https://github.com/codewriter-packages/morpeh.systemstateprocessor

Reactivity for Morpeh ECS
https://github.com/codewriter-packages/morpeh.systemstateprocessor

ecs entity-component-system unity unity3d

Last synced: about 1 year ago
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Reactivity for Morpeh ECS

• Host: GitHub
• URL: https://github.com/codewriter-packages/morpeh.systemstateprocessor
• Owner: codewriter-packages
• License: mit
• Created: 2022-12-27T11:14:46.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2023-10-21T09:17:17.000Z (over 2 years ago)
• Last Synced: 2025-04-01T15:41:25.699Z (about 1 year ago)
• Topics: ecs, entity-component-system, unity, unity3d
• Language: C#
• Homepage:
• Size: 18.6 KB
• Stars: 10
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

          
# Morpeh.SystemStateProcessor [![Github license](https://img.shields.io/github/license/codewriter-packages/Morpeh.SystemStateProcessor.svg?style=flat-square)](#) [![Unity 2021.3](https://img.shields.io/badge/Unity-2021.3+-2296F3.svg?style=flat-square)](#) ![GitHub package.json version](https://img.shields.io/github/package-json/v/codewriter-packages/Morpeh.SystemStateProcessor?style=flat-square)

_Reactivity for Morpeh ECS_

## How to use?

```csharp

using System;

using Scellecs.Morpeh;

using Scellecs.Morpeh.Systems;

using UnityEngine;

[Serializable] public struct HeroComponent : IComponent { }

[Serializable] public struct HeroDamagedMarker : IComponent { }

[Serializable] public struct HeroDeadMarker : IComponent { }

public class HealthBarSystem : UpdateSystem {

    [SerializeField] private GameObject healthBarPrefab;

    private SystemStateProcessor heroProcessor;

    public override void OnAwake() {

        heroProcessor = World.Filter

            .With()

            .With()

            .Without()

            .ToSystemStateProcessor(CreateHealthBarForHero, RemoveHealthBarForHero);

    }

    public override void Dispose() {

        heroProcessor.Dispose();

    }

    public override void OnUpdate(float deltaTime) {

        heroProcessor.Process();

    }

    // Called when an entity has been added to the Filter

    private HealthBarSystemStateComponent CreateHealthBarForHero(Entity heroEntity) {

        var healthBar = Instantiate(healthBarPrefab);

        return new HealthBarSystemStateComponent {

            healthBar = healthBar,

        };

    }

    // Called when an entity has been removed from filter or has been destroyed

    private void RemoveHealthBarForHero(ref HealthBarSystemStateComponent state) {

        Destroy(state.healthBar);

    }

    [Serializable]

    private struct HealthBarSystemStateComponent : ISystemStateComponent {

        public GameObject healthBar;

    }

}

```

## License

Morpeh.SystemStateProcessor is [MIT licensed](./LICENSE.md).