From 2678fd93f0f6340e4eabf8475f5bc0d32d2751b5 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Wed, 3 Jan 2018 21:49:31 +0100
Subject: [PATCH] added an unlock rule for the Ruins

---
 help.cpp     | 3 +++
 landlock.cpp | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/help.cpp b/help.cpp
index e10a454f..edb6db47 100644
--- a/help.cpp
+++ b/help.cpp
@@ -545,6 +545,9 @@ string generateHelpForLand(eLand l) {
     KILLREQ(moAirElemental, laWhirlwind);
     }
   
+  if(l == laInvincible)
+    KILLREQ(moSkeleton, laPalace);
+    
   if(l == laTrollheim) {
     KILLREQ(moTroll, laCaves);
     KILLREQ(moFjordTroll, laLivefjord);
diff --git a/landlock.cpp b/landlock.cpp
index b4cf300c..7d39ea00 100644
--- a/landlock.cpp
+++ b/landlock.cpp
@@ -211,6 +211,10 @@ int isNative(eLand l, eMonster m) {
     
     case laSwitch:
       return m == moSwitch1 || m == moSwitch2 ? 2 : 0;
+    
+    case laInvincible:
+      return among(m, moPair, moHexDemon, moAltDemon, moMonk, moCrusher) ? 2 :
+        m == moSkeleton ? 1 : 0;
     }
   return false;
   }
@@ -542,6 +546,9 @@ bool landUnlocked(eLand l) {
       
     case laSwitch:
       return gold() >= R90;
+    
+    case laInvincible:
+      return kills[moSkeleton];
     }
   return false;
   }
@@ -801,6 +808,7 @@ eLand getNewLand(eLand old) {
     tab[cnt++] = laPalace;
     if(old == laDragon && items[itElixir] >= U10) LIKELY tab[cnt++] = laReptile;
     if(kills[moVizier]) tab[cnt++] = laEmerald;
+    if(kills[moSkeleton]) tab[cnt++] = laInvincible;
     if(items[itFeather] >= U10) {
       tab[cnt++] = laZebra;
       if(old == laMotion || old == laHunting) LIKELY2 tab[cnt++] = laZebra;