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Graph/effect-lifetime-mismatch

Pattern

World-Space Effects Cut Off

effect-lifetime-mismatch

Game effects tied to scene objects (particles, sounds, camera shake) get destroyed or unspawned mid-play, so playback never completes. The misstep is not keeping effect lifetimes in sync with post-setup/emission triggers.

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Updated7/29/2026

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30 linked nodes

fades into transparency — an absolutely positioned backdrop blur. Outcome: I am not getting the same effect.

Resetting the timer by lifting/resetting state in the parent causes the app/game to become unresponsive due to frequent re-renders. The Timer component also attempts to reset its local state during render, leading to problematic behavior.

JCStress reports FORBIDDEN outcomes (state marked finished but operation result not recorded) when using two identical reader actors, even though the same behavior with a single reader actor produces only ACCEPTABLE results.

Using Sound.Play without a position plays 2D (no attenuation) — In s&box. Tension: Developers coming from Unity look for AudioSource.PlayClipAtPoint or similar, but s&box uses a different API. Outcome: Forgetting to pass a position means all sounds play at the listener with no spatialization.

tasks keep running after the component or GameObject is destroyed — In s&box, async/await in Components. Tension: Using raw Task.Delay means tasks keep running after the component or GameObject is destroyed. Outcome: causing null reference exceptions and ghost behavior.

spawning particle effects at runtime requires using the ParticleEffect component system or cloning a prefab that contains particle components — In s&box. Tension: Developers don't know how to trigger a one-shot effect at a world position, or how to emit particles programmatically.

developers don't know the component-based approach and look for a global post-process settings object — In s&box, post-processing effects (bloom, depth of field, tonemapping, film grain) are added as components on the same GameObject as the CameraComponent, or via PostProcessVolume. Tension: developers don't know the component-based approach. Outcome: or via PostProcessVolume for zone-based blending.

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).

Tension: The change is not propagated to clients. Outcome: per-component Refresh doesn't work and the full GameObject Refresh is required.

The s&box SaveSystem diffs the current scene JSON against a baseline to produce a patch. Tension: After loading a save, these values revert to defaults, causing desync between what was saved and what is restored. Outcome: health, ammo, custom networked state.

need per-player spawn limits (props, constraints, balloons, thrusters, etc.) — Sandbox games.

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.

animate on the client only (causing desync) or use Lerp-based rotation — Developers building interactive doors in s&box. Tension: doesn't support custom easing. Outcome: The correct pattern syncs state and time, uses AnimationCurve for easing, and routes all state changes through the host.

Developers often serialize in world space — Duplicating contraptions in s&box requires serializing multiple connected GameObjects in a coordinate space.

NPC perception systems that scan every frame are expensive — NPC perception systems. Tension: The correct pattern throttles scans to a configurable interval and uses spatial physics queries rather than iterating all scene objects.

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.

Pickup items in s&box can be triggered by both trigger volumes and physics collisions. — Without a `IsDestroyed` guard. Tension: both can fire simultaneously causing double-pickup. Outcome: Sound should be 2D for the local player and 3D for others.

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.

Melee weapons in s&box need sphere traces with hitboxes, different cooldowns for hit vs miss, and impact decals parented to the closest bone on skinned models. — s&box melee weapon. Tension: Camera effects should only apply locally. Outcome: From MeleeWeapon.cs.

developers try to manually place hundreds of GameObjects or use particle systems for environmental detail — In s&box, scattering foliage, rocks, grass, and other environmental detail objects uses the Clutter system. Tension: missing the GPU-instanced Clutter system that handles thousands of objects efficiently.

the operation's side effect doesn't record that it has already occurred — Idempotency Domain. Tension: re-execution produces duplicate effects.

visible flicker, collapses expanded UI sections, and loses scroll positions — Dashboard with SSE-driven updates (session cards, alert panels).

performance-sensitive subsystems — game engines.

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 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.

when the server mutates the list. Tension: they only happen when two actions land in the same tick. Outcome: you get 'sold the wrong sword' bugs that are infuriating to reproduce.

Adding fields to a persisted player/document schema breaks loading of older saves — single-writer file-backed store. Outcome: every read produces a current-shape object.

All animations were completely static. Headless Playwright changedFrac locked at ~0.005 (threshold > 0.02). — In a React Three Fiber scene driven by a Zustand store. Outcome: changedFrac rose from 0.005 to well above 0.02 threshold.

renders correctly in Chromium but never progresses visually in Firefox — An animated InstancedMesh scene (lerping between Poisson-disk positions and a Cartesian grid). Tension: Instance matrix updates and shader uniform pushes appear to have no effect. Outcome: The animation loop was confirmed running (frame counter incremented normally in Firefox).

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