updated category selection logic

main.js

@@ -56,6 +56,7 @@ var config = {
 	answerPreview: true,
 	timer: 60,
 };
+var enabledCategories = [];
 
 // Get question categories
 function isCategoryEnabledByDefault(id){
@@ -188,6 +189,14 @@ io.on("connection", (socket) => {
 			userPoints.push(0);
 		}
 
+		enabledCategories = [];
+		for(var i=0; i<config.categories.length; i++){
+			if(config.categories[i].enabled){
+				enabledCategories.push(config.categories[i].id);
+			}
+		}
+		enabledCategories.sort(() => rand(0, 100));
+
 		// Send game data
 		var dataUser = {usernames:userNames, questionsTotal:questionsTotal};
 		for(i=0; i<userSockets.length; i++){
@@ -325,7 +334,9 @@ function next(){
 		}else{
 			// Load new question
 			console.log("Loading new question...");
-			var category = QUESTION_CATEGORIES[rand(0, QUESTION_CATEGORIES.length)];
+
+			var category = enabledCategories[questionNr % enabledCategories.length];
+
 			fetch("https://opentdb.com/api.php?amount=1&type=multiple&category="+category)
 				.then(res => res.json()) // Convert to JSON
 				.then(json => {