add particles.emit(...) (WIP)

src/presets/ParticlesPreset.cpp

@@ -4,17 +4,32 @@
 
 dv::value ParticlesPreset::serialize() const {
     auto root = dv::object();
+    root["texture"] = texture;
     root["collision"] = collision;
     root["lighting"] = lighting;
     root["max_distance"] = maxDistance;
+    root["spawn_interval"] = spawnInterval;
+    root["lifetime"] = lifetime;
     root["acceleration"] = dv::to_value(acceleration);
+    root["explosion"] = dv::to_value(explosion);
+    root["size"] = dv::to_value(size);
     return root;
 }
 
 void ParticlesPreset::deserialize(const dv::value& src) {
+    src.at("texture").get(texture);
     src.at("collision").get(collision);
     src.at("lighting").get(lighting);
+    src.at("max_distance").get(maxDistance);
+    src.at("spawn_interval").get(spawnInterval);
+    src.at("lifetime").get(lifetime);
     if (src.has("acceleration")) {
         dv::get_vec(src["acceleration"], acceleration);
     }
+    if (src.has("size")) {
+        dv::get_vec(src["size"], size);
+    }
+    if (src.has("explosion")) {
+        dv::get_vec(src["explosion"], explosion);
+    }
 }