Multiplayer Pong

A game made to learn ECS, only Linux is supported. Uses TCP for networking, seems to work just fine for 2 players. When I used the same networking for syncing movements of 3 players - latency increased drastically. Now uses UDP for networking.

Building & Running

Note

In order to use FETCH_LIBS=OFF you must have libraries installed of your machine.

cmake -DFETCH_LIBS=ON -B build/
cmake --build build/

Now you may run the binaries: pong_server and connect with 2 pong_client.

Configuration

The game supports runtime configuration through a properties file. Create a file named configuration.game in the same directory as the executable to override default settings. The file uses a simple key-value format:

SCREEN_WIDTH = 1024
SCREEN_HEIGHT = 768
FPS_LOCK = 120

PADDLE_SPEED = 500.0
PADDLE_WIDTH = 25.0
PADDLE_HEIGHT = 100.0
PADDLE_SCREEN_SIZE_MARGIN = 60.0

BALL_SIDE = 15.0
BALL_MIN_SPEED = 500.0
BALL_MAX_SPEED = 700.0
BALL_INITIAL_DIRECTION_X = 0.8
BALL_INITIAL_DIRECTION_Y = -0.6

WALL_THICKNESS = 15.0
MIDDLE_LINE_WIDTH = 8.0

SERVER_IP = "192.168.1.100"
SERVER_PORT = 9090

Available Settings

Category	Setting	Type	Default	Description
Display	SCREEN_WIDTH	integer	900	Game window width
Display	SCREEN_HEIGHT	integer	600	Game window height
Display	FPS_LOCK	integer	60	Maximum frames per second
Paddle	PADDLE_SPEED	float	450.0	Paddle movement speed
Paddle	PADDLE_WIDTH	float	20.0	Paddle width
Paddle	PADDLE_HEIGHT	float	80.0	Paddle height
Paddle	PADDLE_SCREEN_SIZE_MARGIN	float	50.0	Distance from screen edge
Ball	BALL_SIDE	float	10.0	Ball size
Ball	BALL_MIN_SPEED	float	450.0	Minimum ball speed
Ball	BALL_MAX_SPEED	float	650.0	Maximum ball speed
Ball	BALL_INITIAL_DIRECTION_X	float	0.7	Initial horizontal direction
Ball	BALL_INITIAL_DIRECTION_Y	float	-0.7	Initial vertical direction
Game	WALL_THICKNESS	float	10.0	Thickness of walls
Game	MIDDLE_LINE_WIDTH	float	10.0	Width of center line
Network	SERVER_IP	string	"127.0.0.1"	Server IP address
Network	SERVER_PORT	integer	8080	Server port number

Controls

Key	Action
J	Move up
K	Move down

Dependencies

• Flecs
• Raylib