finished the bulk of game

src/potions/boost_def.cc

@@ -0,0 +1,31 @@
+#include "boost_def.h"
+
+#include <algorithm>
+#include "../constants.h"
+
+// TODO: move into class def as static constants
+const int BOOST_DEF = 5;
+const int BOOST_DEF_DROW = 7;
+
+boost_def::boost_def(const position &pos):
+        potion{potion_type::boost_def, -1, pos} {}
+
+void boost_def::apply(const enum race &race, int &HP, int &ATK, int &DEF,
+                      fraction &base_hit_rate) {
+        if (remaining_duration > 0) {
+                if (race == rdrow)
+                        DEF += BOOST_DEF_DROW;
+                else
+                        DEF += BOOST_DEF;
+
+                --remaining_duration;
+        }
+}
+
+int boost_def::get_priority() const {
+        return CALC_ADD_BASE;
+}
+
+const char *boost_def::get_name() const {
+        return "BD";
+}