dc2d757399
roll parts of pr385 into source tree
This does not take the PR as is.
Unlike the PR, this streamlines and minimizes the integration somewhat:
- use hints/include mechanism instead of creating alternative
Makefile.dat, Makefile.src, Makefile.top, Makefile.utl in sys/lib;
those would have been a maintenance nightmare.
- don't have alternative mkmkfile.sh and setup.sh in sys/lib.
- sys/lib/libnethackmain.c differed from sys/unix/unixmain.c by
very little, so just place a small bit of conditional code at the
top of sys/unix/unixmain.c instead.
- changed the conditional code bits from __EMSCRIPTEN__ to
CROSS_TO_WASM.
- You should be able to build the wasm result by:
cd sys/unix ; sh setup.sh hints/linux.2020 ; cd ../..
make fetch-lua (<-one time)
make WANT_LIBNH all
- You should be able to build LIBNBH by:
cd sys/unix ; sh setup.sh hints/linux.2020 ; cd ../..
make fetch-lua (<-one time)
make CROSS_TO_WASM=1 all
As it is currently coded, winshim.c requires C99.
50 lines
1.9 KiB
JavaScript
50 lines
1.9 KiB
JavaScript
const path = require("path");
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let Module;
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let userCallback;
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let savedOnRuntimeInitialized;
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// starts nethack
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function nethackStart(cb, inputModule = {}) {
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if(typeof cb !== "string" && typeof cb !== "function") throw new TypeError("expected first argument to be 'Function' or 'String' representing global callback function name");
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if(typeof inputModule !== "object") throw new TypeError("expected second argument to be object");
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let cbName;
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if(typeof cb === "function") {
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cbName = cb.name;
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if (cbName === "") cbName = "__anonymousNetHackCallback";
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if (globalThis[cbName] === undefined) globalThis[cbName] = cb;
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else if (globalThis[cbName] !== cb) throw new Error (`'globalThis["${cbName}"]' is not the same as specified callback`);
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}
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/* global globalThis */
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userCallback = globalThis[cbName];
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if(typeof userCallback !== "function") throw new TypeError(`expected 'globalThis["${cbName}"]' to be a function`);
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// if(userCallback.constructor.name !== "AsyncFunction") throw new TypeError(`expected 'globalThis["${cbName}"]' to be an async function`);
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// Emscripten Module config
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Module = inputModule;
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savedOnRuntimeInitialized = Module.onRuntimeInitialized;
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Module.onRuntimeInitialized = function (... args) {
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// after the WASM is loaded, add the shim graphics callback function
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Module.ccall(
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"shim_graphics_set_callback", // C function name
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null, // return type
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["string"], // arg types
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[cbName], // arg values
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{async: true} // options
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);
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// if the user had their own onRuntimeInitialized(), call it now
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if (savedOnRuntimeInitialized) savedOnRuntimeInitialized(... args);
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};
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// load and run the module
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var factory = require(path.join(__dirname, "../build/nethack.js"));
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factory(Module);
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}
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// TODO: ES6 'import' style module
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module.exports = nethackStart;
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