- Moved calc_dmg to characters.h

- put vampire into new source files

src/vampire.h

@@ -0,0 +1,17 @@
+#ifndef __VAMPIRE_H__
+#define __VAMPIRE_H__
+#include "characters.h"
+
+
+class vampire final: public character {
+public:
+        vampire(const position_list &available_positions); // spawn at a random place
+        virtual result attack(const direction dir,
+                              const character_list &chlist) override;
+        virtual result get_hit(const enum race &race, const int atk,
+                               const float hit_rate) override;
+private:
+        const int GAIN_HP = 5;
+};
+
+#endif