0677b2cbca
Builds a browser-playable .html/.js/.wasm/.data via `./build-web.sh` (no
new CMake top-level target — Emscripten is detected at configure time and
takes the existing kobodl through a web-flavored pipeline).
Key pieces:
- CMakeLists.txt: route SDL3 through `--use-port=sdl3`; substitute
`--use-port=libpng` for the missing sdl3_image port (Emscripten 5.0.7
ships only sdl3 + sdl3_ttf). pthread (atomics+bulk-memory) lifted to
kobo_deps so every TU agrees with wasm-ld's --shared-memory. Link with
-sASYNCIFY (avoids rewriting kobo's blocking main loop around
emscripten_set_main_loop), -sALLOW_MEMORY_GROWTH/-sMAXIMUM_MEMORY=1gb,
-sPTHREAD_POOL_SIZE=4, -lidbfs.js, and --preload-file data@/data.
- graphics/img_compat.{h,c}: libpng-backed IMG_Load shim, used in
sprite.c / gfxengine.cpp / filters.c via #include "img_compat.h".
Native builds passthrough to <SDL3_image/SDL_image.h> unchanged.
- web/shell.html: HTML wrapper that mounts /home as IDBFS for persistent
scores/config. Startup gated on addRunDependency until syncfs(true)
finishes, then /home/scores is mkdir'd post-load (the game's addPlayer
doesn't auto-create the score dir; see TODO in score.cpp).
beforeunload + visibilitychange flushes /home back to IndexedDB.
- build-web.sh: emcmake wrapper + a static server that sets the
COOP/COEP headers SharedArrayBuffer/pthreads require.
Source fixes needed to build under Emscripten's libc/libcxx:
- Renamed enemy_kind `pipe2` -> `pipe2k` (collided with libc pipe2(2)
always declared in Emscripten's <unistd.h>).
- graphics/toolkit.cpp: added missing <stdio.h> for snprintf (Emscripten's
libcxx headers don't pull it in transitively).
- states.cpp: gated the "Quit Kobo Deluxe" main-menu button on
!__EMSCRIPTEN__; exit() on the web leaves a dead canvas.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
49 lines
1.5 KiB
Bash
Executable File
49 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
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# Build Kobo Deluxe as a WebAssembly app via Emscripten.
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#
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# Prereq: install and activate emsdk so emcmake / emcc are on PATH.
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# git clone https://github.com/emscripten-core/emsdk ~/emsdk
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# ~/emsdk/emsdk install latest && ~/emsdk/emsdk activate latest
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# . ~/emsdk/emsdk_env.sh
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#
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# Output: build-web/kobodl.{html,js,wasm,data}
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# Serve from build-web/ with any static server that sets the COOP/COEP headers
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# required for SharedArrayBuffer (pthreads). Example:
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# ./build-web.sh && ./build-web.sh serve
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set -e
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HERE="$(cd "$(dirname "$0")" && pwd)"
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BUILD="$HERE/build-web"
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case "${1:-build}" in
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serve)
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cd "$BUILD"
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exec python3 -c "
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import http.server, socketserver
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class H(http.server.SimpleHTTPRequestHandler):
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def end_headers(self):
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self.send_header('Cross-Origin-Opener-Policy', 'same-origin')
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self.send_header('Cross-Origin-Embedder-Policy', 'require-corp')
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super().end_headers()
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socketserver.TCPServer(('', 8000), H).serve_forever()
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"
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;;
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clean)
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rm -rf "$BUILD"
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;;
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build|*)
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command -v emcmake >/dev/null 2>&1 || {
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echo "emcmake not found. Source emsdk_env.sh first." >&2
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exit 1
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}
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mkdir -p "$BUILD"
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cd "$BUILD"
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emcmake cmake -DCMAKE_BUILD_TYPE=Release "$HERE"
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cmake --build . -j
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echo
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echo "Built: $BUILD/kobodl.html"
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echo "Serve: ./build-web.sh serve (then open http://localhost:8000/kobodl.html)"
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;;
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esac
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