Antriel

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Everything posted by Antriel

  1. Antriel

    How much faster is phaser3?

    They get rendered, although there is a way to cull them if you want (not always faster though, as it needs to figure out which are in bounds, but you can always make your own culling that would be faster if possible). No idea about fillrate of off-screen stuff. They do get send to GPU for rendering, but the actual fragments won't get rendered if they are outside, so I would reckon it won't affect fillrate. But I'm just guessing.
  2. Antriel

    OkijinGames Visual Fx

    Might be best to ask the man himself, pinging @OkijinGames. He did write this about it though:
  3. Antriel

    How much faster is phaser3?

    On WebGL, unless the engine does something really silly, it mostly comes down to fillrate (amount of pixels you push), and amount of data the CPU needs to prepare. That depends on the rendering pipeline. Usually it's much more worth it to send a lot of data, so it is flexible. The synthetic benchmarks that just try to spawn as much as possible don't really tell much about real-world performance. In either case, here's example from phaser that uses special object optimized for performance (doesn't send as much data to the gpu, but can't rotate/scale the objects). For me it doesn't slow down at all at 20k. http://labs.phaser.io/view.html?src=src\game objects\blitter\benchmark test 3.js I don't have experience with pixi, but knowing how Phaser 3 works, I would be quite surprised if pixi was substantially faster in anything. I would expect them to be similar, or pixi slightly worse. Of course Phaser being a whole game framework, there is some extra overhead, but definitely nothing that could cause problems.
  4. Antriel

    Phaser 3 - synchronisation with server

    Personally I handle logic separate from Phaser, using it just for the rendering. What I use is a combination of update and my own setTimeout to move the game logic forward and send inputs to the server. Basically this, except I have 2 entry points (both RAF, i.e. Phaser's update, and my own timer). On top of that is interpolation of other entities, prediction of player's entity and syncing time with the server.
  5. It's a way to have refresh rate of something locked to signals from something else. I use it to sync clients time with server network tick.
  6. That stackexchange answer is quite close to phase-locked loop I describe here: https://antriel.com/post/online-platformer-5/.
  7. Antriel

    Objects might fall through despite of collision

    You can increase the `fps` parameter of Arcade in game config.
  8. Antriel

    So, what's the deal with sound?

    See how phaser does it: Checking on init: https://github.com/photonstorm/phaser/blob/476a31093ad5b1d723392720401be83541878b04/src/sound/webaudio/WebAudioSoundManager.js#L76 And subsequent waiting for input to unlock: https://github.com/photonstorm/phaser/blob/476a31093ad5b1d723392720401be83541878b04/src/sound/webaudio/WebAudioSoundManager.js#L143
  9. Antriel

    So, what's the deal with sound?

    https://developers.google.com/web/updates/2017/09/autoplay-policy-changes Basically you need to start/unlock the audio on user input first, then it works at any time. I handle that by making user start the game via click after the preloader.
  10. 50 Hz is normal. Try doing the setInterval that just logs the time too, with something like 10 ms interval. If that fires around the problematic message, with +-10ms interval, then event loop isn't too busy. Also, is there a visible missing date? Like before there's delta of 0, is there delta of 100? If not then it really feels like the message callback is ran more than it should (which you can determine by the contents of the message).
  11. Then it's either what @mattstyles said, or your event loop is too busy and can't process the message fast enough – that might show in profiling. I would try to simply log `Date.now()` on arrival of messages and maybe also run another timeout with much smaller timestep than what server sends, logging the time too, to visualize whether event loop is free or not.
  12. The packet drops along the way, you can't test for that like that. You could try doing it on a good LAN connection (that you tested) or a localhost loopback, which shouldn't drop packets at all.
  13. Unfortunately, not with TCP. And the only way to do UDP on the web is via WebRTC, which is aimed at media and p2p networking, so achieving client-server architecture there is difficult.
  14. Websockets use TCP under the hood. If a packet drops along the way, TCP will buffer any additional packets until it also receives the one it lost. After it does, it will supply everything it has, which can cause what you see. There is nothing you can do to prevent that apart from using multiple websocket connections and implementing something like udp over tcp.
  15. Antriel

    Is there a problem with phaser time

    Yeah. Basically if you needed de/acceleration, you would adjust speed by using the `dt`. Which won't work well unless you use fixed delta time. Which is what the articles I linked talk about.
  16. Antriel

    Is there a problem with phaser time

    Phaser smooths out the delta time (see source) so that the gameplay is better. That's what causes the desync with real time. If you need precise timing, you need to run your own clock. Keep in mind internal things like tweens will still use Phaser's clock. If that's an issue, either tween manually or hack Phaser to pass unsmoothed deltaTime. The issue you see on the android device could be cause by JIT/startup causing slower performance at the beginning, which results in big delta time, which Phaser in turns lowers into sensible values. So a second passes, but Phaser only simulated half a second. Also keep in mind that your fix approach won't really work well on devices with different frame rates. It's not always 60 fps. I recommend reading Fix Your Timestep and if you plan on having custom physics read Integration Basics (`x += velocity * dt` is ok, but if `velocity` depends on delta too, better read it).
  17. Antriel

    Be Careful with GameDistribution

    Given that mine is also changed and changed between today and yesterday, I would assume the issue is purely internal. The values looked pretty legit, so I'm quite certain it's not a hack, just some very dumb programming.
  18. There isn't `current_time` ever used there, it's just used to describe the principle. If you look at it properly you see it also subtracts time from the current time.
  19. Essentially yes. It's all nicely explained in my blog too.
  20. No, in a way it's `Date.now()`. Or some number that's relative to that and the server's time. E.g. I simply start counting time when first message arrives and I know what rate to expect, so I know what timestamp the other messages have. Imagine starting a stopwatch when first message comes and timing your whole game based on that.
  21. `current_time` is simply the time that is now. If server sends you `{x: 100, time: 0}` and then `{x: 200, time: 100}`, and your current time is 50, you interpolate x to be 150. Of course it's a bit more complex as you need to keep that time relative to what server is sending out. And interpolate a bit in the past to cover delayed messages. So server sends you e.g. 4 positions, you start showing the first, second... meanwhile you get 5th, 6th... etc.
  22. I explained exactly why this happens in your other topic, with a solution and a link to my blog post where I go deeper into details regarding that issue. If something wasn't clear, maybe ask a question rather than make a new topic.
  23. Instead of `timeElapsed = 0`, it should be `timeElapsed -= updateRate`.
  24. Seems like you are removing 2 items from the buffer while only adding 1 every update tick. When you are lerping 1-2, and 3 comes, you start lerping 2-3, so you should only remove 1. Also this way you will get a bit jittery movement, because if the `lerpPerc > 1`, you are actually discarding the remainder. You would need to roll it off otherwise the position will seemingly go back in time. But to achieve smoothness in that, you need bigger interpolation period than one update tick. Packets can get delayed. You need to keep your time in sync with server and have big enough buffer to accommodate delays. Extrapolating if needed (which can look weird when entities penetrate walls in physics based games) or stop the entity (which can feel jittery), depends on the game. Furthermore, Phaser smooths out deltaTime, so the value is widely different from actual deltaTime. For best results you would need to use the real time in calculating this. And if it's a game with long gameplays, it might be a good idea to keep in mind that timers aren't perfect and your client's clock can go faster/slower than server's clock. See https://antriel.com/post/online-platformer-5/ for my approach.
  25. Hi, Apart from game licenses (see below) I'm also interested in paid programming work. I use predominantly Haxe, but I can adapt as needed. These days I use Phaser 3 to make my games. You can contact me here or at contact[at]nextrealmgames.com. All games are fully responsive. I can offer reskins (if art is provided), API implementation, branding and required changes. I'm selling non-exclusive licenses for the following games: Tap Tap Plane Traditional flappy bird remake. Spot The Spot Simple and fast reflex game with infinite upgrades. This first post will be updated with additional games as they become available.