EnderTheCoder
889ce945f2
The engine now runs on a plain Web Worker (no SDL, no PROXY_TO_PTHREAD: in a pthread Emscripten proxies every filesystem syscall to the main browser thread, where synchronous XHR - and thus FS.createLazyFile - is forbidden). A page/worker pair transfers an OffscreenCanvas and forwards DOM input; assets load lazily from an embedded manifest, so entering a map fetches only that map and its tiles. Presentation: ra3.webgpu (WebGPU via Emscripten's emdawnwebgpu port, WGSL shaders, the default on wasm) and ra3.wasmgl (WebGL2, GLSL ES). The legacy SDL ra3.webgl backend is removed.
39 lines
1.7 KiB
Bash
39 lines
1.7 KiB
Bash
#!/usr/bin/env bash
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# Build the WebAssembly target (openra3.js/.wasm + worker + page) with the
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# Emscripten image.
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#
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# The engine runs inside a plain Web Worker and renders into an OffscreenCanvas
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# with no SDL, so assets load on demand: point OPENRA3_WEB_ASSETS at the
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# extracted asset tree and the build generates an assets manifest, embeds it, and
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# registers every file as an Emscripten lazy file at startup. The browser then
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# fetches each asset only when the engine opens it.
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#
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# OPENRA3_WEB_ASSETS=/path/to/assets scripts/build-wasm.sh
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#
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# open http://localhost:8199/index.html
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set -euo pipefail
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ROOT="$(cd "$(dirname "$0")/.." && pwd)"
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IMAGE="${OPENRA3_WASM_IMAGE:-openra3-wasm:local}"
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BUILD_DIR="${1:-build/wasm}"
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docker build --target dev -f "$ROOT/Dockerfile.wasm" -t "$IMAGE" "$ROOT"
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mounts=(-v "$ROOT:/work")
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configure=(-DCMAKE_TOOLCHAIN_FILE=cmake/toolchains/emscripten-wasm.cmake -DCMAKE_BUILD_TYPE=Release)
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serve_assets=()
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if [ -n "${OPENRA3_WEB_ASSETS:-}" ]; then
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mounts+=(-v "$OPENRA3_WEB_ASSETS:/assets:ro")
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manifest="$ROOT/$BUILD_DIR/assets.manifest.json"
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mkdir -p "$(dirname "$manifest")"
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python3 "$ROOT/scripts/make_web_manifest.py" --root "$OPENRA3_WEB_ASSETS" --out "$manifest"
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configure+=(-DOPENRA3_WEB_MANIFEST="/work/$BUILD_DIR/assets.manifest.json")
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serve_assets=(--assets "$OPENRA3_WEB_ASSETS")
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fi
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docker run --rm "${mounts[@]}" -w /work "$IMAGE" cmake -S . -B "$BUILD_DIR" -G Ninja "${configure[@]}"
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docker run --rm "${mounts[@]}" -w /work "$IMAGE" cmake --build "$BUILD_DIR" -j
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echo "WebAssembly: $ROOT/$BUILD_DIR/bin/index.html (+ openra3.js/.wasm, openra3.worker.js)"
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echo "serve: python3 \"$ROOT/apps/web/serve.py\" --root \"$ROOT/$BUILD_DIR/bin\" ${serve_assets[*]:-}"
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