DEVLOG 21 - ECS Refactoring

 
Intro
Over the past ten hours, I’ve worked extensively on the ECS, making it more robust, easier to use, more secure, and more efficient. What’s changed:
 

• New Way To Record Entity Commands
  Entity Command Pools are still used, but they’re managed not by the user but by the Entity Manager. The old CreateCommandPool() method no longer exists. Now, to execute a command on entities, you make a request to the EntityManager, which takes the command and places it in an EntityCommandPool of its choosing. The EntityCommandPool is chosen based on the SystemId provided by the engine with methods like Start, Awake, Update, etc. This reduces complexity and allows for systems that can run natively in parallel on multiple threads.
   
• Improved Efficiency
  Internally, the Entity Manager has improved the way to compact batches after command execution, making it simpler and faster. Instead, iterating over all batches only iterates on the entities that are no longer valid, and those slots are refilled with the components of the valid entities at the end of the last batches. Batch creation and destruction is handled automatically by the EntityManager.
   
• New Way To Query Tables
  The way to find tables with certain requirements has improved; the old method required registering a query and then returning a “ticket” used to access the query results. The operation is now simpler and more unified: The EntityManager is asked for all tables that meet the QueryInfo structure requirements, such as the archtype. The EntityManager checks whether the query already exists; if it doesn’t, it calculates it on the fly and returns it.
   
• Queries Updated Only When Needed
  Queries are updated only when tables are created/destroyed; otherwise, they remain - static and aren’t updated, saving calculations.
   
  The next step will be to verify if everything works, since I haven’t tested anything yet because I’m forced to do this devlog due to the ten-hour time limit. :/
   
   
  Sorry about the picture, it’s the same, I didn’t have time to do anything else