Cherry-pick: expose the check_events method to GDScript

[JoltedJon]

Brings in godotengine/godot#106112

Summary by CodeRabbit

• New Features
  • Added a way to retrieve the next queued ENet event without waiting, including its event type, peer, associated data, and channel.
  • Received packets are queued on the associated peer when events are checked.
• Documentation
  • Clarified that queued events should be checked after each service call until the queue is empty, and that checks can be made on either host involved in an event.
  • Clarified that errors can be reported by either service calls or event checks.

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 690d983 and e565cf2.

📒 Files selected for processing (1)

• modules/enet/enet_connection.cpp

🚧 Files skipped from review as they are similar to previous changes (1)

• modules/enet/enet_connection.cpp

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Walkthrough

Adds ENetConnection.check_events() to retrieve one queued event without waiting. The method returns event details and queues received packets on a valid peer. Documentation describes the returned array, when to drain events, and errors from the method.

Changes

ENet event polling

Layer / File(s)	Summary
Event polling API and behavior modules/enet/enet_connection.h, modules/enet/enet_connection.cpp, modules/enet/doc_classes/ENetConnection.xml	Declares and implements _check_events(), exposes it as check_events(), and documents its return data, event-draining guidance, and error event.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant Script
  participant ENetConnection
  participant ENetHost
  Script->>ENetConnection: call check_events()
  ENetConnection->>ENetHost: poll without timeout
  ENetHost-->>ENetConnection: return event fields
  ENetConnection-->>Script: return event array

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Suggested reviewers: mcdubhghlas, generalprotectionfault

Merge Risk: ⚪ Minimal · up to e565c

The queued-event polling API preserves existing event handling and matches its documentation. No actionable merge-blocking risk remains after normal checks.

Architecture Summary

Architecture risk: 🔵 Low · up to 690d9

The change affects 1 system.

Changed systems: modules

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — modules (service) was modified; 3 changed files map to changed impact.

Before / after behavior

• observed — Modified behavior in modules/enet/doc_classes/ENetConnection.xml: Added documentation for check_events, including its four-element event array, packet queuing for receive events, draining queued events after each frame/tick's service call, and availability on either host involved in an event.
• observed — Modified behavior in modules/enet/doc_classes/ENetConnection.xml: Expanded the EVENT_ERROR description to include errors from check_events, in addition to service.
• observed — Modified behavior in modules/enet/enet_connection.cpp: Added _check_events() to retrieve and package one queued event; received packets are queued on the event’s valid peer, matching the packet handling used by _service().
• observed — Modified behavior in modules/enet/enet_connection.cpp: Registered _check_events() as the script-facing check_events() method.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the main change: exposing the check_events method to GDScript. It matches the documented implementation and the pull request objective.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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Inline comments:
Review comments at @modules/enet/enet_connection.cpp:
- Line 344: Update the wrapper around check_events so a negative native return
sets event_type to EVENT_ERROR; preserve the existing event value handling for
nonnegative returns.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository: Redot-Engine/redot-engine/.coderabbit.yaml

Review profile: CHILL

Plan: Advanced

Run ID: 1cb48b28-fc29-4e6f-b29e-1e65458de7c5

📥 Commits

Reviewing files that changed from the base of the PR and between 80d31f7 and 690d983.

📒 Files selected for processing (3)

• modules/enet/doc_classes/ENetConnection.xml
• modules/enet/enet_connection.cpp
• modules/enet/enet_connection.h

Included review availability: This review used your included allowance. Your plan provides up to 8 included reviews per hour; 5 remain after this review.