Sin frequency easing problem? };

Help
, ,
1

Godot Version

4.2

Question

I want to ease transition a sin frequency from 50.0 to 0.75

public override void _Process(double delta)
{
time += (float)delta;

	MoveX(delta);
	Shake();
}

void Shake(){
if(frequencyY > 1)
frequencyY -= 1;
}

void OnClickButton(){
frequencyY = 500;
//I tried using tween here as well
}

public void MoveX(double delta){

	Godot.Vector2 pos = new(0,0);

	var s = Mathf.Sin(time * frequencyY + index) * amplitudeY + offsetY;
	var c = Mathf.Cos(time * frequencyX + index) * amplitudeX + offsetX;


	pos.Y = s;
	pos.X = c;
	
	node2D.Position = pos;

}

This makes a canvas item move from left to right and up and down using sin and cos. I attached a button on it to increase the frequency to 500. Then the process reduces the frequency over time. Right now the canvas item shakes at the button press; however, the object slows down randomly. I just want it to shake really fast then slow down. I have tried using tween, a trauma slider, and I tried taking out *time and replacing it with a constant rate. Anyone got any clue to make this work?

2

Could be because you aren’t decreasing the frequency by delta time, so it’s a frame-dependent effect?

Try

public override void _Process(double delta)
{
    time += (float)delta;
    if (frequency > 1) {
        frequencyY -= (float)delta;
    }
    MoveX(delta);
}

I’d recommend giving Tweens another try though.