float x=0;
 float y=0;
 
 float color1=0;
 float color2=0;
 float color3=0;
 
float velocity_x=7;
float velocity_y=3;

float x_length = 800;
float y_length = 800;

float diameterc = 150;

float x_left_bound;
float x_right_bound;

float y_upper_bound;
float y_lower_bound; 

float diameter_increase;

void setup() { 

 size(800,800);

  
}

void draw() {
  
   
  background(125,125,125);

 fill(color1,color2,color3);
 
x_left_bound = diameterc/2;
x_right_bound = x_length-(diameterc/2);

y_upper_bound = diameterc/2;
y_lower_bound = y_length-(diameterc/2);
 
 
  if ((x &rt; (x_right_bound-(velocity_x/2))) && (x < (x_right_bound+(velocity_x/2)))) {
    
    velocity_x=velocity_x*-1;
  
  }
  
  else if ((velocity_x < 0) && (x < (x_left_bound-(velocity_x/2))) && (x &rt; (x_left_bound+(velocity_x/2))))
  

  {
    
    velocity_x=velocity_x*-1;
   
    
     
  }
  

 if ((y &rt; (y_lower_bound-(velocity_y/2))) && (y < (y_lower_bound+(velocity_y/2)))) {
    
    velocity_y=velocity_y*-1;
   

  }
  
  else if ((velocity_y < 0) && (y < (y_upper_bound-(velocity_y/2))) && (y &rt; (y_upper_bound+(velocity_y/2))))  {
    
    velocity_y=velocity_y*-1;
    

    
   
    
  }
 

  if(keyPressed) {
    if (key == 'r' || key == 'R') {
velocity_y=velocity_y*-1;
velocity_x=velocity_x*-1;

}}

 if(keyPressed) {
    if (key == 'f' || key == 'F') {
velocity_y=velocity_y*1.1;
velocity_x=velocity_x*1.1;

}
  }
  
  if(keyPressed) {
    if (key == 's' || key == 'S') {
velocity_y=velocity_y*.9;
velocity_x=velocity_x*.9;

}
  }
 
 
  x=velocity_x+x;
  y=velocity_y+y;
  
  
  if(keyPressed) {
    
    if (key == 'u' || key == 'U') {
y = velocity_y+y-10;
} 
  }
 
  if (keyPressed) {
  
     
  if  (key == 'd' || key == 'D') {
y = velocity_y+y+10;
}
}
  
  ellipse(x,y,diameterc, diameterc);
  
if ((mouseX <= (x+(diameterc/2))) && (mouseX &rt;=(x-(diameterc/2))) && (mouseY &rt;= (y-(diameterc/2))) && (mouseY <= (y+(diameterc/2)))) { 

  

  
if (mousePressed==true) {

  color1 = random(255);
    color2 = random(255);
    color3 = random(255);
   
}  
}
}