3 ms·

Because not every engine slaps a fancy ECS tag front and center, the pattern evolved concurrently in industry (and we all had games to ship). If you look reall

Because not every engine slaps a fancy ECS tag front and center, the pattern evolved concurrently in industry (and we all had games to ship). If you look really carefully you'll find structured column databases have similar properties since when you optimize for speed cache misses are your number one enemy.

johnnycerberus 6y ago
Yes, I understand that ECS is probably good for more low-level stuff like particle-like systems. But what about gameplay-code? Unity ECS is mostly about that, to think in a data-oriented way about your gameplay programming. The thing that bothers me is why huge commerical engine like Unreal Engine or idTech don't even lift a finger about that? About structured column databases, the same thing could be said about Lisps like Clojure which match the RMDB data model. But people still find it hard to grok it, hence the low adoption rate.
- teamonkey 6y ago
  > why huge commerical engine like Unreal Engine or idTech don't even lift a finger about that? https://docs.unrealengine.com/en-US/ProgrammingAndScripting/ProgrammingWithCPP/UnrealArchitecture/Actors/Components/index.html https://docs.unrealengine.com/en-US/ProgrammingAndScripting/...
  - johnnycerberus 6y ago
    But according to the documentation, that is just a OOP-hierarchy in which they separate the concerns, they miss the S in the ECS.
    - vvanders 6y ago
      https://docs.unrealengine.com/en-US/ProgrammingAndScripting/ProgrammingWithCPP/UnrealArchitecture/Actors/Ticking/index.html https://docs.unrealengine.com/en-US/ProgrammingAndScripting/... The "S" in unreal is a tick. It's been about a decade since I last worked with Unreal but there was very much the concept of systems that processed batches of things in areas where performance was a concern. Keep in mind that ECS is a design pattern and just like any design pattern applied blindly you can end up in a worse place than you started. A FactoryDispatcherQueuePatternImpl helps no one despite using many design patterns. When it comes to ECS it's much more about the spirit than the letter of the law.
    - teamonkey 6y ago
      Not so. The physics system works on all physics components. The renderer system works on all rendering components. The networking system work on all components that are enabled for network replication.

johnnycerberus 6y ago

Yes, I understand that ECS is probably good for more low-level stuff like particle-like systems. But what about gameplay-code? Unity ECS is mostly about that, to think in a data-oriented way about your gameplay programming. The thing that bothers me is why huge commerical engine like Unreal Engine or idTech don't even lift a finger about that? About structured column databases, the same thing could be said about Lisps like Clojure which match the RMDB data model. But people still find it hard to grok it, hence the low adoption rate.

teamonkey 6y ago
> why huge commerical engine like Unreal Engine or idTech don't even lift a finger about that? https://docs.unrealengine.com/en-US/ProgrammingAndScripting/ProgrammingWithCPP/UnrealArchitecture/Actors/Components/index.html https://docs.unrealengine.com/en-US/ProgrammingAndScripting/...
- johnnycerberus 6y ago
  But according to the documentation, that is just a OOP-hierarchy in which they separate the concerns, they miss the S in the ECS.
  - vvanders 6y ago
    https://docs.unrealengine.com/en-US/ProgrammingAndScripting/ProgrammingWithCPP/UnrealArchitecture/Actors/Ticking/index.html https://docs.unrealengine.com/en-US/ProgrammingAndScripting/... The "S" in unreal is a tick. It's been about a decade since I last worked with Unreal but there was very much the concept of systems that processed batches of things in areas where performance was a concern. Keep in mind that ECS is a design pattern and just like any design pattern applied blindly you can end up in a worse place than you started. A FactoryDispatcherQueuePatternImpl helps no one despite using many design patterns. When it comes to ECS it's much more about the spirit than the letter of the law.
  - teamonkey 6y ago
    Not so. The physics system works on all physics components. The renderer system works on all rendering components. The networking system work on all components that are enabled for network replication.