diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2bebd26..8713c74 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,8 @@ set(OpenGL_GL_PREFERENCE "GLVND")
 
 set( CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" )
 
+add_subdirectory(autogen)
+
 set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin )
 set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib )
 set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib )
diff --git a/autogen/src/analysis.cpp b/autogen/src/analysis.cpp
index 2a5da85..45cc3a1 100644
--- a/autogen/src/analysis.cpp
+++ b/autogen/src/analysis.cpp
@@ -211,13 +211,13 @@ void processClass(CXCursor cur, AnalysisState* state, std::string className, std
 
 // https://clang.llvm.org/docs/LibClang.html
 bool analyzeClasses(std::string path, std::string srcRoot, AnalysisState* state) {
-    const char* cargs[] = { "-x", "c++", "-I", srcRoot.c_str(), 0 };
+    const char* cargs[] = { "-x", "c++", "-I", srcRoot.c_str(), "-D__AUTOGEN__", 0 };
     // THANK YOU SO MUCH THIS STACKOVERFLOW ANSWER IS SO HELPFUL
     // https://stackoverflow.com/a/59206378/16255372
     CXIndex index = clang_createIndex(0, 0);
     CXTranslationUnit unit = clang_parseTranslationUnit(
         index,
-        path.c_str(), cargs, 4,
+        path.c_str(), cargs, 5,
         nullptr, 0,
         CXTranslationUnit_None);
 
diff --git a/autogen/src/codegen.cpp b/autogen/src/codegen.cpp
index 9a04598..21157ab 100644
--- a/autogen/src/codegen.cpp
+++ b/autogen/src/codegen.cpp
@@ -1,5 +1,54 @@
 #include "codegen.h"
 #include "analysis.h"
+#include <map>
+#include <string>
+#include <variant>
+
+std::map<std::string, std::string> MAPPED_TYPE = {
+    { "bool", "Data::Bool" },
+    { "int", "Data::Int" },
+    { "float", "Data::Float" },
+    { "std::string", "Data::String" },
+    { "std::weak_ptr<Instance>", "Data::InstanceRef" },
+    { "glm::vec3", "Vector3" },
+};
+
+std::map<std::string, std::monostate> ENUM_TYPES = {
+    { "SurfaceType", std::monostate() }
+};
+
+std::string castFromVariant(std::string valueStr, std::string fieldType) {
+    // Manual exception for now, enums will get their own system eventually
+    if (fieldType == "SurfaceType") {
+        return "(SurfaceType)(int)" + valueStr + ".get<Data::Int>()";
+    }
+
+    std::string mappedType = MAPPED_TYPE[fieldType];
+    return valueStr + ".get<" + (!mappedType.empty() ? mappedType : fieldType) + ">()";
+}
+
+void writePropertySetHandler(std::ofstream& out, ClassAnalysis state) {
+    out << "fallible<MemberNotFound, AssignToReadOnlyMember> " << state.name << "::InternalSetPropertyValue(std::string name, Data::Variant value) {";
+
+    out << "\n    ";
+    bool first = true;
+    for (auto& prop : state.properties) {
+        out << (first ? "" : " else ") << "if (name == \"" << prop.name << "\") {";
+
+        if (prop.flags & PropertyFlag_Readonly) {
+            out << "\n        return AssignToReadOnlyMember(\"" << state.name << "\", name)";
+        } else {
+            out << "\n        this->" << prop.fieldName << " = " << castFromVariant("value", prop.backingFieldType) << ";";
+        }
+
+        out << "\n    }";
+        first = false;
+    }
+    
+    out << "\n    return MemberNotFound(\"" << state.name << "\", name);";
+
+    out << "\n};\n\n";
+}
 
 void writeCodeForClass(std::ofstream& out, ClassAnalysis& state) {
     std::string strFlags;
@@ -24,4 +73,6 @@ void writeCodeForClass(std::ofstream& out, ClassAnalysis& state) {
     out << "const InstanceType* " << state.name << "::GetClass() {\n"
         << "    return &TYPE;\n"
         << "};\n\n";
+
+    writePropertySetHandler(out, state);
 }
\ No newline at end of file
diff --git a/autogen/src/main.cpp b/autogen/src/main.cpp
index d430785..6439db9 100644
--- a/autogen/src/main.cpp
+++ b/autogen/src/main.cpp
@@ -40,17 +40,7 @@ int main(int argc, char** argv) {
 
     AnalysisState state;
 
-    analyzeClasses("../core/src/objects/part.h", argv[1], &state);
-
-    printf("[AUTOGEN] Generating cpp files...\n");
-    for (auto& [_, clazz] : state.classes) {
-        fs::path outPath = fs::path(argv[3]) / ("class_" + clazz.name + ".cpp");
-        std::ofstream outStream(outPath);
-
-        writeCodeForClass(outStream, clazz);
-        outStream.close();
-    }
-
+    // analyzeClasses("../core/src/objects/part.h", argv[1], &state);
     // for (auto& [_, clazz] : state.classes) {
     //     printf("Class: %s\n", clazz.name.c_str());
     //     if (clazz.baseClass != "")
@@ -74,11 +64,21 @@ int main(int argc, char** argv) {
     // }
 
     // First-pass: Analyze type hierarchy
-    // for (std::string path : headerFiles) {
-    //     fs::path relpath = fs::relative(path, argv[1]);
-    //     printf("[AUTOGEN] Processing file %s...\n", relpath.c_str());
-    //     analyzeClasses(path, argv[1], &state);
-    // }
+    for (std::string path : headerFiles) {
+        fs::path relpath = fs::relative(path, argv[1]);
+        printf("[AUTOGEN] Processing file %s...\n", relpath.c_str());
+        analyzeClasses(path, argv[1], &state);
+    }
+
+    printf("[AUTOGEN] Generating cpp files...\n");
+    for (auto& [_, clazz] : state.classes) {
+        fs::path outPath = fs::path(argv[3]) / ("class_" + clazz.name + ".cpp");
+        std::ofstream outStream(outPath);
+
+        writeCodeForClass(outStream, clazz);
+        outStream.close();
+    }
+
 
     flushCaches(argv[3]);
 }
\ No newline at end of file
diff --git a/core/CMakeLists.txt b/core/CMakeLists.txt
index d9efe80..5e2f6b1 100644
--- a/core/CMakeLists.txt
+++ b/core/CMakeLists.txt
@@ -15,7 +15,12 @@ include_directories(${Stb_INCLUDE_DIR})
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(LUAJIT REQUIRED luajit)
 
-file(GLOB_RECURSE SOURCES "src/*.cpp" "src/*.h")
+# Run autogen
+add_custom_target(build_autogen ALL
+    COMMAND "${CMAKE_BINARY_DIR}/autogen/autogen" "${CMAKE_CURRENT_SOURCE_DIR}/src" "${CMAKE_CURRENT_SOURCE_DIR}/src/objects" "${CMAKE_BINARY_DIR}/generated"
+)
+
+file(GLOB_RECURSE SOURCES "src/*.cpp" "src/*.h" "${CMAKE_BINARY_DIR}/generated/*.cpp")
 add_library(openblocks STATIC ${SOURCES})
 set_target_properties(openblocks PROPERTIES OUTPUT_NAME "openblocks")
 target_link_libraries(openblocks ${GLEW_LIBRARIES} ${LUAJIT_LIBRARIES} OpenGL::GL ReactPhysics3D::ReactPhysics3D pugixml::pugixml)
diff --git a/core/src/objects/annotation.h b/core/src/objects/annotation.h
index 1b7303f..be7e8b7 100644
--- a/core/src/objects/annotation.h
+++ b/core/src/objects/annotation.h
@@ -2,9 +2,23 @@
 
 // Markers for the autogen engine to generate getters, setters, lua, etc.
 
+#ifdef __AUTOGEN__
 #define def_inst(...) clang::annotate("OB::def_inst", #__VA_ARGS__)
 
 #define def_prop(...) clang::annotate("OB::def_prop", #__VA_ARGS__)
 
 #define cframe_position_prop(...) clang::annotate("OB::cframe_position_prop", #__VA_ARGS__)
-#define cframe_rotation_prop(...) clang::annotate("OB::cframe_rotation_prop", #__VA_ARGS__)
\ No newline at end of file
+#define cframe_rotation_prop(...) clang::annotate("OB::cframe_rotation_prop", #__VA_ARGS__)
+#else
+#define def_inst(...)
+#define def_prop(...)
+#define cframe_position_prop(...)
+#define cframe_rotation_prop(...)
+#endif
+
+#define AUTOGEN_PREAMBLE \
+private: \
+result<PropertyMeta, MemberNotFound> InternalGetPropertyMeta(std::string name) override; \
+fallible<MemberNotFound, AssignToReadOnlyMember> InternalSetPropertyValue(std::string name, Data::Variant value) override; \
+result<Data::Variant, MemberNotFound> InternalGetPropertyValue(std::string name) override; \
+private:
diff --git a/core/src/objects/base/instance.cpp b/core/src/objects/base/instance.cpp
index 2bac961..6f750af 100644
--- a/core/src/objects/base/instance.cpp
+++ b/core/src/objects/base/instance.cpp
@@ -211,6 +211,9 @@ fallible<MemberNotFound, AssignToReadOnlyMember> Instance::SetPropertyValue(std:
         return {};
     }
 
+    if (InternalSetPropertyValue(name, value).isSuccess())
+        return {};
+
     auto meta_ = GetPropertyMeta(name);
     if (!meta_) return MemberNotFound(GetClass()->className, name);
     auto meta = meta_.expect();
diff --git a/core/src/objects/base/instance.h b/core/src/objects/base/instance.h
index 44fda8c..0fcb997 100644
--- a/core/src/objects/base/instance.h
+++ b/core/src/objects/base/instance.h
@@ -70,6 +70,10 @@ protected:
     Instance(const InstanceType*);
     virtual ~Instance();
 
+    virtual result<Data::Variant, MemberNotFound> InternalGetPropertyValue(std::string name);
+    virtual fallible<MemberNotFound, AssignToReadOnlyMember> InternalSetPropertyValue(std::string name, Data::Variant value);
+    virtual result<PropertyMeta, MemberNotFound> InternalGetPropertyMeta(std::string name);
+
     virtual void OnParentUpdated(std::optional<std::shared_ptr<Instance>> oldParent, std::optional<std::shared_ptr<Instance>> newParent);
     virtual void OnAncestryChanged(std::optional<std::shared_ptr<Instance>> child, std::optional<std::shared_ptr<Instance>> newParent);
     virtual void OnWorkspaceAdded(std::optional<std::shared_ptr<Workspace>> oldWorkspace, std::shared_ptr<Workspace> newWorkspace);
diff --git a/core/src/objects/part.cpp b/core/src/objects/part.cpp
index 4a6fc38..3fc00a4 100644
--- a/core/src/objects/part.cpp
+++ b/core/src/objects/part.cpp
@@ -50,17 +50,6 @@ constexpr FieldCodec cframeRotationCodec() {
     };
 }
 
-const InstanceType Part::TYPE = {
-    .super = &Instance::TYPE,
-    .className = "Part",
-    .constructor = &Part::CreateGeneric,
-    .explorerIcon = "part",
-};
-
-const InstanceType* Part::GetClass() {
-    return &TYPE;
-}
-
 Part::Part(): Part(PartConstructParams { .size = glm::vec3(2, 1.2, 4), .color = Color3(0.639216f, 0.635294f, 0.647059f) }) {
 }
 
diff --git a/core/src/objects/part.h b/core/src/objects/part.h
index aa70932..131fc5d 100644
--- a/core/src/objects/part.h
+++ b/core/src/objects/part.h
@@ -29,6 +29,7 @@ struct PartConstructParams {
 class Snap;
 
 class [[ def_inst(explorer_icon="part") ]] Part : public Instance {
+    AUTOGEN_PREAMBLE
 protected:
     // Joints where this part is Part0
     std::vector<std::weak_ptr<JointInstance>> primaryJoints;