enemy_x = 350
enemy_y = 100
width = 500
height = 400
enemy_speed_x = 5
enemy_speed_y = 7

def setup():
	global bg
	global player
	global food
	global enemy
	size(width, height)
	textSize(20)
	bg = loadImage("mountains.jpg")
	player = loadImage("player.png")
	food = loadImage("apple.png")
	enemy = loadImage("robot.png")


def draw():
	global enemy_x
	global enemy_y
	global enemy_speed_x
    global enemy_speed_y
	enemy_x = enemy_x + enemy_speed_x
	enemy_y = enemy_y + enemy_speed_y
	enemy_speed_x = -enemy_speed_x
	enemy_speed_y = -enemy_speed_y
	image(bg, 0, 0)
	image(player, 50, 100)
	image(food, 300, 200)
	image(enemy, enemy_x, enemy_y)