Hello, bitECS / Andrew Wooldridge

Andrew Wooldridge

📜JavaScript developer. 🐲RPG fan. 📚Storyteller and 🕹game developer. 👨Father and Husband.

Workspace

Published

API

Edited

Sep 4, 2021

1 fork

API

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## Code

---

bitecs = require('https://bundle.run/bitecs@0.3.12')

{

const world = bitecs.createWorld()

world.name = "MyWorld"

const eid = bitecs.addEntity(world);

const eid2 = bitecs.addEntity(world);

bitecs.removeEntity(world, eid2)

const Vector3 = { x: bitecs.Types.f32, y: bitecs.Types.f32, z: bitecs.Types.f32 }

const Position = bitecs.defineComponent(Vector3)

const Velocity = bitecs.defineComponent(Vector3)

const List = bitecs.defineComponent({ values: [bitecs.Types.f32, 3] }) // [type, length]

const Tag = bitecs.defineComponent()

bitecs.addComponent(world, Position, eid)

bitecs.addComponent(world, Velocity, eid)

bitecs.addComponent(world, List, eid)

bitecs.addComponent(world, Tag, eid)

Velocity.x[eid] = 1

Velocity.y[eid] = 1

List.values[eid].set([1,2,3])

const movementQuery = bitecs.defineQuery([Position, Velocity])

const ents = movementQuery(world)

const positionWithoutVelocityQuery = bitecs.defineQuery([ Position, bitecs.Not(Velocity) ])

const changedPositionQuery = bitecs.defineQuery([ bitecs.Changed(Position) ])

let entspos1 = changedPositionQuery(world)

console.log(entspos1) // => []

Position.x[eid]++

let entspos2 = changedPositionQuery(world)

console.log(entspos2) // => [0]

}

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