juskek

class MyApp extends StatelessWidget {
  ...
  Widget build(...) {
  return MaterialApp(..., home: MyHomePage());
 }
}

class MyHomePage extends StatefulWidget {
  ...
  _MyHomePageState createState() => _MyHomePageState();

juskek

void paint(ui.Canvas canvas, ui.Size size) {
    final Offset centerPoint = Offset(0, 0);

    // math for each branch
    final angle = 360 / nodes;
    // list of branch end points (x,y)
    List<List<double>> points = [];
    // for each branch
    for (int i = 0; i < nodes; i++) {
      final double lineLength = 200;

juskek

class RadarChartTransition extends AnimatedWidget {
  final AnimationController controller;
  final int nodes;
  final int segments;
  final List<double> data;
  final List<String> labels;

  // CONSTRUCTOR
  RadarChartTransition(
    this.controller,

juskek

// in pubspec.yaml 
flame: ^0.29.4
// in main.dart
import 'package:flutter/material.dart';
import 'package:flame/game.dart'; // for creating Game class
import 'package:flame/gestures.dart'; // for TapDetector mixin
import 'package:flutter/gestures.dart'; // for TapDownDetails class
import 'dart:ui'; // for Canvas and Size
// in console
flutter run --no-sound-null-safety

juskek

class CustomGame extends Game {   
  @override
  void render(Canvas canvas) {     
  // TODO: implement render   
  }    
  @override
  void update(double t) {     
  // TODO: implement update   
  } 
}

juskek

void main() {
  CustomGame game = CustomGame(); // create instance of class
  runApp(game.widget); // run game
}

juskek

class CustomGame extends Game {
Size? screenSize;
bool hasPressed;
// this will be CustomGame's resize function
@override
void resize (Size size) {
screenSize = size; // assign Game widget size to screenSize
super.resize(size); // call Game's resize function again
}
... // update and render functions

juskek

void render(Canvas canvas) {
  /// BACKGROUND (BOTTOMMOST LAYER)
  Rect bgRect = Rect.fromLTWH(0, 0, screenSize!.width,screenSize!.height);
  Paint bgPaint = Paint();
  bgPaint.color = Color(0xffbbcc00);
  canvas.drawRect(bgRect, bgPaint);
  /// TARGET BOX (TOPMOST LAYER)
  print(screenSize); // ! target box does not change with screen size
  double screenCenterX = screenSize!.width / 2;
  double screenCenterY = screenSize!.height / 2;

juskek

import 'package:flame/gestures.dart'; // for TapDetector mixin
import 'package:flutter/gestures.dart'; // for TapDownDetails class

class BoxGame extends Game with TapDetector {
  
  bool hasWon = false;

  @override
  void onTapDown(TapDownDetails tapDownDetails) {
    // handle taps here

juskek

void main() {
  print('Hello World!');

  List<int> testList = List.generate(5, (index) => index);
  print(testList);
}

// OUTPUT:
// Hello World!
// [0,1,2,3,4]