Add support for building an AppImage

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Author: troglobit

.gitignore

@@ -3,3 +3,6 @@ demo
 font_data.h
 image_data.h
 music_data.h
+AppDir/
+appimagetool
+InfixDemo-x86_64.AppImage

Makefile

@@ -32,14 +32,15 @@ music_data.h: music.mod
 $(TARGET): $(SOURCE) $(HEADERS)
 	$(CC) $(CFLAGS) -o $(TARGET) $(SOURCE) $(LDLIBS)
 
-debug: $(SOURCE)
+debug: $(SOURCE) $(HEADERS)
 	$(CC) $(CFLAGS) $(DEBUGFLAGS) -o $(TARGET) $(SOURCE) $(LDLIBS)
 
 run: $(TARGET)
 	./$(TARGET)
 
 clean:
 	rm -f $(TARGET) font_data.h image_data.h music_data.h
+	rm -rf AppDir appimagetool InfixDemo-x86_64.AppImage
 
 docker-build:
 	docker build -t demo .
@@ -51,4 +52,21 @@ docker-run: docker-build
 		-v /tmp/.X11-unix:/tmp/.X11-unix \
 		demo
 
-.PHONY: all clean run debug docker-build docker-run
+appimage: $(TARGET)
+	@echo "Creating AppImage..."
+	@mkdir -p AppDir/usr/bin
+	@mkdir -p AppDir/usr/share/applications
+	@mkdir -p AppDir/usr/share/icons/hicolor/256x256/apps
+	@cp $(TARGET) AppDir/usr/bin/
+	@printf '[Desktop Entry]\nType=Application\nName=Infix Demo\nExec=usr/bin/demo\nIcon=demo\nCategories=Game;\n' > AppDir/usr/share/applications/demo.desktop
+	@cp jack.png AppDir/usr/share/icons/hicolor/256x256/apps/demo.png
+	@ln -sf usr/share/applications/demo.desktop AppDir/demo.desktop
+	@ln -sf usr/share/icons/hicolor/256x256/apps/demo.png AppDir/demo.png
+	@ln -sf usr/bin/demo AppDir/AppRun
+	@wget -q -c https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage -O appimagetool
+	@chmod +x appimagetool
+	@./appimagetool AppDir InfixDemo-x86_64.AppImage
+	@rm -rf AppDir appimagetool
+	@echo "AppImage created: InfixDemo-x86_64.AppImage"
+
+.PHONY: all clean run debug appimage docker-build docker-run

README.md

@@ -48,7 +48,30 @@ Or run a specific scene:
 ./demo 2  # Run only the cube scene
 ```
 
-## Docker
+## Distribution
+
+### AppImage (Recommended for sharing)
+
+Create a portable AppImage that works on most Linux distributions:
+
+```
+make appimage
+```
+
+This creates `InfixDemo-x86_64.AppImage` - a single executable file you can share with friends. They just need to:
+
+1. Download the `.AppImage` file
+2. Make it executable: `chmod +x InfixDemo-x86_64.AppImage`
+3. Run it: `./InfixDemo-x86_64.AppImage`
+
+**What is AppImage?**
+- Single-file executable that works on most Linux distros
+- No installation required - just download and run
+- Bundles all dependencies (SDL2, fonts, music, textures)
+- Works on Ubuntu, Debian, Fedora, Arch, etc.
+- Great for distributing demos to friends!
+
+### Docker
 
 ```
 make docker-run