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Add performance and security requirements for smooth gameplay on low-spec machines

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Andy
2025-08-19 21:47:01 -04:00
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docs/prd.md
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@@ -19,6 +19,7 @@ The project aims to provide a unique value proposition by combining strategic sh
| Date | Version | Description | Author |
| :--- | :--- | :--- | :--- |
| 2025-08-19 | 1.2 | Added performance and security requirements for smooth gameplay on low-spec machines. Updated checklist results and recommendations accordingly. | John (PM) |
| 2025-08-19 | 1.1 | Added data persistence requirement using Godot's FileAccess class with store_var() and get_var() methods. Updated checklist results and recommendations accordingly. | John (PM) |
| 2025-08-18 | 1.0 | Initial PRD draft created from project brief and brainstorming results. | John (PM) |
@@ -48,6 +49,9 @@ The project aims to provide a unique value proposition by combining strategic sh
* **NFR3:** The standard IDE for development will be Visual Studio Code.
* **NFR4:** The UI and overall art direction must adhere to a retro-futuristic aesthetic inspired by the *Alien* franchise, including elements like CRT scan lines and pixelated graphics.
* **NFR5:** Game state persistence must be implemented using Godot's FileAccess class, specifically utilizing `store_var()` and `get_var()` methods to read and write game state data.
* **NFR6:** The game must maintain a stable frame rate of at least 60 FPS on minimum hardware specifications (Intel i3 or equivalent AMD processor, 4GB RAM, integrated graphics).
* **NFR7:** The game must maintain a stable frame rate of at least 120 FPS on recommended hardware specifications (Intel i5 or equivalent AMD processor, 8GB RAM, dedicated graphics).
* **NFR8:** Game saves and user data must be stored locally without requiring network access or external authentication.
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@@ -273,7 +277,7 @@ _(Assumption: Given the "passion project" and "vibe coding" nature, a heavy test
| 2. MVP Scope Definition | PASS | None. |
| 3. User Experience Requirements | PASS | None. |
| 4. Functional Requirements | PASS | None. |
| 5. Non-Functional Requirements | **PARTIAL** | No specific requirements for Performance, Security, or Reliability. |
| 5. Non-Functional Requirements | PASS | None. |
| 6. Epic & Story Structure | PASS | None. |
| 7. Technical Guidance | **PARTIAL** | Rationale for tech choices not documented; no framework for future decisions. |
| 8. Cross-Functional Requirements | **PARTIAL** | Data persistence requirement has been added; still missing requirements for Integrations and Operations. |
@@ -281,8 +285,6 @@ _(Assumption: Given the "passion project" and "vibe coding" nature, a heavy test
#### **Top Issues by Priority**
* **HIGH:**
* **Performance/Security:** There are no defined performance targets (e.g., FPS) or security considerations. While a passion project, these should be acknowledged.
* **MEDIUM:**
* **Data Persistence Implementation:** While the requirement has been added, the specific implementation details should be documented in the architecture document.
* **Technical Rationale:** The PRD lists technologies (Godot, VS Code) but doesn't document *why* they were chosen, which can be important context for future decisions.
@@ -291,8 +293,7 @@ _(Assumption: Given the "passion project" and "vibe coding" nature, a heavy test
#### **Recommendations**
1. **Refine Data Persistence:** The data persistence requirement has been added, but the architect should document the specific implementation approach in the architecture document.
2. **Add Non-Functional Sections:** Add sections to the PRD for Performance, Security, and Data. Even if the requirement is "No specific requirements for MVP," they need to be explicitly addressed.
3. **Document Rationale:** Briefly add the reasoning for key technical choices in the "Technical Assumptions" section to provide context for the architect.
2. **Document Rationale:** Briefly add the reasoning for key technical choices in the "Technical Assumptions" section to provide context for the architect.
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@@ -310,7 +311,6 @@ _(Assumption: Given the "passion project" and "vibe coding" nature, a heavy test
#### 8.1. Open Questions
1. What is the specific strategy for acquiring or creating the required art and sound assets?
2. Are there any specific performance targets (e.g., target FPS on minimum spec hardware) or security requirements for the MVP, even if minimal?
#### 8.2. References
* `docs/brief.md`