Decrease velocity

[TheSoftWaffle]

Is there a built-in thing that gradually slows down the object, its linear velocity?

[akopyl]

Usually we call it friction.
Here's a simple way to do it:

Code: Select all

player.xVel = player.xVel * (1 - math.min(player.friction*dt, 1))

[TheSoftWaffle]

Do bodies have xVel?

i tried to do

Code: Select all

ball.fixture:setFriction(10)

but it didn't slow the ball down.

[pgimeno]

See Body:setLinearDamping.

Friction applies to contact between two bodies.

[TheSoftWaffle]

Thanks, will check out
It does that with the y coords too.
Can i do that with only x?
Btw i am new to lua, how can i only get the y value from getLinearVelocity()?

[pgimeno]

Can i do that with only x?

Not with any existing function. You need to implement damping yourself, using e.g. applyForce proportional to current x velocity.

Btw i am new to lua, how can i only get the y value from getLinearVelocity()?

If you absolutely must, you can use select(2, yourbody:getLinearVelocity()).