How do you create "smooth" movement in Scratch?

Hinderwoods

I'm talking about movement that looks natural and not robotic.

jamy_hensley

You need more costumes.

Prscr

Hinderwoods wrote:
I'm talking about movement that looks natural and not robotic.

Use this block:

ScratchSomebodyIDKthisIsReallyPrscrLOL wrote:
glide (1) secs to x: (0) y: (0)

Last edited by Prscr (April 4, 2016 03:41:09)

zp100

What do you mean? Moving across the Stage? You can use this block:

glide (1) secs to x: (0) y: (0)

or this script:

set rotation style [don't rotate v]
point towards [sprite v]
repeat until <touching [sprite v] ?>
    move (3) steps
end
set rotation style [all around v]

to accomplish smooth gliding.

Or, do you mean walking movements? If you're using these blocks:

when [right arrow v] key pressed
move (5) steps

when [left arrow v] key pressed
move (-5) steps

then it can look pretty weird. To fix this, use this script:

when green flag clicked
forever
    if <key [right arrow v] pressed?> then
        move (4) steps
    end
    if <key [left arrow v] pressed?> then
        move (-4) steps
    end
end

Hope this help!

gtoal

Hinderwoods wrote:
I'm talking about movement that looks natural and not robotic.

When you start moving, don't jump straight to the target speed - start at 0 and ramp the speed up.

When you stop, decelerate rather than stopping dead. You might even want to overshoot a tiny bit and bounce back to the final position (for example the second hand of a watch might do this)

It's all about modelling expectations and usually that comes from modelling the physics involved since people are familiar with how real objects move.

If you're following a path, don't turn corners sharply - fit some sort of spline to your path and follow the spline with constant linear velocity.

Keep the derivative of the speed smooth.

G

Hinderwoods

gtoal wrote:
Hinderwoods wrote:
I'm talking about movement that looks natural and not robotic.

When you start moving, don't jump straight to the target speed - start at 0 and ramp the speed up.

When you stop, decelerate rather than stopping dead. You might even want to overshoot a tiny bit and bounce back to the final position (for example the second hand of a watch might do this)

It's all about modelling expectations and usually that comes from modelling the physics involved since people are familiar with how real objects move.

If you're following a path, don't turn corners sharply - fit some sort of spline to your path and follow the spline with constant linear velocity.

Keep the derivative of the speed smooth.

G

Thank you

nickwasp

if you want a sort of momentum effect you can use this

when green flag clicked
forever
    
if <key [right v] pressed?> then
change [Xv v] by (1)
    
end
if <key [left v] pressed?> then
    

change [Xv v] by (-1)
end
set[Xv v]to((Xv)*(0.8)//any number less then 1 will work
end

Hinderwoods

nickwasp wrote:

if you want a sort of momentum effect you can use this

when green flag clicked
forever
    
if <key [right v] pressed?> then
change [Xv v] by (1)
    
end
if <key [left v] pressed?> then
    

change [Xv v] by (-1)
end
set[Xv v]to((Xv)*(0.8)//any number less then 1 will work
end

Ok

zp100

Oh! That kind of movement. Check out this tutorial for realistic jumping and acceleration, along with everything else for character movement.

raineoden

Are you talking about platforming? cuz then you can do it by the post above me by @Hinderwoods!

when green flag clicked
forever
    
(imagine)
(program)
(share)

end

Hinderwoods

zp100 wrote:
Oh! That kind of movement. Check out this tutorial for realistic jumping and acceleration, along with everything else for character movement.

Thank you!

Vinny_0

Try

when green flag clicked

forever
    
if <key [ D] pressed?> then
    
repeat until <not <key [ D] pressed?>>
    
change x by (5)
end

end

end

Last edited by Vinny_0 (April 6, 2016 00:18:38)

Hinderwoods

Vinny_0 wrote:

Try

when green flag clicked

forever
    
if <key [ D] pressed?> then
    
repeat until <not <key [ D] pressed?>>
    
change x by (5)
end

end

end

This isn't smooth, but thanks for the help anyway.

ethanbros

Hinderwoods wrote:
I'm talking about movement that looks natural and not robotic.

If you want a sliding sprite that goes slower as it gets closer to a point, try this:

define slide to x: (x) y: (y) with division of (divide)
repeat until <<(round (x position)) = (x)> and <(round (y position)) = (y)>>
    change x by (((x) - (x position)) / (divide))
    change y by (((y) - (y position)) / (divide))
end
go to x: (x) y: (y)

If you want to make it simply glide to a position at a constant speed, just use this block.

glide (1) secs to x: (0) y: (0)

If you want to make, let's say, controls for a top-down game, use this:

when green flag clicked
forever
 . . .
 if <key [up arrow v] pressed?>
  change y by (5)
 end
 if <key [down arrow v] pressed?>
  change y by (-5)
 end
 if <key [left arrow v] pressed?>
  change x by (-5)
 end
 if <key [right arrow v] pressed?>
  change x by (5)
 end
 . . .
end

That's all I can tell you.

MCSniper

use these frames for talking when smooth

Last edited by MCSniper (Aug. 21, 2016 23:37:47)

JavierR100

Smooth moving? Where?
Heres is, only with 3 operators blocks (on each command block inputs).

when green flag clicked
forever
go to x: (((mouse x) / (2)) + ((x position) / (2))) y: (((mouse y) / (2)) + ((y position) / (2)))
else
say [Hope this works!]
end

Harakou

MCSniper wrote:

use these frames for talking when smooth

Please make sure that your posts are on topic.

Closing this thread since it's quite old.

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