[Arcade] body / velocity messed up by update to new Phaser version

[s4m_ur4i]

I just upgraded to Phaser 2.9.3, since then I get a strange behavior.

1. I press Left / Right to change the Sprite's velocity (x). // See update method
2. Sprite has enabled Physics, World.gravity is 2000 // See in create method
3. But the Sprite instead of moving left (negative velocity.x) moves upwards // See attached gif

What I figured out till yet:
- velocity.y turn to NaN by colliding with a collisionGroup .
- velocity.y stays NaN, even if the character moves into the air. (whyever it moves into air..)

There is nothing else going on.
I tested this as a test-case, not inside my game, to be sure I'm not messing something up.

create method:
 

super(state.game, x, y, 'minions');
this.level = state;
this.anchor.setTo(0.5);
this.game.physics.arcade.enable(this);
this.game.add.existing(this);
this.body.bounce.set(0.5);
this.body.setSize(45, 110, 80, 45)

update method:

if(this.controls.on("left")) {
  this.body.velocity.x = -500;
  this.animations.play('walk');
} else if(this.controls.on("right")) {
  this.body.velocity.x = 500;
  this.animations.play('walk');
}

Anyone have a clue why this happens?

Thanks in advance.

[samme]

Can you post an example? https://codepen.io/samme/pen/vyKJvw

 

And did you update from v2.9.2 or from an earlier version?

[s4m_ur4i]

Hi,

thanks for looking into this. Here's the pen:

It's reproducible. (use left / right arrow keys). Seems like velocity x isn't just velocity x.
I upgraded from 2.6.2

regards

[samme]

Change 

n.body.gravity = 0;

to

n.body.gravity.y = 0;
// OR
n.body.allowGravity = false;

 

[s4m_ur4i]

You are right.
Thanks for the solution and shame on me for overseeing it.

I did not know that setting the property on the collision sprites had such an impact.

Thanks a lot!

Issue solved.