如何在不改变方向的情况下更改Phaser中对象的速度

Question

How do you change the speed of an object in phaser without changing its direction? For example, I have a ball that collides against a moving platform. I want the ball to change direction, but not gain any additional speed from the collision against a moving side of the platform. Up to now I have had to take the sign of the velocities of the object and then reapply a constant value speed to it on collision, but that seems quite wrong for a library as robust as Phaser is.

How do you modify speed and direction independently outside of velocity?

Answer 1

I've been using bounce to get that sort of effect in my games. Try using ball.body.bounce.set(1); .

From the docs :

The elasticitiy of the Body when colliding. bounce.x/y = 1 means full rebound, bounce.x/y = 0.5 means 50% rebound velocity.