stage.set_background_color("limegreen")
stage.disable_all_walls()
road = codesters.Rectangle(0,0,400,500,"dimgray")
##capitalized U
speed_text = codesters.Text("Press Up to Speed Up!!",0,0,"blue")
score_text = codesters.Text("Score:\n0",150,220,"blue")

player = codesters.Sprite("car1",0,-200)
player.set_size(.5)

trees = []
obstacles = []

speed = -5
score = 0
game_over = False

def create_scenery():
    for row in range(10):
        tree_num = random.randint(1,7)
        side = random.choice([-1,1])
        tree = codesters.Sprite("pinetree{}".format(tree_num),230*side,200-row*50)
        tree.set_size(.3)
        trees.append(tree)
    for tree in trees:
        tree.set_y_speed(speed)
create_scenery()

def speed_up():
    global speed
    if speed > -15:
        speed -= 1
    if speed < -8:
        speed_text.hide()
stage.event_key("up",speed_up)

def brake():
    global speed
    if speed > -4:
        speed += 1
    if speed >= -8:
        speed_text.show()
stage.event_key("down",brake)

def left():
    player.move_left(20)
stage.event_key("left",left)

def right():
    player.move_right(20)
stage.event_key("right",right)

def create_obstacle():
    image = random.choice(["car2","pollution"])
    sprite = codesters.Sprite(image,random.randint(-180,180),350)
    sprite.set_size(.5)
    if image == "car2":
        sprite.set_rotation(180)
        sprite.set_y_speed(-5+speed)

    else:
        sprite.set_y_speed(speed)
    obstacles.append(sprite)

def collision(player, hit_sprite):
    global speed, game_over
    if hit_sprite in obstacles or hit_sprite in trees:
        speed = 0
        game_over = True
        speed_text.show()
        speed_text.set_text("Game Over")
        player.set_y_speed(-5)
        player.turn_left(1000)
player.event_collision(collision)

def update():
    global score
    if speed < -8:
        score += abs(speed+7)
        score_text.set_text("Score:\n{}".format(score))
    for tree in trees:
        tree.set_y_speed(speed)
        if tree.get_y() < -300:
            tree.set_y(300)
    for obs in obstacles:
        if obs.get_image_name() == "car2":
            obs.set_y_speed(-5+speed)
        else:
            obs.set_y_speed(speed)
        if obs.get_y() < -300:
            obstacles.remove(obs)
stage.event_interval(update,.1)

def main():
    while not game_over:
        create_obstacle()
        stage.wait(random.uniform(.1,1.5))
main()