Debugging

This section collects tools and techniques for understanding, inspecting, and iterating on your Gum UI while your game is running.

• Hot Reload — push changes saved in the Gum tool into the running game without restarting, so you can adjust layouts, colors, and component structure and see the results immediately.
• Runtime Snapshot — export the live UI tree to a Gum project you can open and inspect in the tool; the reverse of hot reload, and especially useful for code-only UIs.

See also

Some debugging guidance lives alongside the subsystem it relates to:

• Troubleshooting Events — diagnosing why clicks, hovers, and other input are not reaching a control.
• Measuring Draw Calls — inspecting how many draw calls your UI produces.
• Measuring Layout Calls — finding excessive layout work.
• Files and Fonts Troubleshooting — resolving missing textures, fonts, and content-path problems.