Moving....stuff!

[WahWah]

Hello!

I am very new to lua and i just want to know how i can get an object to move a designated length
instead of teleporting instantly
For example when jumping.
I just want to tap w for example and i want the player to move up a specific length smoothly.

[veethree]

Here's a recent thread about jumping. For future reference please search the forums and/or wiki before posting

[Sheepolution]

So you can do this:

Code: Select all

x-position = 400

That's teleporting.
But what you want to do is this:

Code: Select all

x-position = x-position + speed

And I can recommend you to use dt (deltatime).
So in the end you get something like this:

Code: Select all

function love.main()
image = newImage("image")
x = 10
y = 200
speed = 100
end

function love.update(dt)
x = x + speed * dt
end

function love.draw()
love.graphics.draw(image,x,y)
end

[WahWah]

So you can do this:

Code: Select all

x-position = 400

That's teleporting.
But what you want to do is this:

Code: Select all

x-position = x-position + speed

And I can recommend you to use dt (deltatime).
So in the end you get something like this:

Code: Select all

function love.main()
image = newImage("image")
x = 10
y = 200
speed = 100
end

function love.update(dt)
x = x + speed * dt
end

function love.draw()
love.graphics.draw(image,x,y)
end

Yeah. I already know that
What i mean is that i want to move a desired amount of pixels and then stop.
Thanks anyway

[micha]

Yeah. I already know that
What i mean is that i want to move a desired amount of pixels and then stop.
Thanks anyway

Is it for jumping or for smooth movement?
If you want to implement jumping, then you do it just like Sheepolution suggested and in each timestep do

Code: Select all

velocity.y = velocity.y + gravity * dt

That way the object will have a highest point and fall back down.

If you just want smooth movement you need two pairs of coordinates: target-coordinates and actual-coordinates. The actual-coordinates are the ones, where you draw the object and the target-coordinates are the ones, where the object should move. Each timestep move the actual-coordinates towards the target-coordinates (it's called tweening).

[WahWah]

Yeah. I already know that
What i mean is that i want to move a desired amount of pixels and then stop.
Thanks anyway

Is it for jumping or for smooth movement?
If you want to implement jumping, then you do it just like Sheepolution suggested and in each timestep do

Code: Select all

velocity.y = velocity.y + gravity * dt

That way the object will have a highest point and fall back down.

If you just want smooth movement you need two pairs of coordinates: target-coordinates and actual-coordinates. The actual-coordinates are the ones, where you draw the object and the target-coordinates are the ones, where the object should move. Each timestep move the actual-coordinates towards the target-coordinates (it's called tweening).

Oh... I get it now
Thanks