feat(gameclient): Introduce imgui framework #2127

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jurassicLizard wants to merge 53 commits into TheSuperHackers:main from jurassicLizard:feature/imgui_console_integration

Core/Libraries/CMakeLists.txt

-Original file line number
+Diff line change
@@ Expand Up / @@ -10,3 +10,8 @@ add_subdirectory(Source/debug) @@
     add_subdirectory(Source/EABrowserDispatch)
     add_subdirectory(Source/EABrowserEngine)
     add_subdirectory(Source/Compression)
+    # Imgui library
+    if (RTS_BUILD_OPTION_IMGUI)
+        add_subdirectory(Source/ImGui)
+    endif ()

Core/Libraries/Source/ImGui/CMakeLists.txt

-Original file line number
+Diff line change
@@ -0,0 +1,57 @@
+    FetchContent_Declare(
+        imgui
+        GIT_REPOSITORY https://github.com/ocornut/imgui.git
+        GIT_TAG 791ad9b82db44ada9fedb3e26b2d900974ac0959
+        SYSTEM
+    )
+    FetchContent_MakeAvailable(imgui)
+    # Main IMGUI sources we are going to need
+    set(IMGUI_BASE_SRCS
+        "${imgui_SOURCE_DIR}/imgui.cpp"
+        "${imgui_SOURCE_DIR}/imgui_draw.cpp"
+        "${imgui_SOURCE_DIR}/imgui_tables.cpp"
+        "${imgui_SOURCE_DIR}/imgui_widgets.cpp"
+        "${imgui_SOURCE_DIR}/imgui_demo.cpp"
+    )
+    # Main Win32 DX8 specific sources we are going to need we can specify more if we need extra platforms
+    set(IMGUI_WIN32_DX8_ALL_SRCS
+        "${IMGUI_BASE_SRCS}"
+        "${imgui_SOURCE_DIR}/backends/imgui_impl_win32.cpp"
+        "${CMAKE_SOURCE_DIR}/Core/Libraries/Source/ImGui/dx8_backend/imgui_impl_dx8.cpp"
+    )
+    # All Include directories
+    set(IMGUI_INCLUDE_DIRS
+        "${imgui_SOURCE_DIR}"
+        "${imgui_SOURCE_DIR}/backends"
+        # DX8 override. Remove the following once we are using a standard backend
+        "${CMAKE_SOURCE_DIR}/Core/Libraries/Source/ImGui/dx8_backend"
+    )
+    # start target build section
+    # we currently have a hard dependency on dx8 and win32 api
+    if (WIN32)
+        MESSAGE(STATUS "Enabling ImGui")
+        add_library(lib_imgui STATIC ${IMGUI_WIN32_DX8_ALL_SRCS}
+            "${CMAKE_CURRENT_LIST_DIR}/wrapper/ImGuiFrameManager.cpp"
+        )
+        target_include_directories(lib_imgui
+            PUBLIC ${IMGUI_INCLUDE_DIRS}
+            PUBLIC "${CMAKE_CURRENT_LIST_DIR}/wrapper")
+        target_link_libraries(lib_imgui PRIVATE d3d8lib)
+        # use our own imconfig.h
+        target_compile_definitions(lib_imgui
+            PRIVATE IMGUI_DISABLE_DEFAULT_IMCONFIG
+            PRIVATE IMGUI_USER_CONFIG="${CMAKE_CURRENT_LIST_DIR}/imconfig.h"
+            INTERFACE RTS_HAS_IMGUI
+        )
+    else ()
+        # currently only WIN32 DX is supported
+        MESSAGE(FATAL_ERROR "Non-Windows platforms currently not supported for ImGui")
+    endif ()

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