67 lines
2.1 KiB
JavaScript
67 lines
2.1 KiB
JavaScript
import { readFileSync, existsSync } from 'node:fs';
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import { join } from 'node:path';
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/** 源数据非法时抛出。第二准则：缺失/非法一律显式暴露，不兜底。 */
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export class SourceError extends Error {
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constructor(message) { super(message); this.name = 'SourceError'; }
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}
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function readJson(dir, name) {
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const p = join(dir, name);
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if (!existsSync(p)) throw new SourceError(`缺少源数据文件: ${p}`);
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try {
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return JSON.parse(readFileSync(p, 'utf8'));
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} catch (e) {
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throw new SourceError(`源数据 JSON 解析失败: ${p} — ${e.message}`);
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}
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}
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function readArray(dir, fileName, key) {
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const json = readJson(dir, fileName);
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const arr = json[key];
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if (!Array.isArray(arr)) {
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throw new SourceError(
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`源数据 ${fileName} 缺少顶层数组 "${key}"（实际为 ${typeof arr}）`,
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);
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}
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return arr;
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}
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/**
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* 读取并校验 gameabc 导出数据。
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* 源数组用 `{}` 占位空槽（下标即 ID），须跳过。
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*/
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export function loadSource(outputDir) {
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const objects = new Map();
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for (const entry of readArray(outputDir, 'gameabc_Object.json', 'ObjectList')) {
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if (!entry || !entry.Property) continue;
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const p = entry.Property;
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objects.set(p.ObjectID, { ...p, events: Object.keys(entry.Event ?? {}) });
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}
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const images = new Map();
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for (const i of readArray(outputDir, 'gameabc_Image.json', 'ImageFileList')) {
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if (!i || i.id === undefined) continue;
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if (i.w * i.h !== i.frame_all) {
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throw new SourceError(
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`图 ${i.bmp} 的网格与帧数不符: ${i.w}x${i.h}=${i.w * i.h} != frame_all=${i.frame_all}`,
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);
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}
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images.set(i.id, i);
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}
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const layers = readArray(outputDir, 'gameabc_Layer.json', 'LayerList')
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.filter((l) => l && l.Property)
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.map((l) => ({
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layerId: l.Property.LayerID,
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name: l.Property.LayerName,
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objectIds: l.ObjectList ?? [],
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}));
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const groups = readArray(outputDir, 'gameabc_GroupList.json', 'GroupList')
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.filter((g) => g && g.GroupID !== undefined)
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.map((g) => ({ groupId: g.GroupID, objectIds: g.ObjectList ?? [] }));
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return { objects, images, layers, groups };
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}
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