CHECK FOR UNDERSTANDING: Here are a few questions for you to check what you've learned!
- This game is very similar to the one you just made! Click Run and play the game.
- Use the code in the editor to answer the questions.
- Answer the questions by clicking on the correct answer.
- Click Submit and Next to move on.
To navigate the page using the TAB key, first press ESC to exit the code editor.
stage.set_background("space")
stage.disable_all_walls()
instructions = codesters.Text("Use <- and -> to avoid the spikes!", 0, 200, "orange")
ship = codesters.Sprite("ufo", 0, -225)
ship.set_size(.5)
stage.wait(2)
def left_key():
ship.move_left(20)
stage.event_key("left", left_key)
def right_key():
ship.move_right(20)
stage.event_key("right", right_key)
score = 0
spike_interval = 1.5
spike_speed = -4
spike_gap = 200
def make_spikes():
random_left_length = random.randint(50, 350)
left_spike = codesters.TriangleIso(0, 300, 50, random_left_length, "red")
left_spike.set_rotation(-90)
left_spike.set_left(-250 + .5*random_left_length-25)
left_spike.set_y_speed(spike_speed)
right_length = 500 - (random_left_length + spike_gap)
right_spike = codesters.TriangleIso(0, 300, 50, right_length, "red")
right_spike.set_rotation(90)
right_spike.set_right(250 - .5*right_length+25)
right_spike.set_y_speed(spike_speed)
def interval():
global score
make_spikes()
score += 1
stage.event_interval(interval, spike_interval)
def collision(sprite, hit_sprite):
ship.set_physics_off()
stage.event_interval(None)
ship.set_say_color("orange")
ship.say("You scored " + str(score) + " points!")
ship.event_collision(collision)
