reduce extra includes

src/world/Weather.cpp

@@ -0,0 +1,27 @@
+#include "Weather.hpp"
+
+#include "data/dv.hpp"
+
+dv::value Weather::serialize() const {
+    return dv::object({
+        {"a", a.serialize()},
+        {"b", b.serialize()},
+        {"name-a", nameA},
+        {"name-b", nameB},
+        {"t", t},
+        {"speed", speed},
+    });
+}
+
+void Weather::deserialize(const dv::value& src) {
+    if (src.has("a")) {
+        a.deserialize(src["a"]);
+    }
+    if (src.has("b")) {
+        b.deserialize(src["b"]);
+    }
+    src.at("name-a").get(nameA);
+    src.at("name-b").get(nameB);
+    src.at("t").get(t);
+    src.at("speed").get(speed);
+}

src/world/Weather.hpp

@@ -45,23 +45,6 @@ struct Weather : Serializable {
         return b.thunderRate * t + a.thunderRate * (1.0f - t);
     }
 
-    dv::value serialize() const override {
-        return dv::object({
-            {"a", a.serialize()},
-            {"b", b.serialize()},
-            {"name-a", nameA},
-            {"name-b", nameB},
-            {"t", t},
-            {"speed", speed},
-        });
-    }
-
-    void deserialize(const dv::value& src) override {
-        a.deserializeOpt(src.at("a"));
-        b.deserializeOpt(src.at("b"));
-        src.at("name-a").get(nameA);
-        src.at("name-b").get(nameB);
-        src.at("t").get(t);
-        src.at("speed").get(speed);
-    }
+    dv::value serialize() const override;
+    void deserialize(const dv::value& src) override;
 };