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vortis
Novice
Joined: 15 Jul 2010
Posts: 39
Location: USA
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 Posted: Fri Mar 16, 2012 2:54 pm
Searching a variable for specific words
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Text:
Obvious exits : north, east, south and west.
Pattern:
Obvious exits : %1
This makes %1 = "north, east, south and west."
Trigger:
ExitList = %1
This makes @ExitList = "north, east, south and west."
I want to check @Exitlist to see if 'south' is in the list, and if it is, set another variable @WalkSafe to "Yes"
What is the best way to do this? |
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Shezmu
Wanderer
Joined: 23 Apr 2010
Posts: 53
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Posted: Fri Mar 16, 2012 4:33 pm
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This should work. Just going from memory, though.
#if %ismember("south",@Exitlist) {#var WalkSafe "Yes"} {} |
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charneus
Wizard
Joined: 19 Jun 2005
Posts: 1876
Location: California
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Posted: Fri Mar 16, 2012 6:04 pm
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| Shezmu wrote: |
This should work. Just going from memory, though.
#if %ismember("south",@Exitlist) {#var WalkSafe "Yes"} {} |
That'd work if it were an item list. "north, south, east, west" is not an item list, though.
You can do it one of two ways.
1. Change ExitList = %1 to ExitList = %subchar(%1,",. ","|") and follow Shezmu's example.
2. Change %ismember in Shezmu's example to %pos. |
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Shezmu
Wanderer
Joined: 23 Apr 2010
Posts: 53
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Posted: Fri Mar 16, 2012 6:20 pm
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Once again, Charneus is much better at this than I am. ;)
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Rahab
Wizard
Joined: 22 Mar 2007
Posts: 2320
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Posted: Fri Mar 16, 2012 8:23 pm
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Two notes:
With Charneus' first option, you will also end up with "and" in your ExitList. If you aren't doing anything else with ExitList, that's fine, but if you decide later to use it for other stuff, you should get rid of "and". You will also end up with several empty values in ExitList which could cause problems if you use it for anything else. There are several ways of avoiding this problem if you think it will use ExitList for anything else.
With Charneus' second option, you have to be careful if you can have exits to northeast, southeast, etc. It looks like this is probably not the case here, but if there are such exits, using %pos() can match the wrong things. |
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charneus
Wizard
Joined: 19 Jun 2005
Posts: 1876
Location: California
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Posted: Fri Mar 16, 2012 8:33 pm
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Whoops, good catch, Rahab. I missed the 'and' in the previous post. Time to amend things!
This might be a better solution, in fact.
| Code: |
ExitList = %null
$Exits = %replace(%1," and ",", ")
#LOOP %numwords($Exits,", ") {#ADDITEM ExitList %word($Exits,%i,", ")} |
That way, you'll clear out the exit list upon seeing the trigger line, then you'll add the individual exits properly.
There may be a slightly better way to do this, but I can't think of it at this moment. |
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