OpenTTD Development • Re: OpenTTD Squirrel Debugger & Profiler for AI / GameScript

It's me again! Did you know that with sqdbg you can profile your GameScript or AI?

Check out the functions available in the API, copied from the sqdbg repository:

Code:

sqdbg_prof_start Enable profiler and start collecting datasqdbg_prof_stop Disable profiler and remove all collected datasqdbg_prof_pause Pause profilersqdbg_prof_resume Resume paused profiler. Should be placed in the same call frame as pausesqdbg_prof_gets Get a profile report of the current or specified thread, or the specified block as a string. Parameter optionally takes a thread, and requires group name or report type (0: call graph, 1: flat). E.g.: sqdbg_prof_gets(1) or sqdbg_prof_gets(thread, 1). Measured peak times are ignored in total and average times in block reports.

Profiling with Debug Console

• Start a debugging session.
• Open Debug Console in VS Code (Ctrl+Shift+Y on Windows).
• In the text input field, type sqdbg_prof_start() and press Enter.
• Then type sqdbg_prof_gets(1) and press Enter.
• You should get something like:

Profiling with VS Code Addon

You can do the same with the VS Code addon: Download sqdbg-profiler-vs 0.1.0.vsix Source code: https://github.com/PaSaSaP/sqdbg-profiler-vs

• Start a debugging session so the addon can read data from it.
• Select the command: Open Squirrel Profiler from the command palette.
• Click Start.
• Click Update.
• You should get something like:

Enjoy!

Statistics: Posted by MustBe — 22 Mar 2026 09:22