Marry 乒乓球游戏：Godot 4.6 + C++ GDExtension

CMakeLists.txt

@@ -0,0 +1,44 @@
+cmake_minimum_required(VERSION 3.24)
+project(pingpang)
+
+# 标准 C++17
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+# 引用 godot-cpp（CMake 方式）
+set(GODOT_CPP_PATH "${CMAKE_CURRENT_SOURCE_DIR}/godot-cpp")
+add_subdirectory("${GODOT_CPP_PATH}")
+
+# 扩展库本体
+add_library(pingpang SHARED
+    src/register_types.cpp
+    src/register_types.h
+    src/pingpong_ball.cpp
+    src/pingpong_ball.h
+    src/pingpong_paddle.cpp
+    src/pingpong_paddle.h
+    src/pingpong_game.cpp
+    src/pingpong_game.h
+)
+
+target_include_directories(pingpang PRIVATE src)
+
+# 链接 godot-cpp
+target_link_libraries(pingpang PRIVATE godot-cpp)
+
+# 输出到 main/bin/ 目录（Godot 项目从这里加载 GDExtension）
+set_target_properties(pingpang PROPERTIES
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/main/bin"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/main/bin"
+    ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/main/bin"
+    PREFIX ""
+)
+
+# VS 多配置生成器会输出到子目录，这里复制到 main/bin/ 根目录
+add_custom_command(TARGET pingpang POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+        "$<TARGET_FILE:pingpang>"
+        "${CMAKE_CURRENT_SOURCE_DIR}/main/bin/$<TARGET_FILE_NAME:pingpang>"
+    COMMENT "复制 pingpang.dll 到 main/bin/ 根目录"
+)