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MRCalderon3DMRCalderon3D/everything-game-dev-code/skills/engineering-common/save-system-patterns/SKILL.md

save-system-patterns

Skill105 starsChanged 8 months agoMITView on GitHub

Define reliable persistence boundaries, save formats, recovery behavior, and migration policy.

The file

We split this skill into the rules it gives an agent

2 rules. About 0 are common, 2 are distinctive, and 0 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈2

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Keep this skill aligned with the relevant rules layer and current project documentation.

    line 58
  2. Distinctive:

    If engine-specific constraints materially change the workflow, hand off to the matching engine skill or engine-specific reviewer.

    line 59

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Save System Patterns

Purpose

Define reliable persistence boundaries, save formats, recovery behavior, and migration policy.

Use When

  • the game needs persistent progress or settings
  • save corruption risk exists
  • schema changes are likely

Inputs

  • state ownership map
  • progression model
  • platform limits
  • backward-compatibility expectations

Process

  1. identify what must persist and when
  2. design versioning and migration strategy
  3. handle partial writes, invalid data, and fallback behavior
  4. separate runtime objects from persistent data representation
  5. define tests and release gates for save compatibility

Outputs

  • save model
  • migration strategy
  • error-handling policy
  • save QA checklist

Quality Bar

  • makes ownership, state flow, and failure behavior explicit
  • improves maintainability without over-abstracting
  • supports testing, debugging, and safe iteration

Common Failure Modes

  • coupling systems through hidden globals or timing assumptions
  • writing logic that is hard to test or debug
  • optimizing the wrong layer before measuring

Related Agents

  • technical-design-lead
  • gameplay-programmer
  • qa-lead

Related Commands

  • save-system-review
  • tech-design
  • verify

Notes

  • Keep this skill aligned with the relevant rules layer and current project documentation.
  • If engine-specific constraints materially change the workflow, hand off to the matching engine skill or engine-specific reviewer.

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