Hi,
I am trying to transscript Daniel Shiffman’s Code for Fourier Series to be processing-readable.
Fourier Series | The coding train
I am beginner and managed to get this far until i got quite a bit lost; line 34 (wave.push(y2) ) gives me an error "
Cannot invoke push(float) on the array type float "
I couldn’t find any information on the internet, thus i am asking you, if anyone could help me out 
float radius;
float time;
float x;
float y;
float x2;
float y2;
float wave[];
int i ;
void setup() {
size(800, 800);
radius = 100;
x = width/2;
y= height/2;
x2 = x;
y2 = y;
}
void draw() {
time += 0.05;
background(0);
fill(255);
noStroke();
stroke(255);
noFill();
ellipse(x-200, y, radius *2, radius*2);
wave.push(y2);
pushMatrix();
translate(x-200, y);
x2 = radius * cos(time);
y2 = radius * sin(time);
fill(255);
line(0, 0, x2, y2);
ellipse(x2, y2, 8, 8);
popMatrix();
for ( int i = 0; i < wave.length; i++) {
point(i, wave[i]);
}
}