Performance Improvements

This update includes several changes and optimization for performance.

Component storage has been completely rebuilt.

Lookup and retrieval APIs are now substantially faster.

let myComponent = entity[MyComponent.self]
//
let myComponent = entity.component(ofType: MyComponent.self)
//
let hasMyComponent = entity.hasComponent(ofType: MyComponent.self)

Standardized DeltaTime

deltaTime is now a multiple of 0.004166666667 which will reduce floating point rounding errors. This change is a step toward making the simulation deterministic. Because of this change highPrecisionDeltaTime has been removed.

PerformanceRenderingSystem

The PerformanceRenderingSystem is a RenderingSystem you can add to your game to visualize performance. The values displayed have been completely overhauled.

• "Frame Time": The duration in milliseconds from simulation start to renderer, but not round trip.
• "Total Systems Time": The total System, PlatformSystem, and RenderingSystem duration in milliseconds.
• "Rendering Systems": The weight in percent of RenderingSystems.
• "Systems": The weight in percent of System and PlatformSystem.