"""Game constants shared between client and server."""

# Network settings
DEFAULT_HOST = "0.0.0.0"  # Listen on all interfaces for multiplayer
DEFAULT_PORT = 8888
DEFAULT_WS_PORT = 8889
DEFAULT_HTTP_PORT = 8000

# Multicast discovery settings
MULTICAST_GROUP = "239.255.0.1"
MULTICAST_PORT = 9999
DISCOVERY_TIMEOUT = 3.0  # seconds to wait for server responses
BEACON_INTERVAL = 2.0  # how often server announces itself

# Game grid settings
GRID_WIDTH = 40
GRID_HEIGHT = 30
CELL_SIZE = 20  # pixels

# Game timing
TICK_RATE = 0.1  # seconds (10 ticks per second)
FPS = 60  # client rendering FPS

# Game rules
INITIAL_SNAKE_LENGTH = 3
SNAKE_GROWTH = 1  # segments to grow when eating food

# Colors (RGB)
COLOR_BACKGROUND = (0, 0, 0)
COLOR_GRID = (40, 40, 40)
COLOR_FOOD = (255, 0, 0)
COLOR_SNAKES = [
    (0, 255, 0),    # Green - Player 1
    (0, 0, 255),    # Blue - Player 2
    (255, 255, 0),  # Yellow - Player 3
    (255, 0, 255),  # Magenta - Player 4
]

# Directions
UP = (0, -1)
DOWN = (0, 1)
LEFT = (-1, 0)
RIGHT = (1, 0)

OPPOSITE_DIRECTIONS = {
    UP: DOWN,
    DOWN: UP,
    LEFT: RIGHT,
    RIGHT: LEFT,
}