Pong Game (Python Turtle)

A polished 2-player Pong game built with Python's built-in turtle graphics module.

What This Project Uses

• python (tested with Python 3.11 on Windows)
• Standard library only:
• turtle for graphics, text, and keyboard input
• time for frame pacing with sleep

No external packages are required.

Files

• pong_turtle.py: main game script
• README.md: project documentation

Features

• Two-player local gameplay
• Live top scoreboard (Left and Right)
• Dashed center line for a cleaner arena
• Pause and resume (Space)
• Restart (R)
• Quit (Q)
• Win condition: first player to reach 7 points
• Ball speed increases slightly after paddle hits

Controls

• W: left paddle up
• S: left paddle down
• Up Arrow: right paddle up
• Down Arrow: right paddle down
• Space: pause/resume
• R: restart game
• Q: quit game

Run

From this folder:

python pong_turtle.py

Rules

1. Press Space to start.
2. Ball crossing the right edge gives a point to Left.
3. Ball crossing the left edge gives a point to Right.
4. After each point, the ball resets to center.
5. First player to 7 points wins.
6. After win: press R to restart or Q to quit.

Code Overview

1) Constants and window setup

pong_turtle.py defines constants for screen size, paddle limits, and win score:

• WIDTH, HEIGHT
• PADDLE_LIMIT_TOP, PADDLE_LIMIT_BOTTOM
• WIN_SCORE

screen.tracer(0) enables manual frame updates for smoother animation.

2) Core game objects

• make_paddle(x_pos) builds paddles with shared styling
• left_pad and right_pad are paddle turtles
• ball uses custom attributes:
• ball.dx: horizontal velocity
• ball.dy: vertical velocity
• ball.base_speed: reset speed after scoring
• divider draws the dashed middle line

3) Score and info UI

• score_writer prints current score
• info_writer prints controls, pause text, and winner text
• draw_score() refreshes the score line
• draw_info() refreshes the info line

4) State and helper functions

State variables:

• left_score, right_score
• game_paused
• game_over

Helper functions:

• reset_ball(direction) resets position and serve direction
• check_winner() stops active play when a player reaches WIN_SCORE
• toggle_pause(), restart_game(), quit_game()

5) Keyboard bindings

The script uses screen.onkeypress(...) for controls:

• Left paddle: w / s
• Right paddle: Up / Down
• Game control: space, r, q

6) Main loop behavior

Every frame:

• update screen
• wait 0.01s
• skip movement if paused
• move ball by dx/dy
• bounce on top/bottom walls
• update score on left/right boundary crossing
• detect paddle collisions and increase speed slightly

Easy Customization

• Change WIN_SCORE for match length
• Change colors (bgcolor, paddle/ball colors)
• Change difficulty by editing:
• ball.base_speed
• collision multipliers (1.05, 1.02)
• Add sound on hit/score (for example, winsound on Windows)
• Add a simple AI for one paddle

Troubleshooting

• Check Python install:

python --version

• If keys do not respond, click inside the game window once to focus it.
• If game feels too fast or too slow, change time.sleep(0.01).