// Draw truck(s) 

void setup() { // all sketch setup goes here
   size(400, 400);
   smooth();
   background(255);
   } // setup()

void draw() {
   fill(255, 0, 0);
   ellipse(width/2, height/2, 100, 100);
   } // draw()

void mousePressed() {
   noStroke();
   fill(random(80, 220));
   truck(mouseX, mouseY, random(50, 120));
   } // mousePressed()

void truck(float x, float y, float w) {
   //rect(x, y-h, w, h);
   float h;
   
   h = w/2;
   
   // draw body of truck
   beginShape();
   vertex(x, y-0.1*h);
   vertex(x, y-h);
   vertex(x+0.6*w, y-h);
   vertex(x+0.75*w, y-0.5*h);
   vertex(x+w, y-0.5*h);
   vertex(x+w, y-0.1*h);
   endShape(CLOSE);
   
   // draw the driver's window
   fill(255);
   triangle(x+0.6*w, y-0.95*h, x+0.6*w, y-0.5*h, x+0.7*w, y-0.5*h);
   
   // Draw the wheels
   fill(0);
   ellipse(x+0.25*w, y-0.1*h, 0.2*h, 0.2*h);
   ellipse(x+0.75*w, y-0.1*h, 0.2*h, 0.2*h);
   } // truck()