sarahjonipower / bowling-challenge-ruby

This programme will help you calculate your bowling scorecard!

To play a game run: Game.new.play_a_game

Notes: The programme seems to work fine, my problem was all in the testing. I was really struggling to work out how to test a couple of my methods. I found it really hard to test as I went with this challenge, as I ended up writing most of the code out while I was trying to figure out how it would all work together, but then that left me with a lot of un-tested code, which was obvioulsy not ideal. A couple of methods are also a bit long and could definitely do with some refactoring.

Focus for this challenge

The focus for this challenge is to write high-quality code.

In order to do this, you may pay particular attention to the following:

• Using diagramming to plan your approach to the challenge
• TDD your code
• Focus on testing behaviour rather than state
• Commit often, with good commit messages
• Single Responsibility Principle and encapsulation
• Clear and readable code

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