Tutorial: hunger and eating food

Reset hunger when exiting the tutorial.
Add an optional second parameter to lua pline, forcing a more-prompt.

dat/nhlib.lua

@@ -270,6 +270,18 @@ local tutorial_events = {
          tutorial_whitelist_commands["zap"] = true;
          end,
    },
+   {
+      func = function()
+         if (u.uhunger < 148) then
+            tutorial_whitelist_commands["eat"] = true;
+            local o = obj.new("blessed food ration");
+            o:placeobj(u.ux, u.uy);
+            nh.pline("Looks like you're getting hungry.  You'll starve to death, unless you eat something.", true);
+            nh.pline("Comestibles are eaten with '" .. nh.eckey("eat") .. "'", true);
+            return true;
+         end
+      end
+   },
 };
 
 function tutorial_turn()

doc/lua.adoc

@@ -331,10 +331,12 @@ Example:
 === pline
 
 Show the text in the message area.
+Second parameter is an optional boolean; if true, force a `--more--` prompt.
 
 Example:
 
  nh.pline("Message text to show.");
+ nh.pline("Waiting for user.", true);
 
 
 === pushkey

src/nhlua.c

@@ -603,14 +603,17 @@ nhl_impossible(lua_State *L)
 }
 
 /* pline("It hits!") */
+/* pline("It hits!", true) */
 static int
 nhl_pline(lua_State *L)
 {
     int argc = lua_gettop(L);
 
-    if (argc == 1)
+    if (argc == 1 || argc == 2) {
         pline("%s", luaL_checkstring(L, 1));
-    else
+        if (lua_toboolean(L, 2))
+            display_nhwindow(WIN_MESSAGE, TRUE); /* --more-- */
+    } else
         nhl_error(L, "Wrong args");
 
     return 0;
@@ -1593,6 +1596,7 @@ nhl_gamestate(lua_State *L)
             if (wornmask)
                 setworn(otmp, wornmask);
         }
+        init_uhunger();
         stored = FALSE;
     } else {
         /* store game state */