unity-ecs-dots

To migrate from MonoBehaviour to Unity ECS, you replace GameObjects with Entities, attach IComponentData structs for state, and use ISystem for logic. The Baking process converts your authoring GameObjects into runtime Entities within SubScenes.

MonoBehaviour uses an object-oriented approach with GameObjects, while ECS uses a data-oriented design separating data (IComponentData) from logic (ISystem). ECS enables high-performance, scalable game systems by processing data in memory-efficient layouts.

Use the Burst Compiler with the Jobs System by marking job structs with BurstCompile attributes. This enables parallel processing and optimized machine code generation for simulation logic like physics and AI.

Use Unity DOTS when building high-performance simulations with thousands of active entities. It is ideal for complex AI, physics, and rendering scenarios where parallel processing via the Jobs System and Burst Compiler provides maximum efficiency.

Yes, Unity 6.3 LTS supports baking and SubScenes. Baking converts authoring GameObjects into runtime Entities, while SubScenes allow you to stream large amounts of entity data efficiently in and out of the World.

IComponentData defines entity-specific data stored in efficient chunk layouts, while ISharedComponentData groups entities sharing identical values to filter and process them efficiently without duplicating memory overhead.