opyapeus / purescript-emo8

🍠 A functional 2D game engine that can create emoji games.

Emo8

An unique functional 2D game engine that can create games with only emoji.

[ 日本語 ]

This Library Is For Someone Who...

• Thinks only emoji is interesting!
• Wants to share the game easily
• Wants to write a clear program using PureScript

Why Emoji?

• Familiar materials that can be used anywhere
• Create games like assembling LEGO blocks
• Interesting that there are restrictions like PICO-8

Why PureScript?

	Language abstraction	Distributability
PureScript	○	○
Haskell	○	△ ※1
Elm	△ ※2	○

• ※1: Hard to convert into JavaScript
• ※2: No type classes

Feature

Screen Size	Variable 256px~1024px（reasonable）
Background Color	140 colors（HTML named colors）
Material	Unicode Emoji v13.0 （Single code point only）
Controller	8 buttons（up down left bottom ×2）
Map	Map made of Emoji
Sound	Sound made of Emoji
Language	PureScript
Output File Volume	~1MB（reasonable）
Frame Rate	About 60 FPS（requestAnimationFrame）
Operating Environment	Web browser

Controller

Keyboard Input

 /¯¯¯\_/¯¯¯\
|  W  |  ↑  |
| A D | ← → |
|  S  |  ↓  |
 \___/¯\___/

Screen Swipe

|¯¯¯¯¯¯¯¯|¯¯¯¯¯¯¯¯|
|   👆    |   👆   |
| 👈   👉 | 👈   👉 |
|   👇    |   👇   |
|________|________|

Resource Editor

Map

🈳🈳🈳🈳🈳🈳🈳🈳🈳
🈳⛅🈳🈳🎌🈳🈳🌧🈳
🈳🈳🈳🌳🗻🌳🈳🈳🈳
🈳🈳🌳🗻🗻🗻🌳🈳🈳
🈳🌳🗻🗻🗻🗻🗻🌳🈳
🌳🗻🗻🗻🗻🗻🗻🗻🌳

Sound

🎹🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳
🎹🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳
🎹🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳
🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳🈳🎹

Manual

• Usage Overview
• Module documentation on Pursuit

Sample Program

See example for the implementation.

yarn

Output File

yarn bundle:example

open dist/example/hello/index.html
open dist/example/basic/index.html
open dist/example/emodius/index.html

Development

yarn build

yarn dev

Known Issue

• emoji rotate (45°, 135°, 225°, 315°) problem on canvas Why won't emojis render when rotated to 45 (or 315) degrees?

License

MIT