65 lines
1.7 KiB
Markdown
65 lines
1.7 KiB
Markdown
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<p align="center">
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<img src="jecs_darkmode.svg#gh-dark-mode-only" width=50%/>
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<img src="jecs_lightmode.svg#gh-light-mode-only" width=50%/>
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</p>
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[](LICENSE-APACHE)
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[](https://wally.run/package/ukendio/jecs)
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jecs is Just a stupidly fast Entity Component System
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- Entity Relationships as first class citizens
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- Iterate 800,000 entities at 60 frames per second
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- Type-safe [Luau](https://luau-lang.org/) API
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- Zero-dependency package
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- Optimized for column-major operations
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- Cache friendly archetype/SoA storage
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- Unit tested for stability
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### Example
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```lua
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local world = jecs.World.new()
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local pair = jecs.pair
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local ChildOf = world:component()
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local Name = world:component()
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local function parent(entity)
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return world:target(entity, ChildOf)
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end
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local function getName(entity)
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return world:get(entity, Name)
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end
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local alice = world:entity()
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world:set(alice, Name, "alice")
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local bob = world:entity()
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world:add(bob, pair(ChildOf, alice))
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world:set(bob, Name, "bob")
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local sara = world:entity()
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world:add(sara, pair(ChildOf, alice))
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world:set(sara, Name, "sara")
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print(getName(parent(sara)))
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for e in world:query(pair(ChildOf, alice)) do
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print(getName(e), "is the child of alice")
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end
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-- Output
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-- "alice"
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-- bob is the child of alice
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-- sara is the child of alice
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```
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21,000 entities 125 archetypes 4 random components queried.
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Can be found under /benches/visual/query.luau
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Inserting 8 components to an entity and updating them over 50 times.
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Can be found under /benches/visual/insertions.luau
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