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Graph/seat-ownership-input-routing-mismatch

Pattern

Seat Ownership Input Routing

seat-ownership-input-routing-mismatch

Player control ownership and input routing fail because seat/controller logic is keyed to the wrong identity scope, causing ClientInput.PushScope/selection grabs to bind to the earliest occupant or inaccessible owners instead of the intended Connection/controller.

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Public graph metadata

Updated7/1/2026

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30 linked nodes

Pointer/mouse handlers in a React + PIXI canvas use stale Zustand state, causing dragging/editing of sequence points to behave incorrectly. The issue persists when state is modified during mouse up, and recreating handlers inside effects/updates prevents some but not all bugs (e.g., cannot drag twice).

PointerEvent wasn't properly simulated in the test environment

Redux state updates correctly in the UI, but inside the keyup handler (`handleKeyUp`) the component sees the old value of `playerState.isMenuUIVisible`. As a result, conditional logic (e.g., Escape handling) doesn’t run when expected.

the user is not properly logged out by the program, even after I click logout — on the `"Auth Required"` menu (`Auth.razor`). Tension: the expected logout behavior is only applied to the following pages. Outcome: This should resolve the loophole upon logout and user back navigation using the Blazor Identity options.

@PreAuthorize / @PostAuthorize checks cannot see Keycloak realm roles in realm_access

The app wasn't taking any inputs at all — I tried playing in the below code and wasn't getting any app inputs either. Tension: I can't get any user input from my device at all. Outcome: this is not a map specific problem.

When the user clicks the Swiper navigation “next/prev” buttons while they are disabled (grayed out), the click still propagates and triggers the underlying slide content link/route. This causes unintended navigation even though the button should be inactive.

the controller still accepts requests where the required header is an empty string ("") — using @RequestHeader to enforce required headers. Tension: I need to prevent. Outcome: without manually checking them inside the method?

The `MdcConfig` fields are bound correctly, but `SomeClass` sees `mdcConfig` as null and/or its derived field `mdcAllowedItems` ends up null. Breakpoints show `MdcConfig` setters are called, yet `SomeClass` initialization reads before injection.

QObject::connect(this, &QtClass::bar, this, [&msg](). Tension: access violation reading position, msg is out of scope.

CS0618: 'GameTransform.Position' is obsolete — s&box.

calling [Rpc.Host] from a client does nothing, calling [Rpc.Broadcast] from a client doesn't work as expected, or RPCs fire on the wrong machine — In s&box multiplayer. Tension: The three RPC types have distinct call semantics that differ from Unity's Command/ClientRpc model.

Developers don't know how to move an agent to a target, read its velocity for animation, or handle the case where UpdatePosition is true vs false — In s&box, AI navigation uses NavMeshAgent component. Tension: WishVelocity is the correct property to feed into a PlayerController for hybrid AI/physics movement.

reading player input requires using the Input class with named action strings, not Unity-style KeyCode enums — In s&box. Tension: Developers don't know the difference between Input.Down (held), Input.Pressed (just pressed this frame), and Input.Released (just released). Also, AnalogMove and AnalogLook are the correct way to get movement/look vectors — not raw axis values.

Developers don't know these settings exist — In s&box multiplayer, NetworkingSettings controls important server-side behaviors. Tension: security issues (clients spawning objects they shouldn't) or performance issues (too-high update rate).

Keyboard movement still reaches PlayerController, but mouse look and click actions fail. — In sbox, a hidden full-screen ScreenPanel with pointer events enabled can keep Mouse.Visibility Auto in UI mode. Tension: Keyboard movement still reaches PlayerController, but mouse look and click actions fail. Outcome: Separate menu and in-game pointer capture modes fix it.

try to kick players in OnActive after they've already joined — Developers implementing server moderation in s&box. Tension: store bans in memory only (lost on restart). Outcome: The correct approach uses INetworkListener.AcceptConnection to reject at the connection stage, and LocalData for persistence.

Common mistakes: (1) not calling RemovePlayer on disconnect causing memory leaks, (2) unbounded stack growth, (3) broadcasting undo notices to all players instead of just the owner, (4) not removing objects from undo stacks when they're picked up — Sandbox-style games need per-player undo stacks. Tension: allowing players to undo weapons out of other players' hands.

you cannot sync a `Connection` reference directly — In s&box. Outcome: physgun/toolgun access control needs to hook into the grab/select events, not be checked in the weapon code.

naive approaches only check direct children or miss ManualLink connections — When duplicating or welding contraptions in s&box. Tension: resulting in incomplete contraption captures. Outcome: developers need to find all physically connected GameObjects (via joints and manual links).

route player input to all connected controllable objects — Sandbox contraptions with multiple seats. Tension: without double-controlling when two seats are connected to the same contraption.

Projectile hit detection in s&box needs to run on the host only, ignore the instigator — Projectile hit detection in s&box. Tension: use ICollisionListener (not trigger volumes). Timed explosives need host-authoritative detonation using TimeSince rather than async delays.

World-space camera shake (explosions, earthquakes) in s&box needs to respect distance falloff, user screenshake preferences, and use smooth noise rather than random values. Tension: Sending UI notices to specific players requires Rpc.FilterInclude. Outcome: Sending UI notices to specific players requires Rpc.FilterInclude.

Fall damage in s&box fires on the owning client (via IPlayerEvents.OnLand) but damage must be applied on the host. — via IPlayerEvents.OnLand. Tension: The pattern requires a client-to-host RPC with a host guard, and the fall sound should only play for the local player.

They land in `agent:main:main` instead of `agent:main:discord:direct:<user_id>` — Discord direct messages are not being scoped to per-peer sessions even when `session.dmScope: "per-peer"` is set. Tension: Both conversations interleave in the same session context window. Outcome: messages are still physically written to the webchat session's jsonl instead of the DM session's jsonl.

Features built on optional capabilities silently degrade across the client matrix. Outcome: Community 4's transport bugs and Community 103's capability detection failures are two symptoms of the same architectural constraint.

Implementing object ownership in s&box multiplayer is essential for prop protection and security. — s&box multiplayer.

Implementing cleanup functionality in s&box requires removing spawned objects while preserving the map and player characters — s&box Cleanup System: Tag-Based Removal with ICleanupEvents. Tension: Filtering objects by tags (removable vs map entities). Outcome: Handling ownership for multiplayer cleanup.

Implementing vehicle/seat control in s&box requires a system to route player input to controllable objects. — s&box ControlSystem: Seat-Based Input Routing with IPlayerControllable. Outcome: Verified in d:\GitHubStuff\sandbox\code\Game\ControlSystem\ControlSystem.cs.

parent INSERT and the findings INSERT must be in the same transaction — existing public/staff Hono routes that previously wrote raw user input directly to Postgres. Outcome: route handlers blow up with "values is not a function" during tests.

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