// move the lightning bolt horizontally

//declare some variables first
float y = 20;
float x = 10;
int xDir = 1;

//setup function 
void setup() {
  size(400,200);
}

//draw function where the action happens
void draw() {
  background(0);
  smooth();
  noStroke();
  fill(250,230,5);
  beginShape();
  vertex(x,y);
  vertex(x,y+50);
  vertex(x+10,y+40);
  vertex(x,y+100);
  vertex(x+10,y+90);
  vertex(x,y+160);
  vertex(x+40,y+65);
  vertex(x+30,y+75);
  vertex(x+40,y+25);
  vertex(x+30,y+35);
  vertex(x+40,y);
  endShape(CLOSE);
  //increment the value of x by 1 each time the program loops through draw()
  x=x+0.5*xDir;
  if (x>width || x<0){
    xDir=xDir*-1;
  }
  
  
}