Allows different userscripts to define functions that modify the game's code
Version vom
// ==UserScript==
// @name Code Injector - Bonk.io
// @version 1.0.1
// @description Allows different userscripts to define functions that modify the game's code
// @author Excigma & kklkkj
// @namespace https://greatest.deepsurf.us/users/416480
// @match https://bonk.io/gameframe-release.html
// @run-at document-body
// @grant GM_xmlhttpRequest
// @grant unsafeWindow
// ==/UserScript==
// What this does:
// - Finds other userscripts that have defined their injectors in `window.bonkCodeInjectors`, and runs them
// Credits to https://github.com/kklkkj for creating this system where multiple
// extensions can edit different parts of Bonk.io' code.
// Much of the code below was copied from or inspired by https://github.com/kklkkj/kklee/blob/master/src/runInjectors.js
// Go thank kklkkj for this
(() => {
// Original `document.head.appendChild` function that we're going to overwrite
const _appendChild = document.head.appendChild;
// When RequireJS tries to add alpha2s.js to <head> we will intercept it,
// and patch it using functions defined by other scripts in window.bonkCodeInjectors
document.head.appendChild = (...args) => {
// Sure, I can do `args?.[0]?.src.includes("alpha2s.js")`, but it's more difficult to read
if (args[0] && args[0].src.includes("alpha2s.js")) {
console.log("[Injector] Fetching original alpha2s.js...");
// Store the url of the original unmodified alpha2s.js
const alpha2sURL = args[0].src;
// Remove the src attribute so it doesn't try to load the original alpha2s.js script
args[0].removeAttribute("src");
// Fetch the original unmodified alpha2s.js so we can patch it
// eslint-disable-next-line no-undef
GM_xmlhttpRequest({
method: "GET",
url: alpha2sURL,
onload: (response) => {
console.log("[Injector] Fetched alpha2s.js. Patching...");
// Original alpha2s.js' code
let str = response.responseText;
// No bonkCodeInjectors found, this might mean that the user does not have any bonk userscripts installed
// or that they failed to load before this script
/* I commented this out because people who prefer userscripts over extensions likely
* enjoy the flexibility of being able to disable userscripts easily, and are thus likely to have
* all their userscripts disabled
*/
if (!unsafeWindow.bonkCodeInjectors) {
unsafeWindow.bonkCodeInjectors = [];
// alert("Did not find any Bonk.io userscripts to load. This may be an error, make sure you have scripts installed.");
}
// Loop through `bonkCodeInjectors` and pass alpha2s.js' code in for them to modify
for (const injector of unsafeWindow.bonkCodeInjectors) {
try {
// Run injector from other userscripts
str = injector(str);
} catch (error) {
// An injector from one of the other userscripts failed to load
alert("One of your Bonk.io userscripts was unable to be loaded");
console.error(error);
}
}
// Add the new script to the <script>'s contents
args[0].textContent = str;
// Make RequireJS think that the script loaded properly
args[0].dispatchEvent(new Event("load"));
console.log("[Injector] Patched alpha2s.js successfully");
// Append the modified <script> tag to document.head
return _appendChild.apply(document.head, args);
},
onerror: (error) => {
// Error fetching original alpha2s.js
console.error(error);
alert("An error occurred whilst loading bonk injectors.");
return _appendChild.apply(document.head, args);
}
});
} else {
return _appendChild.apply(document.head, args);
}
};
})();