Save hangman game by flutter

 Save hangman game by flutter framework

Game's video clip:

Free source code:

main.dart

import 'package:flutter/material.dart';

import 'home_page.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      debugShowCheckedModeBanner: false,
      home: HomePage(),
    );
  }
}

home_page.dart

import 'dart:async';
import 'dart:math';

import 'package:flutter/material.dart';
import 'package:english_words/english_words.dart';
import 'package:google_fonts/google_fonts.dart';

class HomePage extends StatefulWidget {
  const HomePage({Key? key}) : super(key: key);

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  //google fonts
  static var myNewFontWhite = GoogleFonts.pressStart2p(
      textStyle: const TextStyle(letterSpacing: 2, color: Colors.white));

  static var myNewFont = GoogleFonts.pressStart2p(
      textStyle: const TextStyle(color: Colors.white));

  static var myNewFont2 = GoogleFonts.pressStart2p(
      textStyle: const TextStyle(letterSpacing: 2, fontSize: 15, color: Colors.white));

  List<String> letter = [];
  static List<String> storeLetter = [];
  static List<String> storeLetterForShowing = [];
  var matchingWord = 0;
  var showRandomWord = 0;
  var hangNumber = 1;
  var stillLife = 6;
  var score = 0;
  bool gameIsOver = false;

  List<String> randWord = [];

  List<String> letters = [
    'q',
    'w',
    'e',
    'r',
    't',
    'y',
    'u',
    'i',
    'o',
    'p',
    '',
    'a',
    's',
    'd',
    'f',
    'g',
    'h',
    'j',
    'k',
    '',
    '',
    'l',
    'z',
    'x',
    'c',
    'v',
    'b',
    'n',
    'm',
    '',
  ];

  @override
  void initState() {
    generateWords();
    timer();
    super.initState();
  }

  void timer() {
    Timer.periodic(const Duration(milliseconds: 10), (timer) {
      storeLetterForShowing.shuffle();
      timer.cancel();
    });
  }

  void generateWords() {
    nouns.take(1000).forEach((element) {
      if (element.length == 7) {
        randWord.add(element.toString());
      }
    });

    int totalWord = 0;
    for (int i = 0; i < 7; i++) {
      int rand = Random().nextInt(randWord.length);
      totalWord++;
      if (totalWord < 7) {
        guessWord(rand);
      }
    }
    print(storeLetter.first);
  }

  void guessWord(int rand) {
    setState(() {
      storeLetter.add(randWord.elementAt(rand));
      storeLetterForShowing.add(randWord.elementAt(rand));
    });
  }

  void setLetter(String l) {
    setState(() {
      if (hangNumber == 6) {
        gameIsOver = true;
        hangNumber = 0;
        showDiaLogAlert('Sorry! man');
      }

      if (matchingWord == 6) {
        showDiaLogAlert('Thanks God, Saved!!');
      }

      if (letter.length < 8 &&
          l.toString() == storeLetter.first.split('').elementAt(matchingWord) &&
          storeLetter.first.contains(l.toString())) {
        letter.add(l.toString());
        matchingWord++;
        score++;
      } else {
        hangNumber++;
        stillLife--;
      }
    });
  }

  void allVariable() {
    setState(() {
      letter = [];
      storeLetter = [];
      storeLetterForShowing = [];
      matchingWord = 0;
      showRandomWord = 0;
      hangNumber = 1;
      stillLife = 6;
      score = 0;
      gameIsOver = false;

      generateWords();
      timer();
    });
  }

  void gameOver() {
    allVariable();
    Navigator.of(context).pop();
  }

  void againPlay() {
    allVariable();
    Navigator.of(context).pop();
  }

  showDiaLogAlert(String txt) {
    return showDialog(
        context: context,
        builder: (BuildContext context) {
          return AlertDialog(
            title: Text(txt),
            content: const Text('Play again'),
            actions: [
              ElevatedButton(
                  onPressed: () {
                    gameOver();
                  },
                  child: const Text('No')),
              ElevatedButton(
                  onPressed: () {
                    againPlay();
                  },
                  child: const Text('Yes')),
            ],
          );
        });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.grey[800],
      body: Column(
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.end,
            children: [
              Padding(
                padding: const EdgeInsets.only(top: 30.0, right: 10),
                child: Center(
                    child: Text(
                  'lives $stillLife',
                  style: myNewFont,
                )),
              ),
              Padding(
                padding: const EdgeInsets.only(top: 30.0, right: 20),
                child: Center(
                    child: Text(
                  '| Score $score',
                  style: myNewFont,
                )),
              ),
            ],
          ),
          Expanded(
              flex: 3,
              child: Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Center(
                    child: Image.asset(
                      'assets/images/h$hangNumber.png',
                      color: Colors.white,
                      fit: BoxFit.cover,
                    ),
                  ),
                ],
              )),
          Expanded(
            child: GridView.builder(
                itemCount: letter.length,
                physics: const NeverScrollableScrollPhysics(),
                gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
                  crossAxisCount: 7,
                ),
                itemBuilder: (_, int index) {
                  return Center(
                    child: letter.isEmpty
                        ? const Text('_')
                        : Text(
                            letter[index],
                            style: myNewFont2,
                          ),
                  );
                }),
          ),
          Expanded(
              child: GridView.builder(
                  itemCount: storeLetterForShowing.length,
                  physics: const NeverScrollableScrollPhysics(),
                  gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
                    crossAxisCount: 6,
                  ),
                  itemBuilder: (_, int index) {
                    return Center(
                      child: storeLetterForShowing.isNotEmpty
                          ? Text(
                              '${storeLetterForShowing.elementAt(index).substring(0, 3)}..',
                              style: myNewFont,
                            )
                          : const Text(''),
                    );
                  })),
          Expanded(
              flex: 2,
              child: GridView.builder(
                  itemCount: 30,
                  physics: const NeverScrollableScrollPhysics(),
                  gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
                      crossAxisCount: 10),
                  itemBuilder: (BuildContext context, int index) {
                    return Padding(
                      padding: const EdgeInsets.all(2.0),
                      child: GestureDetector(
                        onTap: () {
                          setState(() {
                            setLetter(letters[index]);
                          });
                        },
                        child: Container(
                          decoration: BoxDecoration(
                              borderRadius: BorderRadius.circular(5),
                              color: Colors.grey[700]),
                          child: Center(
                              child: Text(
                            letters[index].toUpperCase().toString(),
                            style: myNewFontWhite,
                          )),
                        ),
                      ),
                    );
                  })),
        ],
      ),
    );
  }
}