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Flappy Bird 4

Due 1/22 at 11:59

In part 3, you added scrolling pipes. In this final part, you will allow the bird to collide with the pipes!

• Detect collision
• End game if collision occurs
• Track score
• Show score

Detecting Collisions

Review the slideshow on collisions. Remember that you’ll have to check four conditions:

• Left edge of the pipe and the right edge of the bird
• Right edge of the pipe and the left edge of the bird
• Bottom of the top pipe and top of the bird
• Top of the bottom pipe and bottom of the bird

As an example, here’s a sketch of the first condition you’ll be checking:

And here is the code to check it (you may have to adjust the calculations):

# Calculate right/left sides of pipe (rectangle) hitbox
pipe_right = pipe_x + PIPE_WIDTH
pipe_left = pipe_x

# Calculate right/left sides of bird (circle) hitbox
bird_right = bird_x + BIRD_SIZE / 2
bird_left = bird_x - BIRD_SIZE / 2

# Check if there is a collision in the X dimension
x_intersects = pipe_left < bird_right and pipe_right > bird_left

Tracking Score

You can keep track of the score in a couple of different ways:

• Increase score every frame
• Increase score every time the player passes a pipe

Either way, you need to make the score increase as the game continues.

Rendering Text

Rendering text in Pygame is a three-step process:

1. Create a font
2. Use font to render text to a surface
3. “Blit” the surface to the screen

Here’s what those steps look like:

# Create a font object (using the default font)
size = 32
font = pygame.font.Font(None, size)

# Render text to a surface
text = f"Score: {score}"
antialiased = True
color = (0, 0, 0)
rendered_text = font.render(text, antialiased, color)

# Blit the surface to the screen
coordinates = (16, 16)
game_window.blit(rendered_text, coordinates)

Remember: you will need to re-draw the text every frame.

See the pygame.font documentation for more info.

Submit Assignment

When your program meets the requirements, submit your .py file here:

Submit Assignment