Create Tagpro yellow team tiles.

const basePath = "D:\\tagpro-texture-packs";
const fs = require("fs");
const path = require("path");
const PNG = require("pngjs").PNG;
const redTilePos = {
    x: 14 * 40,
    y: 4 * 40
};
const yellowTilePos = {
    x: 13 * 40,
    y: 5 * 40
};

for (const name of fs.readdirSync(basePath)) {
    const texturePath = path.join(basePath, name, "tiles.png");

    if (!fs.existsSync(texturePath)) {
        continue;
    }

    fs.createReadStream(texturePath).pipe(new PNG()).on("parsed", function() {
        for (let x = 0; x !== 40; x++) {
            for (let y = 0; y !== 40; y++) {
                const sourceX = redTilePos.x + x;
                const sourceY = redTilePos.y + y;
                const sourceIndex = (this.width * sourceY + sourceX) << 2;

                const red = this.data[sourceIndex];
                const green = this.data[sourceIndex + 1];
                const blue = this.data[sourceIndex + 2];
                const alpha = this.data[sourceIndex + 3];

                const destX = yellowTilePos.x + x;
                const destY = yellowTilePos.y + y;
                const destIndex = (this.width * destY + destX) << 2;

                this.data[destIndex] = red;
                this.data[destIndex + 1] = red;
                this.data[destIndex + 2] = blue;
                this.data[destIndex + 3] = alpha;
            }
        }

        this.pack().pipe(fs.createWriteStream(path.join(basePath, name, "tiles.png")));
    });
}