How to Create a 2D Snake Game in Flutter

Jan 17 2023 · Dart 2.17, Flutter 3.0, Android Studio or VS Code

Part 1: How to Create a 2D Snake Game in Flutter

04. Create Piece Positions

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Previous episode: 03. Understanding the Starter Project Next episode: 05. Move the Pieces to Next Position

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In this video, you will be displaying the Piece widget at a random position on the screen within the play area. To do this, first you will be generating a random position on the screen within the bounds of the play area and then render a Piece at the generated position.

draw() {
    if(positions.length == 0) {
        
    }
}

draw() {
    if(positions.length == 0) {
        positions.add(getRandomPositionWithinRange()); //add this
    }
}

getPieces() {
    List<Piece> pieces = [];
}

getPieces() {
    List<Piece> pieces = [];
    draw(); // Add this
}

getPieces() {
    List<Piece> pieces = [];
    draw();

    // Add this
    for(int i = 0; i < positions.length; i++) { 
        Piece p = Piece(
            posX: positions[i].dx.toInt(),
            posY: positions[i].dy.toInt(),
            size: step,
            color: Colors.red,
        );
    }
}

getPieces() {
    List<Piece> pieces = [];
    draw();

    for(int i = 0; i < positions.length; i++) {
        Piece p = Piece(
            posX: positions[i].dx.toInt(),
            posY: positions[i].dy.toInt(),
            size: step,
            color: Colors.red,
        );

        pieces.add(p); // Add this
    }

    return pieces; // Add this
}

@override
Widget build(BuildContext context) {
    ...
    return Scaffold(
      body: Container(
        color: Color(0XFFF5BB00),
        child: Stack(
          children: [],
        ),
      ),
    );
  }
}

@override
Widget build(BuildContext context) {
    ...
    return Scaffold(
      body: Container(
        color: Color(0XFFF5BB00),
        child: Stack(
          children: getPieces(),
        ),
      ),
    );
  }
}