49 lines
1.3 KiB
TypeScript
49 lines
1.3 KiB
TypeScript
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import type { SysCallMapping } from "$lib/plugos/system.ts";
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import type { EventListenerDef } from "$common/space_script.ts";
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import { buildThreadLocalEnv, handleLuaError } from "$common/space_lua_api.ts";
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import {
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type ILuaFunction,
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jsToLuaValue,
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luaCall,
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LuaStackFrame,
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luaValueToJS,
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} from "$common/space_lua/runtime.ts";
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import type { CommonSystem } from "$common/common_system.ts";
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export type CallbackEventListener = EventListenerDef & {
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run: ILuaFunction;
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};
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export function eventListenerSyscalls(
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commonSystem: CommonSystem,
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): SysCallMapping {
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return {
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/**
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* Define a Lua event listener
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*/
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"event.listen": (
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_ctx,
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def: CallbackEventListener,
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) => {
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console.log("Registering Lua event listener: ", def.name);
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commonSystem.scriptEnv.registerEventListener(
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def,
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async (...args: any[]) => {
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const tl = await buildThreadLocalEnv(
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commonSystem.system,
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commonSystem.spaceLuaEnv.env,
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);
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const sf = new LuaStackFrame(tl, null);
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try {
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return luaValueToJS(
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await luaCall(def.run, args.map(jsToLuaValue), sf),
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);
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} catch (e: any) {
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await handleLuaError(e, commonSystem.system);
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}
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},
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);
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},
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};
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}
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