moved files out of subdirectories, added required documentation

src/wound_def.cc

@@ -0,0 +1,28 @@
+#include "wound_def.h"
+
+#include <algorithm>
+#include "constants.h"
+
+wound_def::wound_def(const position &pos):
+        potion{potion_type::WOUND_DEF, -1, pos} {}
+
+void wound_def::apply(const enum race &race, int &HP, int &ATK, int &DEF,
+                      fraction &base_hit_rate) {
+        if (remaining_duration != 0) {
+                int tmp = WOUND_DEF;
+
+                if (race == DROW)
+                        tmp *= DROW_POTION_MUL;
+
+                DEF = std::max(DEF - tmp, 0);
+                --remaining_duration;
+        }
+}
+
+int wound_def::get_priority() const {
+        return CALC_BASE;
+}
+
+const char *wound_def::get_name() const {
+        return "WD";
+}