Pong with Pygame

CS110 Final Project Spring, 2024

Team Members

Albi Dobrova

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Project Description

Classic Pong Game. 2 players that can move their paddles up and down with either W and S key, or UP and DOWN arrow keys. Goals are scored if the ball collides with a players respective side. The ball can bounce off the top and bottom walls and paddles through collision handling in pygame. There is a popup start menu screen that prompts the user to hit space bar to begin the game. After any player scores 1 goal, a game over screen is shown and the game window closes. The Final Score displayed at the end is taken from a json file that is both opened and read within the controller.

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GUI Design

Initial Design

Final Design

Program Design

Features

1. Player-controlled paddles: Players can move their paddles up and down to hit the ball.
2. Ball movement and collision: The ball moves continuously and bounces off the paddles and walls.
3. Score tracking: The game keeps track of each player's score as they successfully hit the ball past their opponent's paddle.
4. Game over condition: The game ends when one player reaches a predefined winning score limit.
5. Responsive user interface: The game provides clear feedback to players through visual elements such as paddle movement, ball trajectory, and score display.

Classes

Ball:

This class defines a basic implementation for a ball object in Pygame. It initializes with an x and y coordinate, assigns a radius of 5, and sets initial speeds in both x and y directions. The move method updates the ball's position based on its speed, and the draw method renders the ball on a Pygame surface.

Paddle:

This class represents a paddle object in a Pygame environment. Upon initialization, it requires x and y coordinates, and sets default width and height values. The move method allows the paddle to move vertically by a specified amount (dy), adjusting both the paddle's position and its associated rectangle. Finally, the draw method renders the paddle on a Pygame surface.

ATP

Test 1 : Game Initialization

• Step 1: Launch the Pong game.
• Step 2: Verify that the game window opens with the correct dimensions.
• Step 3: Ensure that the paddles, ball, and score display are visible.
• Expected Outcome: The game initializes successfully with all game elements displayed correctly.

Test 2: Paddle Movement

• Step 1: Start the game.
• Step 2: Use the arrow keys or designated keys to move the paddles up and down.
• Step 3: Verify that both paddles respond to input and move accordingly.
• Expected Outcome: Paddle movement controls are responsive and functional.

Test 3: Ball Movement

• Step 1: Start the game.
• Step 2: Observe the movement of the ball.
• Step 3: Ensure that the ball moves continuously and bounces off the paddles and walls.
• Expected Outcome: The ball moves smoothly and interacts correctly with game elements.

Test 4: Menu Pop-Up

• Step 1: Launch the Pong game.
• Step 2: Observe the initial game screen.
• Step 3: Verify that a menu pops up with the message "Press Space to Start Playing Pong!".
• Expected Outcome: A menu should appear at the beginning of the game, prompting the player to press the spacebar to start playing.

Test 5: Collision Detection

• Step 1: Start the game.
• Step 2: Allow the ball to collide with one of the paddles.
• Step 3: Observe the behavior of the ball upon collision.
• Expected Outcome: When the ball collides with a paddle, it should change direction accordingly, bouncing off the paddle's surface without passing through it. This also goes for the top and bottom walls of the window.