eh, i guess physX didn't like windows?

CMakeLists.txt

@@ -287,4 +287,31 @@ add_custom_command(TARGET ModularityPlayer POST_BUILD
     COMMAND ${CMAKE_COMMAND} -E copy_directory
         ${CMAKE_SOURCE_DIR}/Resources
         $<TARGET_FILE_DIR:ModularityPlayer>/Resources
-)	
+)
+
+# ==================== Copy PhysX DLLs (Windows) ====================
+if(WIN32 AND MODULARITY_ENABLE_PHYSX)
+    set(PHYSX_COPY_SCRIPT ${CMAKE_SOURCE_DIR}/cmake/CopyPhysXDLLs.cmake)
+    if(MODULARITY_BUILD_EDITOR)
+        add_custom_command(TARGET Modularity POST_BUILD
+            COMMAND ${CMAKE_COMMAND}
+                -D SRC_DIR=${PX_OUTPUT_BIN_DIR}
+                -D DST_DIR=$<TARGET_FILE_DIR:Modularity>
+                -P ${PHYSX_COPY_SCRIPT}
+            COMMAND ${CMAKE_COMMAND}
+                -D SRC_DIR=${CMAKE_BINARY_DIR}/physx/sdk_source_bin
+                -D DST_DIR=$<TARGET_FILE_DIR:Modularity>
+                -P ${PHYSX_COPY_SCRIPT}
+        )
+    endif()
+    add_custom_command(TARGET ModularityPlayer POST_BUILD
+        COMMAND ${CMAKE_COMMAND}
+            -D SRC_DIR=${PX_OUTPUT_BIN_DIR}
+            -D DST_DIR=$<TARGET_FILE_DIR:ModularityPlayer>
+            -P ${PHYSX_COPY_SCRIPT}
+        COMMAND ${CMAKE_COMMAND}
+            -D SRC_DIR=${CMAKE_BINARY_DIR}/physx/sdk_source_bin
+            -D DST_DIR=$<TARGET_FILE_DIR:ModularityPlayer>
+            -P ${PHYSX_COPY_SCRIPT}
+    )
+endif()

cmake/CopyPhysXDLLs.cmake

@@ -0,0 +1,17 @@
+if(NOT DEFINED SRC_DIR OR NOT DEFINED DST_DIR)
+    message(FATAL_ERROR "CopyPhysXDLLs.cmake requires SRC_DIR and DST_DIR.")
+endif()
+
+if(NOT EXISTS "${SRC_DIR}")
+    return()
+endif()
+
+file(MAKE_DIRECTORY "${DST_DIR}")
+file(GLOB_RECURSE PHYSX_DLLS RELATIVE "${SRC_DIR}" "${SRC_DIR}/*.dll")
+
+foreach(dll ${PHYSX_DLLS})
+    set(src "${SRC_DIR}/${dll}")
+    if(EXISTS "${src}")
+        file(COPY "${src}" DESTINATION "${DST_DIR}")
+    endif()
+endforeach()

src/ScriptCompiler.cpp

@@ -51,19 +51,6 @@ namespace {
         return output;
     }
 
-    std::string escapeForCmd(const std::string& value) {
-        std::string out;
-        out.reserve(value.size());
-        for (char c : value) {
-            if (c == '"') {
-                out += "\"\"";
-            } else {
-                out += c;
-            }
-        }
-        return out;
-    }
-
     std::string findVsDevCmd() {
         std::string vsInstall = getEnvValue("VSINSTALLDIR");
         if (!vsInstall.empty()) {
@@ -146,7 +133,7 @@ namespace {
         wrapped << "cmd /c \"\""
                 << vsDevCmd
                 << "\" -arch=x64 -host_arch=x64 >nul && "
-                << escapeForCmd(command)
+                << command
                 << "\"";
         return wrapped.str();
     }