yoni-mcscripts-lib/yoni/event/lib/eventRegistration.js

为 Minecraft Script API 中的部分接口创建了 wrapper，并提供简单的事件管理器和任务管理器，另附有一些便于代码编写的一些小工具。

import { Minecraft } from "../../basis.js";
import { EventRegistry } from "../EventRegistry.js";
import { EventSignalListeningAdapter } from "../adapting/EventSignalListeningAdapter.js";
import { logger } from "../logger.js";
const { world, system } = Minecraft;
const VanillaBeforeEvents = world.beforeEvents;
const VanillaAfterEvents = world.afterEvents;
const SystemBeforeEvents = system.beforeEvents;
const SystemAfterEvents = system.afterEvents;
export function registerMinecraftNativeEvents() {
    const eventSignals = {
        "VanillaEvents": new Set(),
        "SystemEvents": new Set(),
    };
    for (const propKey in SystemAfterEvents) {
        //@ts-ignore
        eventSignals.SystemEvents.add(SystemAfterEvents[propKey]);
    }
    for (const propKey in SystemBeforeEvents) {
        //@ts-ignore
        eventSignals.SystemEvents.add(SystemBeforeEvents[propKey]);
    }
    for (const propKey in VanillaAfterEvents) {
        //@ts-ignore
        eventSignals.VanillaEvents.add(VanillaAfterEvents[propKey]);
    }
    for (const propKey in VanillaBeforeEvents) {
        //@ts-ignore
        eventSignals.VanillaEvents.add(VanillaBeforeEvents[propKey]);
    }
    const NotAEventClassNames = [
        "BlockEvent",
        "MessageReceiveAfterEvent"
    ];
    const DefinedEventClassMappings = new Map([
        [Minecraft.ItemDefinitionTriggeredAfterEvent, Minecraft.ItemDefinitionAfterEventSignal],
        [Minecraft.ItemDefinitionTriggeredBeforeEvent, Minecraft.ItemDefinitionBeforeEventSignal],
        [Minecraft.MessageReceiveAfterEvent, Minecraft.ServerMessageAfterEventSignal]
    ]);
    const EventClasses = [];
    for (const name in Minecraft) {
        if (!name.endsWith("Event") || NotAEventClassNames.includes(name))
            continue;
        const clazz = Minecraft[name];
        if (typeof clazz !== "function") {
            throw new TypeError("event " + name + " is not a function");
        }
        const signalName = name + "Signal";
        let signalClass = DefinedEventClassMappings.get(clazz) ?? Minecraft[signalName];
        if (typeof signalClass !== "function") {
            throw new TypeError("event signal " + signalName + " is not a function");
        }
        EventClasses.push([name, clazz, signalClass]);
    }
    const mappedEventInfos = [];
    for (const eventClassEntry of EventClasses) {
        const [name, eventClass, signalClass] = eventClassEntry;
        let prefixKey = null;
        let eventSignal = null;
        FindPrefixAndSignalCode: for (const prefix in eventSignals) {
            //@ts-ignore
            const signals = eventSignals[prefix];
            for (const signal of signals) {
                if (Object.getPrototypeOf(signal) === signalClass.prototype) {
                    eventSignal = signal;
                    prefixKey = prefix;
                    signals.delete(signal);
                    break FindPrefixAndSignalCode;
                }
            }
        }
        if (eventSignal === null) {
            throw new TypeError("no match eventSignal for event: " + name);
        }
        const fullName = prefixKey + "." + name;
        const info = { fullName, eventClass, eventSignal };
        mappedEventInfos.push(info);
    }
    for (const info of mappedEventInfos) {
        const { fullName, eventClass, eventSignal } = info;
        const adapter = new EventSignalListeningAdapter(eventSignal);
        const options = {
            displayName: fullName,
            extraOption: false, noExtends: true,
            listeningAdapter: adapter
        };
        EventRegistry.register(eventClass, options);
    }
    logger.trace("{} 个Minecraft事件已注册", mappedEventInfos.length);
}