23 — High score: a small project

Three rounds, a score kept for each, and the best of them at the end. A loop inside a loop appears here for the first time. No quotes, no brackets, no equals sign in any of it.

#Steps

1. One round is five rolls, a point for every roll above three:

   set score to 0
   repeat 5 times
       set die to random number from 1 to 6
       if die is greater than 3
           add 1 to score
       end
   end
   show score
   

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2. To play three rounds, wrap that in another loop. A loop inside a loop is nothing new — the inner one is simply indented further:

   repeat 3 times
       set score to 0
       repeat 5 times
           set die to random number from 1 to 6
           if die is greater than 3
               add 1 to score
           end
       end
       show score
   end
   

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   set score to 0 sitting before the inner loop is what matters: each round has to start again from nothing.

3. Collect the scores. At the end of a round, put it in a list:

   set scores to an empty list
   append 3 to scores
   append 1 to scores
   show scores joined by comma
   show the biggest of scores
   

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4. To use the best in a condition, keep it in a name first:

   set scores to list of 3, 1, 2
   set best to the biggest of scores
   if best is greater than 4
       show very good
   else
       show there is room to improve
   end
   

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5. All of it:

   ask name What is your name?
   show Hello name!
   set scores to an empty list
   repeat 3 times
       set score to 0
       repeat 5 times
           set die to random number from 1 to 6
           if die is greater than 3
               add 1 to score
           end
       end
       show one round done
       show score
       append score to scores
   end
   draw a line
   show your best
   show the biggest of scores
   show scores joined by comma
   set best to the biggest of scores
   if best is greater than 4
       show very good
   else
       show there is room to improve
   end
   

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   End the program and the scores are gone. Keeping them for next time means writing them to a file, and that is 37 — Files.

#Try it yourself

Play five rounds instead of three, and show the lowest as well as the best (the smallest of scores). Every round's score is already in the list.

#What you learned

• A loop can sit inside a loop; the inner one is indented further.
• A value that must reset each round is set to nought before the inner loop.
• With the scores in a list you can ask for the biggest, the smallest or the total.
• To use a value taken from a list in a condition, keep it in a name first.
• Everything is gone when the program ends. Keeping it needs a file.