How to Create a 2D Snake Game in Flutter
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You are now able to control a moving Snake. It also grows as it eats the food but one thing that you should also do is prevent the Snake from moving off the screen.
@override
Widget build(BuildContext context) {
...
return Scaffold(
body: Container(
color: Color(0XFFF5BB00),
child: Stack(
children: [
getPlayAreaBorder(),
...
],
),
),
);
}
bool detectCollision(Offset position) {
}
bool detectCollision(Offset position) {
if (position.dx >= upperBoundX && direction == Direction.right) {
return true;
} else if (position.dx <= lowerBoundX && direction == Direction.left) {
return true;
} else if (position.dy >= upperBoundY && direction == Direction.down) {
return true;
} else if (position.dy <= lowerBoundY && direction == Direction.up) {
return true;
}
return false;
}
Future<Offset> getNextPosition(Offset position) async {
Offset nextPosition;
// Add this
if (detectCollision(position) == true) {
if (timer != null && timer.isActive) timer.cancel();
return position;
}
...
return nextPosition;
}