arx-convert/dist/dlf/DlfHeader.js

Converts various Arx Fatalis formats to JSON or YAML and back

import { BinaryIO } from '../common/BinaryIO.js';
import { DANAE_VERSION } from '../common/constants.js';
import { repeat } from '../common/helpers.js';
export class DlfHeader {
    static readFrom(binary) {
        binary.readFloat32(); // version - always DANAE_VERSION
        binary.readString(16); // identifier - always "DANAE_FILE"
        const dataBlock = {
            lastModifiedBy: binary.readString(256),
            lastModifiedAt: binary.readInt32(),
            player: {
                position: binary.readVector3(),
                orientation: binary.readRotation(),
            },
        };
        binary.readInt32(); // number of scenes - always 1
        const numberOfInteractiveObjects = binary.readInt32();
        binary.readInt32(); // number of nodes - always 0
        binary.readInt32(); // number of node links - always 12
        binary.readInt32(); // number of zones - always 0, zones are merged with paths, so we get this via numberOfZonesAndPaths
        binary.readInt32(); // lighting - we don't parse it as it's 0 in all the levels
        binary.readInt32Array(256); // Bpad - ?
        binary.readInt32(); // number of lights - always 0 as lights are stored in LLF files
        const numberOfFogs = binary.readInt32();
        const numberOfPolygonsInFTS = binary.readInt32();
        binary.readInt32(); // number of ignored polygons - always 0
        binary.readInt32(); // number of child polygons - always 0
        const numberOfZonesAndPaths = binary.readInt32();
        binary.readInt32Array(250); // pad - ?
        binary.readVector3(); // offset - always Vector3(0, 0, 0)
        binary.readFloat32Array(253); // fpad - ?
        binary.readString(4096); // cpad - ?
        binary.readInt32Array(256); // bpad - ?
        return {
            ...dataBlock,
            numberOfInteractiveObjects,
            numberOfFogs,
            numberOfPolygonsInFTS,
            numberOfZonesAndPaths,
        };
    }
    static accumulateFrom(json) {
        const buffer = new ArrayBuffer(DlfHeader.sizeOf());
        const binary = new BinaryIO(buffer);
        binary.writeFloat32(DANAE_VERSION);
        binary.writeString('DANAE_FILE', 16);
        binary.writeString(json.header.lastModifiedBy, 256);
        binary.writeInt32(json.header.lastModifiedAt);
        binary.writeVector3(json.header.player.position);
        binary.writeRotation(json.header.player.orientation);
        binary.writeInt32(1); // number of scenes
        binary.writeInt32(json.interactiveObjects.length);
        binary.writeInt32(0); // number of nodes
        binary.writeInt32(12); // number of node links
        binary.writeInt32(0); // number of zones
        binary.writeInt32(0); // lighting
        binary.writeInt32Array(repeat(0, 256));
        binary.writeInt32(0); // number of lights -> stored in LLF
        binary.writeInt32(json.fogs.length);
        binary.writeInt32(json.header.numberOfPolygonsInFTS);
        binary.writeInt32(0); // number of ignored polygons
        binary.writeInt32(0); // number of child polygons
        binary.writeInt32(json.paths.length + json.zones.length);
        binary.writeInt32Array(repeat(0, 250)); // pad
        binary.writeVector3({ x: 0, y: 0, z: 0 }); // offset
        binary.writeFloat32Array(repeat(0, 253)); // fpad
        binary.writeString('', 4096); // cpad
        binary.writeInt32Array(repeat(0, 256)); // bpad
        return buffer;
    }
    static sizeOf() {
        return (BinaryIO.sizeOfFloat32() +
            BinaryIO.sizeOfString(16 + 256) +
            BinaryIO.sizeOfInt32() +
            BinaryIO.sizeOfVector3() +
            BinaryIO.sizeOfRotation() +
            BinaryIO.sizeOfInt32Array(6 + 256 + 6 + 250) +
            BinaryIO.sizeOfVector3() +
            BinaryIO.sizeOfFloat32Array(253) +
            BinaryIO.sizeOfString(4096) +
            BinaryIO.sizeOfInt32Array(256));
    }
}
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