Iterating over World Nodes

From C4 Engine Wiki

The following code snippet iterates over the nodes in a world.

Node *root = TheWorldMgr->GetWorld()->GetRootNode(); // start at the root
Node *node = root;
do
{
    if (node->GetNodeType() == kNodeGeometry)
    {
        // do something with a geometry node.
    }
 
    node = root->GetNextNode(node);
} while (node);

GetNextNode() performs a depth-first traversal of the tree. Since the root node of a world won't be a geometry, you could also start with the root's first subnode to save one iteration of the loop:

Node *node = root->GetFirstSubnode();

The above example looks for geometry nodes, but you could also search for any of the other node types.