private BallContext GetBallContext(char ball, BallContext previousBall)
{
var result = new BallContext();
result.Raw = ball;
result.Frame = previousBall == null
? 1
: (previousBall.LastBallInFrame ? previousBall.Frame + 1 : previousBall.Frame);
var ballsAllowedThisFrame = result.Frame >= 10 ? 3 : 2;
var ballsSoFarThisFrame = previousBall == null
? 0
: (previousBall.LastBallInFrame ? 0 : 1);
switch (ball)
{
case '-':
result.Value = 0;
result.LastBallInFrame = ballsSoFarThisFrame > 0;
break;
case '/':
//can't get a spare on the first ball, so who cares if previousBall could be null.
result.Value = 10 - previousBall.Value;
result.IncludeNextThrows = (result.Frame < 10) ? 1 : 0;
result.LastBallInFrame = true;
break;
case 'X':
result.Value = 10;
result.IncludeNextThrows = (result.Frame < 10) ? 2 : 0;
result.LastBallInFrame = (result.Frame < 10);
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
result.Value = int.Parse(ball.ToString());
result.LastBallInFrame = ballsSoFarThisFrame > 0;
break;
}
return(result);
}
private GameContext GetGameContext(string throws)
{
var context = new GameContext();
var balls = new List <BallContext>();
BallContext previousBall = null;
var frame = 0;
var ballInFrame = 0;
for (int i = 0; i < throws.Length; i++)
{
var ball = GetBallContext(throws[i], previousBall);
balls.Add(ball);
previousBall = ball;
}
context.Balls = balls;
return(context);
}