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SC3D.js
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SC3D.js
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/*
* SC3D.js: parser for .scw (SC3D) files from Brawl Stars
* Copyright (c) 2019, BlaCoiso
* This file and the scw_parse project is licensed under GPL v3.0
*/
/* eslint-disable no-debugger */
/* eslint-env node, es6 */
const XML = require("./XML");
const fs = require("fs");
const MAGIC = "SC3D";
const CRCTable = new Uint32Array(256);
let CRCInitialized = false;
const importMap = new Map();
let importPath = ".";
function computeCRC(data, v) {
//Fix JS weird signed stuff
const fix32 = v => v & (1 << 31) ? (v & 0x7FFFFFFF) + 0x80000000 : v;
if (data instanceof Uint8Array) {
if (!CRCInitialized) {
for (let i = 0; i < 256; ++i) {
let c = i;
for (let k = 0; k < 8; ++k) {
c = (c & 1 ? 0xedb88320 : 0) ^ (c >>> 1);
}
CRCTable[i] = fix32(c);
}
CRCInitialized = true;
}
let c = v || 0xFFFFFFFF;
for (let i = 0; i < data.length; ++i) {
c = CRCTable[(c ^ data[i]) & 0xFF] ^ (c >>> 8);
}
return fix32(~c);
}
return 0;
}
class SC3D {
/**
* @param {Buffer} data
* @param {string?} name
*/
constructor(data, name) {
this.name = name || "unknown";
this.data = data;
if (data.compare(Buffer.from(MAGIC), 0, 3, 0, 3)) throw new TypeError("Invalid SC3D file");
/** @type {SC3DChunk[]} */
this.chunks = [];
this.loaded = false;
}
load() {
if (this.loaded) return this;
let ptr = MAGIC.length;
while (ptr < this.data.length && !this.findChunk("WEND")) {
let len = this.data.readUInt32BE(ptr) + 12;
let chunk = new SC3DChunk(this.data.slice(ptr, ptr + len), this);
this.chunks.push(chunk.parse());
ptr += len;
}
const leftOver = this.data.length - ptr;
if (leftOver) console.warn(`ROOT-> ${leftOver} bytes unprocessed`);
this.loaded = true;
return this;
}
findChunk(name) {
return this.chunks.find(chk => chk.name === name);
}
findChunks(name) {
return this.chunks.filter(chk => chk.name === name);
}
/**
* Exports a model as a COLLADA XML
* @param {SC3D?|SC3D[]} libraries List of libraries to include
*/
exportModel(libraries) {
const libImages = new XML.Tag("library_images");
const libEffects = new XML.Tag("library_effects");
const libMaterials = new XML.Tag("library_materials");
const libGeometries = new XML.Tag("library_geometries");
const libControllers = new XML.Tag("library_controllers");
const libAnimations = new XML.Tag("library_animations");
const visualScene = new XML.Tag("visual_scene", null, [["id", "Scene"], ["name", "Scene"]]);
const libVisualScene = new XML.Tag("library_visual_scenes", visualScene);
const libCameras = new XML.Tag("library_cameras");
/** @type {Array<String>[]} */
const images = [];
if (libraries instanceof SC3D) libraries.appendToLibrary(
images, libEffects, libMaterials, libGeometries,
libControllers, libAnimations, visualScene, libCameras
);
else if (Array.isArray(libraries)) libraries.filter(lib => lib instanceof SC3D)
.forEach(lib => lib.appendToLibrary(
images, libEffects, libMaterials, libGeometries,
libControllers, libAnimations, visualScene, libCameras
));
this.appendToLibrary(
images, libEffects, libMaterials, libGeometries,
libControllers, libAnimations, visualScene, libCameras
);
//Filter images without duplicate IDs
images.filter((n, i) => images.findIndex(n2 => n2[0] === n[0]) === i)
.forEach(img => libImages.appendChildren(new XML.Tag("image",
new XML.Tag("init_from", img[1]),
[["id", img[0]], ["name", img[0]]]
)));
return new XML(new XML.Tag("COLLADA", [
new XML.Tag("asset", [
new XML.Tag("contributor",
new XML.Tag("authoring_tool", `SC3D.js [${SC3D.getVersion()}] (BlaCoiso)`)
),
new XML.Tag("created", new Date().toISOString()),
new XML.Tag("up_axis", "Y_UP")
]),
libImages, libEffects, libMaterials, libGeometries, libControllers, libAnimations, libVisualScene, libCameras,
new XML.Tag("scene", new XML.Tag("instance_visual_scene", null, new XML.Attribute("url", "#Scene")))
], [
["xmlns", "http://www.collada.org/2005/11/COLLADASchema"],
["version", "1.4.1"],
["xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance"]
]
)).generate(true);
}
/**
* Appends this SC3D to a library
* @param {Array<String>[]} images
* @param {XML.Tag} libEffects
* @param {XML.Tag} libMaterials
* @param {XML.Tag} libGeometries
* @param {XML.Tag} libControllers
* @param {XML.Tag} libAnimations
* @param {XML.Tag} visualScene
* @param {XML.Tag} libCameras
*/
appendToLibrary(images, libEffects, libMaterials, libGeometries, libControllers, libAnimations, visualScene, libCameras) {
if (!this.loaded) this.load();
this.chunks.forEach(c => {
if (c instanceof SC3DHeader) {
if (c.library) c.library.appendToLibrary(images, libEffects, libMaterials, libGeometries, libControllers, libAnimations, visualScene, libCameras);
} else if (c instanceof SC3DGeometry) {
const name = c.geoName;
const meshTag = new XML.Tag("mesh");
const sources = [];
let hasVertices = false;
let hasNormals = false;
let hasUVs = false;
let hasColors = false;
if (c.props.POSITION) {
hasVertices = true;
const verts = c.props.POSITION;
verts.forEach((vert, i) => sources.push(new XML.Tag("source",
[
new XML.Tag("float_array",
vert.values.map(v => `${v.x} ${v.y} ${v.z}`).join(" "),
[["id", name + "-positions-array-" + i], ["count", vert.values.length * 3]]
),
new XML.Tag("technique_common",
new XML.Tag("accessor", [
new XML.Tag("param", null, [["name", "X"], ["type", "float"]]),
new XML.Tag("param", null, [["name", "Y"], ["type", "float"]]),
new XML.Tag("param", null, [["name", "Z"], ["type", "float"]])
], [["source", '#' + name + "-positions-array-" + i], ["count", vert.values.length], ["stride", 3]])
)
], new XML.Attribute("id", name + "-positions-" + i)
)));
}
if (c.props.NORMAL) {
hasNormals = true;
const norms = c.props.NORMAL;
norms.forEach((norm, i) => sources.push(new XML.Tag("source",
[
new XML.Tag("float_array",
norm.values.map(v => `${v.x} ${v.y} ${v.z}`).join(" "),
[["id", name + "-normals-array-" + i], ["count", norm.values.length * 3]]
),
new XML.Tag("technique_common",
new XML.Tag("accessor", [
new XML.Tag("param", null, [["name", "X"], ["type", "float"]]),
new XML.Tag("param", null, [["name", "Y"], ["type", "float"]]),
new XML.Tag("param", null, [["name", "Z"], ["type", "float"]])
], [["source", '#' + name + "-normals-array-" + i], ["count", norm.values.length], ["stride", 3]])
)
], new XML.Attribute("id", name + "-normals-" + i)
)));
}
if (c.props.TEXCOORD) {
hasUVs = true;
const texUVs = c.props.TEXCOORD;
texUVs.forEach((UV, i) => sources.push(new XML.Tag("source",
[
new XML.Tag("float_array",
UV.values.map(v => `${v.u} ${1 - v.v}`).join(" "),
[["id", name + "-uv-array-" + i], ["count", UV.values.length * 2]]
),
new XML.Tag("technique_common",
new XML.Tag("accessor", [
new XML.Tag("param", null, [["name", "S"], ["type", "float"]]),
new XML.Tag("param", null, [["name", "T"], ["type", "float"]])
], [["source", '#' + name + "-uv-array-" + i], ["count", UV.values.length], ["stride", 2]])
)
], new XML.Attribute("id", name + "-texCoords-" + i)
)));
}
if (c.props.COLOR) {
hasColors = true;
const colors = c.props.COLOR;
colors.forEach((color, i) => sources.push(new XML.Tag("source",
[
new XML.Tag("float_array",
color.values.map(a => `${a.r} ${a.g} ${a.b} ${a.a}`).join(" "),
[["id", name + "-colors-array-" + i], ["count", color.values.length * 4]]
),
new XML.Tag("technique_common",
new XML.Tag("accessor", [
new XML.Tag("param", null, [["name", "R"], ["type", "float"]]),
new XML.Tag("param", null, [["name", "G"], ["type", "float"]]),
new XML.Tag("param", null, [["name", "B"], ["type", "float"]]),
new XML.Tag("param", null, [["name", "A"], ["type", "float"]])
], [["source", '#' + name + "-colors-array-" + i], ["count", color.values.length], ["stride", 4]])
)
], new XML.Attribute("id", name + "-colors-" + i)
)));
}
meshTag.appendChildren(
[
sources,
new XML.Tag("vertices",
new XML.Tag("input", null,
[["semantic", "POSITION"], ["source", '#' + name + "-positions-0"]]
), new XML.Attribute("id", name + "-vertices")
)]
);
c.meshes.forEach((m, i) => {
const mName = name + '-' + i;
const coordID = c.props.TEXCOORD ? i % c.props.TEXCOORD.length : 0;
const includeNorms = m.triangles[0].dataA.normal !== undefined && hasNormals;
const includeUVs = m.triangles[0].dataA.texture !== undefined && hasUVs;
const includeColors = m.triangles[0].dataA.color !== undefined && hasColors;
const triTag = new XML.Tag("triangles", null,
[["material", m.material], ["count", m.triangles.length], ["name", mName]]
);
let o = 0;
if (hasVertices) triTag.appendChildren(new XML.Tag("input", null,
[["semantic", "VERTEX"], ["source", '#' + name + "-vertices-0"], ["offset", o++]]
));
if (includeNorms) triTag.appendChildren(new XML.Tag("input", null,
[["semantic", "NORMAL"], ["source", '#' + name + "-normals-0"], ["offset", o++]]
));
if (includeUVs) triTag.appendChildren(new XML.Tag("input", null,
[["semantic", "TEXCOORD"], ["source", '#' + name + "-texCoords-" + coordID], ["offset", o++], ["set", coordID]]
));
if (includeColors) triTag.appendChildren(new XML.Tag("input", null,
[["semantic", "COLOR"], ["source", '#' + name + "-colors-0"], ["offset", o++]]
));
triTag.appendChildren(new XML.Tag("p", m.triangles.map(t => {
let tA = [t.A];
let tB = [t.B];
let tC = [t.C];
if (includeNorms) {
tA.push(t.dataA.normal);
tB.push(t.dataB.normal);
tC.push(t.dataC.normal);
}
if (includeUVs) {
tA.push(t.dataA.texture);
tB.push(t.dataB.texture);
tC.push(t.dataC.texture);
}
if (includeColors) {
tA.push(t.dataA.color);
tB.push(t.dataB.color);
tC.push(t.dataC.color);
}
return tA.concat(tB, tC).join(' ');
}).join(' ')));
//TODO: Figure out what to do with the other tex coord sets
meshTag.appendChildren(triTag);
});
libGeometries.appendChildren(new XML.Tag("geometry", meshTag, [["id", name], ["name", name]]));
if (c.joints && c.joints.length) {
const skinTag = new XML.Tag("skin", null, new XML.Attribute("source", '#' + c.geoName));
if (c.hasMatrix) skinTag.appendChildren(new XML.Tag("bind_shape_matrix", c.shapeMatrix.join(' ')));
skinTag.appendChildren(new XML.Tag("source",
[
new XML.Tag("Name_array",
c.joints.map(j => j.name).join(' '),
[["id", c.geoName + "-joints-array"], ["count", c.joints.length]]
),
new XML.Tag("technique_common",
new XML.Tag("accessor",
new XML.Tag("param", null, [["name", "JOINT"], ["type", "name"]]),
[["source", `#${c.geoName}-joints-array`], ["count", c.joints.length], ["stride", 1]]
)
)
], new XML.Attribute("id", c.geoName + "-joints")
));
skinTag.appendChildren(new XML.Tag("source",
[
new XML.Tag("float_array",
c.joints.map(j => j.matrix.join(' ')).join(' '),
[["id", c.geoName + "-matrices-array"], ["count", c.joints.length * 4 * 4]]
),
new XML.Tag("technique_common",
new XML.Tag("accessor",
new XML.Tag("param", null, [["name", "TRANSFORM"], ["type", ["float4x4"]]]),
[["source", `#${c.geoName}-matrices-array`], ["count", c.joints.length], ["stride", 16]]
)
)
],
new XML.Attribute("id", c.geoName + "-matrices")
));
const weights = [];
const counts = [];
const weightData = [];
c.vertexWeights.forEach(w => {
let count = 0;
let temp = [[w.weightA, w.jointA], [w.weightB, w.jointB], [w.weightC, w.jointC], [w.weightD, w.jointD]];
for (const pair of temp) {
if (pair[0] === 0) continue;
weightData.push(pair[1]);
if (weights.includes(pair[0])) weightData.push(weights.indexOf(pair[0]));
else weightData.push(weights.push(pair[0]) - 1);
++count;
}
counts.push(count);
});
skinTag.appendChildren(new XML.Tag("source",
[
new XML.Tag("float_array", weights.join(' '),
[["id", c.geoName + "-weights-array"], ["count", weights.length]]
),
new XML.Tag("technique_common",
new XML.Tag("accessor",
new XML.Tag("param", null, [["name", "WEIGHT"], ["type", ["float"]]]),
[["source", `#${c.geoName}-weights-array`], ["count", weights.length], ["stride", 1]]
)
)
],
new XML.Attribute("id", c.geoName + "-weights")
));
skinTag.appendChildren(new XML.Tag("joints",
[
new XML.Tag("input", null, [["semantic", "JOINT"], ["source", `#${c.geoName}-joints`]]),
new XML.Tag("input", null, [["semantic", "INV_BIND_MATRIX"], ["source", `#${c.geoName}-matrices`]])
]
));
skinTag.appendChildren(new XML.Tag("vertex_weights",
[
new XML.Tag("input", null, [["semantic", "JOINT"], ["offset", 0], ["source", `#${c.geoName}-joints`]]),
new XML.Tag("input", null, [["semantic", "WEIGHT"], ["offset", 1], ["source", `#${c.geoName}-weights`]]),
new XML.Tag("vcount", counts.join(' ')),
new XML.Tag("v", weightData.join(' '))
],
new XML.Attribute("count", counts.length)
));
libControllers.appendChildren(new XML.Tag("controller", skinTag,
[["id", c.geoName + "-cont"], ["name", c.geoName + "-cont"]])
);
}
} else if (c instanceof SC3DNodeList) {
/**
* Adds node data to a tag
* @param {SC3DNode} node
* @param {XML.Tag} tag
*/
const addNodeData = (node, tag) => {
if (node.frames.length === 0);//console.warn(`Node ${node.name} has no frames, skipping transformation data`);
else {
const nodeFrame = node.frames[0];
const pos = nodeFrame.position;
const rot = nodeFrame.rotation;
const scale = nodeFrame.scale;
tag.appendChildren(new XML.Tag("translate", `${pos.x} ${pos.y} ${pos.z}`, new XML.Attribute("sid", "location")));
tag.appendChildren(new XML.Tag("rotate", `${rot.xAxis} ${rot.yAxis} ${rot.zAxis} ${rot.angle * (180 / Math.PI)}`, new XML.Attribute("sid", "rotation")));
tag.appendChildren(new XML.Tag("scale", `${scale.x} ${scale.y} ${scale.z}`, new XML.Attribute("sid", "scale")));
}
if (node.hasTarget) {
let materials;
if (node.targetType === "CONT" || node.targetType === "GEOM") {
materials = new XML.Tag("bind_material",
new XML.Tag("technique_common",
node.bindings.map(m => new XML.Tag("instance_material", null,
[["symbol", m.symbol], ["target", "#" + m.target]])
)));
}
if (node.targetType === "CONT") {
tag.appendChildren(new XML.Tag("instance_controller",
materials,
new XML.Attribute("url", '#' + node.targetName + "-cont")));
} else if (node.targetType === "GEOM") {
tag.appendChildren(new XML.Tag("instance_geometry",
materials,
new XML.Attribute("url", '#' + node.targetName)));
} else if (node.targetType === "CAME") {
tag.appendChildren(new XML.Tag("instance_camera",
null, new XML.Attribute("url", '#' + node.targetName)
));
}
}
//TODO: Frames
};
/**
* Recursively adds all node tags
* @param {SC3DNode} node
* @param {XML.Tag} parentTag
* @param {boolean} isJoint
*/
const recursiveAddTag = (node, parentTag) => {
const children = c.nodes.filter(nc => nc.parent === node.name);
const isJoint = !node.hasTarget && !children.find(c => c.hasTarget);
const childTag = new XML.Tag("node", null,
[["id", node.name], ["name", node.name], ["sid", node.name], ["type", isJoint ? "JOINT" : "NODE"]]
);
addNodeData(node, childTag);
children.forEach(nc => recursiveAddTag(nc, childTag));
parentTag.appendChildren(childTag);
};
const rootNodes = c.nodes.filter(n => !n.parent && n.name);
rootNodes.forEach(n => {
const nodeTag = new XML.Tag("node", null,
[["id", n.name], ["name", n.name], ["sid", n.name], ["type", "NODE"]]
);
addNodeData(n, nodeTag);
c.nodes.filter(nc => nc.parent === n.name).forEach(nc => recursiveAddTag(nc, nodeTag, !nc.hasTarget));
visualScene.appendChildren(nodeTag);
});
} else if (c instanceof SC3DMaterial) {
const effectPhongTag = new XML.Tag("phong");
const effectProfileTag = new XML.Tag("profile_COMMON");
const effectTag = new XML.Tag("effect", effectProfileTag, new XML.Attribute("id", c.matName + "-effect"));
let matTexIdx = 0;
let tempTexName;
const addTexture = (tex, imgName, addImg) => {
let img = imgName;
//TODO: .sc textures
if (!imgName) img = tex.replace(/\.pvr.*$/, ".png");
if (!img.endsWith(".png")) img += ".png";
effectProfileTag.appendChildren([
new XML.Tag("newparam",
new XML.Tag("surface",
new XML.Tag("init_from", tex),
new XML.Attribute("type", "2D")
),
new XML.Attribute("sid", tex + "-surface")),
new XML.Tag("newparam",
new XML.Tag("sampler2D",
new XML.Tag("source", tex + "-surface")
),
new XML.Attribute("sid", tex + "-sampler"))
]);
if (addImg !== false) images.push([tex, img]);
};
const emissionTag = new XML.Tag("emission");
const ambientTag = new XML.Tag("ambient");
const diffuseTag = new XML.Tag("diffuse");
const specularTag = new XML.Tag("specular");
if (c.ambientColor) ambientTag.appendChildren(
new XML.Tag("color", SC3DMaterial.getRGBA(c.ambientColor).join(' '))
);
else if (c.ambientTexture) {
if (c.ambientTexture === '.') {
tempTexName = c.matName + "_tex_" + matTexIdx++;
addTexture(tempTexName, c.matName + "_tex", matTexIdx === 1);
ambientTag.appendChildren(
new XML.Tag("texture", null, [["texture", tempTexName + "-sampler"], ["texcoord", "UVMap"]])
);
} else {
addTexture(c.ambientTexture);
ambientTag.appendChildren(
new XML.Tag("texture", null, [["texture", c.ambientTexture + "-sampler"], ["texcoord", "UVMap"]])
);
}
}
if (c.diffuseColor) diffuseTag.appendChildren(
new XML.Tag("color", SC3DMaterial.getRGBA(c.diffuseColor).join(' '))
);
else if (c.diffuseTexture) {
if (c.diffuseTexture === '.') {
tempTexName = c.matName + "_tex_" + matTexIdx++;
addTexture(tempTexName, c.matName + "_tex", matTexIdx === 1);
diffuseTag.appendChildren(
new XML.Tag("texture", null, [["texture", tempTexName + "-sampler"], ["texcoord", "UVMap"]])
);
} else {
addTexture(c.diffuseTexture);
diffuseTag.appendChildren(
new XML.Tag("texture", null, [["texture", c.diffuseTexture + "-sampler"], ["texcoord", "UVMap"]])
);
}
}
if (c.emissionColor) emissionTag.appendChildren(
new XML.Tag("color", SC3DMaterial.getRGBA(c.emissionColor).join(' '))
);
else if (c.emissionTexture) {
if (c.emissionTexture === '.') {
tempTexName = c.matName + "_tex_" + matTexIdx++;
addTexture(tempTexName, c.matName + "_tex", matTexIdx === 1);
emissionTag.appendChildren(
new XML.Tag("texture", null, [["texture", tempTexName + "-sampler"], ["texcoord", "UVMap"]])
);
} else {
addTexture(c.emissionTexture);
emissionTag.appendChildren(
new XML.Tag("texture", null, [["texture", c.emissionTexture + "-sampler"], ["texcoord", "UVMap"]])
);
}
}
if (emissionTag.content.length) effectPhongTag.appendChildren(emissionTag);
if (ambientTag.content.length) effectPhongTag.appendChildren(ambientTag);
if (diffuseTag.content.length) effectPhongTag.appendChildren(diffuseTag);
if (specularTag.content.length) effectPhongTag.appendChildren(specularTag);
effectPhongTag.appendChildren(new XML.Tag("index_of_refraction", new XML.Tag("float", "1")));
effectProfileTag.appendChildren(new XML.Tag("technique", effectPhongTag, new XML.Attribute("sid", "common")));
libEffects.appendChildren(effectTag);
libMaterials.appendChildren(new XML.Tag("material",
new XML.Tag("instance_effect", null, new XML.Attribute("url", `#${c.matName}-effect`)),
[["id", c.matName], ["name", c.matName]]
));
//TODO: Figure out what exactly can be done with the stencil
//TODO: Lightmaps
//TODO: Figure out more stuff
} else if (c instanceof SC3DCamera) {
libCameras.appendChildren(new XML.Tag("camera",
new XML.Tag("optics", new XML.Tag("technique_common", new XML.Tag("perspective",
[
new XML.Tag("xfov", c.xFOV),
new XML.Tag("aspect_ratio", c.aspectRatio),
new XML.Tag("znear", c.zNear),
new XML.Tag("zfar", c.zFar)
]
))),
[["id", c.camName], ["name", c.camName]]
));
}
});
}
toString() {
return `SC3D ${this.name}: ${this.chunks.length} chunks: ` +
(this.chunks.length ? '\n' + this.chunks.map(c => '\t' + c.toString().replace(/\n/g, "\n\t")).join('\n') : "");
}
static set importPath(path) {
if (path && typeof path === "string" && fs.existsSync(path)) importPath = path;
}
static get importPath() {
return importPath;
}
/**
* Imports a SC3D library
* @param {string} name
* @returns {SC3D} imported library
*/
static importLib(name) {
if (name instanceof SC3D) {
if (!name.name.endsWith(".scw")) name.name += ".scw";
if (!importMap.has(name.name)) importMap.set(name.name, name);
return name.load();
}
if (name.startsWith("sc3d/")) return this.importLib(name.replace("sc3d/", ""));
if (importMap.has(name)) return importMap.get(name);
else {
//TODO: Refactor this code
if (!name.endsWith(".scw")) name += ".scw";
const libPath = importPath + '/' + name;
if (fs.existsSync(libPath)) {
const libFile = new SC3D(fs.readFileSync(libPath), name);
importMap.set(name, libFile);
libFile.load();
return libFile;
} else if (fs.existsSync(importPath + "/sc3d/" + name)) {
importPath += "/sc3d";
return this.importLib(name);
} else if (fs.existsSync(name)) {
const libFile = new SC3D(fs.readFileSync(name), name);
importMap.set(name, libFile);
libFile.load();
return libFile;
} else if (fs.existsSync("sc3d/" + name)) {
const libFile = new SC3D(fs.readFileSync("sc3d/" + name), name);
importMap.set(name, libFile);
libFile.load();
return libFile;
}
else throw new ReferenceError("Failed to find library " + name);
}
}
static get Chunk() {
return SC3DChunk;
}
static getVersion() {
if (this.hasVersion && typeof this.version === "string" && this.version) return this.version;
const { execSync } = require("child_process");
const execOpts = { cwd: __dirname, windowsHide: true, encoding: "utf8", timeout: 10 * 1000 };
let version = "unknown-v0.1.2";
try {
const gitHash = execSync("git rev-parse --short=10 HEAD", execOpts).replace(/[\n\r]/g, "");
const gitTag = execSync("git describe --tags", execOpts).split('\n')[0].replace('\r', "");
if (gitHash && gitTag && typeof gitHash === "string") version = `git-${gitHash}-${gitTag}`;
} catch (e) {
console.error("Failed to read version from git");
}
this.hasVersion = true;
this.version = version;
return version;
}
}
class SC3DChunk {
constructor(data, container) {
if (data instanceof SC3DChunk) {
/** @type {string} */
this.name = data.name;
/** @type {number} */
this.length = data.length;
/** @type {Buffer} */
this.data = data.data;
/** @type {number} */
this.CRC = data.CRC;
/** @type {SC3D} */
this.container = data.container;
} else {
this.name = "";
for (let c = 0; c < 4; ++c) this.name += String.fromCharCode(data[4 + c]);
this.length = data.readUInt32BE(0);
this.data = data.slice(8, this.length + 8);
this.CRC = data.readUInt32BE(this.length + 8);
let computedCRC = computeCRC(data.slice(4, this.length + 8));
if (computedCRC !== this.CRC) console.warn(`CRC Mismatch for chunk ${this.name}: ` +
`0x${this.CRC.toString(16).padStart(8, '0')} !== 0x${computedCRC.toString(16).padStart(8, '0')}`);
this.container = container;
}
}
parse() {
switch (this.name) {
case "HEAD":
return new SC3DHeader(this);
case "GEOM":
return new SC3DGeometry(this);
case "NODE":
return new SC3DNodeList(this);
case "WEND":
return new SC3DWEND(this);
case "MATE":
return new SC3DMaterial(this);
case "CAME":
return new SC3DCamera(this);
default:
console.warn(`Unknown Chunk ${this.name}, ignoring...`);
}
return this;
}
toString() {
return `${this.name}[${this.length}] {CRC=${this.CRC.toString(16).padStart(8, '0')}}`;
}
static get Header() {
return SC3DHeader;
}
static get Geometry() {
return SC3DGeometry;
}
static get NodeList() {
return SC3DNodeList;
}
static get Camera() {
return SC3DCamera;
}
static get Material() {
return SC3DMaterial;
}
}
class SC3DHeader extends SC3DChunk {
constructor(item, c) {
super(item, c);
let ptr = 0;
this.version = this.data.readInt16BE(ptr);
const versionNames = ["BETA", "GLOBAL", "RELEASE2"];
if (this.version < 2) console.warn(`Attempting to parse older SC3D version ${this.version} (${versionNames[this.version]}), parsing may fail`);
else if (this.version > 2) console.warn(`Attempting to parse future SC3D version ${this.version}, parsing may fail or give incomplete results`);
//TODO: Add support for older versions
ptr += 2;
this.val2 = this.data.readInt16BE(ptr);
ptr += 2;
this.val3 = this.data.readInt32BE(ptr);
ptr += 4;
const len = this.data.readUInt16BE(ptr);
ptr += 2;
this.libName = this.data.toString("utf8", ptr, ptr + len);
ptr += len;
this.val4 = this.data.readUInt8(ptr++);
/** @type {SC3D?} */
this.library = null;
if (this.libName) this.library = SC3D.importLib(this.libName);
const leftOver = this.length - ptr;
if (leftOver) console.warn(`H-> ${leftOver} bytes unprocessed`);
}
toString() {
return `${super.toString()}; lib=${this.libName}, ver=${this.version}, v2W=${this.val2}, v3D=${this.val3}, v4B=${this.val4}`;
}
}
class SC3DGeometry extends SC3DChunk {
constructor(item, c) {
super(item, c);
let len = this.data.readUInt16BE(0);
let ptr = 2;
this.geoName = this.data.toString("utf8", ptr, ptr + len);
ptr += len;
len = this.data.readUInt16BE(ptr);
ptr += 2;
this.group = this.data.toString("utf8", ptr, ptr + len);
ptr += len;
this.props = {};
let propCount = this.data.readUInt8(ptr++);
/** @type {SC3DMesh[]} */
this.meshes = [];
for (let i = 0; i < propCount; ++i) {
len = this.data.readUInt16BE(ptr);
ptr += 2;
let propName = this.data.toString("utf8", ptr, ptr + len);
ptr += len;
let propType = this.data.readUInt8(ptr++);
let propIdx = this.data.readUInt8(ptr++);
let propSize = this.data.readUInt8(ptr++) * 2;
let propScale = this.data.readFloatBE(ptr);
ptr += 4;
let propCount = this.data.readUInt32BE(ptr);
ptr += 4;
let propLen = propCount * propSize;
let propData = this.data.slice(ptr, ptr + propLen);
ptr += propLen;
let prop = { type: propType, itemSize: propSize, count: propCount, scale: propScale, data: propData, values: [] };
if (!this.props[propName]) this.props[propName] = [];
this.props[propName][propIdx] = prop;
}
this.hasMatrix = !!this.data.readUInt8(ptr++);
this.shapeMatrix = this.hasMatrix ? SC3DGeometry.readMatrix4(this.data, ptr) : [];
ptr += this.hasMatrix ? 64 : 0;
let jointCount = this.data.readUInt8(ptr++);
this.joints = [];
for (let i = 0; i < jointCount; ++i) {
len = this.data.readUInt16BE(ptr);
ptr += 2;
let jointName = this.data.toString("utf8", ptr, ptr + len);
ptr += len;
let joint = {
name: jointName,
matrix: SC3DGeometry.readMatrix4(this.data, ptr)
};
this.joints.push(joint);
ptr += 64;
}
this.vertexWeights = [];
let vertexWeightCount = this.data.readUInt32BE(ptr);
ptr += 4;
for (let i = 0; i < vertexWeightCount; ++i) {
let vertW = {
jointA: 0, jointB: 0, jointC: 0, jointD: 0,
weightA: 0, weightB: 0, weightC: 0, weightD: 0
};
vertW.jointA = this.data.readUInt8(ptr++);
vertW.jointB = this.data.readUInt8(ptr++);
vertW.jointC = this.data.readUInt8(ptr++);
vertW.jointD = this.data.readUInt8(ptr++);
vertW.weightA = this.data.readUInt16BE(ptr) / 0xFFFF;
ptr += 2;
vertW.weightB = this.data.readUInt16BE(ptr) / 0xFFFF;
ptr += 2;
vertW.weightC = this.data.readUInt16BE(ptr) / 0xFFFF;
ptr += 2;
vertW.weightD = this.data.readUInt16BE(ptr) / 0xFFFF;
ptr += 2;
this.vertexWeights.push(vertW);
}
this.meshCount = this.data.readUInt8(ptr++);
for (let i = 0; i < this.meshCount; ++i) {
len = this.data.readUInt16BE(ptr);
ptr += 2;
const material = this.data.toString("utf8", ptr, ptr + len);
ptr += len;
len = this.data.readUInt16BE(ptr);
ptr += 2;
const str1 = this.data.toString("utf8", ptr, ptr + len);
ptr += len;
const triCount = this.data.readUInt16BE(ptr);
ptr += 2;
const triMode = this.data.readUInt16BE(ptr);
ptr += 2;
const triangles = SC3DMesh.readTriangles(this.data.slice(ptr), triCount, triMode);
ptr += 3 * triCount * (triMode & 0xFF) * (triMode >> 8);
this.meshes.push(new SC3DMesh(material, str1, triangles, this));
}
this.loadVertexData();
const leftOver = this.length - ptr;
if (leftOver) console.warn(`G-> ${leftOver} bytes unprocessed`);
}
loadVertexData() {
let vecPositions = this.props.POSITION;
let vecNormals = this.props.NORMAL;
let vecTexCoords = this.props.TEXCOORD;
let vecColors = this.props.COLOR;
for (const propName in this.props) {
const prop = this.props[propName];
if (prop[0].type > 3) console.warn(`Unknown prop type ${prop[0].type} (${propName})`);
}
if (vecPositions) {
for (const vecPos of vecPositions) {
const vecData = vecPos.data;
vecPos.values = [];
for (let i = 0; i < vecData.length; i += vecPos.itemSize) {
vecPos.values.push(
new Vec3D(vecData.readInt16BE(i), vecData.readInt16BE(i + 2), vecData.readInt16BE(i + 4))
.scale(vecPos.scale / 0x7F00)
);
}
}
}
if (vecNormals) {
for (const vecNorm of vecNormals) {
const normData = vecNorm.data;
vecNorm.values = [];
for (let i = 0; i < normData.length; i += vecNorm.itemSize) {
vecNorm.values.push(
new Vec3D(normData.readInt16BE(i), normData.readInt16BE(i + 2), normData.readInt16BE(i + 4))
.scale(vecNorm.scale / 0x7F00)
);
}
}
}
if (vecTexCoords) {
for (const texCoord of vecTexCoords) {
texCoord.values = [];
const texCoordData = texCoord.data;
for (let i = 0; i < texCoordData.length; i += texCoord.itemSize) {
texCoord.values.push({
u: texCoordData.readInt16BE(i) * texCoord.scale / 0x7F00,
v: texCoordData.readInt16BE(i + 2) * texCoord.scale / 0x7F00
});
}
}
}
if (vecColors) {
for (const color of vecColors) {
const colorData = color.data;
for (let i = 0; i < colorData.length; i += color.itemSize) {
const r = colorData.readUInt16BE(i) * color.scale / 0x7F00;
const g = colorData.readUInt16BE(i) * color.scale / 0x7F00;
const b = colorData.readUInt16BE(i) * color.scale / 0x7F00;
const a = color.itemSize === 8 ? (colorData.readUInt16BE(i) * color.scale / 0x7F00) : 1;
color.values.push({ r, g, b, a });
}
}
}
}
toString() {
const chunkData = super.toString();
const geomData = `Geometry ${this.geoName}${this.group ? " <- " + this.group : ""}: ${this.meshes.length} meshes, ${this.joints.length} joints`;
return `${chunkData}; ${geomData}` +
(this.meshes.length ? "\n" + this.meshes.map(m => `\tMat: ${m.material}, s1=${m.str1}, ${m.triangles.length} triangles`).join('\n') : "") +
(this.joints.length ? "\n\tJoints: " + this.joints.map(j => j.name).join(", ") : "");
}
static readMatrix4(data, ptr) {
let matrix = [];
for (let i = 0; i < 4 * 4; ++i) {
matrix[i] = data.readFloatBE(ptr + i * 4);
}
return matrix;
}
static get Mesh() {
return SC3DMesh;
}
}
class SC3DMesh {
/**
* @param {string} material
* @param {string} str1
* @param {array} triangles
* @param {SC3DChunk} chunk
*/
constructor(material, str1, triangles, chunk) {
this.chunk = chunk;
this.material = material;
this.str1 = str1;
this.triangles = triangles;
}
/**
* Reads the triangle list from the data
* @param {Buffer} data
* @param {number} count
* @param {number} mode
*/
static readTriangles(data, count, mode) {
const triSize = mode & 0xFF;
const triMode = mode >> 8;
const triIter = 3 * triSize * triMode;
const sizeReadLUT = [null, "8", "16BE", null, "32BE"];
if (!sizeReadLUT[triSize]) throw new RangeError("Invalid triSize " + triSize);
const sizeRead = "readUInt" + sizeReadLUT[triSize];
const triangles = [];
for (let i = 0, o = 0; i < count; ++i, o += triIter) {
const triangle = { A: 0, B: 0, C: 0, dataA: {}, dataB: {}, dataC: {} };
triangle.A = data[sizeRead](o);
triangle.B = data[sizeRead](o + triMode * triSize);
triangle.C = data[sizeRead](o + 2 * triMode * triSize);
switch (triMode) {
case 4:
triangle.dataA.color = data[sizeRead](o + 3 * triSize);
triangle.dataB.color = data[sizeRead](o + triMode * triSize + 3 * triSize);
triangle.dataC.color = data[sizeRead](o + 2 * triMode * triSize + 3 * triSize);
//falls through
case 3:
triangle.dataA.texture = data[sizeRead](o + 2 * triSize);
triangle.dataB.texture = data[sizeRead](o + triMode * triSize + 2 * triSize);
triangle.dataC.texture = data[sizeRead](o + 2 * triMode * triSize + 2 * triSize);
//falls through
case 2:
triangle.dataA.normal = data[sizeRead](o + triSize);
triangle.dataB.normal = data[sizeRead](o + triMode * triSize + triSize);
triangle.dataC.normal = data[sizeRead](o + 2 * triMode * triSize + triSize);
//falls through
case 1:
break;
default:
console.warn(`Unknown triMode ${triMode} (mode=${mode})`);
}
triangles.push(triangle);
}
return triangles;
}
static get Vec3D() {
return Vec3D;
}
}
class SC3DNodeList extends SC3DChunk {
/**
* Represents the NODE Chunk
* @param {SC3DChunk} item
*/
constructor(item, c) {
super(item, c);
/** @type {SC3DNode[]} */
this.nodes = [];
let nodeCount = this.data.readUInt16BE(0);
let ptr = 2;
for (let i = 0; i < nodeCount; ++i) {
let node = new SC3DNode(this.data.slice(ptr), this);
ptr += node.ptrLen;
this.nodes.push(node);
}
}
toString() {
return `${super.toString()}; ${this.nodes.length} nodes` +
(this.nodes.length ? ":\n" + this.nodes.map(n => '\t' + n.toString().replace(/\n/g, "\n\t")).join('\n') : "");
}
}
class SC3DNode {
/**
* @param {Buffer} data
* @param {SC3DNodeList} chunk
*/
constructor(data, chunk) {
this.data = data;
this.chunk = chunk;
let ptr = 0, len = 0;
len = this.data.readUInt16BE(ptr);
ptr += 2;
this.name = this.data.toString("utf8", ptr, ptr + len);
ptr += len;
len = this.data.readUInt16BE(ptr);
ptr += 2;
this.parent = this.data.toString("utf8", ptr, ptr + len);