├── GoF.dart
├── LICENSE
├── readme.md
└── screenshot.jpg


/GoF.dart:
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  1 | //Made with dartpad.dartlang.org <3
  2 | import 'dart:async';
  3 | import 'package:flutter/material.dart';
  4 | 
  5 | final Color cellColor = Colors.lightBlue;
  6 | final Color bgColor = new Color.fromARGB(255, 245, 245, 255);
  7 | final TargetPlatform platform = TargetPlatform.android;
  8 | 
  9 | List<List<bool>> cells;
 10 | final width = 700.0, height = 700.0;
 11 | final xRes = 50, yRes = 50;
 12 | double cWidth, cHeight;
 13 | bool paused = false, fillMode = true;
 14 | 
 15 | void main() {
 16 |   runApp(GameOfLife());
 17 | }
 18 | 
 19 | class GOLPainter extends CustomPainter {
 20 |   List<List<bool>> hiddenMat1 = new List<List<bool>>(xRes);
 21 |   List<List<bool>> hiddenMat2 = new List<List<bool>>(xRes);
 22 | 
 23 |   GOLPainter(double width, double height) {
 24 |     cWidth = width / xRes;
 25 |     cHeight = height / yRes;
 26 |     cells = hiddenMat1;
 27 | 
 28 |     for (var i = 0; i < xRes; i++) {
 29 |       hiddenMat1[i] = new List<bool>(yRes);
 30 |       hiddenMat2[i] = new List<bool>(yRes);
 31 |       for (var j = 0; j < yRes; j++) hiddenMat1[i][j] = false;
 32 |     }
 33 |   }
 34 | 
 35 |   void update() {
 36 |     if (paused) return;
 37 |     List<List<bool>> next = (cells == hiddenMat1 ? hiddenMat2 : hiddenMat1);
 38 |     for (var i = 0; i < xRes; i++)
 39 |       for (var j = 0; j < yRes; j++) {
 40 |         int nCount = countNeighbours(i, j);
 41 |         next[i][j] = !cells[i][j] && nCount == 3 ||
 42 |             cells[i][j] && nCount >= 2 && nCount <= 3;
 43 |       }
 44 |     cells = next;
 45 |   }
 46 | 
 47 |   int countNeighbours(int x, int y) {
 48 |     int count = 0;
 49 |     for (var i = x - 1; i <= x + 1; i++)
 50 |       for (var j = y - 1; j <= y + 1; j++) {
 51 |         if (cells[(i + xRes) % xRes][(j + yRes) % yRes]) count++;
 52 |       }
 53 |     count -= (cells[x][y] ? 1 : 0);
 54 |     return count;
 55 |   }
 56 | 
 57 |   @override
 58 |   void paint(Canvas canvas, Size size) {
 59 |     canvas.drawRect(Offset(0, 0) & Size(cWidth * xRes, cHeight * yRes),
 60 |         Paint()..color = bgColor);
 61 |     for (var i = 0; i < xRes; i++)
 62 |       for (var j = 0; j < yRes; j++) {
 63 |         if (cells[i][j]) drawCell(canvas, i * cWidth, j * cHeight, cells[i][j]);
 64 |       }
 65 |   }
 66 | 
 67 |   @override
 68 |   bool shouldRepaint(GOLPainter oldDelegate) {
 69 |     return true;
 70 |   }
 71 | 
 72 |   void drawCell(Canvas canvas, num x, num y, bool cellState) {
 73 |     canvas.drawRect(
 74 |         Offset(x, y) & Size(cWidth, cHeight), Paint()..color = cellColor);
 75 |   }
 76 | }
 77 | 
 78 | class GameOfLife extends StatefulWidget {
 79 |   @override
 80 |   State<StatefulWidget> createState() {
 81 |     return _GameOfLifeState();
 82 |   }
 83 | }
 84 | 
 85 | class _GameOfLifeState extends State<GameOfLife> {
 86 |   IconData icon = Icons.pause;
 87 |   Timer timer;
 88 |   GOLPainter painter = GOLPainter(width, height);
 89 | 
 90 |   @override
 91 |   void initState() {
 92 |     timer = new Timer.periodic(Duration(milliseconds: 100), (Timer t) {
 93 |       setState(() {
 94 |         painter.update();
 95 |       });
 96 |     });
 97 |     super.initState();
 98 |   }
 99 | 
100 |   void _pointerClick(PointerEvent e) {
101 |     fillMode =
102 |         !cells[e.localPosition.dx ~/ cWidth][e.localPosition.dy ~/ cHeight];
103 |     _pointerDraw(e);
104 |   }
105 | 
106 |   void _pointerDraw(PointerEvent e) {
107 |     cells[e.localPosition.dx ~/ cWidth][e.localPosition.dy ~/ cHeight] =
108 |         fillMode;
109 |   }
110 | 
111 |   @override
112 |   Widget build(BuildContext context) {
113 |     return MaterialApp(
114 |       debugShowCheckedModeBanner: false,
115 |       home: Scaffold(
116 |         appBar: AppBar(title: Text("Conways Game of Flutter")),
117 |         body: Container(
118 |           constraints: BoxConstraints.expand(),
119 |           child: Column(
120 |             crossAxisAlignment: CrossAxisAlignment.center,
121 |             mainAxisAlignment: MainAxisAlignment.center,
122 |             children: [
123 |               Container(
124 |                 child: Listener(
125 |                   onPointerMove: _pointerDraw,
126 |                   onPointerDown: _pointerClick,
127 |                   child: SizedBox(
128 |                     width: width,
129 |                     height: height,
130 |                     child: CustomPaint(
131 |                       key: ValueKey(timer.tick),
132 |                       painter: painter,
133 |                     ),
134 |                   ),
135 |                 ),
136 |               ),
137 |             ],
138 |           ),
139 |         ),
140 |         floatingActionButton: FloatingActionButton(
141 |           child: new Icon(icon, size: 25.0),
142 |           onPressed: () {
143 |             paused = !paused;
144 |             icon = icon == Icons.pause ? Icons.play_arrow : Icons.pause;
145 |           },
146 |         ),
147 |       ),
148 |     );
149 |   }
150 | }


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/LICENSE:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2020 SlaxXxX
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


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/readme.md:
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 1 | # Conway's Game of Flutter
 2 | 
 3 | Simple implementation of conway's game of life ( https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life )
 4 | 
 5 | <img src="screenshot.jpg" style="max-width:50%;" />
 6 | 
 7 | Play with it on Dartpad: https://dartpad.dartlang.org/d651454148dd0e305999961c05cde575
 8 | 
 9 | Add/Remove cells by clicking or dragging with your mouse.
10 | 
11 | Pause/Resume the simulation to draw your piece of art in peace.
12 | 


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/screenshot.jpg:
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https://raw.githubusercontent.com/Slx-hub/ConwaysGameOfFlutter/76761949cabb9025ac533c97a79fcf96a9042ff5/screenshot.jpg


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