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340
js/builder/build_encode_decode.js
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340
js/builder/build_encode_decode.js
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let player_build;
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let build_powders;
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function getItemNameFromID(id) { return idMap.get(id); }
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function getTomeNameFromID(id) { return tomeIDMap.get(id); }
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function parsePowdering(powder_info) {
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// TODO: Make this run in linear instead of quadratic time... ew
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let powdering = [];
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for (let i = 0; i < 5; ++i) {
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let powders = "";
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let n_blocks = Base64.toInt(powder_info.charAt(0));
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// console.log(n_blocks + " blocks");
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powder_info = powder_info.slice(1);
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for (let j = 0; j < n_blocks; ++j) {
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let block = powder_info.slice(0,5);
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let six_powders = Base64.toInt(block);
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for (let k = 0; k < 6 && six_powders != 0; ++k) {
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powders += powderNames.get((six_powders & 0x1f) - 1);
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six_powders >>>= 5;
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}
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powder_info = powder_info.slice(5);
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}
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powdering[i] = powders;
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}
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return [powdering, powder_info];
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}
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let atree_data = null;
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/*
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* Populate fields based on url, and calculate build.
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*/
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function decodeBuild(url_tag) {
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if (url_tag) {
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//default values
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let equipment = [null, null, null, null, null, null, null, null, null];
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let tomes = [null, null, null, null, null, null, null];
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let powdering = ["", "", "", "", ""];
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let info = url_tag.split("_");
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let version = info[0];
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let save_skp = false;
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let skillpoints = [0, 0, 0, 0, 0];
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let level = 106;
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let version_number = parseInt(version)
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//equipment (items)
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// TODO: use filters
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if (version_number < 4) {
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let equipments = info[1];
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for (let i = 0; i < 9; ++i ) {
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let equipment_str = equipments.slice(i*3,i*3+3);
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equipment[i] = getItemNameFromID(Base64.toInt(equipment_str));
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}
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info[1] = equipments.slice(27);
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}
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else if (version_number == 4) {
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let info_str = info[1];
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let start_idx = 0;
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for (let i = 0; i < 9; ++i ) {
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if (info_str.charAt(start_idx) === "-") {
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equipment[i] = "CR-"+info_str.slice(start_idx+1, start_idx+18);
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start_idx += 18;
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}
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else {
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let equipment_str = info_str.slice(start_idx, start_idx+3);
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equipment[i] = getItemNameFromID(Base64.toInt(equipment_str));
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start_idx += 3;
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}
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}
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info[1] = info_str.slice(start_idx);
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}
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else if (version_number <= 7) {
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let info_str = info[1];
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let start_idx = 0;
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for (let i = 0; i < 9; ++i ) {
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if (info_str.slice(start_idx,start_idx+3) === "CR-") {
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equipment[i] = info_str.slice(start_idx, start_idx+20);
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start_idx += 20;
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} else if (info_str.slice(start_idx+3,start_idx+6) === "CI-") {
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let len = Base64.toInt(info_str.slice(start_idx,start_idx+3));
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equipment[i] = info_str.slice(start_idx+3,start_idx+3+len);
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start_idx += (3+len);
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} else {
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let equipment_str = info_str.slice(start_idx, start_idx+3);
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equipment[i] = getItemNameFromID(Base64.toInt(equipment_str));
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start_idx += 3;
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}
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}
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info[1] = info_str.slice(start_idx);
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}
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//constant in all versions
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for (let i in equipment) {
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setValue(equipment_inputs[i], equipment[i]);
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}
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//level, skill point assignments, and powdering
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if (version_number == 1) {
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let powder_info = info[1];
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let res = parsePowdering(powder_info);
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powdering = res[0];
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} else if (version_number == 2) {
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save_skp = true;
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let skillpoint_info = info[1].slice(0, 10);
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for (let i = 0; i < 5; ++i ) {
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skillpoints[i] = Base64.toIntSigned(skillpoint_info.slice(i*2,i*2+2));
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}
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let powder_info = info[1].slice(10);
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let res = parsePowdering(powder_info);
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powdering = res[0];
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} else if (version_number <= 7){
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level = Base64.toInt(info[1].slice(10,12));
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setValue("level-choice",level);
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save_skp = true;
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let skillpoint_info = info[1].slice(0, 10);
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for (let i = 0; i < 5; ++i ) {
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skillpoints[i] = Base64.toIntSigned(skillpoint_info.slice(i*2,i*2+2));
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}
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let powder_info = info[1].slice(12);
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let res = parsePowdering(powder_info);
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powdering = res[0];
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info[1] = res[1];
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}
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// Tomes.
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if (version >= 6 && version < 8) {
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//tome values do not appear in anything before v6.
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for (let i in tomes) {
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let tome_str = info[1].charAt(i);
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let tome_name = getTomeNameFromID(Base64.toInt(tome_str));
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setValue(tomeInputs[i], tome_name);
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}
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info[1] = info[1].slice(7);
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}
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if (version == 7) {
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// ugly af. only works since its the last thing. will be fixed with binary decode
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atree_data = new BitVector(info[1]);
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}
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else {
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atree_data = null;
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}
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for (let i in powder_inputs) {
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setValue(powder_inputs[i], powdering[i]);
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}
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for (let i in skillpoints) {
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setValue(skp_order[i] + "-skp", skillpoints[i]);
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}
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}
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}
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/* Stores the entire build in a string using B64 encoding and adds it to the URL.
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*/
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function encodeBuild(build, powders, skillpoints, atree, atree_state) {
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//currently on version 8 - a unified version for all build types using bit-level encoding
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if (build) {
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//final link will be [build_vers]_[len_string]_[build_string]
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build_version = 8;
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let len_string = "";
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let build_string = "";
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let build_bits = new BitVector(0, 0);
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//ITEMS
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for (const item of build.items) {
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if (item.statMap.get("NONE") && item.statMap.get("NONE") === true) {
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build_bits.append(0, 2); //00
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} else if (item.statMap.get("custom")) {
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build_bits.append(3, 2); //11
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//BitVector CI encoding TODO
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// let custom = "CI-"+encodeCustom(item, true);
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// build_string += Base64.fromIntN(custom.length, 3) + custom;
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// build_version = Math.max(build_version, 5);
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} else if (item.statMap.get("crafted")) {
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build_bits.append(2, 2); //10
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//BitVector CR encoding TODO
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// build_string += "CR-"+encodeCraft(item);
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} else {
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if (item.statMap.get("category") === "tome") {
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//we will encode tomes later
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continue;
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} else {
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build_bits.append(1, 2); //01
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build_bits.append(item.statMap.get("id"), 13);
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//powderable
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if (powderable_keys.includes(item.statMap.get("type"))) {
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if (item.statMap.get("powders") && item.statMap.get("powders").length !== 0) {
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//has powders
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build_bits.append(1, 1);
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//num of powders in 8 bits, then each powder (6 bits)
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//Having more than 256 powders on a vanilla item is NOT HANDLED.
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build_bits.append(item.statMap.get("powders").length, 8);
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for (const powder of item.statMap.get("powders")) {
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build_bits.append(powder, 6);
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}
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} else {
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//no powders
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build_bits.append(0, 1);
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}
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}
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}
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}
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}
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//SKILL POINTS
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//the original schema included a flag to indicate whether or not skill points are included.
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//any reason for having a flag isn't implemented yet, so for now every build will have the skill point flag set.
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build_bits.append(1, 1);
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for (const skp of build.base_skillpoints) {
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build_bits.append(skp, 8); // Maximum skillpoints: 255 (allows for manual assign up to 150)
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}
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//BUILD LEVEL
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// [flag to indicate if level is not 106 (0/1)]
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// [else: level (7 bits, allows for lv 1->127)]
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if (player_build.level != 106) {
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build_bits.append(1, 1);
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build_bits.append(player_build.level, 7);
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} else {
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build_bits.append(0, 1);
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}
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// TOMES
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// [flag to indicate if tomes are included (0/1)]
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// [if set: 7 sequential tome IDs, each 6 bits unsigned]
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if (build.tomes.length > 0) {
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build_bits.append(1, 1);
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//decoding will assume that tomes has length of 7.
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for (const tome of build.tomes) {
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build_bits.append(tome.id, 6);
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}
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} else {
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build_bits.append(0, 1);
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}
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// ATREE
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// [flag to indicate if atree data is present]
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// [atree data: see existing encoding impl] //idk the impl
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if (atree.length > 0 && atree_state.get(atree[0].ability.id).active) {
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build_bits.append(1, 1);
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const atree_bitvec = encode_atree(atree, atree_state);
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build_bits.append(atree_bitvec);
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} else {
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build_bits.append(0, 1);
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}
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//compute length and return final build hash
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return build_version.toString() + "_" + len_string + "_" + build_string;
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}
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}
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function copyBuild() {
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copyTextToClipboard(url_base+location.hash);
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document.getElementById("copy-button").textContent = "Copied!";
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}
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function shareBuild(build) {
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if (build) {
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let text = url_base+location.hash+"\n"+
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"WynnBuilder build:\n"+
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"> "+build.items[0].statMap.get("displayName")+"\n"+
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"> "+build.items[1].statMap.get("displayName")+"\n"+
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"> "+build.items[2].statMap.get("displayName")+"\n"+
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"> "+build.items[3].statMap.get("displayName")+"\n"+
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"> "+build.items[4].statMap.get("displayName")+"\n"+
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"> "+build.items[5].statMap.get("displayName")+"\n"+
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"> "+build.items[6].statMap.get("displayName")+"\n"+
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"> "+build.items[7].statMap.get("displayName")+"\n"+
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"> "+build.items[15].statMap.get("displayName")+" ["+build_powders[4].map(x => powderNames.get(x)).join("")+"]";
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copyTextToClipboard(text);
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document.getElementById("share-button").textContent = "Copied!";
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}
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}
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/**
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* Ability tree encode and decode functions
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*
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* Based on a traversal, basically only uses bits to represent the nodes that are on (and "dark" outgoing edges).
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* credit: SockMower
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*/
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/**
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* Return: BitVector
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*/
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function encode_atree(atree, atree_state) {
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let ret_vec = new BitVector(0, 0);
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function traverse(head, atree_state, visited, ret) {
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for (const child of head.children) {
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if (visited.has(child.ability.id)) { continue; }
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visited.set(child.ability.id, true);
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if (atree_state.get(child.ability.id).active) {
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ret.append(1, 1);
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traverse(child, atree_state, visited, ret);
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}
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else {
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ret.append(0, 1);
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}
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}
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}
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traverse(atree[0], atree_state, new Map(), ret_vec);
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return ret_vec;
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}
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/**
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* Return: List of active nodes
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*/
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function decode_atree(atree, bits) {
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let i = 0;
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let ret = [];
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ret.push(atree[0]);
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function traverse(head, visited, ret) {
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for (const child of head.children) {
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if (visited.has(child.ability.id)) { continue; }
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visited.set(child.ability.id, true);
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if (bits.read_bit(i)) {
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i += 1;
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ret.push(child);
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traverse(child, visited, ret);
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}
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else {
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i += 1;
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}
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}
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}
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traverse(atree[0], new Map(), ret);
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return ret;
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}
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