Finally a working snapcraft yaml file with confinement enabled.

Tasks that need to be done
- Enable ffmpeg
- Fix icon location
- Enter testing phase before going onto the snap store.

src/snap/snapcraft.yaml

@@ -1,27 +1,91 @@
 name: visualboyadvance-m
-version: 2.1.0
+version: 2.1.4
 summary: Nintendo Game Boy Advance Emulator
 description: |
   An open-source Nintendo Game Boy, Super Game Boy, Game Boy Advance Emulators.
 
-confinement: devmode
+grade: stable
+confinement: strict
+base: core18
+
+plugs:
+
+  desktop:
+  desktop-legacy:
+  audio-playback:
+  opengl:
+
+  home:
+  removable-media:
+
+  network:
+
+  wayland:
+
+  x11:
 
 parts:
+  wxwidgets-sdk:
+    plugin: nil
+    stage-snaps:
+    - wxwidgets-sdk-gtk3
+    stage-packages:
+    # Crash dialog support
+    - binutils
+    filesets:
+      crash-dialog-support:
+      - usr/bin/*addr2line
+      library-shared:
+      - '**/lib/**/*.so*'
+    prime:
+    - $crash-dialog-support
+    - $library-shared
   vbam:
-    source: https://github.com/visualboyadvance-m/visualboyadvance-m/archive/v2.1.0.tar.gz
+    after:
+    - wxwidgets-sdk
+
+    build-environment:
+      - CFLAGS: -I$SNAPCRAFT_STAGE/lib/wx/include/gtk3-unicode-3.0
+      - CXXFLAGS: -I$SNAPCRAFT_STAGE/lib/wx/include/gtk3-unicode-3.0
+    source: https://github.com/visualboyadvance-m/visualboyadvance-m/archive/v2.1.4.tar.gz
     plugin: cmake
+    stage-packages:
+      - libsdl2-2.0-0
+      - libsfml-network2.4
+      - libsfml-system2.4
+      - libnotify4
+      - libsm6
+      - libopenal1
+      - libpng16-16
+      - libpulse0
+      - zlib1g
+      - libgtk-3-0
+      - libgl1
+      - libglvnd0
+      - libglx0
+      - libopengl0
+
     build-packages:
       - g++
       - gcc
       - make
       - cmake
-      - libwxgtk3.0-dev
+      - pkg-config
+      - git
+      - zip
+      - libnotify-dev
       - libsdl2-dev
       - libsfml-dev
-      - libgtk2.0-dev
+      - libgtk-3-dev
+      - libopenal-dev
     configflags:
-      - -DCMAKE_INSTALL_PREFIX=/
+      - -DENABLE_OPENAL=ON
+      - -DENABLE_SDL=OFF
 
 apps:
   visualboyadvance-m:
-    command: visualboyadvance-m
+    command: bin/visualboyadvance-m
+    desktop: share/applications/wxvbam.desktop
+    extensions: [gnome-3-28]
+    environment:
+      LD_LIBRARY_PATH: $LD_LIBRARY_PATH:$SNAP/usr/lib/$SNAPCRAFT_ARCH_TRIPLET/pulseaudio