More cleanups of the tests and fixes to the room and door positioning.

src/algos/rand.hpp

@@ -27,5 +27,15 @@ namespace Random {
     return rand(GENERATOR);
   }
 
+  auto abs(auto i, auto j) {
+    if(i < j) {
+      return Random::uniform(i, j);
+    } else if(j < i) {
+      return Random::uniform(j, i);
+    } else {
+      return i;
+    }
+  }
+
   std::chrono::milliseconds milliseconds(int from, int to);
 }