From 9d2785541d46617e43c170c59baca18a1f2d3a52 Mon Sep 17 00:00:00 2001
From: Chewico <chewico3d@gmail.com>
Date: Fri, 9 Oct 2026 18:57:01 +0200
Subject: [PATCH] Sync

---
 .../include/deerith/network/sync_variable.h   | 35 +++++++++++++++++++
 .../include/deerith/universe/sync_buffer.h    | 29 ---------------
 .../include/deerith/universe/user.h           | 18 +++++++---
 sandbox/src/common/common.h                   |  4 +--
 sandbox/src/common/user_definition.cpp        | 21 +++++++----
 5 files changed, 66 insertions(+), 41 deletions(-)
 create mode 100644 deerith_engine_core/include/deerith/network/sync_variable.h
 delete mode 100644 deerith_engine_core/include/deerith/universe/sync_buffer.h

diff --git a/deerith_engine_core/include/deerith/network/sync_variable.h b/deerith_engine_core/include/deerith/network/sync_variable.h
new file mode 100644
index 0000000..6a50c36
--- /dev/null
+++ b/deerith_engine_core/include/deerith/network/sync_variable.h
@@ -0,0 +1,35 @@
+#pragma once
+#include <deerith/engine.h>
+#include <glm/glm.hpp>
+#include <array>
+
+#define BUFFER_SIZE (NETWORK_DELAY + 20)
+
+namespace deerith
+{
+    struct sync_variable_base_t
+    {
+    public:
+        virtual ~sync_variable_base_t() = default;
+    };
+
+    template <typename T>
+    struct sync_variable_entry_t
+    {
+        T value;
+        uint32_t tick_id;
+    };
+
+    template <typename T>
+    class sync_variable_t
+    {
+    public:
+        virtual ~sync_buffer_t() = default;
+
+    private:
+        std::array<sync_variable_entry_t<T>, BUFFER_SIZE> buffer;
+    };
+
+    template <>
+    class sync_variable_t
+}
\ No newline at end of file
diff --git a/deerith_engine_core/include/deerith/universe/sync_buffer.h b/deerith_engine_core/include/deerith/universe/sync_buffer.h
deleted file mode 100644
index c795e64..0000000
--- a/deerith_engine_core/include/deerith/universe/sync_buffer.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#pragma once
-#include <deerith/engine.h>
-#include <glm/glm.hpp>
-#include <array>
-
-#define BUFFER_SIZE (NETWORK_DELAY + 20)
-
-namespace deerith
-{
-    class sync_buffer
-    {
-    public:
-        virtual ~sync_buffer() = default;
-    };
-
-    class float_sync_data : public sync_buffer
-    {
-    public:
-    private:
-        std::array<float, BUFFER_SIZE> float_buffer;
-    };
-
-    class vec2_sync_data : public sync_buffer
-    {
-    public:
-    private:
-        std::array<glm::vec2, BUFFER_SIZE> buffer;
-    };
-}
\ No newline at end of file
diff --git a/deerith_engine_core/include/deerith/universe/user.h b/deerith_engine_core/include/deerith/universe/user.h
index f820b77..3fe9505 100644
--- a/deerith_engine_core/include/deerith/universe/user.h
+++ b/deerith_engine_core/include/deerith/universe/user.h
@@ -1,19 +1,29 @@
 #pragma once
-#include <deerith/universe/sync_buffer.h>
+#include <deerith/network/sync_variable.h>
+
 #include <functional>
 #include <vector>
 
 namespace deerith
 {
-    class user
+    class user_t
     {
     public:
         void *user_data = nullptr;
 
-        void add_sync_buffer(sync_buffer *sync_buffer);
+        template <typename T>
+        void register_sync_variable(sync_variable_t<T> *var);
 
     private:
-        std::vector<sync_buffer *> sync_buffer_container;
+        std::vector<sync_variable_base_t *> buffers;
     };
 
+    void register_user_sync_variables_init_callback(std::function<void(user_t &)>);
+    void register_user_sync_variables_shutdown_callback(std::function<void(user_t &)>);
+}
+
+template <typename T>
+void deerith::user_t::register_sync_variable(sync_variable_t<T> *var)
+{
+    buffers.push_back(var);
 }
\ No newline at end of file
diff --git a/sandbox/src/common/common.h b/sandbox/src/common/common.h
index b63a3a9..4224314 100644
--- a/sandbox/src/common/common.h
+++ b/sandbox/src/common/common.h
@@ -1,13 +1,13 @@
 #pragma once
 #include <deerith/universe/user.h>
-#include <deerith/universe/sync_buffer.h>
+#include <deerith/network/sync_variable.h>
 #include <deerith/universe/universe_definition.h>
 
 #include <string>
 
 struct sandbox_user_data_t
 {
-    deerith::vec2_sync_data position;
+    deerith::sync_variable_t<glm::vec2> position_sync;
 };
 
 void define_user();
\ No newline at end of file
diff --git a/sandbox/src/common/user_definition.cpp b/sandbox/src/common/user_definition.cpp
index 4dfeb93..ff91de8 100644
--- a/sandbox/src/common/user_definition.cpp
+++ b/sandbox/src/common/user_definition.cpp
@@ -1,16 +1,25 @@
 #include "common/common.h"
-#include <deerith/universe/universe_definition.h>
+#include <deerith/universe/user.h>
 #include <deerith/core/log.h>
 
-void user_definition_function(deerith::user &user_data)
+void user_sync_variables_init(deerith::user_t &user)
 {
-    deerith_trace("adding user data to new user");
-
+    deerith_trace("removing user data to new user");
     sandbox_user_data_t *sandbox_user_data = new sandbox_user_data_t();
-    user_data.add_sync_buffer(&sandbox_user_data->position);
+
+    user.user_data = sandbox_user_data;
+    user.register_sync_variable(&sandbox_user_data->position_sync);
+}
+
+void user_sync_variables_shutdown(deerith::user_t &user)
+{
+    deerith_trace("removing user");
+    delete ((sandbox_user_data_t *)user.user_data);
+    user.user_data = nullptr;
 }
 
 void client_definition()
 {
-    deerith::define_client_callback(user_definition_function);
+    deerith::register_user_sync_variables_init_callback(user_sync_variables_init);
+    deerith::register_user_sync_variables_shutdown_callback(user_sync_variables_shutdown);
 }
\ No newline at end of file