Haxball Create Map
Latanya Hariri
HaxBall uses WebRTC to create peer to peer connections between the players and the room host. This technology is still fairly new and, unfortunately, some browsers (most notably Edge and Safari) don't fully support it yet.
Hi. I am making a game like haxball. I need to drag and shoot the ball but I have a problem, the ball doesn't act normal for the remote players. On the master client, the ball acts normal, while it acts weird on the remote players' screen. When the master client drags the ball, or shoots, the ball action is exactly how it has to be, but when I try to drag/shoot the ball the ball is weird. When I drag it, it is literally resisting against my player, the ball doesn't want to move, but it moves a bit, then resists again and moves again. I have seen some topics where we need to use something like PRC or something like this but I didn't get how to use it. Also I don't even know what the solution is right now. After days of work, I wanted to ask here finally. What should I do to sync the ball normally? I know lag and undeterministic physics matter but I know in this case I am doing something wrong, and I suppose these thing are not the main problem here. There must be something I haven't applied. So what should I do? Thanks in advance.
One player has control of the ball and sends the position updates. Everyone else is just using those updates when they come in and place the ball accordingly.
If you don't transfer ownership, the ball will act up, when used by anyone but the controller.
Actually yes, kind of. Since it is a 2d football game (like haxball) they will fight for the ball. I am stuck at this point for days. I don't know if you know haxball, but you can check it for a minute and then eventually you will get perfectly what I want/ask.
First I instantiated the ball rather than using it as a scene object, but it had some problems. First, the ball was appearing for the local player only and there was a ball for each client. After that I created a singleton script for 1 ball instance but it did not solve the problem that only the master client had a ball in its screen. The ball has photon view, transform view and rigidbody2d view components. Then I simply converted the ball to a scene object instead of a prefab. Now there is 1 ball but the movement is not perfect for each client. I was reading some topics and the documentation but I really didn't understand what I should do. Can you explain/show me what I have to do?
Explaining this here is sadly a bit out of scope as PUN 2 doesn't have the foundation to implement this interaction well. PUN does neither have a tick based engine (so input / reactions are imprecisely timed by definition), nor does it use the send rates I'd recommend for this kind of action.
You may want to look into Fusion. It has one authoritative client and this controls the physics. Everyone else is sending input and gets the results from the authority. This is a much better architecture for this case.
Disclaimer: Fusion is in beta currently. The APIs may still change and the docs are known to be lacking in detail and ease of use. Still, Fusion is a much better choice for this type of game, than PUN 2 is (where problems will show up much later in the development, when you polish synchronization).
It's not that simple. Physics need to run at high framerates and any delay and correction is very annoying and visible. So lag and network variance are hard to hide and the results get pretty unpredictable in many cases. Fusion syncs input to a host and the state back to all players. This is at least a consistent result.
i want to use wireshark to catch bad people coming into my room and troll. o haxball is a web based gaming site where you open a room and basically you are the host and people join into your room. I opened wireshark and try not to open any other internet related program however there are so much data going on. i want to filtre somehow only to catch people joining in my room and their ips. so i will know who is who (they always change nickname and continously trolling) i just want to know my enemies before they understand it. so what filtres should i use and where shuld i look for foreing ips? source section? help me out guys.
As you can see from the highly detailed diagram above, Wireshark can only see the traffic between your PC and the server, the traffic and IP of the troll isn't available to you. Many online games have "admin" functions that allow the game "host" to see connections, but I don't know if "haxball" does have that capability.
In Haxball you will be part of a football team, where you could control a single player with your name and number. To start a game create a profile with your information. Then you will have to look for a server with available spaces or create your own with the settings you want. During the match you will be able to control your player with your keyboard cross and when you have the ball next to you you will be able to pass or take a shot by pressing the "X" key.
The most important thing is to be a team player. Don't abuse possession of the ball and pass it, the better team will have a much better chance of getting past the opposing defense and winning the game. Haxball experts advise you to practice shooting and specialize in the mechanics of shooting in one direction while moving your player in another. It will allow you to make shots that will catch your opponents off guard. For dodging opponents and dribbling with the ball, the best tactic is to bounce the ball off walls. And when you're playing in a team, keep in mind your role in the team and stick to it. If everyone tries to do their job well, you'll have a much better chance of selling.
Haxball was developed and published in 2010 by Mario Carbajal, also known as "Basro". Initially it used Flash Player technology but due to its demise it was adapted to HTML5. Thanks to this, today you can still enjoy it in your browsers.
Before creating a Machine Learning model, I had to do some exploratory data analysis to understand the types of data we had collected. This was the beginning of brainstorming for the feature engineering I would do later. The main goal of this data analysis was to see what types of data we had and how the data was obtained.
Once I had a good understanding of the data collected I started creating different features, the inputs to the model. I had to brainstorm features that would make the model better at predicting XG. This process of brainstorming, generating and evaluating features, was a process I repeated a couple of times before I picked my final set of features.
Feature engineering is when you use domain knowledge to extract features from raw data using data mining techniques. The purpose of a feature is to make the problem easier to understand in the context of the problem. - Feature Engineering Wikipedia
I had to draw comparisons between soccer and HaxBall to create features that would make the model better at predicting XG. Haxball is less complex than soccer, this made the task of predicting XG a bit easier. In Haxball, players can only kick and block the ball, while in soccer players can make different types of headers and trick shots, etc.
The main metrics I used were precision and recall. Precision is how often a kick predicted to be a goal actually results in a goal. Recall is the fraction of all actual goals that our model correctly predicted to result in goals.
We have to contextualize the problem and the results. We know that our model is good and some reasons as to why the model performed better than the other models, but why did those specific features create a model that was good at predicting XG?
Above was my hypothesis as to why certain features made our model better than others. The most important feature of my model was the speed of the ball, boosting the model's precision by a significant amount. This can be seen below by ball_speed's SHAP value.
I received feedback about the scores of XG being too low. A kick is never certain to go in, even at goal lines. To the students/players, they believed that a value of 0.6 is too low for a kick right on goal line. I could have done some post modeling adjustments to improve the score distributions.
Players are now organized into classes. Changing someone's admin status is as simple as setting player.admin to true. Make players bigger or smaller changing the player.radius property. The same is true for discs!
Player is a class that extends AbstractDisc -- the class from which both the Player and Disc classes are derived. Therefore, it contains options to change the player's disc such as player.radius as well as specific player options like player.admin and even some very helpful methods -- player.ban() and player.kick() summarize it pretty well.
Modules are classes with a @Module decorator (you may need to allow decorators in your TS compiler to make them work). The room object is passed when the module is instantiated. You can create events and commands inside a module.
Events are created with a @Event decorator and a class method with the same name as the event. Commands are made of @ModuleCommand() decorators and the name of the class method they precede will be the command's name.
Whether the room has a bot player. In Haxball's API this is false by default, but it's recommended to set it to true. In the Haxball Extended Room's API it's true by default, and it's not only strongly recommended but a false noPlayer is also deprecated. Learn more here.
This method was intended to work with noPlayer: false, but nowadays noPlayer: false is not recommended anymore and is only mantained due to backwards compatibility by the Haxball API. Use send() instead.
An option to translate a module's messages. Modules that have a Translator function will replace the original string by a languagePack's property value if the property key matches the Translator name parameter.
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