Question 1

How to pause the game in ecs-lib?

Accepted Answer

Set the world's timeScale property to 0, which stops all movement by zeroing the delta parameter in system updates. However, you may need to manually handle input events to prevent actions during pause, as noted in the documentation.

Question 2

ecs-lib vs bitECS for JavaScript games?

Accepted Answer

ecs-lib focuses on simplicity and flexibility with a TypeScript-first approach, while bitECS is optimized for performance with archetype-based memory layout. Choose ecs-lib for ease of use and prototyping; bitECS for high-performance, large-scale games.

Question 3

Can ecs-lib be used with Three.js?

Accepted Answer

Yes, the example in the README integrates Three.js for 3D rendering, showing how to attach Object3D components to entities. It's designed to work in web browsers, making it compatible with WebGL libraries.

Question 4

What are the lifecycle hooks in ecs-lib systems?

Accepted Answer

Systems can implement enter, change, and exit methods to react to entity changes. Enter triggers when entities gain matching components, change on component updates, and exit when components are removed, useful for initialization and cleanup.

Question 5

Is ecs-lib good for mobile browser games?

Accepted Answer

It can work for lightweight mobile games due to its small size and browser compatibility, but performance depends on careful management of components and systems, as the flexible architecture may incur overhead on resource-constrained devices.

Question 6

How to limit system updates per second in ecs-lib?

Accepted Answer

Pass a frequency parameter in the system constructor (e.g., 25 for 25 FPS) to control how often the update method runs. This helps optimize performance by reducing processing costs for systems like physics, as explained in the documentation.

ecs-lib

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