Logs

Log[] logs = new Log[2];

void setup() {
    size(600,600);
    for (int i = 0; i < logs.length; i ++ ) {
        logs[i] = new Log(300, i, random(1,4));
    }
}

void draw () {
    background(200,255,200);
    for (int i = 0; i < logs.length; i ++ ) {
        logs[i].move();
        logs[i].display(); // display for the cars
  }
}

class Log {

    float logx;
    float logy;
    float logSpeed;

   Log( float logx_, float logy_, float logSpeed_) {
        logx = logx_;
        logy = 335 - 41 * logy_;
        logSpeed = logSpeed_;
    }

    void display() {
        noStroke();
        strokeWeight(1);
        fill(150,100,0);
        rect(logx,logy,200,30);
        ellipse(logx,logy+15,30,30);
        ellipse(logx+200,logy+15,30,30);
        fill(150,100,0);
        ellipse(logx,logy+15,30,30);
        fill(220);
        ellipse(logx,logy+15,20,20);
        fill(0);
        stroke(1);
        line(logx+10,logy+5,logx+210,logy+5);
        line(logx+15,logy+15,logx+214,logy+15);
        line(logx+10,logy+24,logx+210,logy+24);
    }

    void move() {
        logx += logSpeed;
            if (logx-100 > width){
                logx = -200;
        }
    }
}