Programming Ruby Slot Machine Game - ruby

Question

I'm trying to make a slot machine game in Ruby and this is as far as I've gotten. It still won't run and says there is an error on the last line, which I do not know what is or how to fix it.
I need it to have an output similar to this:
How much total money would you like to play with today? 25
Total cash: $ 25
How much would you like to bet? 10
Cherry - Orange - Orange
You have won $ 20
Would you like to continue? (yes to continue) yes
Total cash: $ 35
How much would you like to bet?
etc…
I've already got the winnings set on there, like if you get two, you win twice your bet and if you get three, you win three times your bet.
But I get the error: 33: syntax error, unexpected $end, expecting kEND cash += cash + winnings
What is wrong with my code, and how do I fix it?
def multiplier(s1, s2, s3)
if s1 == s2 and s2 == s3:
multiplier = 3
elsif s1 == s2 or s2 == s3 or s1 == s3:
multiplier = 2
else
multiplier = 0;
return multiplier
def main()
slotImageList = ['Cherry', 'Orange', 'Plum', 'Bell', 'Melon', 'Bar']
cash = gets
puts "How much total money would you like to play with today? " +cash
while True:
puts("Total cash: $", cash)
bet = gets
puts "How much would you like to bet? " +bet
cash = (cash - bet)
slotImage1 = slotImageList.sample
slotImage2 = slotImageList.sample
slotImage3 = slotImageList.sample
puts "slotImage1", " - ", "slotImage2", " - ", "slotImage3"
winnings = bet * multiplier(slotImage1, slotImage2, slotImage3)
puts "You have won $" +winnings
cash = cash + winnings
cont = gets
puts "Would you like to continue? (yes to continue) " +cont
if cont != "yes":
puts "You have ended with $" +cash
else
puts " "
end

Answer 1

When you see the message:
unexpected $end, expecting kEND
you can translate it to, "I reached the end-of-file ("$end"), but I did not expect it, because I was still waiting to see an end statement." It means that you forgot to type at least one paired end, and you need to go through your code and ensure that it's indented properly so that you can visually match up the statements.
Below is the result of fixing your code to be correct.; in some spots you seemed to have used indentation to close a block (like Python) instead of the correct syntax.
def multiplier(s1, s2, s3)
if s1==s2 && s2==s3
3
elsif s1==s2 || s2==s3 || s1==s3
2
else
0
end
end
def run_slots!
slotImageList = %w[Cherry Orange Plum Bell Melon Bar]
print "How much total money would you like to play with today? "
cash = gets.chomp.to_i
loop do
puts "Total cash: $#{cash}"
print "How much would you like to bet? "
bet = gets.chomp.to_i
cash -= bet
slotImage1 = slotImageList.sample
slotImage2 = slotImageList.sample
slotImage3 = slotImageList.sample
puts "#{slotImage1} - #{slotImage2} - #{slotImage3}"
winnings = bet * multiplier(slotImage1, slotImage2, slotImage3)
puts "You have won $#{winnings}"
cash += winnings
print "Would you like to continue? (yes to continue) "
unless gets.chomp=="yes"
puts "You have ended with $#{cash}"
break
end
end
end
run_slots! if __FILE__==$0
If I were to take a few more liberties with it, here's how I might write it:
class SlotGame
SLOT_COUNT = 3
TOKENS = %w[Cherry Orange Plum Bell Melon Bar]
KEEP_PLAYING_RESPONSES = %w[y yes sure ok go]
def initialize(cash=nil)
unless cash
begin
print "How much total money would you like to play with today? "
cash = gets.to_i
puts "You must have a positive bank account to play!" if cash<=0
end until cash > 0
end
#cash = cash
end
def play_forever
begin
# Using begin/end ensures one turn will be played
# before asking the player if they want to go on
play_one_turn
end while #cash>0 && keep_playing?
puts "You have ended with $#{#cash}; goodbye!"
end
def play_one_turn
puts "Total cash: $#{#cash}"
begin
print "How much would you like to bet? "
bet = gets.to_i
puts "You only have $#{#cash}!" if bet > #cash
end until bet <= #cash
#cash -= bet
results = SLOT_COUNT.times.map{ TOKENS.sample }
puts results.join(' - ')
winnings = bet * multiplier(results)
if winnings>0
#cash += winnings
puts "You just won $#{winnings}!"
else
puts "Sorry, you're not a winner."
end
end
def keep_playing?
print "Would you like to continue? "
KEEP_PLAYING_RESPONSES.include?(gets.chomp.downcase)
end
private # Don't let anyone outside run our magic formula!
def multiplier(*tokens)
case tokens.flatten.uniq.length
when 1 then 3
when 2 then 2
else 0
end
end
end
SlotGame.new.play_forever if __FILE__==$0

Answer 2

Ok!!! I think I've figured it out from your code, #Phrogz!!!
To choose randomly from the array, like a slot machine would, I used slotImageList.shuffle.first, which shuffles the array, and takes the first element of the shuffled array.
def multiplier(s1, s2, s3)
if s1==s2 && s2==s3
3
elsif s1==s2 || s2==s3 || s1==s3
2
else
0
end
end
def run_slots!
slotImageList = %w["Cherry", "Orange", "Plum", "Bell", "Melon", "Bar"]
print "How much total money would you like to play with today? "
cash = gets.chomp.to_i
loop do
puts "Total cash: $#{cash}"
print "How much would you like to bet? "
bet = gets.chomp.to_i
cash -= bet
slotImage1 = slotImageList.shuffle.first
slotImage2 = slotImageList.shuffle.first
slotImage3 = slotImageList.shuffle.first
puts "#{slotImage1} - #{slotImage2} - #{slotImage3}"
winnings = bet * multiplier(slotImage1, slotImage2, slotImage3)
puts "You have won $#{winnings}"
cash += winnings
print "Would you like to continue? (yes to continue) "
unless gets.chomp=="yes"
puts "You have ended with $#{cash}"
break
end
end
end
run_slots! if __FILE__==$0
Thank you all soooo much!!! :D