Add hydra support

.github/workflows/build.yml

@@ -99,3 +99,24 @@ jobs:
           name: NanoBoyAdvance-${{ runner.os }}
           path: NanoBoyAdvance.dmg
           if-no-files-found: error
+
+  build-wasm:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup emsdk                 
+        uses: mymindstorm/setup-emsdk@v10
+        with:
+          version: 3.1.50
+          actions-cache-folder: 'emsdk-cache'
+      - name: Build
+        run: |
+          emcmake cmake -B build -DPLATFORM_HYDRA=ON -DPLATFORM_QT=OFF
+          cmake --build build
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: libNanoBoyAdvance-hydra.wasm
+          path: build/bin/hydra/libNanoBoyAdvance-hydra.wasm
+          if-no-files-found: error

CMakeLists.txt

@@ -5,6 +5,12 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 option(PLATFORM_QT "Build Qt frontend." ON)
+option(PLATFORM_HYDRA "Build Hydra core" OFF)
+
+if (PLATFORM_HYDRA)
+  set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+  add_subdirectory(src/platform/hydra ${CMAKE_CURRENT_BINARY_DIR}/bin/hydra/)
+endif()
 
 add_subdirectory(src/nba)
 add_subdirectory(src/platform/core)

src/platform/core/CMakeLists.txt

@@ -2,20 +2,23 @@ option(USE_STATIC_SDL "Link against static version of SDL library." OFF)
 option(USE_SYSTEM_TOML11 "Use system-provided toml11 library." OFF)
 option(USE_SYSTEM_UNARR "Use system-provided unarr library." OFF)
 
-if(USE_STATIC_SDL)
-  find_package(SDL2 2.0.10
-    REQUIRED COMPONENTS SDL2-static
-    OPTIONAL_COMPONENTS SDL2main
-    CONFIG)
-else()
-  find_package(SDL2 2.0.10
-    REQUIRED COMPONENTS SDL2
-    OPTIONAL_COMPONENTS SDL2main
-    CONFIG)
-endif()
+# probably move sdl stuff to qt/cmakelists
+if (NOT EMSCRIPTEN)
+  if(USE_STATIC_SDL)
+    find_package(SDL2 2.0.10
+      REQUIRED COMPONENTS SDL2-static
+      OPTIONAL_COMPONENTS SDL2main
+      CONFIG)
+  else()
+    find_package(SDL2 2.0.10
+      REQUIRED COMPONENTS SDL2
+      OPTIONAL_COMPONENTS SDL2main
+      CONFIG)
+  endif()
 
-find_package(OpenGL REQUIRED)
-find_package(GLEW REQUIRED)
+  find_package(OpenGL REQUIRED)
+  find_package(GLEW REQUIRED)
+endif()
 
 if(USE_SYSTEM_TOML11)
   find_package(toml11 3.7 REQUIRED)
@@ -54,7 +57,7 @@ endif()
 
 set(SOURCES
   src/device/ogl_video_device.cpp
-  src/device/sdl_audio_device.cpp
+  # src/device/sdl_audio_device.cpp
   src/loader/bios.cpp
   src/loader/rom.cpp
   src/loader/save_state.cpp
@@ -92,17 +95,19 @@ add_library(platform-core STATIC)
 target_sources(platform-core PRIVATE ${SOURCES} ${HEADERS} ${HEADERS_PUBLIC})
 target_include_directories(platform-core PRIVATE src PUBLIC include)
 
-if(TARGET SDL2::SDL2main)
-  target_link_libraries(platform-core PUBLIC SDL2::SDL2main)
-endif()
+if (NOT EMSCRIPTEN)
+  if(TARGET SDL2::SDL2main)
+    target_link_libraries(platform-core PUBLIC SDL2::SDL2main)
+  endif()
 
-if(USE_STATIC_SDL)
-  target_link_libraries(platform-core PUBLIC SDL2::SDL2-static)
-else()
-  target_link_libraries(platform-core PUBLIC SDL2::SDL2)
+  if(USE_STATIC_SDL)
+    target_link_libraries(platform-core PUBLIC SDL2::SDL2-static)
+  else()
+    target_link_libraries(platform-core PUBLIC SDL2::SDL2)
+  endif()
 endif()
 
 target_link_libraries(platform-core
   PRIVATE unarr::unarr
-  PUBLIC nba toml11::toml11 OpenGL::GL GLEW::GLEW
+  PUBLIC nba toml11::toml11
 )

src/platform/hydra/CMakeLists.txt

@@ -0,0 +1,13 @@
+if (EMSCRIPTEN)
+    set_property(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS TRUE)
+    set(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-s SIDE_MODULE=1")
+    set(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS "-s SIDE_MODULE=1")
+    set(CMAKE_SHARED_LIBRARY_SUFFIX_CXX ".wasm")
+    set(CMAKE_STRIP FALSE)
+endif()
+
+add_library(NanoBoyAdvance-hydra SHARED src/core.cpp)
+
+target_include_directories(NanoBoyAdvance-hydra PUBLIC include)
+target_include_directories(NanoBoyAdvance-hydra PRIVATE src)
+target_link_libraries(NanoBoyAdvance-hydra PRIVATE platform-core)