i)
            {
                NavArea* area = areas[i]->GetComponent<NavArea>();
                if (area && area->IsEnabledEffective())
                    area->DrawDebugGeometry(debug, depthTest);
            }
        }
    }
}

void NavigationMesh::GetTileGeometry(NavBuildData* build, Vector<NavigationGeometryInfo>& geometryList, BoundingBox& box)
{
    Matrix3x4 inverse = node_->GetWorldTransform().Inverse();

    for (unsigned i = 0; i < geometryList.Size(); ++i)
    {
        if (box.IsInsideFast(geometryList[i].boundingBox_) != OUTSIDE)
        {
            const Matrix3x4& transform = geometryList[i].transform_;

            if (geometryList[i].component_->GetType() == OffMeshConnection::GetTypeStatic())
            {
                OffMeshConnection* connection = static_cast<OffMeshConnection*>(geometryList[i].component_);
                Vector3 start = inverse * connection->GetNode()->GetWorldPosition();
                Vector3 end = inverse * connection->GetEndPoint()->GetWorldPosition();

                build->offMeshVertices_.Push(start);
                build->offMeshVertices_.Push(end);
                build->offMeshRadii_.Push(connection->GetRadius());
                build->offMeshFlags_.Push((unsigned short)connection->GetMask());
                build->offMeshAreas_.Push((unsigned char)connection->GetAreaID());
                build->offMeshDir_.Push((unsigned char)(connection->IsBidirectional() ? DT_OFFMESH_CON_BIDIR : 0));
                continue;
            }
            else if (geometryList[i].component_->GetType() == NavArea::GetTypeStatic())
            {
                NavArea* area = static_cast<NavArea*>(geometryList[i].component_);
                NavAreaStub stub;
                stub.areaID_ = (unsigned char)area->GetAreaID();
                stub.bounds_ = area->GetWorldBoundingBox();
                build->navAreas_.Push(stub);
                continue;
            }

#ifdef ATOMIC_PHYSICS
            CollisionShape* shape = dynamic_cast<CollisionShape*>(geometryList[i].component_);
            if (shape)
            {
                switch (shape->GetShapeType())
                {
                case SHAPE_TRIANGLEMESH:
                    {
                        Model* model = shape->GetModel();
                        if (!model)
                            continue;

                        unsigned lodLevel = shape->GetLodLevel();
                        for (unsigned j = 0; j < model->GetNumGeometries(); ++j)
                            AddTriMeshGeometry(build, model->GetGeometry(j, lodLevel), transform);
                    }
                    break;

                case SHAPE_CONVEXHULL:
                    {
                        ConvexData* data = static_cast<ConvexData*>(shape->GetGeometryData());
                        if (!data)
                            continue;

                        unsigned numVertices = data->vertexCount_;
                        unsigned numIndices = data->indexCount_;
                        unsigned destVertexStart = build->vertices_.Size();

                        for (unsigned j = 0; j < numVertices; ++j)
                            build->vertices_.Push(transform * data->vertexData_[j]);

                        for (unsigned j = 0; j < numIndices; ++j)
                            build->indices_.Push(data->indexData_[j] + destVertexStart);
                    }
                    break;

                case SHAPE_BOX:
                    {
                        unsigned destVertexStart = build->vertices_.Size();

                        build->vertices_.Push(transform * Vector3(-0.5f, 0.5f, -0.5f));
                        build->vertices_.Push(transform * Vector3(0.5f, 0.5f, -0.5f));
                        build->vertices_.Push(transform * Vector3(0.5f, -0.5f, -0.5f));
                        build->vertices_.Push(transform * Vector3(-0.5f, -0.5f, -0.5f));
                        build->vertices_.Push(transform * Vector3(-0.5f, 0.5f, 0.5f));
                        build->vertices_.Push(transform * Vector3(0.5f, 0.5f, 0.5f));
                        build->vertices_.Push(transform * Vector3(0.5f, -0.5f, 0.5f));
                        build->vertices_.Push(transform * Vector3(-0.5f, -0.5f, 0.5f));

                        const unsigned indices[] = {
                            0, 1, 2, 0, 2, 3, 1, 5, 6, 1, 6, 2, 4, 5, 1, 4, 1, 0, 5, 4, 7, 5, 7, 6,
                            4, 0, 3, 4, 3, 7, 1, 0, 4, 1, 4, 5
                        };

                        for (unsigned j = 0; j < 36; ++j)
                            build->indices_.Push(indices[j] + destVertexStart);
                    }
                    break;

                default:
                    break;
                }

                continue;
            }
#endif
//.........这里部分代码省略.........