#![allow(dead_code)]

pub struct SoundChannel {
    // Channel-specific state (envelope, frequency, etc.)
}

pub struct Sound {
    pub channels: [SoundChannel; 4],
    // Global sound state (master volume, etc.)
}

impl SoundChannel {
    pub fn new() -> Self {
        SoundChannel {
            // Initialize channel state
        }
    }

    pub fn step(&mut self) {
        // Advance channel state (envelope, sweep, etc.)
    }
}

impl Sound {
    pub fn new() -> Self {
        Sound {
            channels: [
                SoundChannel::new(),
                SoundChannel::new(),
                SoundChannel::new(),
                SoundChannel::new(),
            ],
            // Initialize global sound state
        }
    }

    pub fn step(&mut self) {
        for channel in &mut self.channels {
            channel.step();
        }
        // Advance global sound state
    }

    pub fn read_register(&self, _addr: u16) -> u8 {
        // Read from sound register (return default for now)
        0
    }

    pub fn write_register(&mut self, _addr: u16, _value: u8) {
        // Write to sound register (no-op for now)
    }
}
