int y = 30;

void setup() {
  size(512,768);
  background(183, 51, 44);

}

void keyPressed() {
  background(183, 51, 44);
  y = 30;

}

void draw() {
  background(183, 51, 44);
  y += 4;

  triangle(230, y,    282, y,    width/2, y+70);
  triangle(200, y-20, 230, y-20, width/2, y+70);
  triangle(312, y-20, 282, y-20, width/2, y+70);
}