Show local co-op icon in game card

src/modules/patcher/patcher-utils.ts

@@ -50,4 +50,50 @@ export class PatcherUtils {
 
         return str;
     }
+
+    private static isVarCharacter(char: string) {
+        const code = char.charCodeAt(0);
+
+        // Check for uppercase letters (A-Z)
+        const isUppercase = code >= 65 && code <= 90;
+
+        // Check for lowercase letters (a-z)
+        const isLowercase = code >= 97 && code <= 122;
+
+        // Check for digits (0-9)
+        const isDigit = code >= 48 && code <= 57;
+
+        // Check for special characters '_' and '$'
+        const isSpecial = char === '_' || char === '$';
+
+        return isUppercase || isLowercase || isDigit || isSpecial;
+    }
+
+    static getVariableNameBefore(str: string, index: number) {
+        if (index < 0) {
+            return null;
+        }
+
+        const end = index;
+        let start = end - 1;
+        while (PatcherUtils.isVarCharacter(str[start])) {
+            start -= 1;
+        }
+
+        return str.substring(start + 1, end);
+    }
+
+    static getVariableNameAfter(str: string, index: number) {
+        if (index < 0) {
+            return null;
+        }
+
+        const start = index;
+        let end = start + 1;
+        while (PatcherUtils.isVarCharacter(str[end])) {
+            end += 1;
+        }
+
+        return str.substring(start, end);
+    }
 }

src/modules/patcher/patcher.ts

@@ -7,6 +7,7 @@ import { BxEvent } from "@/utils/bx-event";
 import codeControllerCustomization from "./patches/controller-customization.js" with { type: "text" };
 import codePollGamepad from "./patches/poll-gamepad.js" with { type: "text" };
 import codeExposeStreamSession from "./patches/expose-stream-session.js" with { type: "text" };
+import codeGameCardIcons from "./patches/game-card-icons.js" with { type: "text" };
 import codeLocalCoOpEnable from "./patches/local-co-op-enable.js" with { type: "text" };
 import codeRemotePlayKeepAlive from "./patches/remote-play-keep-alive.js" with { type: "text" };
 import codeVibrationAdjust from "./patches/vibration-adjust.js" with { type: "text" };
@@ -1003,6 +1004,56 @@ ${subsVar} = subs;
         str = PatcherUtils.insertAt(str, index, newCode);
         return str;
     },
+
+    exposeReactCreateComponent(str: string) {
+        let index = str.indexOf('.prototype.isReactComponent={}');
+
+        index > -1 && (index = PatcherUtils.indexOf(str, '.createElement=', index));
+        if (index < 0) {
+            return false;
+        }
+
+        const newCode = 'window.BX_EXPOSED.reactCreateElement=';
+        str = PatcherUtils.insertAt(str, index - 1, newCode);
+
+        return str;
+    },
+
+    // 27.0.6-hotfix.1, 73704.js
+    gameCardCustomIcons(str: string) {
+        let initialIndex = str.indexOf('const{supportedInputIcons:');
+        if (initialIndex < 0) {
+            return false;
+        }
+
+        const returnIndex = PatcherUtils.lastIndexOf(str, 'return ', str.indexOf('SupportedInputsBadge'));
+        if (returnIndex < 0) {
+            return false;
+        }
+
+        // Find function's parameter
+        const arrowIndex = PatcherUtils.lastIndexOf(str, '=>{', initialIndex, 300);
+        if (arrowIndex < 0) {
+            return false;
+        }
+
+        const paramVar = PatcherUtils.getVariableNameBefore(str, arrowIndex);
+
+        // Find supportedInputIcons and title var names
+        const supportedInputIconsVar = PatcherUtils.getVariableNameAfter(str, PatcherUtils.indexOf(str, 'supportedInputIcons:', initialIndex, 100, true));
+
+        if (!paramVar || !supportedInputIconsVar) {
+            return false;
+        }
+
+        const newCode = renderString(codeGameCardIcons, {
+            param: paramVar,
+            supportedInputIcons: supportedInputIconsVar,
+        });
+
+        str = PatcherUtils.insertAt(str, returnIndex, newCode);
+        return str;
+    },
 };
 
 let PATCH_ORDERS = PatcherUtils.filterPatches([
@@ -1012,6 +1063,9 @@ let PATCH_ORDERS = PatcherUtils.filterPatches([
         'disableAbsoluteMouse',
     ] : []),
 
+    'exposeReactCreateComponent',
+    'gameCardCustomIcons',
+
     'modifyPreloadedState',
 
     'optimizeGameSlugGenerator',

src/modules/patcher/patches/src/game-card-icons.ts

@@ -0,0 +1,9 @@
+declare const $supportedInputIcons$: Array<any>;
+declare const $param$: { productId: string };
+
+const supportedInputIcons = $supportedInputIcons$;
+const { productId } = $param$;
+
+if (window.BX_EXPOSED.localCoOpManager.isSupported(productId)) {
+    supportedInputIcons.push(() => window.BX_EXPOSED.createReactLocalCoOpIcon());
+}