refactoring

This commit is contained in:
Andrei Stoica 2024-12-21 06:36:11 -05:00
parent c8bcf620ef
commit c133eda312
5 changed files with 266 additions and 229 deletions

61
lib/clasic.dart Normal file
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@ -0,0 +1,61 @@
import 'package:flutter/material.dart';
import 'state.dart';
import 'game.dart';
class ClassicGame extends StatefulWidget {
const ClassicGame({super.key});
@override
State<ClassicGame> createState() => _ClassicGameState();
}
class _ClassicGameState extends State<ClassicGame> {
TTCState turn = TTCState.x;
late TTCGame game;
String get turnText => switch (turn) {
TTCState.empty => "",
TTCState.x => "X",
TTCState.o => "O",
};
void onTurnEnd() {
setState(() {
turn = switch (turn) {
TTCState.x => TTCState.o,
TTCState.o => TTCState.x,
_ => TTCState.x
};
});
}
@override
void initState() {
super.initState();
game = TTCGame(
turn: turn,
onClick: onTurnEnd,
);
}
@override
Widget build(BuildContext context) {
return Column(
mainAxisSize: MainAxisSize.min,
children: [
const Spacer(flex: 5),
Center(
child: Text(
"$turnText's turn",
style: const TextStyle(fontSize: 30, fontWeight: FontWeight.bold),
)),
const Spacer(flex: 1),
TTCGame(
turn: turn,
onClick: onTurnEnd,
),
const Spacer(flex: 5),
],
);
}
}

139
lib/game.dart Normal file
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@ -0,0 +1,139 @@
import 'package:flutter/material.dart';
import 'state.dart';
import 'util.dart';
/// Board of a single game of tic tac toe
class TTCGame extends StatefulWidget {
const TTCGame({
super.key,
required this.turn,
this.data,
this.onClick,
});
final TTCState turn;
final List<TTCState>? data;
/// hook into acction of tapping on square
final Function? onClick;
@override
State<StatefulWidget> createState() => _TTCGameState();
}
class _TTCGameState extends State<TTCGame> {
late TTCState turn;
late List<TTCState> data;
void setCellState(int index) {
switch (data[index]) {
case TTCState.empty:
setState(() {
data[index] = turn;
turn = switch (turn) {
TTCState.x => TTCState.o,
TTCState.o => TTCState.x,
TTCState.empty => TTCState.empty,
};
});
widget.onClick?.call();
notifyWin();
break;
default:
ScaffoldMessenger.of(context)
..clearSnackBars()
..showSnackBar(const SnackBar(
content: Text("Invalid Choice: cell already has value")));
}
}
void notifyWin() {
TTCState state = Util.checkWin(data);
if (state != TTCState.empty) {
ScaffoldMessenger.of(context)
..clearSnackBars()
..showSnackBar(
SnackBar(content: Text("${state.name.toUpperCase()} wins")));
}
}
Border _genCellBorder(
int index, {
BorderSide borderSide = const BorderSide(),
}) {
return Border(
top: index < 3 ? BorderSide.none : borderSide,
bottom: index > 5 ? BorderSide.none : borderSide,
left: [0, 3, 6].contains(index) ? BorderSide.none : borderSide,
right: [2, 5, 8].contains(index) ? BorderSide.none : borderSide,
);
}
Widget _genCell(int index, TTCState state) => Container(
decoration: BoxDecoration(border: _genCellBorder(index)),
child: TTCCell(
state: state,
stateSetCallback: () {
setCellState(index);
},
));
@override
void initState() {
super.initState();
turn = widget.turn;
data = widget.data ??
<TTCState>[
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
];
}
@override
Widget build(BuildContext context) {
List<Widget> cells = [];
for (final (index, state) in data.indexed) {
cells.add(_genCell(index, state));
}
return GridView.count(
crossAxisCount: 3,
shrinkWrap: true,
children: cells,
);
}
}
class TTCCell extends StatelessWidget {
const TTCCell({
super.key,
required this.state,
this.stateSetCallback,
this.textStyle,
});
final TTCState state;
final VoidCallback? stateSetCallback;
final TextStyle? textStyle;
String get text => switch (state) {
TTCState.empty => "",
TTCState.x => "X",
TTCState.o => "O",
};
@override
Widget build(BuildContext context) => InkWell(
onTap: stateSetCallback,
child: Center(
child: Text(text, style: textStyle),
));
}

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@ -1,4 +1,5 @@
import 'package:flutter/material.dart'; import 'package:flutter/material.dart';
import 'clasic.dart';
void main() { void main() {
runApp(const MyApp()); runApp(const MyApp());
@ -30,238 +31,26 @@ class MyHomePage extends StatefulWidget {
} }
class _MyHomePageState extends State<MyHomePage> { class _MyHomePageState extends State<MyHomePage> {
TTCState turn = TTCState.x;
late TTCGame game;
String get turnText => switch (turn) {
TTCState.empty => "",
TTCState.x => "X",
TTCState.o => "O",
};
void onTurnEnd() {
setState(() {
turn = switch (turn) {
TTCState.x => TTCState.o,
TTCState.o => TTCState.x,
_ => TTCState.x
};
});
}
@override
void initState() {
super.initState();
game = TTCGame(
turn: turn,
onClick: onTurnEnd,
);
}
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
return Scaffold( return Scaffold(
appBar: AppBar( drawer: Drawer(
title: Text(widget.title), child: ListView(
backgroundColor: Theme.of(context).colorScheme.inversePrimary, children: [
), DrawerHeader(
body: Padding( child: Text("Game Types"),
),
ListTile(title: Text("Clasic")),
ListTile(title: Text("Super")),
],
)),
appBar: AppBar(
title: Text(widget.title),
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
),
body: Padding(
padding: const EdgeInsets.all(10), padding: const EdgeInsets.all(10),
child: Column( child: ClassicGame(),
mainAxisSize: MainAxisSize.min, ));
children: [
const Spacer(flex: 5),
Center(
child: Text(
"$turnText's turn",
style:
const TextStyle(fontSize: 30, fontWeight: FontWeight.bold),
)),
const Spacer(flex: 1),
TTCGame(
turn: turn,
onClick: onTurnEnd,
),
const Spacer(flex: 5),
],
)),
);
} }
} }
enum TTCState { empty, x, o }
/// Board of a single game of tic tac toe
class TTCGame extends StatefulWidget {
const TTCGame({
super.key,
required this.turn,
this.data,
this.onClick,
});
final TTCState turn;
final List<TTCState>? data;
/// hook into acction of tapping on square
final Function? onClick;
@override
State<StatefulWidget> createState() => _TTCGameState();
}
class _TTCGameState extends State<TTCGame> {
late TTCState turn;
late List<TTCState> data;
void setCellState(int index) {
switch (data[index]) {
case TTCState.empty:
setState(() {
data[index] = turn;
turn = switch (turn) {
TTCState.x => TTCState.o,
TTCState.o => TTCState.x,
TTCState.empty => TTCState.empty,
};
});
widget.onClick?.call();
notifyWin();
break;
default:
ScaffoldMessenger.of(context)
..clearSnackBars()
..showSnackBar(const SnackBar(
content: Text("Invalid Choice: cell already has value")));
}
}
Iterable<TTCState> getRow(int index) => data.getRange(index, index + 3);
Iterable<TTCState> getCol(int index) => [
data[index],
data[index + 3],
data[index + 3 * 2],
];
Iterable<TTCState> getCross(int index) {
if (index == 0) {
return [data[0], data[4], data[8]];
}
return [data[3], data[4], data[6]];
}
TTCState _checkRow(Iterable<TTCState> row) => row.reduce((value, element) =>
(element == TTCState.empty || value == TTCState.empty || element != value)
? TTCState.empty
: value);
TTCState _checkBoard(Iterable<TTCState> rowValues) =>
rowValues.reduce((value, element) {
if (value != TTCState.empty) {
return value;
}
if (element != TTCState.empty) {
return element;
}
return TTCState.empty;
});
TTCState _checkWin() {
Iterable<TTCState> rows = Iterable.generate(3, (i) => _checkRow(getRow(i)));
Iterable<TTCState> cols = Iterable.generate(3, (i) => _checkRow(getCol(i)));
Iterable<TTCState> crosses =
Iterable.generate(2, (i) => _checkRow(getCross(i)));
return _checkBoard([...rows, ...cols, ...crosses]);
}
void notifyWin() {
TTCState state = _checkWin();
if (state != TTCState.empty) {
ScaffoldMessenger.of(context)
..clearSnackBars()
..showSnackBar(
SnackBar(content: Text("${state.name.toUpperCase()} wins")));
}
}
Border _genCellBorder(
int index, {
BorderSide borderSide = const BorderSide(),
}) {
return Border(
top: index < 3 ? BorderSide.none : borderSide,
bottom: index > 5 ? BorderSide.none : borderSide,
left: [0, 3, 6].contains(index) ? BorderSide.none : borderSide,
right: [2, 5, 8].contains(index) ? BorderSide.none : borderSide,
);
}
Widget _genCell(int index, TTCState state) => Container(
decoration: BoxDecoration(border: _genCellBorder(index)),
child: TTCCell(
state: state,
stateSetCallback: () {
setCellState(index);
},
));
@override
void initState() {
super.initState();
turn = widget.turn;
data = widget.data ??
<TTCState>[
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
TTCState.empty,
];
}
@override
Widget build(BuildContext context) {
List<Widget> cells = [];
for (final (index, state) in data.indexed) {
cells.add(_genCell(index, state));
}
return GridView.count(
crossAxisCount: 3,
shrinkWrap: true,
children: cells,
);
}
}
class TTCCell extends StatelessWidget {
const TTCCell({
super.key,
required this.state,
this.stateSetCallback,
this.textStyle,
});
final TTCState state;
final VoidCallback? stateSetCallback;
final TextStyle? textStyle;
String get text => switch (state) {
TTCState.empty => "",
TTCState.x => "X",
TTCState.o => "O",
};
@override
Widget build(BuildContext context) => InkWell(
onTap: stateSetCallback,
child: Center(
child: Text(text, style: textStyle),
));
}

1
lib/state.dart Normal file
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@ -0,0 +1 @@
enum TTCState { empty, x, o }

47
lib/util.dart Normal file
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@ -0,0 +1,47 @@
import 'state.dart';
class Util {
static Iterable<TTCState> getRow(int index, List<TTCState> data) =>
data.getRange(index, index + 3);
static Iterable<TTCState> getCol(int index, List<TTCState> data) => [
data[index],
data[index + 3],
data[index + 3 * 2],
];
static Iterable<TTCState> getCross(int index, List<TTCState> data) {
if (index == 0) {
return [data[0], data[4], data[8]];
}
return [data[3], data[4], data[6]];
}
static TTCState checkRow(Iterable<TTCState> row) =>
row.reduce((value, element) => (element == TTCState.empty ||
value == TTCState.empty ||
element != value)
? TTCState.empty
: value);
static TTCState checkBoard(Iterable<TTCState> rowValues) =>
rowValues.reduce((value, element) {
if (value != TTCState.empty) {
return value;
}
if (element != TTCState.empty) {
return element;
}
return TTCState.empty;
});
static TTCState checkWin(List<TTCState> data) {
Iterable<TTCState> rows =
Iterable.generate(3, (i) => checkRow(getRow(i, data)));
Iterable<TTCState> cols =
Iterable.generate(3, (i) => checkRow(getCol(i, data)));
Iterable<TTCState> crosses =
Iterable.generate(2, (i) => checkRow(getCross(i, data)));
return checkBoard([...rows, ...cols, ...crosses]);
}
}