Camera shaking

[damian-pastorini]

Version

• Phaser Version: 3.70 and 3.80 but probably earlier.
• Operating system:
  Any (I'm on Windows)
• Browser:
  Any (Firefox, Chrome and Opera)

Description

• If I set the camera to exact follow the player movement 1:1, the player animation looks ok, but the background jitter.
• If I set the camera with a lerp (0.2, 0.2) to make the camera movement slower, the background works fine but the player animation jitter.
  I've added more notes and uploaded a few videos in Discord: https://discord.com/channels/244245946873937922/416623653741133837/1230053213453942855

Example Test Code

The issue is visible in the current examples:

• https://labs.phaser.io/view.html?src=src%5Ccamera%5Cfollow%20user%20controlled%20sprite.js
• https://labs.phaser.io/view.html?src=src/tilemap\tests\visual%20culling%20check.js

Additional Information

The issue happens in both ways depending what the camera follows, with the background or the player.

Coming from #5018 (comment)

[ncoop720]

I am also experiencing this issue and it is driving me insane. It only seems to happen when when trying to implement a fixed time step for multiplayer games when the monitor refresh (165hz) rate doesn't match the fixed time step (60 fps):

update(_time: number, delta: number): void {
    if (!this.currentPlayer || this.paused) return

    this.elapsedTime += delta
    while (this.elapsedTime >= FIXED_TIME_STEP) {
      this.elapsedTime -= FIXED_TIME_STEP
      this.fixedTick()
    }  
  }

Using direct movement rather than physics movement.

[0x5e5e]

seems to be fixed in https://github.com/phaserjs/phaser/releases/tag/v3.85.0-beta.2 @ncoop720