add 'selectable' entity property

src/content/loading/EntityLoader.cpp

@@ -89,6 +89,7 @@ template<> void ContentUnitLoader<EntityDef>::loadUnit(
     root.at("skeleton-name").get(def.skeletonName);
     root.at("material").get(def.material);
     root.at("blocking").get(def.blocking);
+    root.at("selectable").get(def.selectable);
     root.at("solid").get(def.solid);
     root.at("mass").get(def.mass);
     root.at("elasticity").get(def.elasticity);

src/objects/Entities.cpp

@@ -176,7 +176,7 @@ std::optional<Entities::RaycastResult> Entities::rayCast(
 
     for (auto [entity, eid, transform, body] : view.each()) {
         if (eid.uid == settings.ignoredUid || !body.enabled ||
-            (settings.solidEntitiesOnly && !eid.def.solid)) {
+            (settings.solidEntitiesOnly && !eid.def.solid) || !eid.def.selectable) {
             continue;
         }
         if (settings.entitiesFilter) {

src/objects/EntityDef.hpp

@@ -42,6 +42,9 @@ struct EntityDef {
     /// @brief Solid entity material material
     std::string material;
 
+    /// @brief Can the entity be interacted with cursor (on_attack, on_use)
+    bool selectable = true;
+
     /// @brief Does entity prevent blocks setup
     bool blocking = true;