@slippi/slippi-js/dist/common/stats/stats.esm.js

Official Project Slippi Javascript SDK

import get from 'lodash/get.js';
import { Frames } from '../types.esm.js';

const defaultOptions = {
    processOnTheFly: false,
};
class Stats {
    constructor(options) {
        this.frames = {};
        this.players = [];
        this.allComputers = [];
        this.options = Object.assign({}, defaultOptions, options);
    }
    /**
     * Should reset the frames to their default values.
     */
    setup(settings) {
        // Reset the frames since it's a new game
        this.frames = {};
        this.players = settings.players.map((v) => v.playerIndex);
        // Forward the settings on to the individual stat computer
        this.allComputers.forEach((comp) => comp.setup(settings));
    }
    register(...computer) {
        this.allComputers.push(...computer);
    }
    process() {
        if (this.players.length === 0) {
            return;
        }
        let i = this.lastProcessedFrame != null ? this.lastProcessedFrame + 1 : Frames.FIRST;
        while (this.frames[i]) {
            const frame = this.frames[i];
            // Don't attempt to compute stats on frames that have not been fully received
            if (!isCompletedFrame(this.players, frame)) {
                return;
            }
            this.allComputers.forEach((comp) => comp.processFrame(frame, this.frames));
            this.lastProcessedFrame = i;
            i++;
        }
    }
    addFrame(frame) {
        this.frames[frame.frame] = frame;
        if (this.options.processOnTheFly) {
            this.process();
        }
    }
}
function isCompletedFrame(players, frame) {
    if (!frame) {
        return false;
    }
    // This function checks whether we have successfully received an entire frame.
    // It is not perfect because it does not wait for follower frames. Fortunately,
    // follower frames are not used for any stat calculations so this doesn't matter
    // for our purposes.
    for (const player of players) {
        const playerPostFrame = get(frame, ["players", player, "post"]);
        if (!playerPostFrame) {
            return false;
        }
    }
    return true;
}

export { Stats };