feat(assets): Implement basic asset packing system

Introduces a new asset management system to embed binary assets directly into the demo executable.

- Creates the  directory for asset definition and an  descriptor file.

- Implements  to generate  (with  enum and  declaration) and  (with placeholder data).

- Integrates  into CMake build, making  depend on the generated asset files.

- Adds minimal integration in  and documentation in .

This addresses Task 9 (compact in-line and off-line asset system).

1 files changed, 44 insertions, 1 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 69e51c6..1d06033 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -138,6 +138,7 @@ if(DEMO_BUILD_TESTS)
 endif()
 
 option(DEMO_BUILD_TOOLS "Build tools" OFF)
+
 if(DEMO_BUILD_TOOLS)
         add_executable(spectool
             tools/spectool.cc
@@ -161,4 +162,46 @@ if(DEMO_BUILD_TOOLS)
         tools/specview.cc
     )
     target_include_directories(specview PRIVATE src)
-endif()
\ No newline at end of file
+
+    add_executable(asset_packer
+        tools/asset_packer.cc
+    )
+endif()
+
+# Configure asset generation
+set(ASSETS_TXT_PATH ${CMAKE_CURRENT_SOURCE_DIR}/assets/final/assets.txt)
+set(GENERATED_ASSETS_H ${CMAKE_CURRENT_BINARY_DIR}/src/assets.h)
+set(GENERATED_ASSETS_DATA_CC ${CMAKE_CURRENT_BINARY_DIR}/src/assets_data.cc)
+
+add_custom_command(
+    OUTPUT ${GENERATED_ASSETS_H} ${GENERATED_ASSETS_DATA_CC}
+    COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/src
+    COMMAND asset_packer ${ASSETS_TXT_PATH} ${GENERATED_ASSETS_H} ${GENERATED_ASSETS_DATA_CC}
+    DEPENDS tools/asset_packer.cc ${ASSETS_TXT_PATH}
+    COMMENT "Generating assets.h and assets_data.cc"
+)
+
+add_custom_target(generate_assets ALL
+    DEPENDS ${GENERATED_ASSETS_H} ${GENERATED_ASSETS_DATA_CC}
+)
+
+add_executable(demo64k
+    src/main.cc
+    src/platform.cc
+    src/gpu/gpu.cc
+    src/audio/audio.cc
+    src/audio/fdct.cc
+    src/audio/idct.cc
+    src/audio/window.cc
+    src/audio/synth.cc
+    third_party/glfw3webgpu/glfw3webgpu.c
+    ${GENERATED_ASSETS_DATA_CC}
+)
+
+# Ensure demo64k depends on the generated assets
+add_dependencies(demo64k generate_assets)
+
+target_link_libraries(demo64k PRIVATE ${DEMO_LIBS})
+
+# Include generated assets header for compilation
+target_include_directories(demo64k PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
\ No newline at end of file