make2d

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make2d is a lightweight game framework for building 2D WebGL games in JavaScript.

It provides a Unity-inspired architecture on top of PIXI.js, focusing on:

• predictable object hierarchy
• safe lifecycle management
• efficient collision detection
• reactive, composable update loops

highlights

• fast, mobile-friendly rendering (PIXI.js)
• Unity-like scene & entity hierarchy
• lifecycle-safe object destruction
• efficient 2D collision system (check2d)
• RxJS-driven update & event model

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demo

👉 https://nenjack.github.io/make2d/demo/?fps&debug

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demo code

import { Scene, GameObject } from 'make2d'
import { takeUntil } from 'rxjs'

const scene = new Scene({
  visible: true,
  autoSort: true
})

// scene-level update loop
scene.update$.pipe(takeUntil(scene.destroy$)).subscribe(() => {
  scene.physics.separate()
})

const gameObject = new GameObject('Entity Name')
scene.addChild(gameObject)

// game object update loop
gameObject.update$
  .pipe(takeUntil(gameObject.destroy$))
  .subscribe((deltaTime) => {
    gameObject.update(gameObject, deltaTime)
  })

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demo structure

[HTML5 Canvas + WebGL]
└── [Scene]
    └── [Collision System]
        └── [GameObject x 50]
            ├── [Body]
            └── [Animator]
                └── [StateMachine]

The hierarchy and API are intentionally similar to Unity, making it easy to reason about complex scenes.

why make2d?

When building multiple indie and HTML5 WebGL games, a few recurring problems show up:

1. managing deeply nested game entities
2. avoiding memory leaks during object destruction
3. keeping update logic predictable and composable

make2d addresses these by design, using a strict hierarchy and lifecycle model inspired by Unity.

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lifecycle & update model

Every object in make2d participates in a tree-based lifecycle.

Examples:

• tank → turret → ammo
• house → furniture → props

lifecycle guarantees

• All framework classes implement Lifecycle

• Destroying any object:

  • emits and completes destroy$
  • recursively destroys all children

• RxJS subscriptions can safely bind to destroy$

update propagation

• Every object exposes an update$ observable
• Updates flow top-down through the hierarchy
• When a parent updates, all children valign="middle"update automatically
• deltaTime is provided each frame

This makes it easy to compose behavior without manual bookkeeping.

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exports

make2d provides a small but complete set of building blocks:

core

• Lifecycle – destroy entire branches safely
• Component – base class for attachable behavior
• GameObject – Unity-like entity container
• Scene – root container and game entry point
• SceneSSR – Scene replacement for Node.js

rendering & containers

• Container – PIXI.Container + lifecycle
• Sprite – PIXI.Sprite + lifecycle
• Animator – manages multiple PIXI.AnimatedSprite
• TextureAtlas – atlas frame slicing

state & structure

• StateMachine – simple state handling
• Prefab – declarative entity creation
• Resources – asset loader

physics

• CircleBody – circular collider
• BoxBody – rectangular collider
• PolygonBody – polygon collider

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installation

yarn add make2d

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documentation

• API reference https://nenjack.github.io/make2d/modules.html
• Lifecycle & hierarchy https://nenjack.github.io/make2d/hierarchy.html

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license

MIT