added: cmdline args handling

src/log.h

@@ -1,6 +1,26 @@
 #ifndef __LOG_H__
 #define __LOG_H__
+#include <fstream>
+#include <string>
+#include <memory>
+#include "constants.h"
+#include "characters.h"
+#include "objects.h"
 
-class logger;
+class logger final {
+private:
+        std::ofstream out;
+public:
+        logger(std::ofstream &&new_out);
+
+        // called once every turn
+        void render();
+        void print_char(const position &pos, const char ch);
+        void print_str(const position &pos, const std::string &str);
+        void print_turn(const unsigned turn);
+        void print_player(std::unique_ptr<character> &player);
+        void print_chlist(const character_list &chlist);
+        void print_potions(const potion_list &potions);
+};
 
 #endif