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Implement Replay Recording and Playback Engine #47
Description
Description
Build a replay system that records every player action during a session as a timestamped event log and supports deterministic playback of that log. Replays let players review their own solutions, serve as proof-of-solve for on-chain achievement verification, and provide debugging data for the puzzle design team. Replay files should be compact, portable, and verifiable.
Acceptance Criteria
- A
replaymodule exists atsrc/replay/mod.rs -
ReplayEventenum covers all recordable actions:HintReveal,AnswerAttempt,SessionStart,SessionEnd - Events are recorded with microsecond timestamps relative to session start
- Completed replays are serialized to a
.qreplaybinary file in the saves directory -
--playback <file>CLI flag loads and replays a.qreplayfile, reproducing all events in order - Playback speed is configurable (1x, 2x, 4x) via a CLI argument
- Replay files include the puzzle content hash for integrity cross-checking on playback
- A replay summary (total time, hints used, attempt count, final score) is printed at playback end
- Unit tests cover event recording, serialization roundtrip, deterministic playback, and integrity mismatch detection
Activity
Menjay7 commentedon Jul 20, 2026
Hi! I came across this issue and would love to work on it. I have experience with similar tasks and I'm confident I can investigate, implement a clean solution, and thoroughly test it before submitting a PR. If the issue is still open, I would appreciate it if you could assign it to me. Thank you!
mac-dubem commentedon Jul 20, 2026
I'd love to work on this issue. I can build a deterministic replay system with efficient event recording, portable replay files, configurable playback, integrity verification, and comprehensive tests to ensure reliable playback and validation.
grantfox-oss commentedon Jul 21, 2026
🦊 GrantFox — @mac-dubem has been assigned to this issue as part of the Official Campaign | FWC26 campaign!
Next steps:
Closes #47)Good luck! Track your progress on GrantFox.
Xaxxoo commentedon Aug 21, 2026
Hi, can I take up on this issue please ?
grantfox-oss commentedon Aug 21, 2026
🦊 GrantFox — @Xaxxoo has been assigned to this issue as part of the Third Campaign campaign!
Next steps:
Closes #47)Good luck! Track your progress on GrantFox.
feat(replay): implement replay recording and playback engine (#47)
grantfox-oss commentedon Aug 23, 2026
🎉 This issue has been marked as completed on GrantFox as part of the Third Campaign campaign!
@Xaxxoo's PR #57 was approved and merged by @Mkalbani.
🏆 @Xaxxoo: You earned 40 FoxPoints for this contribution! Your current tier: Builder (1,428 total points). Track your full progress on GrantFox.
👏 Great work, @Xaxxoo! Keep contributing to MindFlowInteractive.