How do I create a descending radius of action ?

Hello,

I am working on a Flight Control-like system where a planewould follow a line that has just been drawn

[attachment=1:ujwf5ltq][/attachment:ujwf5ltq]

I wonder if it is possible to make this circle shrinking as the plane is moving forward ? And the circle would be equal to 0 when the plane has reached the end of the line.

Is it possible to do this with construct 2 ? How would you do this ?

regards and thanks for your help

Mogador

Does anyone has an advice to give ?

Yes, You would have to find the distance of the line drawn by the player and the distance traveled by the player, from the start of the line

Then you'd do;

CircleMaxSize - CircleMaxSize * (PlaneDistanceTravelled/SizeofLine)

Whiteclaws has the answer, though I like to use lerp to simplify the code. Same thing as Whiteclaws' answer, in a different format. Set the circle size to:

lerp(CircleMaxSize, 0, PlaneDistanceTraveled/SizeOfLine)[/code:2et1ixuy]

Basically we are saying, start circle out at CircleMaxSize, end circle at 0, as PlaneDistanceTraveled/SizeOfLine goes from 0 to 1.

Thanks,

I understand it, but how do I get the distance of the line drawn by the player ?

I don't get it as it is a curve

Mogador

you can get an approximate distance by picking all dashes associated with that plane (Dash Plane = Spitfire.UID) and multiplying the picked count by 20

the distance would then be Dash.PickedCount*20

It works fine, thank you