Filtering Entities in Bevy with With and Without
Learn how to combine inclusion and exclusion criteria in Bevy ECS queries using With<T> and Without<T> to keep systems clean and avoid manual loops.
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bevyengineDiagnosing Invisible 3D Entities in Bevy: A Camera, Asset, and Lighting Checklist
When a Bevy window clears to the background color but spawned meshes never appear, the cause is usually camera targeting, asset readiness, visibility, lighting, or render layers. This guide maps symptoms to diagnostics and provides ordered checks and fixes.
Controlling Frame Time in Bevy with Chunked Query Iteration
Bevy's ECS lets you cap per-frame entity updates with chunked query iteration. See a worked Rust example, chunk-size trade-offs, and common pitfalls when mutating components.
Balancing Bevy ECS Query Performance: Plain vs. Filtered Queries
Learn when to use Bevy's Changed filter versus plain queries to optimize your ECS performance and avoid unnecessary per-entity overhead.
Reacting to Component Changes in Bevy with Changed<T> Filters
Use Bevy's Changed<T> and Added<T> query filters to run systems only when components actually mutate, with a counter-based check to verify the filter works.
Harnessing Bevy Queries: Parallel, Change‑Aware Data Access in ECS
Bevy’s Query type lets systems declare precise, parallel‑friendly data access. Learn how With/Without/Changed filters work, see a full example that moves entities, and understand the trade‑offs of mutable access and API instability.
Unlocking Bevy’s Parallel Scheduler: When More Cores Mean Faster Games
Bevy’s ECS scheduler can run independent systems in parallel, boosting CPU performance. Learn how to enable, tune, and verify parallel execution, and understand the trade‑offs that come with it.
Using Bevy's FixedUpdate Schedule for Deterministic Game Logic
Learn how to use Bevy's FixedUpdate schedule for deterministic logic, set a fixed timestep, avoid spiral of death, and keep rendering smooth.
Hot‑Reloading Assets in Bevy: Setup, Benefits, and Limits
Learn how Bevy’s AssetServer watches files and updates handles at runtime, see a sprite demo, and understand the trade‑offs between debug and release builds.