| 1 | /**
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| 2 | * inspired by Entitas' Systems
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| 3 | * @see https://github.com/sschmid/Entitas-CSharp/wiki/Systems
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| 4 | */
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| 5 | export interface ISystem {
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| 6 | /**
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| 7 | * in a similar way to Unity's `Start()`, we can do some initialization works:
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| 8 | * * create global entities
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| 9 | * * init event listeners
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| 10 | */
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| 11 | initialize?(canvas: HTMLCanvasElement): void;
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| 12 | /**
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| 13 | * in a similar way to Unity's `Update()`, run once per frame
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| 14 | */
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| 15 | execute?(): Promise<void>;
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| 16 | /**
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| 17 | * run at the end of each frame
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| 18 | */
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| 19 | cleanup?(): void;
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| 20 | /**
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| 21 | * run once at the end of your program
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| 22 | */
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| 23 | tearDown?(): void;
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| 24 | }
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