i must give the illusion of lobbing a grenade by changing sizes thought its lifetime, (top down game)

basically, it starts off at 75%, grows to 200% at the midpoint, then shrinks to 75% when it reaches its destination.

the speed at witch it does this will be dependent on the distance from the player to the destination, with it reaching 200% at the middle of its travel distance

how do i do this

i also have code that keeps it at consistent speed no matter the travel time if that has any use

This should work:

forever
set size to (((-2.5) * ([abs v] of ((percentDistance) - (50)))) + (200)) %
end

Here's a graph on what it should do to the size based on distance:


You can get your percent distance by dividing the total distance by the current amount traveled and multiplying by 100:

set [percentDistance v] to (((totalDistance) / (traveledDistance)) * (100))

=

 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
      
      
      
      
      
      
      

how would i get the traveled distance and the total distance, my aforementioned consistent speed code just gives how much time to travel for

also would it be possible for it to ease in and out of its peak, not necessary but it would be nice

easing would probaably require sine like this:

set size to (([sine v] of ((percent traveled) / (length of curve)) x (height of curve)) %

note odd look is scratchblocks issue

how would you go about getting that sine block

rendered_fox1 wrote:

how would you go about getting that sine block

It's at the end of the operators section:

([abs v] of ()) // click on the dropdown and select "sin"

Ok got it, but i still dont know how to get the values i need for the variables

rendered_fox1 wrote:

Ok got it, but i still dont know how to get the values i need for the variables

I believe you want the grenade to move like this; the grenade goes fast first, then slows down when reaching the peak, and goes down fast. So, a curve like this:


Referring to the OP:

rendered_fox1 wrote:

it starts off at 75%, grows to 200% at the midpoint, then shrinks to 75% when it reaches its destination.

…The values will be something like this:

set size to ((([sin v] of (((distance travelled::#6f6f6f) * (90)) / (total distance::#6f6f6f))) * (125)) + (75)) %

// 125 is 200 - 75
// the value inside the sin block goes from 0 to 90 corresponding to the distance travelled
// you can substitute the gray values with variables or numerical values.

ok thanks, now how do i get the values for total distance and distance traveled

Vaibhs11 wrote:

rendered_fox1 wrote:

Ok got it, but i still dont know how to get the values i need for the variables

I believe you want the grenade to move like this; the grenade goes fast first, then slows down when reaching the peak, and goes down fast. So, a curve like this:


Referring to the OP:

rendered_fox1 wrote:

it starts off at 75%, grows to 200% at the midpoint, then shrinks to 75% when it reaches its destination.

…The values will be something like this:

set size to ((([sin v] of (((distance travelled::#6f6f6f) * (90)) / (total distance::#6f6f6f))) * (125)) + (75)) %

// 125 is 200 - 75
// the value inside the sin block goes from 0 to 90 corresponding to the distance travelled
// you can substitute the gray values with variables or numerical values.

dosent work
it wont change size at all, all the blocks are connected and everything

This is how it's supposed to work: https://scratch.mit.edu/projects/992395934/
There's a slight correction on the formula, the ‘90’ there is supposed to be ‘180’.

I'm sure you could figure it out by looking at the project.
Else, please share the project and post the link.