added extra potions

src/potions/bezerk_brew.cc

@@ -0,0 +1,24 @@
+#include "bezerk_brew.h"
+
+#include <algorithm>
+#include "../constants.h"
+
+bezerk_brew::bezerk_brew(const position &pos):
+        potion{potion_type::bezerk_brew, DURATION, pos} {}
+
+void bezerk_brew::apply(const enum race &race, int &HP, int &ATK,
+                        int &DEF, fraction &base_hit_rate) {
+        if (remaining_duration != 0) {
+                ATK *= ATK_MUL * (race == rdrow ? DROW_POTION_MUL : 1);
+                DEF *= DEF_MUL * (race == rdrow ? DROW_POTION_MUL : 1);
+                --remaining_duration;
+        }
+}
+
+int bezerk_brew::get_priority() const {
+        return CALC_MID;
+}
+
+const char *bezerk_brew::get_name() const {
+        return "BB";
+}