Outline
Through Document Symbols, the Haxe extension also adds support for VSCode's built-in Outline view. It can be opened with the File: Focus on Outline command:
With the Follow Cursor option, the outline can be configured to automatically highlight the symbol your cursor is located in as you move through the document:
You might also want to consider switching to Sort By: Position for symbols to be listed in the same order as they appear in the source file.
The same underlying outline data can also be presented in a different way with Breadcrumbs Navigation:
You can enable breadcrumbs with the Toggle Breadcrumbs command or by adding the following to your settings manually:
"breadcrumbs.enabled": true