A simple browser-based snake game allowing basic movement in four directions using arrow keys.

Introduction to the Simple Snake Game Template

This template provides a simple browser-based snake game that allows basic movement in four directions using the arrow keys. The game is built using Flask for the backend and JavaScript for the frontend. This guide will walk you through the steps to get the game up and running using the Lazy platform.

Clicking Start with this Template

To get started with the Simple Snake Game template, click the Start with this Template button in the Lazy Builder interface.

Test

After starting with the template, press the Test button. This will begin the deployment of the app and launch the Lazy CLI.

Using the App

Once the app is deployed, you can access the game through the provided server link. The game interface will display a canvas where the snake game will be rendered. Use the arrow keys to control the snake's movement.

Game Controls

• Arrow Keys: Use the arrow keys to move the snake in four directions (up, down, left, right).

Code Overview

template.html

This file contains the HTML structure for the game interface. It includes a canvas element where the game will be rendered and a script tag to include the JavaScript file.

```html

Snake Game

```

main.py

This file sets up the Flask application and serves the HTML template. It also configures the Gunicorn server for deployment.

```python import logging from flask import Flask, render_template from gunicorn.app.base import BaseApplication

logging.basicConfig(level=logging.INFO) logger = logging.getLogger(name)

app = Flask(name)

@app.route("/") def root_route(): return render_template("template.html")

class StandaloneApplication(BaseApplication): def init(self, app, options=None): self.application = app self.options = options or {} super().init()

def load_config(self):
    config = {
        key: value
        for key, value in self.options.items()
        if key in self.cfg.settings and value is not None
    }
    for key, value in config.items():
        self.cfg.set(key.lower(), value)

def load(self):
    return self.application

if name == "main": options = {"bind": "%s:%s" % ("0.0.0.0", "8080"), "workers": 4, "loglevel": "info"} StandaloneApplication(app, options).run() ```

snake.js

This file contains the JavaScript code for the snake game. It handles the game logic, including drawing the snake, moving it, and changing its direction based on user input.

```javascript const canvas = document.getElementById('gameCanvas'); const ctx = canvas.getContext('2d');

let snake = [{x: 200, y: 200}]; let dx = 10; let dy = 0; let changingDirection = false;

function clearCanvas() { ctx.fillStyle = 'black'; ctx.fillRect(0, 0, canvas.width, canvas.height); }

function drawSnakePart(snakePart) { ctx.fillStyle = 'lightgreen'; ctx.strokeStyle = 'darkgreen'; ctx.fillRect(snakePart.x, snakePart.y, 10, 10); ctx.strokeRect(snakePart.x, snakePart.y, 10, 10); }

function drawSnake() { snake.forEach(drawSnakePart); }

function advanceSnake() { const head = {x: snake[0].x + dx, y: snake[0].y + dy}; snake.unshift(head); snake.pop(); }

function changeDirection(event) { const LEFT_KEY = 37; const RIGHT_KEY = 39; const UP_KEY = 38; const DOWN_KEY = 40;

if (changingDirection) return; changingDirection = true;

const keyPressed = event.keyCode; const goingUp = dy === -10; const goingDown = dy === 10; const goingRight = dx === 10; const goingLeft = dx === -10;

if (keyPressed === LEFT_KEY && !goingRight) { dx = -10; dy = 0; } if (keyPressed === UP_KEY && !goingDown) { dx = 0; dy = -10; } if (keyPressed === RIGHT_KEY && !goingLeft) { dx = 10; dy = 0; } if (keyPressed === DOWN_KEY && !goingUp) { dx = 0; dy = 10; } }

function randomTen(min, max) { return Math.round((Math.random() * (max-min) + min) / 10) * 10; }

function main() { changingDirection = false; setTimeout(function onTick() { clearCanvas(); advanceSnake(); drawSnake(); main(); }, 100); }

document.addEventListener("keydown", changeDirection); main(); ```

requirements.txt

This file lists the dependencies required for the app.

Flask gunicorn werkzeug

Integrating the App

No additional external integrations are required for this template. The game runs entirely within the browser and does not require any external APIs or services.

By following these steps, you should have a fully functional snake game running on the Lazy platform. Enjoy coding and have fun playing the game!