Bowling Challenge

Instructions

To get a local copy:

git clone https://github.com/sblausten/bowling-challenge.git
cd bowling-challenge

To run tests

npm i
open SpecRunner.html

If open command does not work on your machine, just copy the full path of the SpecRunner file into your browser's address bar after.

User stories

• I want to start a game of bowling

• I want to roll

• I want to have two rolls per frame

• I want to end a frame when I score 10 in first roll

• I want to keep track of my score for each roll including skipped ones

• I want to keep track of my score for each frame including bonuses

• I want to add this frame to the last frame if it was a strike

• I want to add the first roll to the last frame if it was a spare

• I want the game to end after 10 frames

• I want the game to only continue past 10 frames when the frame is a strike

• I want the game to end after 13 frames if the last four frames are strikes.

The Task

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.

Optional Extras

In any order you like:

• Create a nice interactive animated interface with jQuery.
• Set up Travis CI to run your tests.
• Add ESLint to your codebase and make your code conform.

You might even want to start with ESLint early on in your work — to help you learn Javascript conventions as you go along.

Bowling — how does it work?

Strikes

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.

Spares

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).

10th 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).

Perfect Game

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