CHECK FOR UNDERSTANDING: Here are a few questions for you to check what you have learned.
- Click the stage and make some fireworks!
- Use the code in the code editor to help you answer the questions.
- Answer the questions to the right by clicking on the correct answers.
- Once you answer all 3 questions, click Submit and Next to move on.
To navigate the page using the TAB key, first press ESC to exit the code editor.
def return_trajectory(speed, angle):
radians = math.radians(angle)
x_velocity = speed * math.cos(radians)
y_velocity = speed * math.sin(radians)
return (x_velocity, y_velocity)
stage.set_background_color("black")
amount = 10
speed = 5
color_list = ["purple", "yellow", "red"]
stage.disable_all_walls()
def click():
x = stage.click_x()
y = stage.click_y()
particle_list = []
for color in color_list:
for counter in range(amount):
sprite = codesters.Circle(x, y, 10, color)
particle_list.append(sprite)
sprite.pen_down()
angle = 0
for count, p in enumerate(particle_list):
count += 1
speed_values = return_trajectory(speed, angle)
p.set_x_speed(speed_values[0])
p.set_y_speed(speed_values[1])
angle += 360/amount
if count % amount == 0:
stage.wait(.1)
stage.wait(0.5)
for p in particle_list:
p.clear()
stage.remove_sprite(p)
# add other actions...
stage.event_click(click)
stage.set_gravity(3)
