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# Lyra ECS
An ECS for the Lyra game engine.
## Why does it exist?
I couldn't find anything that fulfilled my needs, specifically an ECS that can store arbitrary components without knowing about the types. This makes it easier to implement into a scripting engine that has the ability to create its own components.
## Features
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- [x] Archetypes
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- [x] Spawning entities
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- [x] Despawning entities
- [x] Delete entities from archetypes
- [x] Find some way to fill in the gaps in component columns after entities are deleted
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* This was done by moving the last entity in the column to the gap that was just removed.
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- [x] Grow archetype as it fills up
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- [x] Borrow safety of components inside Archetypes
- [x] Return `Ref` and `RefMut` from borrow queries
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- [x] Querying components from archetypes
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- [x] Views
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- [x] Mutable views
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- [x] Resources
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- [x] Get resources in views somehow
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- [ ] Relationships (maybe this can be done through queries, idk)
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- [x] Dynamic queries
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* Needed for scripting engines that can create their own components that Rust does not know the types of.
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- [x] Systems
- [x] Dispatchers/Executors
- [x] Execution graph that follows dependencies
- [ ] Track when components on entities are changed
