Monkey Touch Game App – Mobile Games App in Flutter

Here's a comprehensive tutorial on creating a Monkey Touch Game app using Flutter.

Introduction

Monkey Touch is a popular mobile game where monkeys throw bananas at each other, and the goal is to collect as many bananas as possible. In this tutorial, we will build a Monkey Touch game using Flutter, a popular framework for building mobile apps.

Prerequisites

To follow this tutorial, you should have:

1. A basic understanding of Dart programming language.
2. Flutter installed on your system.
3. A text editor or IDE (IntelliJ, Android Studio, etc.).
4. A physical or emulated Android or iOS device for testing.

Setup and Installation

1. Open your terminal or command prompt and navigate to your project directory.
2. Run the following command to create a new Flutter project:

flutter create monkey_touch_game

1. Open the project directory in your IDE and navigate to the lib folder.
2. Remove the existing files and directories, and create a new file called main.dart.

Game Logic and Layout

To start with the game, let's break it down into small pieces.

Game Logic

The game logic involves:

1. Monkey: The monkeys will be moving around on the screen and throwing bananas.
2. Bananas: The bananas will be thrown by the monkeys and will need to be collected.
3. Score: The score will be updated based on the number of bananas collected.
4. Game Over: The game will be over when all the monkeys are caught by the players.

Game Layout

The game layout will be a simple canvas with two monkeys, each throwing a banana. The bananas will need to be collected, and the score will be displayed at the top.

Game Code

In your main.dart file, add the following code:

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Monkey Touch Game',
      theme: ThemeData.dark(),
      home: Scaffold(
        appBar: AppBar(
          title: Text('Monkey Touch Game'),
        ),
        body: Center(
          child: GameScreen(),
        ),
      ),
    );
  }
}

class GameScreen extends StatefulWidget {
  @override
  _GameScreenState createState() => _GameScreenState();
}

class _GameScreenState extends State<GameScreen> {
  int score = 0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Score: $score'),
      ),
      body: Stack(
        children: [
          // Banana canvas
          Container(
            color: Colors.black,
          ),
          // Monkeys
          AnimatedPositioned(
            curve: Curves.easeIn,
            duration: Duration(milliseconds: 500),
            top: 300,
            left: Random().nextInt(300),
            child: Image.asset('assets/monkey1.png'),
          ),
          AnimatedPositioned(
            curve: Curves.easeIn,
            duration: Duration(milliseconds: 500),
            top: 300,
            right: Random().nextInt(300),
            child: Image.asset('assets/monkey2.png'),
          ),
        ],
      ),
    );
  }
}

This code sets up the basic structure of our game, including the navigation, layout, and initialization of the game state. We also set up our GameScreen with a Stack and add our AnimatedPositioned widgets for our monkeys.

Adding Assets

To add the game assets (monkeys, bananas, etc.), go to the assets/ directory and add the required images. You can get the image links on internet or create your own or download from somewhere.

You need to add the path of the assets in pubspec.yaml in assets section and run flutter pub pub run flutter assets in your terminal.

Animations and Collision Detection

Let's add animations and collision detection to our game:

Animations

In your GameScreen widget, add the following code:

// Monkey animation
animationController = AnimationController(
  vsync: this,
  duration: Duration(milliseconds: 500),
)

// Banana animation
bananaAnimationController = AnimationController(
  vsync: this,
  duration: Duration(milliseconds: 500),
)

This code sets up animations for our monkeys and bananas.

Collision Detection

In your GameScreen widget, add the following code:

// Collision detection
Positioned(
  top: 300,
  child: GestureDetector(
    onPanDown: (details) {
      // If the monkey is touched
      if (details.globalPosition.dx < 200) {
        // Score incremented
        score++;
        setState(() {});
      }
    },
  ),
  child: Image.asset('assets/monkey1.png'),
),

This code sets up collision detection for our monkeys. If a monkey is touched, it increments the score.

That's it! You can now run your game app on your device or simulator.