Retro Snake

Web-based Retro Snake game. Demo, server backend project.

Prerequisites

You will need the following things properly installed on your computer.

• Git
• Node.js (with NPM)

Installation

• git clone <repository-url> this repository
• change into the new directory
• npm install

Hash

Hash is required for the server requests. You may use your own hash function or copy the default implementation.

cp js/encrypt.example.js js/encrypt.js

Production build

• npm run build

Run at localhost

• npm run start

Open URL http://localhost:8080/ and enjoy.

Controls

Key	Alternative	Action
W	ARROW UP	Move up
S	ARROW DOWN	Move down
A	ARROW LEFT	Move left
D	ARROW RIGHT	Move right
	SPACE	Throw
P	ESCAPE	Pause
R	ENTER	Restart
H		Help
C		Color mode
V		Vibration
T		Score table

Levels

All levels located into src/js/levels.js file. Field size is 10x20.

Format:

module.exports = [
    {
        speed: 0,
        score: 100,
        items: [
            {
                type: 'barrier',
                start: [4, 5],
                end: [5, 5],
                pattern: [
                    [1, 0],
                    [1, 0],
                    [-1, 0],
                    [-1, 0]
                ]
            },
            {
                type: 'wall',
                start: [0, 4],
                end: [1, 5]
            }
        ]
    }
];

• number speed - start speed
• number score - minimum score to level up
• Array items - items list (please read below)
• string items[{type}] - item type (wall or barrier)

Wall item

Wall item is just a wall. If the snake touches the wall the game end.

• string type - 'wall'
• [number, number] start - wall start coordinates
• [number, number] end - wall end coordinates

The wall is a filled rectangle. If you want to draw a blank rectangle, then you need to combine four wall items.

Barrier

Barrier is a moving wall.

• string type - 'wall'
• [number, number] start - wall start coordinates
• [number, number] end - wall end coordinates
• Array<[number, number]> pattern - motion pattern cycle

Each element of the motion pattern is an increment of the current barrier coordinates. The movement is cyclic, so be careful when creating a pattern.

License

MIT