IF THEN statements in Harlowe

Comments

• TheMadExile

  January 2016

  The square brackets (known in Harlowe as a hook) contain the "code" to execute if the condition is met, yes.
  
  Your problem is that your second (if:) should be an (elseif:) instead. For example:

  (if: $money > $resp) [You are getting more respectable (set: $resp to $resp + $money)]
  (elseif: $money < $resp) [You are getting less respectable (set: $resp to $resp - $money)]
  (else:) [Your respectability is the same]
  

  
  Also, when modifying a variable's current value, you may replace instances of the variable after the first with the keyword it. For example:

  <!-- These (set:) macros. -->
  (set: $resp to $resp + $money)
  (set: $resp to $resp - $money)
  
  <!-- May also be written like so. -->
  (set: $resp to it + $money)
  (set: $resp to it - $money)
  

  You don't have to do that, but it does save some typing.
• greyelf

  January 2016 edited January 2016

  opps: it appears TheMadExile types faster than I do. lol
  
  Please use the C button in the comment area's toolbar to wrap your code examples in code tags.
  

  (if: $money = $resp)
  (if $money is $resp)

  There are a number of errors/issues with the above:
  
  a. You are missing the requires colon after the macro name in the second line, so that line will output the values of the $money and $resp variables.
  
  b. A single equals sign (=) means assignment in Javascript (and Harlowe script), you use either double (==) or triple (===) equal signs when doing a comparison.
  
  c. Harlowe does not support assigning values to variables within the conditional part of the (if:) macro.
  
  d. Harlowe does not support using double (==) or triple (===) equal signs when doing a comparison in an (if:) macro, it uses the is keyword operator.
  
  e. Based on all the above the two lines are not equivalent.
  
  There are a number of errors/issue within your test variables passage:

  Repectability: $resp
  
  Money: $money
  
  (if: $money > $resp) [You are getting more respectable (set: $resp to $resp + $money)]
  (if: $money < $resp) [You are getting less respectable (set: $resp to $resp - $money)]
  (else: ) [Your respectability is the same]
  
  Your new Respectability is $resp

  1. You have an Invalid space character between your (if:) macro's and their assocated hooks [...]
  
  2. Because the second (if:) macro is not an (else-if:) the two (if:)'s are considered mutually exclusive, and because you are changing the value of $resp in the first (if:) the condition in both (if:) macros end up being true.
  
  a. $money (40) is greater than $resp (20) so $rest is changed to equal 60 (20+40)
  b. $money (40) is less than $resp (60) so $rest is changed to equal 20 (60-40)
  
  3. The (else:) macro is only associated with the second (if:) macro.
  
  4. (not an error as such) You have an unnecessary space character in the (else: ) macro.
  
  Your example should look something like the following:

  Repectability: $resp
  
  Money: $money
  
  (if: $money > $resp)[You are getting more respectable (set: $resp to $resp + $money)]
  (else-if: $money < $resp)[You are getting less respectable (set: $resp to $resp - $money)]
  (else:)[Your respectability is the same]
  
  Your new Respectability is $resp
  
• carldjcross

  January 2016

  Thanks both of you.
  
  I clearly have a lot to learn!
  
  Back to experimenting and feeling my way through the docs I guess.
  
  Thanks again.
• TheMadExile

  January 2016

  Ah, I missed the spurious spaces between the macros and their hooks. Good catch, greyelf. I should have been paying more attention.