moved files out of subdirectories, added required documentation

src/viking.cc

@@ -0,0 +1,27 @@
+#include "viking.h"
+
+#include "constants.h"
+
+viking::viking(RNG *rng, const feature enabled_features, const position &pos,
+               const int gen_room_num):
+        enemy_base{rng, enabled_features, VIKING, pos, gen_room_num, "V"} {}
+
+const char *viking::get_race_name() const {
+        return "Viking";
+}
+
+long_result viking::attack(character *ch) {
+        auto res1 = ch->get_hit(this, ATK, base_hit_rate);
+
+        if (res1.res == result::DIED)
+                return res1;
+
+        auto res2 = ch->get_hit(this, ATK, base_hit_rate);
+
+        if (res1.res == MISS && res2.res == MISS)
+                return {MISS, res1.msg + res2.msg};
+        else if (res2.res == DIED)
+                return {DIED, res1.msg + res2.msg};
+        else
+                return {HIT, res1.msg + res2.msg};
+}