first version of scene_unique_id for nodes and resources

src/framework/nodes/node.cpp

@@ -2,7 +2,6 @@
 
 #include "framework/input.h"
 #include "framework/utils/utils.h"
-#include "framework/nodes/node_factory.h"
 
 #include "node_factory.h"
 #include "node_binary_format.h"
@@ -22,6 +21,8 @@ Node::Node()
 {
     node_type = "Node";
 
+    scene_unique_id = generate_unique_id();
+
     name = "Node_" + std::to_string(last_node_id++);
 }
 

src/framework/nodes/node.h

@@ -67,6 +67,8 @@ class Node {
     std::string name;
     std::string node_type;
 
+    std::string scene_unique_id;
+
     Node* parent = nullptr;
     std::vector<Node*> children;
 
@@ -88,25 +90,25 @@ class Node {
     virtual void serialize(std::ofstream& binary_scene_file);
     virtual void parse(std::ifstream& binary_scene_file);
 
+    void set_node_type(const std::string& new_type) { node_type = new_type; }
+    void set_name(const std::string& new_name) { name = new_name; }
+    virtual void set_aabb(const AABB& new_aabb) { aabb = new_aabb; }
+
     std::string get_name() const { return name; }
     std::string get_node_type() const { return node_type; }
+    std::string get_scene_unique_id() const { return scene_unique_id; }
     virtual std::vector<Node*>& get_children() { return children; }
+    virtual Node* get_node(std::vector<std::string>& path_tokens);
     AABB get_aabb() const;
+    Node* get_node(const std::string& path);
+    Node::AnimatableProperty get_animatable_property(const std::string& name);
+    const std::unordered_map<std::string, AnimatableProperty>& get_animatable_properties() const;
 
     template <typename T = Node*>
     T get_parent() const { if (!parent) return nullptr;  return dynamic_cast<T>(parent); };
 
-    virtual Node* get_node(std::vector<std::string>& path_tokens);
-    Node* get_node(const std::string& path);
     std::string find_path(const std::string& node_name, const std::string& current_path = "");
 
-    Node::AnimatableProperty get_animatable_property(const std::string& name);
-    const std::unordered_map<std::string, AnimatableProperty>& get_animatable_properties() const;
-
-    void set_node_type(const std::string& new_type) { node_type = new_type; }
-    void set_name(const std::string& new_name) { name = new_name; }
-    virtual void set_aabb(const AABB& new_aabb) { aabb = new_aabb; }
-
     virtual void disable_2d();
 
     virtual void clone(Node* new_node, bool copy = true);

src/framework/resources/resource.cpp

@@ -1,13 +1,17 @@
 #include "resource.h"
 
+#include "framework/utils/utils.h"
+
 #include "spdlog/spdlog.h"
 
 #include <cassert>
 
 Resource::Resource()
 {
     // TODO: set proper unique id for project save/load
-    id = reinterpret_cast<intptr_t>(this);
+    // id = reinterpret_cast<intptr_t>(this);
+
+    scene_unique_id = generate_unique_id();
 }
 
 void Resource::ref()

src/framework/resources/resource.h

@@ -22,15 +22,17 @@ class Resource {
 
     bool operator==(const Resource& other) const
     {
-        return id == other.id;
+        return scene_unique_id == other.scene_unique_id;
     }
 
     void* get_property(const std::string& name);
 
+    std::string get_scene_unique_id() const { return scene_unique_id; }
+
 private:
 
     uint32_t ref_count = 0;
-    intptr_t id = 0;
+    std::string scene_unique_id = "";
 
 protected:
 

src/framework/utils/utils.cpp

@@ -1,6 +1,8 @@
 #include "utils.h"
 
 #include <fstream>
+#include <random>
+#include <algorithm>
 
 #include "spdlog/spdlog.h"
 
@@ -97,3 +99,19 @@ std::string dirname_of_file(const std::string& fname)
         ? ""
         : fname.substr(0, pos);
 }
+
+std::string generate_unique_id(uint32_t num_characters)
+{
+    static std::string characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+    static std::random_device random_device;
+    static std::mt19937 generator(random_device());
+
+    std::uniform_int_distribution<> distribution(0, characters.size() - 1);
+    std::string unique_id = "";
+
+    for (uint32_t i = 0; i < num_characters; i++) {
+        unique_id += characters[distribution(generator)];
+    }
+
+    return unique_id;
+}

src/framework/utils/utils.h

@@ -35,3 +35,5 @@ bool read_file(const std::string & filename, std::string & content);
 
 // https://stackoverflow.com/a/8518855
 std::string dirname_of_file(const std::string& fname);
+
+std::string generate_unique_id(uint32_t num_characters = 6u);