I’m working on a java question and need an explanation to help me understand better.
To pass the time during long winters, the ancient Nordic people would play the two-player game of Björksnäs. In this assignment, you’ll implement the game, but play will be against the computer.
During each round, players choose a move, which may be either Gödishus, Derflürg, Kullen, Koppang, or Songesand. The rules are:
- Songesand beats Kullen, Gödishus
- Kullen beats Derflürg, Koppang
- Derflürg beats Songesand, Gödishus
- Gödishus beats Koppang, Kullen
- Koppang beats Songesand, Derflürg
Your program should behave as follows:
- The rules should be printed to the screen
- The user is asked if they’d like to play a round
- if they choose ‘y’, a round is played
- if they choose ‘n’, the program ends
- Until the user has chosen to quit, another round is played.
- In a round of play:
- The user is asked to enter a move, which may be either Gödishus, Derflürg, Kullen, Koppang, or Songesand. The program should continue to prompt the user until a valid move is entered.
- The computer makes a move at random. (Hint: remember how we generated random numbers in class.)
- The program prints the computer’s move, the user’s move, and who is the winner of this round.
- The user is asked if they’d like to continue.
- When the user has decided to quit the game, the program prints the number of:
- rounds played
- times the user won
- times the computer won
An important skill in programming is learning how to break up a big job into smaller tasks.
- Make an outline. Make sure that your outline makes sense. Test it out with real input using pencil and paper. Do this before you start writing code.
- Turn some of the individual steps of your outline into functions. Some obvious choices might be a function which generates the computer’s move at random. Another would be a function which is passed two moves and returns the winner. The goal should be that the functions make your code as readable as your English-language outline. You don’t need to implement all of the functions at first. Just write placeholders (we call these stubs) first and fill them in later.
- Implement and test your stub functions.
Also remember to test things as you go. It’s easier to find a mistake in 5 lines of code than it is to find a mistake in 500 lines of code.