Skip to content

Commit

Permalink
Update a Bevy 101 - ECS 부터 itch.io 배포까지
Browse files Browse the repository at this point in the history
  • Loading branch information
@hueypark
hueypark committed Aug 25, 2024
1 parent 6ad5394 commit 8b1bd8d
Showing 1 changed file with 118 additions and 79 deletions.
197 changes: 118 additions & 79 deletions content/marsettler/bevy-101-from-ecs-to-itch-io-deployment.md
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,19 +3,24 @@ title: "Bevy 101 - ECS 부터 itch.io 배포까지"
date: "2024-08-18"
tags: ["marsettler", "rust", "bevy", "game", "itchio", "github"]
layout: "slide"
draft: true
---

# Bevy 101 - ECS 부터 itch.io 배포까지

---

## 박재완

- 여러 게임회사를 다닌 후
- 지금은 [OLAP 데이터베이스](http://abit.ly/luft) 개발하고 있음
- Bevy 로 캐주얼 게임 만들기 시도 중

---

## 목차

- Bevy
- Bevy ECS
- itch.io
- itch.io 배포
- Bevy Game Engine 기초
- itch.io 에 게임 배포하기

---

Expand All @@ -28,6 +33,8 @@ https://bevyengine.org/

---

## Bevy 주요 기능

- Data Driven
- 2D, 3D Renderer, Render Graph, Animation
- Cross Platform
Expand Down Expand Up @@ -66,7 +73,15 @@ Bevy Component 와 System

---

## Bevy Hello World
## Bevy Warning

> Bevy is still in the early stages of development.
https://github.com/bevyengine/bevy?tab=readme-ov-file#warning

---

<!-- ## Bevy Hello World
```rust
use bevy::prelude::*;
Expand All @@ -82,7 +97,7 @@ fn hello_world() {
}
```
---
--- -->

## Bevy ECS

Expand All @@ -94,53 +109,66 @@ fn hello_world() {

## [Entity component system in wikipedia](https://en.wikipedia.org/wiki/Entity_component_system)

> Entity–component–system (ECS) is a software architectural pattern mostly used in video game development for the representation of game world objects.
>
> An ECS comprises entities composed from components of data, with systems which operate on the components.
- Entity–component–system (ECS) is a software architectural pattern mostly used in video game development for the representation of game world objects.
- An ECS comprises entities composed from components of data, with systems which operate on the components.

---

## [Go 1.18 Generic으로 만들어본 ECS 시스템](https://www.youtube.com/watch?v=FylHURMCpPU&t=410s)
## [History of ECS](https://en.wikipedia.org/wiki/Entity_component_system#History)

MVC 패턴과 비슷한 것 같기도 하지만
- In 1998, Thief: The Dark Project pioneered an ECS.
- ...
- In October 2018 the company Unity released its megacity demo that utilized a tech stack built on an ECS.

디커플링이 목적이 아니라
---

## [Go Generic 으로 만들어본 ECS 시스템](https://www.youtube.com/watch?v=FylHURMCpPU&t=410s)

**성능 향상이 목적**
- MVC 패턴과 비슷한 것 같기도 하지만
- 디커플링이 목적이 아니라
- **성능 향상이 목적**

---

## [Bevy ECS](https://github.com/bevyengine/bevy/tree/main/crates/bevy_ecs)
## Unity

### What is Bevy ECS?
- [ECS for Unity](https://unity.com/ecs)
- Game code based on an ECS architecture pattern can avoid the drawbacks of object-oriented programming with GameObjects.
- And by leveraging game code based on ECS, Burst Compiler, and the C# Job System, development teams can maximize the performance of target platform hardware resources at the memory and CPU level.
- [Unity ECS로 속도 향상, 캐릭터 5000개 만들어 보기](https://youtu.be/LVjb_fQs2J8)

---

> Bevy ECS is an Entity Component System custom-built for the Bevy game engine.
>
> It aims to be simple to use, ergonomic, fast, massively parallel, opinionated, and featureful.
>
> It was created specifically for Bevy's needs, but it can easily be used as a standalone crate in other projects
## Unreal Engine

- [Engine Level ECS System Needed](https://forums.unrealengine.com/t/engine-level-ecs-system-needed/499939/2)
- TL;DR Unreal does take benefit of CPU threads.
- It does already uses ECS where it makes sense, instead of forcing everyone to some trend.

---

### ECS
## [Bevy ECS](https://github.com/bevyengine/bevy/tree/main/crates/bevy_ecs)

> All app logic in Bevy uses the Entity Component System paradigm, which is often shortened to ECS.
>
> ECS is a software pattern that involves breaking your program up into Entities, Components, and Systems.
>
> Entities are unique "things" that are assigned groups of Components, which are then processed using Systems.
- Bevy ECS is an Entity Component System custom-built for the Bevy game engine.
- It aims to be simple to use, ergonomic, fast, massively parallel, opinionated, and featureful.
- It was created specifically for Bevy's needs, but it can easily be used as a standalone crate in other projects

---

### Concepts
## [Bevy ECS Concepts](https://github.com/bevyengine/bevy/tree/main/crates/bevy_ecs#concepts)

- Bevy ECS Concepts 중 핵심적인 몇가지 소개
- Components
- Entities
- Systems
- 이 외에도 Worlds, Schedules 등의 개념이 있음

---

#### Components
### [Components](https://github.com/bevyengine/bevy/tree/main/crates/bevy_ecs#components)

> Components are normal Rust structs.
>
> They are data stored in a World and specific instances of Components correlate to Entities.
- Components are normal Rust structs.
- They are data stored in a World and specific instances of Components correlate to Entities.

```rust
use bevy_ecs::prelude::*;
Expand All @@ -151,9 +179,9 @@ struct Position { x: f32, y: f32 }

---

#### Entities
### [Entities](https://github.com/bevyengine/bevy/tree/main/crates/bevy_ecs#entities)

> Entities are unique identifiers that correlate to zero or more Components.
- Entities are unique identifiers that correlate to zero or more Components.

```rust
use bevy_ecs::prelude::*;
Expand All @@ -166,24 +194,22 @@ struct Velocity { x: f32, y: f32 }

let mut world = World::new();

let entity_id = world
let entity = world
.spawn((Position { x: 0.0, y: 0.0 }, Velocity { x: 1.0, y: 0.0 }))
.id();

let entity_ref = world.entity(entity_id);
let entity_ref = world.entity(entity);
let position = entity_ref.get::<Position>().unwrap();
let velocity = entity_ref.get::<Velocity>().unwrap();
```

---

#### Systems
### [Systems](https://github.com/bevyengine/bevy/tree/main/crates/bevy_ecs#systems)

> Systems are normal Rust functions.
>
> Thanks to the Rust type system, Bevy ECS can use function parameter types to determine what data needs to be sent to the system.
>
> It also uses this "data access" information to determine what Systems can run in parallel with each other.
- Systems are normal Rust functions.
- Thanks to the Rust type system, Bevy ECS can use function parameter types to determine what data needs to be sent to the system.
- It also uses this "data access" information to determine what Systems can run in parallel with each other.

```rust
use bevy_ecs::prelude::*;
Expand All @@ -198,12 +224,11 @@ fn print_position(query: Query<(Entity, &Position)>) {
}
```


---

## [Build Your First Game in Bevy and Rust - Step by Step Tutorial](https://youtu.be/E9SzRc9HkOg)
## OOP vs ECS

OOP vs ECS
- [Build Your First Game in Bevy and Rust - Step by Step Tutorial](https://youtu.be/E9SzRc9HkOg)

---

Expand Down Expand Up @@ -244,41 +269,22 @@ fn velocity_system(

---

## 다른 엔진의 ECS 활용

---

### Unity

- [ECS for Unity](https://unity.com/ecs)
- [[ECS/DOTS #2] Unity ECS로 속도 향상, 캐릭터 5000개 만들어 보기](https://youtu.be/LVjb_fQs2J8)

---

### Unreal Engine

- [Engine Level ECS System Needed](https://forums.unrealengine.com/t/engine-level-ecs-system-needed/499939/2)

> TL;DR Unreal does take benefit of CPU threads.
>
> It does already uses ECS where it makes sense, instead of forcing everyone to some trend.
---

## 자 이제 Bevy 로 게임을 만들었습니다.
## 자! 이제 Bevy 로 게임을 만들었습니다.

## 그 다음은? 배포!

---

## 주요 고려사항

1. 사용자에게 가깝다.
2. 쉽게 사용할 수 있다.
3. 개발자의 노력이 적다.
1. 사용자가 접근하기 쉬워야 함
2. 개발자가 쉽게 사용할 수 있어야 함
3. 배포 주기가 짧아야 함

---

## 플랫폼들

- Google Play
- App Store
- Steam
Expand All @@ -289,30 +295,63 @@ fn velocity_system(

## itch.io

> itch.io is an open marketplace for independent digital creators with a focus on independent video games.
- itch.io is an open marketplace for independent digital creators with a focus on independent video games.

https://itch.io/docs/general/about
https://itch.io/

---

## 왜 itch.io 인가?

1. 사용자가 접근하기 쉬워야 함
- 다운로드 없이 웹에서 바로 실행됨
2. 개발자가 쉽게 사용할 수 있어야 함
- 하루 정도 걸려서 배포 성공
3. 배포 주기가 짧아야 함
- GitHub 에서 자동화된 배포 가능
---

## Snake v2

https://hueypark.itch.io/snake-v2

---

## itch.io 배포 with bevy
## GitHub Actions

- Automate your workflow from idea to production

https://github.com/hueypark/marsettler/blob/b0a93930b057b9c9141b36dd8d9c891c275da456/.github/workflows/release.yaml
https://github.com/features/actions

## GitHub Actions workflow
---

## Butler

butler is a small command-line tool that lets you:

- Upload builds of your games quickly & reliably to itch.io
- Generate patches and apply them offline
- Run a few other utility commands

https://github.com/itchio/butler

---

## Bevy 로 itch.io 배포하기

1. Checkout code
2. Install Rust toolchain
3. Install wasm related tools
4. Install butler
5. Upload package to Itch.io

```
- name: Checkout code
uses: actions/checkout@v4
```
[전체 Workflow](https://github.com/hueypark/marsettler/blob/b0a93930b057b9c9141b36dd8d9c891c275da456/.github/workflows/release.yaml)

---

## Q & A

---

## 참고자료

Expand Down

0 comments on commit 8b1bd8d

Please sign in to comment.