Night mode for MooMoo.IO.
// ==UserScript==
// @name Night Mode [MooMoo.IO]
// @description Night mode for MooMoo.IO.
// @version 1.0
// @author @ihymidnight
// @namespace https://greasyfork.org/en/users/1110675-ihymidnight
// @match *://*.moomoo.io/*
// @grant none
// ==/UserScript==
const originalDrawImage = CanvasRenderingContext2D.prototype.drawImage;
CanvasRenderingContext2D.prototype.drawImage = function () {
// Set the brightness of the game UI.
const shadowVal = 60;
const gameUI = document.querySelector("#gameCanvas");
gameUI.style.filter = `brightness(${shadowVal}%)`;
// Get the width and height of the image being drawn.
const imageWidth = arguments[3] || arguments[0].width;
const imageHeight = arguments[4] || arguments[0].height;
// Calculate the center of the image.
const centerX = arguments[1] + imageWidth / 2;
const centerY = arguments[2] + imageHeight / 2;
// Save the current state of the canvas.
this.save();
// Set the shadow color and blur radius.
this.shadowColor = "rgba(204, 0, 95, 0.5)";
this.shadowBlur = 10;
// Draw the image with the shadow.
originalDrawImage.apply(this, arguments);
// Restore the canvas to its previous state.
this.restore();
// Reset the shadow color and blur radius.
this.shadowColor = "transparent";
this.shadowBlur = 0;
};