Tree creator - OpenProcessing

mySketch
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float x, y;
​
void setup(){
  size(500,500,P3D);
  background(50,25,25);
  noStroke(); 
  x = width/2;
  y = height;
}
​
void draw(){
  lights();
  fill(181,101,29);
  translate(x,y)
  box(15);
  
  //controller
  if(keyPressed){
    if (keyCode ==UP){
      //Move the block up
      y-=5;
    }
        if (keyCode ==DOWN){
      //Move the block up
          y+=5;
      
    }
        if (keyCode ==LEFT){
      //Move the block up
          x-=5;
      
    }
        if (keyCode ==RIGHT){
      //Move the block up
          x+=5;
      
    }
    
    if(keyCode == UP || keyCode == DOWN){
      x+= random(-2,2);
    }
        if(keyCode == LEFT || keyCode == RIGHT){
      y+= random(-2,2);
    }
    if(key == ' '){
      spawnLeaf();
    }
    
  }
  
}
​
void spawnLeaf(){
  translate(random(-40,40), random(-40,40));
  fill(20,204,120);
  sphere(10);
}
​