Split yarn, handle inactive options

res/text/intro.yarn

@@ -10,35 +10,3 @@ You: What happened to the updates from mission control?
 You: Let's have another look around...
 <<room quarters>>
 ===
-title: Room:quarters
----
-<<declare $roll = 0>>
-// You: It's the crew quarters. 
-// You: Well, it will be. Set-up hasn't started yet.
-// You: That was meant to be one of my first jobs after defrost...
-// You: ...but it doesn't exactly seem like a priority now.
-You: Maybe there's something useful here?
--> Search the lockers [perception]
-  <<set $roll to dice(6)>>
-  <<if $roll > 2>>
-  You: Aha! A small piece of paper with the **hangar access code**.
-  <<room hangar>>
-  <<else>>
-  You: Just some dust bunnies. Guess they stowed away from Earth.
-  <<endif>>
--> Set up a sleeping mat [ingenuity]
-  <<set $roll to dice(6)>>
-  <<if $roll > 2>>
-  You: Nice, at least I have somewhere to crash now.
-  <<else>>
-  You: Hmm, I was never good at this camping stuff. Maybe I can find somewhere else to rest.
-  <<endif>>
-===
-title: Room:hangar
----
-You: The **hangar** seems eerily deserted
-===
-title: Room not open
----
-You: Hmm, that part of the ship is still inaccessible. I wonder how to get in?
-===

res/text/rooms.yarn

@@ -0,0 +1,34 @@
+title: Room:quarters
+---
+<<declare $roll = 0>>
+<<declare $hangarKeyFound = false>>
+// You: It's the crew quarters. 
+// You: Well, it will be. Set-up hasn't started yet.
+// You: That was meant to be one of my first jobs after defrost...
+// You: ...but it doesn't exactly seem like a priority now.
+You: Maybe there's something useful here?
+-> Search the lockers [perception] <<if not $hangarKeyFound>>
+	<<set $roll to dice(6)>>
+	<<if $roll > 2>>
+		You: Aha! A small piece of paper with the **hangar access code**.
+		<<room hangar>>
+		<<set $hangarKeyFound to true>>
+	<<else>>
+		You: Just some dust bunnies. Guess they stowed away from Earth.
+	<<endif>>
+-> Set up a sleeping mat [ingenuity]
+  <<set $roll to dice(6)>>
+  <<if $roll > 2>>
+  You: Nice, at least I have somewhere to crash now.
+  <<else>>
+  You: Hmm, I was never good at this camping stuff. Maybe I can find somewhere else to rest.
+  <<endif>>
+===
+title: Room:hangar
+---
+You: The **hangar** seems eerily deserted
+===
+title: Room not open
+---
+You: Hmm, that part of the ship is still inaccessible. I wonder how to get in?
+===