"""Game constants and configuration."""

# Snake defaults
DEFAULT_SNAKE_LENGTH = 3
DEFAULT_SNAKE_SPEED = 7
MIN_SNAKE_SPEED = 1
MAX_SNAKE_SPEED = 10

# Snake/food characters
HEAD_CHAR = '█'
BODY_CHAR = '▓'
FOOD_CHAR = '█'

# Screen requirements
MIN_SCREEN_HEIGHT = 10
MIN_SCREEN_WIDTH = 20

# Color pair IDs
COLOR_GREEN = 1
COLOR_RED = 2
COLOR_WHITE = 3

# Speed mapping (snake speed level -> milliseconds delay)
SPEED_TO_MS = {
    1: 250, 2: 225, 3: 200,
    4: 175, 5: 150, 6: 125,
    7: 100, 8: 75,  9: 50, 10: 25
}

# Screen padding
SCREEN_PADDING = 2
MIN_SNAKE_LENGTH = 1