public int Calculate(PlayerRolls playerRolls)
{
int score = 0;
var frameIndex = 0;
var rolls = playerRolls.Safe;
for (var frame = 0; frame < 10; frame++)
{
if (IsStrike(rolls, frameIndex))
{
score += 10 + rolls[frameIndex + 1] + rolls[frameIndex + 2];
frameIndex++;
}
else if (IsSpare(rolls, frameIndex))
{
score += 10 + rolls.Safe[frameIndex + 2];
frameIndex += 2;
}
else
{
score += rolls[frameIndex] + rolls[frameIndex + 1];
frameIndex += 2;
}
}
return(score);
}
public bool HasFinishedFrame(int frame, PlayerRolls playerRolls)
{
var frameIndex = FrameIndex(playerRolls, frame);
if (_scoringStrategy.IsStrike(playerRolls, frameIndex))
{
frameIndex++;
if (frame == MaxFramesCount)
{
frameIndex += 2;
}
}
else if (_scoringStrategy.IsSpare(playerRolls, frameIndex))
{
frameIndex += 2;
if (frame == MaxFramesCount)
{
frameIndex++;
}
}
else
{
frameIndex += 2;
}
var playerFinished = playerRolls.Count >= frameIndex;
return(playerFinished);
}
private int FrameIndex(PlayerRolls playerRolls, int frame)
{
int frameIndex = 0;
while (frame-- > 0)
{
if (_scoringStrategy.IsStrike(playerRolls, frameIndex))
{
frameIndex++;
}
else
{
frameIndex += 2;
}
}
return(frameIndex);
}
public bool IsSpare(PlayerRolls playerRolls, int frameIndex)
{
return(playerRolls.Safe[frameIndex] + playerRolls.Safe[frameIndex + 1] == 10);
}
public bool IsStrike(PlayerRolls playerRolls, int frameIndex)
{
return(playerRolls.Safe[frameIndex] == 10);
}