Typing Challenge Summary: Create the Typing Challenge program. The solution file
ID: 3754051 • Letter: T
Question
Typing Challenge Summary: Create the Typing Challenge program. The solution file should be named TypingChallenge_ExerciseE.rb. Use the instructions on page 144 of the textbook. Run your program until it works and the output looks nice.
Reinforcement Exercises The following exercises are designed to further your understanding of Ruby programming by challenging you to make improvements to the chapter’s game project, the Ruby Typing Challenge game.
Make the game more difficult by increasing the number of typing challenges from five to 10.
Modify the program so that it takes six correctly typed sentences to pass. To implement this challenge, copy the last of the five state- ments that generate the game’s typing challenges and use it to add five additional challenges.
You also need to modify the display_instructions method so that it tells the player there are 10 sentences instead of five.
And you need to modify the Test class’s determine_grade method so that it requires the player to type at least six sentences correctly in order to pass the challenge.
Rather than using a pass/fail grading system, modify the game to assign grades of A, B, C, D, and F to the player using a 10-point grading scale.
Make sure you use the case statement when implementing your solution. To implement this challenge, modify the Test class’s determine_grade method using a case code block.
Assign an A for nine or 10 correctly typed sentences, a B for eight, a C for seven, a D for six, and an F for five or fewer. 3. Add an explanation of how the test is graded.
To implement this challenge, modify the test class’s display_instructions method and rewrite the text accordingly.
Provide immediate feedback for each mistyped sentence. To do so, modify the Test class’s present_test method so that it informs the player a mistake has been made, then display the challenge sentence followed by the player’s sentence so the player can determine where the error lies.
# Define custom classes ---------------------------------------------------
#Define a class representing the console window
class Screen
def cls #Define a method that clears the display area
puts (" " * 25) #Scroll the screen 25 times
puts "" #Make a little noise to get the player's attention
end
def pause #Define a method that pauses the display area
STDIN.gets #Execute the STDIN class's gets method to pause script
#execution until the player presses the Enter key
end
end
#Define a class representing the typing test
class Test
#This method displays the 8-ball greeting message
def display_greeting
Console_Screen.cls #Clear the display area
#Display a welcome screen
print " Welcome to the Ruby Typing Challenge game!" +
" Press Enter to " +
"continue. : "
Console_Screen.pause #Pause the game
end
#Define a method to be used to present test instructions
def display_instructions
Console_Screen.cls #Clear the display area
puts " Instructions: " #Display a heading
#Display the game's instructions
puts %Q{ This test consists of a series of 5 typing challenges.
The challenge sentences are presented one at a time. To respond
correctly, you must retype each sentence exactly as shown and press
the Enter key. Your grade will be displayed at the end of the test.
Press Enter to continue. }
Console_Screen.pause #Pause the game
end
#Define a method to be used to present typing challenges
def present_test(challenge)
Console_Screen.cls #Clear the display area
print challenge + " : " #Display the challenge sentence
result = STDIN.gets #Collect the player's input
result.chop! #Remove the end of line marker
#Analyze the player input and see if it is correct
if challenge == result then
#Keep track of the number of correctly retyped challenge sentences
$noRight += 1
Console_Screen.cls #Clear the display area
#Keep the player informed
print "Correct! Press Enter to continue."
Console_Screen.pause #Pause the game
else
Console_Screen.cls #Clear the display area
#Keep the player informed
print "Incorrect! Press Enter to continue."
Console_Screen.pause #Clear the game
end
end
#Define a method to be used to display test results
def determine_grade
Console_Screen.cls #Clear the display area
#To pass the test the player must correctly retype 3 sentences
if $noRight >= 3 then
#Inform the player of the good news
print "You retyped " + $noRight.to_s + " sentence(s) correctly. "
puts "You have passed the typing test! Press Enter to continue."
else #The player has failed the test
#Inform the player of the bad news
print "You retyped " + $noRight.to_s + " sentence(s) correctly. "
puts "You have failed the typing test! Press Enter to continue."
end
end
end
# Main Script Logic -------------------------------------------------------
#Initialize global variable that will be used to keep track of the number
#of correctly retyped sentences
$noRight = 0
Console_Screen = Screen.new #Instantiate a new Screen object
Typing_Test = Test.new #Instantiate a new Test object
#Execute the Test object's display_greeting method
Typing_Test.display_greeting
#Execute the Screen object's cls method in order to clear the screen
Console_Screen.cls
#Prompt the player for permission to begin the test
print "Would you like to test your typing skills? (y/n) : "
answer = STDIN.gets #Collect the player's response
answer.chop! #Remove any extra characters appended to the string
#Loop until the player enters y or n and do not accept any other input.
until answer == "y" || answer == "n"
Console_Screen.cls #Clear the display area
#Prompt the player for permission to begin the test
print "Would you like to test your typing skills? (y/n) : "
answer = STDIN.gets #Collect the player's response
answer.chop! #Remove any extra characters appended to the string
end
#Analyze the player's response
if answer == "n" #See if the player elected not to play
Console_Screen.cls #Clear the display area
#Invite the player to return and play again
puts "Okay, perhaps another time. "
else #The player wants to take the test
#Execute the Test object's display_instructions method
Typing_Test.display_instructions
#Display typing challenges and grade each answer by calling on the
#Test object's present_test method
Typing_Test.present_test "In the end there can be only one."
Typing_Test.present_test "Once a great plague swept across the land."
Typing_Test.present_test "Welcome to Ruby Principles of Ruby Programming"
Typing_Test.present_test "There are very few problems in the world " +
"that enough M&Ms cannot fix."
Typing_Test.present_test "Perhaps today is a good day to die. Fight " +
"beside me and let us die together."
#Notify the player of the results by executing the Test object's
#display_instructions method
Typing_Test.determine_grade
Console_Screen.pause #Pause the game
Console_Screen.cls #Clear the display area
#Thank the player for taking the typing test
puts "Thank you for taking the Ruby Typing Challenge. "
end
Explanation / Answer
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