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AStarGrid2D in Godot 4: the gotchas, and an interactive sandbox
Fair suspicion in 2026. AI can write it! , which is exactly why I built the sandbox instead of leaving this as a wall of advice. The useful part is meant to be testable version specific AStarGrid2D behavior, reproduced gotchas, and an interactive grid you can poke at. If you see a specific mistake, vague claim, or Godot-version mismatch, point me to it and I’ll fix it.