starting on round logic

src/Creature.cpp

@@ -0,0 +1,20 @@
+#include "Creature.h"
+
+bool SpeciesEatsWhenNormal(Species species) {
+  switch (species) {
+
+  case Species::Raccoon:
+  case Species::Opossum:
+    return true;
+  case Species::Fox:
+  case Species::Deer:
+    return false;
+  }
+
+  return true;
+}
+
+bool WouldEatMarshmallow(const Creature &c) {
+  bool n = SpeciesEatsWhenNormal(c.species);
+  return c.behaves_normally ? n : !n;
+}