This repository is my take on implementing a scorecard for a game of bowling. Bowling may be simple to play, but its scoring system is relatively complex (see below). This repository is my implementation of scoring a game of bowling, where TDD, OOP and the linked list data structure have contributed to clean code, despite the multitude of edge cases in the problem.
A bowling game consists of 10 frames in which the player tries to knock down 10 pins. In every frame the player can throw one or two times. The actual number depends on strikes and spares. The score of a frame is the number of knocked down pins plus bonuses for strikes and spares. After every frame the 10 pins are reset.
The player has a strike if they knock down all 10 pins with the first roll in a frame. The frame ends immediately (since there are no pins left for a second roll). The bonus for that frame is the number of pins knocked down by the next two rolls. That is the next frame, except if the player rolls a strike again.
The player has a spare if they knock down all 10 pins with the two roles of a frame. The bonus for that frame is the number of pins knocked down by the next roll (first role of next frame).
If the player rolls a strike or spare in the 10th frame they can roll the additional balls for the bonus. But they can never roll more than 3 balls in the 10th frame. The additional rolls only count for the bonus- not for the regular frame count.
10, 10, 10 in the 10th frame gives 30 points (10 points for the regular first strike and 20 points for the bonus) 1, 9, 10 in the 10th frame gives 20 points (10 points for the regular spare and 10 points for the bonus) Gutter Game
A Gutter Game is when the player never hits a pin (20 zero scores).
A Perfect Game is when the player rolls 12 strikes (10 regular strikes and 2 strikes for the bonus in the 10th frame). The Perfect Game scores to 300 points.