arx-convert
Version:
Converts various Arx Fatalis formats to JSON or YAML and back
56 lines • 2.57 kB
JavaScript
import { BinaryIO } from '../common/BinaryIO.js';
import { FTL_VERSION } from './constants.js';
export class FtlHeader {
static readFrom(binary) {
binary.readString(4); // identifier - always "FTL\0"
binary.readFloat32(); // version - always FTL_VERSION
binary.readString(512); // checksum - contains data, but ArxLibertatis doesn't read it
binary.readInt32(); // 3d data offset - always 544
binary.readInt32(); // cylinder offset - always -1, ignored by arx
binary.readInt32(); // progressive data offset - always -1, ignored by arx
binary.readInt32(); // clothes data offset - mostly -1, ignored by arx
binary.readInt32(); // collision sphere offset - always -1, ignored by arx
binary.readInt32(); // physics box offset - always -1, ignored by arx
return {
numberOfVertices: binary.readInt32(),
numberOfFaces: binary.readInt32(),
numberOfTextures: binary.readInt32(),
numberOfGroups: binary.readInt32(),
numberOfActions: binary.readInt32(),
numberOfSelections: binary.readInt32(),
origin: binary.readUint32(),
name: binary.readString(256),
};
}
static accumulateFrom(json) {
const buffer = new ArrayBuffer(FtlHeader.sizeOf());
const binary = new BinaryIO(buffer);
binary.writeString('FTL', 4);
binary.writeFloat32(FTL_VERSION);
binary.writeString('', 512); // checksum
binary.writeInt32(544); // 3d data offset
binary.writeInt32(-1); // cylinder offset
binary.writeInt32(-1); // progressive data offset
binary.writeInt32(-1); // clothes data offset
binary.writeInt32(-1); // collision sphere offset
binary.writeInt32(-1); // physics box offset
binary.writeInt32(json.vertices.length);
binary.writeInt32(json.faces.length);
binary.writeInt32(json.textureContainers.length);
binary.writeInt32(json.groups.length);
binary.writeInt32(json.actions.length);
binary.writeInt32(json.selections.length);
binary.writeUint32(json.header.origin);
binary.writeString(json.header.name, 256);
return buffer;
}
static sizeOf() {
return (BinaryIO.sizeOfString(4) +
BinaryIO.sizeOfFloat32() +
BinaryIO.sizeOfString(512) +
12 * BinaryIO.sizeOfInt32() +
BinaryIO.sizeOfUint32() +
BinaryIO.sizeOfString(256));
}
}
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