Gdevelop - How do I make an object move in a arc movement from a X start pos, Y start pos to maxX pos, maxY pos in a maximum Y position high

[ErthCat]

How do I move an object in a arc movement, im trying to make this arc move without physics (if possible), there I made an ilustration with example values on it, remembering that the Y start position sometimes isn’t the same as the end Y position:

[Levio]

Hi! This other post might help:

How do I move an object to a position in an arc?

Im pretty sure i solved it, i just made it so that the player has forces towards the x position of the point and the y position with a tweening variable added to it that comes from the distance between the player and the point (it so like if the distance is 150 it’d tween from 150 to 0 in (length variable) seconds. When it reaches the point box it just tweens to the point to lock it in, also the box scales up depending on the speed so the player isn’t likely to skip over it. [Screenshot 2025-1…

[Drona]

Hi,

for another solution you need the lerp-function and some math for calculating the parabola.
For your given values, the events can look like this:

First, you need an object variable t, which will be the interpolation factor in the lerp function. In this case it will be TimeDelta().

For the x position: lerp takes three values, in your case (1) start x-position, (2) end x-position and the third value is the interpolation factor which is for you (3) the object variable t (“ball.t”).

For the y position you do the same: lerp(y-start position; y-end position; ball.t).

This would move the object in a straight line but you want a parabola. For a symmetric parabola, you can use this formula:
4 * ArcHeight * ball.t * (1 - ball.t)

Combine both and you get a symmetric parabola movement:
lerp(y-startPoint, y-endPoint, ball.t) - (4 * ArcHeight * ball.t * (1 - ball.t))

You can change the ArcHeight value as you like and if the y-start or endPoint changes, you need to store it in a variable and put this in the formula instead of hardcoding the values.

If you want to change the time scale you can divide TimeDelta() by a different value than 2.

Disclaimer: I wish I would be skilled enough to come up with stuff like this myself, but the parabola formula and adding to t TimeDelta() / 2 is from ChatGPT.

[ZeroX4]

Arc or more like angle is -45 find your angle

2 is how strong push will be i set it to 5 and it went way too fast
So use decimals
I think something like 3.1 or 2.5 will better for you but that is something you need to trail and error

Hit space

gd.games game build

[ErthCat]

Sorry for the long wait, I’ve been working in other stuff in my project, I didn’t expect the response that fast lol, the code kinda work but need some adjustments, I’ll try to fix it on chat gpt as well, thanks for the help.

[ErthCat]

Nvm your code actually worked, I just miss coded so it didn’t work, but btw thank you man