Vary the legacy start-of-game text based on role

This provides a little extra flavor to the legacy text without writing a
completely new message for every role (unnecessary since the Marduk vs
Moloch backstory is always the same).

I did end up coming up with a different message for each role; initially
I had only about 8 planned. Regardless, any new role will still fall
back on "written in the Book" until a message is added.

I initially implemented this with a new '%W' quest pager format string,
but then got it to work purely in Lua instead, which is good because %W
wouldn't have been used anywhere else.

Closes #147

dat/quest.lua

@@ -24,7 +24,41 @@
 -- pline, unless the text contains newlines, or is too long to fit a message buffer,
 -- then will be shown as a text window instead.
 
-
+-- Return a role-specific variant on the middle part of the first sentence of
+-- the legacy text, "It is written in the Book of %d" (the first and last parts
+-- remain constant so this doesn't handle them)
+function written_in_Book()
+   local role = u.role;
+   if role == 'Archeologist' then
+      return 'written in the Ancient Scrolls'
+   elseif role == 'Barbarian' then
+      return 'etched on the Tablets'
+   elseif role == 'Caveman' then
+      return 'painted in the Sacred Caves'
+   elseif role == 'Healer' then
+      return 'taught in the School'
+   elseif role == 'Knight' then
+      return 'told in the Legends'
+   elseif role == 'Monk' then
+      return 'chanted in the Rites'
+   elseif role == 'Priest' then
+      return 'catechized in the Temples'
+   elseif role == 'Ranger' then
+      return 'remembered in the Grove'
+   elseif role == 'Rogue' then
+      return 'whispered in the Secret History'
+   elseif role == 'Samurai' then
+      return 'illustrated in the Emakimono'
+   elseif role == 'Tourist' then
+      return 'referenced in the Guidebooks'
+   elseif role == 'Valkyrie' then
+      return 'sung in the Sagas'
+   elseif role == 'Wizard' then
+      return 'inscribed in the Tomes'
+   end
+   -- if a role doesn't have a string defined, fall back on the standard message
+   return 'written in the Book'
+end
 
 questtext = {
    -- If a role doesn't have a specific message, try a fallback
@@ -174,7 +208,9 @@ Go now!  You are banished from this place.]],
       legacy = {
          synopsis = "[%dC has chosen you to recover the Amulet of Yendor for %dI.]",
          output = "menu",
-         text = [[It is written in the Book of %d:
+         -- used to be hardcoded "written in the Book", now replaced by
+         -- role-specific strings
+         text = "It is "..written_in_Book()..[[ of %d:
 
     After the Creation, the cruel god Moloch rebelled
     against the authority of Marduk the Creator.

doc/xnh-changelog-9.0.md

@@ -72,6 +72,8 @@ changes:
   instead gives instructions on how to explicitly request that and prompts
   again. (However, escaping or failing to enter a valid form 5 times still
   causes a random polymorph.)
+- The legacy text at the start of the game uses different role-based opening
+  lines that replace the standard "It is written in the Book of [deity]:"
 
 ### Architectural changes