Pointer lock mouse lag

[ra_rasmus]

I’m working on an FPS and have run into a weird mouselook issue.

I listen to pc.EVENT_MOUSEDOWN and use this.app.mouse.enablePointerLock() to lock and hide the mouse. Then I listen to pc.EVENT_MOUSEMOVE for moving the player’s view using e.dx and e.dy. I believe that’s just how you do it, right? And it seems to work great.

For the most part… I’m not sure I can explain it well, nor that my observation is entirely correct. It seems like the first time I launch the game and click on the screen to engage pointer-lock, everything is nice and smooth. As smooth and responsive as the browser delivers pc.EVENT_MOUSEMOVE at 60 frames per second, anyway. But if I stop pointer lock by pressing ESC and click on it to engage pointer lock once more, it seems the mouse is lagging a bit behind. Like there’s a delay before the events that move the camera are fired…

Is this perhaps a known browser thing? IIRC I may have read something like that somewhere…?

[Leonidas]

Hi @ra_rasmus,

I don’t have experience with that, but it does remind me of this post:

Mouse movement jumps at 144 hertz

With a 144 hertz monitor, jumps sometimes occur when moving the mouse. I copied the project to add the log: https://playcanvas.com/editor/scene/1491768 [image] Here’s what it shows when move the mouse: [image] At 60 hertz this does not happen. My guess is that this seems to happen when the locked mouse cursor reaches the edge of the screen and the engine flips it to the opposite side of the screen. At this time, the cursor lags at 144 hertz. Perhaps the implementation of this functionalit…

[ra_rasmus]

Yeah sounds like a different issue. Still interesting, tho. I guess it might be prudent to calculate the delta positions manually - if they are actually valid in that case