Count and sum the scores of a bowling game for one player (in JavaScript).
A bowling game consists of 10 frames in which the player tries to knock down the 10 pins. In every frame the player can roll 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.
As a bowler
So that I can keep track of my score during a bowling game
I want to be able to log my scores on a scoresheet
As a bowler
So that I can focus on knocking down all pins within each frame
I want to be given the remaining number of pins following each throw
As a bowler
So that I can keep track of my remaining rolls during a bowling game
I want the scoresheet to display all 10 frames and pins knocked down with each roll
As a bowler
So that my scores are displayed correctly for each frame
I want the final score for each frame to be displayed once the bonus rolls following spares and strikes have been thrown
As a bowler
So that I can play several games
I want to have the option of starting a new game once I have finished a game
Create a nice interactive animated interface with jQuery.
The player has a strike if he knocks 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 would be the next frame, unless the player rolls another strike.
The player has a spare if the knocks down all 10 pins with the two rolls of a frame. The bonus for that frame is the number of pins knocked down by the next roll (first roll 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).
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 300 points.
In the image below you can find some score examples.
More about ten pin bowling here: http://en.wikipedia.org/wiki/Ten-pin_bowling