Simple Setup for ECS 2D

This repo demonstrates an approach to Unity ECS in 2D that answers these questions:

• How to author and bake entity prefab for 2D character?
• How to store and use information of spritesheets globally?
• How to implement spritesheet animation logic in ECS?
• How to synchronize sprite renderers with entities?
• How to react to UI events in ECS?
• How to implement object-pool for sprite presenters?
• How to utilize TransformAccessArray to update the transform of sprite presenters in parallel?
• How to use Companion GameObject from Entities Hybrid?

Changelog

Version 4.0.2

• Remove [BurstCompile] across ISystem methods and document the reason.

Version 4.0.1

• Correct subscene
• Remove the code to add Prefab tag to prefab entities at runtime

Version 4.0.0

• Upgrade to Unity 6000.0.27
• Fix a compilation error caused by missing TMPro
• Add Entities Graphics and URP
• Add "Version 2" that use Companion GameObject from Entities Hybrid instead of GameObjectPool
• Make some changes to subscene and authoring to accomodate the Companion GameObject approach

Version 3.0.0

Add more functionality

• Spawn multiple characters
• Randomly set the animation for each character
• Automatically move characters
• Can change global move speed for all characters in real-time
• Destroy entities

Version 3.1.0

• Refactor some code
• Teleport characters to the opposite side of the screen if the went out of bounds

Credits

• GandalfHardcore - Pixel Art Character Pack: https://gandalfhardcore.itch.io/free-pixel-art