/* moving_a_rectangle.pde
   Written by Susan Evans
   
   Change the horizontal position of a rectangle
   using the left and right arrows on the keyboard.
*/

int x = 215;        // position of the rectangle

void setup() {
  size(480,120);
}

void draw() {
  background(0);        // color over previous frames
  rect(x,45,50,50);     // draw rectangle at position x
  
  if(keyPressed) {      // if a key was pressed
    if(key == CODED) {  // if the key was non-ASCII
      if(keyCode == LEFT) {
        x = x - 1;      // move rectangle to the left
      }
      if(keyCode == RIGHT) {
        x = x + 1;      // move rectangle to the right
      }
    }
  }
}