Scion is a tiny 2D game library built on top of wgpu, winit and legion.

Last update: Dec 25, 2022

Overview

Scion is a 2D game library made in rust.

Please note that this project is in its first milestones and is subject to change according to convience needs and big features coming. You can use Scion as you want although I just made this open source to serve the community not to be a competitor to the current Rust game engine eco-system.

Why this project ?

Well, firstly because it' a good way to learn.

Then because a lot of projects these days focus on adding a lot of feature pretexting feature parity with big editors or game engines. Here I focus on the features that I really need for my projects. I won't add things just because they are cool, but because I need them in a game project

Scion relies on a short list of principles that also serves as a guideline.

Goals

Strong focus on 2D only.
Easy and Fun to use.
Clean and readable source code.
Tiled integration

Non goals

Ultra/over optimized code and performances. For this, please try other engines or build your own !
3D
Editor

Why ECS ?

Today, ECS is like a 'magic' word for games, game libs and game engine. But ECS is not and must not be considered as a universal answer to multiple questions. I believe that ECS has its strength and its weaknesses. The choice of it here is made because the main target games of this lib at its start were to be able to make :

a complex city building game.
a pkmn fan game with real time trainer progression and wild pkmn.
granular network packets representation && dot simulation games.

Notable dependencies

These are the dependencies this project is relying on. Thanks to these awesome communities, we are able to build this kind of tiny projects.

winit and wgpu (windowing and multi backend rendering)
legion (Entity component system)
ultraviolet (Maths)

Comments

fix(tetris): move 2 lines down

I don't understand why do you remove index to line : if a block is on a line upper than removed line, it should move down. This is independent of removed line index in 'lines2' array.

I have tested with 2 and 3 lines removed and it work.

If you are ok with that, I can also refactor this code to rename variables like lines2.

opened by alocquet 4
Animation convenience constructors

I would like to add :

Animation::running(...) -> Create an animation with 'RUNNING' status Animation::looping(...) -> Create an animation with 'LOOPING' status

And delete the 'loop at start' boolean in the new fn
enhancement good first issue

opened by grzi 4
Implement the Center pivot point for rectangle

Description

Currently, we can set the pivot point only for Square shapes. We need this feature also on Rectangle

How to do this ?

The file to modify is : https://github.com/grzi/scion/blob/main/src/core/components/shapes/rectangle.rs

The square with working center pivot point is here : https://github.com/grzi/scion/blob/main/src/core/components/shapes/square.rs
enhancement good first issue hacktoberfest

opened by grzi 3
Plans for 0.3.0

The goal here is to plan the next milestone (0.3.0) with a theme and a list of needed features. Starting from now, the milestone planning will also contain convenience issue detected when coding the mini game for the POC of the previous milesone.

https://github.com/grzi/scion/milestone/3
documentation

opened by grzi 3
Bounded concurrent messaging queue
Create an internal Messaging Systems that allow :

Concurrency (multi consumers, multi producers): This is needed because we don't want to duplicate the events.

Topics: One topic is dedicated to one event type.

Bounds : Optionally set a limit per topic. Convenience to be able to have a limited in memory size for the topics.

Pull based consumers: Consumers call the topic to get the new events using an offset. Each consumer has a pull size limit to know the maximum event it can pull in one call

Pausable: When pausing the game, switching layers, some topics may want to stop receiving && accept pull request from consumers

That's all, then we use it to track event in the game engine and allow users to create topics, producers, consumers with either convenience functions or macros.
enhancement Advanced
opened by grzi 3
create new color using hex code

Issue #219

Added utility function new_hex(str) to create color using hex code. Additionally new code is tested in jezzball project by creating rectangle colors using hex codes

opened by Yash-Punia 2
Color New from Hexa

Describe the feature

An utility FN to create a color from Hexa code

Why do you need this feature ?

To be able to use Hexa codes from figma or any tools actually. It's easier IMO
enhancement

opened by grzi 2
Implement the Center pivot point for lines

Description

Currently, we can set the pivot point only for Square shapes. We need this feature also on Lines We need to compute the center of the line using a formula to do this.

How to do this ?

The file to modify is : https://github.com/grzi/scion/blob/main/src/core/components/shapes/line.rs

The square with working center pivot point is here : https://github.com/grzi/scion/blob/main/src/core/components/shapes/square.rs
enhancement good first issue hacktoberfest

opened by grzi 2
Implement the Center pivot point for triangle

Description

Currently, we can set the pivot point only for Square shapes. We need this feature also on Triangle We need to compute the center of the triangle using a formula to do this.

How to do this ?

The file to modify is : https://github.com/grzi/scion/blob/main/src/core/components/shapes/triangle.rs

The square with working center pivot point is here : https://github.com/grzi/scion/blob/main/src/core/components/shapes/square.rs
enhancement good first issue hacktoberfest

opened by grzi 2
changed Transform2D to Transform in 10 files

examples/tetris/layer.rs examples/tetris/system/piece_system.rs examples/tetris/system/score_system.rs examples/tetris/system/move_system.rs examples/tetris/system/rotate_system.rs examples/taquin/main.rs src/core/systems/ui_text_system.rs src/core/components/maths/transform.rs src/rendering/bidimensional/gl_representations.rs src/rendering/bidimensional/scion2d.rs

opened by juanapatankar 2
fix: block I disappear during rotatation on right side

The I block disappear when I move it to thé left and rotate it. The problème was that x coordinate was an unsigned int and it become max usize value instead of -1.

opened by alocquet 1
Gravity ?
Describe the feature

Be able to apply gravity to an object. This still needs to be thought in depth but here is how I see it rn :

Implement basic gravity rules with different parameters that will

Why do you need this feature ?

A clear and concise description of the reason you suggest this feature

Additional context

Add any other context or screenshots about the feature request here
enhancement draft
opened by grzi 0
Handle input pressure in the input controller

Describe the feature

When retrieving if an input is pressed, it would be interesting to be able to also retrieve a gauge that represents how long it has been pressed.

Why do you need this feature ?

It's usefull to handle acceleration and conditional actions depending on the pressure type
enhancement

opened by grzi 2
Button component
UI Button

Issue created in order to keep track of this new component

Features

Button builder

Button events

on mouse enter

on mouse exit

on click

clicked

on release

enhancement
opened by grzi 0
Collider shape

Describe the feature

To be able to create quasi pixel perfect collisions, polygone colliders are needed.

Maybe I should hide complexe polygons behind a feature ...
enhancement

opened by grzi 0

Releases(0.6.0)

0.6.0(Feb 19, 2022)

https://user-images.githubusercontent.com/43185161/154801168-19c7430d-b153-4c67-8d44-2a96b9a1ca7c.mp4

chore: prepare 0.6 (#228) (d750d4d) feat(minigame): Implement New bark town (ghost) to validate 0.6 (#227) (d267f12) feat(transform): Allow a transform to use screen as origin (#225) (c85ef1e) feat(tilemap): Add events on tilemap and rework atlas (#224) (1561b60) feat(tileset): Add tileset atlas and retriever (#223) (21cdc82) fix(transform): dirty child system was missing (ea357b9) feat(audio): Rework audio and switch to rodio (#221) (cccf4e0) fix(rendering): Filterable texture and winit to 0.26 (fd89fb0) feat: Single scene instead of pile of layers (#220) (1c64d54) feat: systems package (#218) (e61464c) feat: Implement the Center pivot point for triangle (#216) (5783661) feat: Text animation (#217) (2607bad) chore: wgpu 0.11 upgrade + dpi bug and issue patterns (#215) (272e1eb) feat: Implement the Center pivot point for lines (#214) (1e1165d) feat: Add collider offsets (#213) (2f64976) feat: Input controller V2 (#212) (2e5613c) fix: block I disappear during rotatation on right side (#209) (f7007e8) fix(tetris): move 2 lines down (#205) (ebdaad6) doc: fedora build packages (#206) (56cb078) feat: Add on conflict play config and some chores (#204) (77a7e60) Implement the Center pivot point for rectangle (#198) (c5aec99) Add function and events for stopping all sounds (#203) (2450ff7) chore: Upgrade deps and make compile on macOS (b411649)
Source code(tar.gz)
Source code(zip)
0.5.0(Sep 2, 2021)

chore: Changed link and debug config's app name (86a55d78e9f2d678225b7b95c227f1b4f9ecba3c) feat: Add asset hot reload (e317eda3f0f1ad107e8855a2f68b6bed409d9049) feat: Asset hot reload as a feature (b02559fe6309b3fc36f3d688e44f65571474244c) feat: Add Transform builder and more convenience to transform (4e9e53e340f9eb95f02295c95d036e9598700dee) feat: color animations (5b9eecbe2bf7be8a587ed8e4aff1a73ed9f47176) feat: Vector and cleanup (bbe84499c34ba7a9a1bb917aaa01151330e711f6) feat: Add legion resource extension to simplify code (a86855a669331a48d98e5188e608c74df74c9d51) feat: Default camera and mouse convenience (c510f398791c8213ff8a9e59c51b57be0a863d41) feat: Add hide & hide propagated components (8f8925974ef6d6461160d295b54047af735af424) feat: blink and layer to z (ee61b507d291f43c280065306acf2990e0f325cf) feat: improved animation constructors (0a0c081f41b42a79f035bdde097df676dd307b4a) feat: Add basic audio loader and audio player (Linux only) (be51cd3fe86bcf3302e830b9e26e58aec6bd8693) feat: Add pivot on square and some docs (15fbf9df0039f3ad6c676e9cc93c11b046f8be0e) feat: wgpu 0.10 && line component (880376a63de868c8b9ec62ae5617260e2a3fe232) feat: Add polygon component (581fb77e9a9098c0620a063c585f1b4c6b5ea83e) feat: Debug lines for colliders (6198cfbca8df7b3f8cc5b9867ed1a37b8ba8ca8e) feat: start a little world debugger (c924448fc2910a07092923f0a33775d45c8740b2) feat: Allow to change cursor icon (2b0e6890b484ebeceaae6022617504f6699a4a4c) fix: WGPU Pipeline by type instead of per components (1246f6d009d6d6d5ee9f5f0f9f88c172446267c5) feat: Implement Jezzball clone to validate 0.5 Milestone (688c2f3b67829fb0936caabde7c519298be9bdeb)
Source code(tar.gz)
Source code(zip)
0.4.0(Aug 1, 2021)

style: Remove bad expect and modify readme (aeb0f138b94d22ffe567a83a8528ee40937be3ba) tech: Upgrade winit, wgpu, bytemuck and serde (07f744108eddb5cc680dca0db6769f75b42befad) chore: Move assets to examples (37de703b2877c69ac19bd86910e4437b2f25ee33) chore: use new features in examples (27cd885d0f493d73df2fbeb762aa358ab0aaa3ef) fix: UiText translation bug with parent (7271a1cb75f0bb3815d264da5363b65efb3d7cbc) fix: forgotten clean of Children component (f3ccdba45462cf039ff1f12449dbc4feaac62a65) feat: Move Camera to world and add bounds to Transform (61c54490661fef6185adbd69e029ef77780aca7e) feat: tileset material loadable in asset manager (fffecb8e138f23c2d28144c7947a6ff84b6abfa1) feat: configurable color to the clear color (5402b47d5edd912dbe5bac43d906a9125838cb86) feat: Optimize buffer creation and add a buffer cleaner (04ffc64b33b2a92a1bf68720b19a7bcb197e7fc3) feat: Global animations component and Transform animation (79345eb8b3f2b8dff9a06b19e9c346afbbe5a5cb) feat: Sprite Animation (loopable) (986f7650a9c1833946b6cdf4753ffa37dea7efba) feat: More Keycodes and convenience keyboard functions (8727298f35219132295cb234d30ad3d9af78d04a) feat: Multi layered tilemap (6742683df10b85b53c01eeb34f236a0901aeaa82) feat(animation): Animation can now loop at start (0d096cbb9dfec0d009f807d5f278c10a61aa3ff6) feat: Add 'any_animation_running' for animations (1ae1aa9b724b0fa95541e8ce3e4a8c0cabed55ef) feat: Bomberman like mini game (8533f2b7b537d0c4e9e99bc9e59fa7cc62906917)
Source code(tar.gz)
Source code(zip)
0.3.0(Jun 2, 2021)

Source code(tar.gz)
Source code(zip)
0.2.0(Apr 6, 2021)

chore: Bump version to 0.2.0 by grzi (9418e6b) feat: Implement tetris by grzi (a006889) feat: Add basic keyboard inputs by grzi (9e41e0c) feat: ui text and bitmap font (#65) by grzi (e59ae42) feat: basic Parent/Children feature by grzi (9ba3d0f) chore: reorganize modules and fmt (#64) by grzi (9e0f6d4) feat: Timers utils by grzi (ca5a4aa) feat: UiImage and layer rendering (#60) by grzi (55d46b8) feat: Tetris Assets and CONTRIBUTING.md by grzi (eaa1545) feat: Texture blending (transparency) by grzi (9f6380c) feat: Add a way to push/pop layers by grzi (c3c5cb3) feat: switch to json instead of toml & Add an entry point by grzi (64bc15f) feat: Pausable legion systems base on GameState by grzi (feba786)
Source code(tar.gz)
Source code(zip)
0.1.0(Mar 20, 2021)
The taquin release

This was the first release, made as a POC, where the mini game was a simple Taquin

fix: Remove windows and macos from ci until open source (e4dcb4c)

fix: removed nightly and set dep to what miniquad needs (7047489)

feat: Camera and coordinates view in shader (#46) (095eaf1)

feat: Re-add missing WindowDimensions resources (de5d567)

feat: mouse position in 'inputs' resource (#39) (aaebd67)

feat: square component and indexes buffers (12bcdca)

feat: renderable2D genericity (e9c762c)

feat: Switch to winit and wgpu (#35) (4ad3a49)

feat: Add texture material (#30) (b687ecd)

feat: Add a file reader and app_path utils (9b8ea3b)

feat: Add vertices to the triangle struct (e8e3275)

feat: Add transform (#24) (e4a5e6b)

feat: add color and basic material (f9d4e09)

feat: add layers (#21) (7289e35)

feat: addition to the rendering trait and banner (0d2cf27)

feat: Renderer Trait, enum and builder fn (c295e02)

feat: add WindowDimensions resource and updates (bfb9e42)

feat: add WindowDimensions resource and updates (1455949)

feat: Switch to miniquad, minimalistic windwing/rendering (e3d1c4b)

feat: colored fern configurable logger impl (1d9df78)

feat: time and frame limiter strategy (4e6adeb)

feat: Window config & replace the loop with winit loop (105de9a)

feat: Add a config file reader for the Scion.toml file (c76126c)

feat: Add a first Scion App builder with a simple loop (5376115)

feat: generate project and add default ci (1ce5dce)

fix: Remove windows and macos from ci until open source (e4dcb4c)

fix: removed nightly and set dep to what miniquad needs (7047489)

fix: Remove windows and macos from ci until open source (e4dcb4c)

Source code(tar.gz)
Source code(zip)

Owner

Jérémy Thulliez

Currently working as a backend consultant at @Zenika. Passionate developper. And yes, I love zombies.

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