Maraiah/maraiah/map/bonk.rs

//! `SoundRand` type.

use crate::{err::*, fixed::{Angle, Fixed}};

/// Reads a `bonk` chunk.
pub fn read(b: &[u8]) -> ResultS<(SoundRand, usize)>
{
	read_data! {
		endian: BIG, buf: b, size: 32, start: 0, data {
			let flags   = u16[0] flag SoundRandFlags;
			let index   = u16[2];
			let vol_nrm = u16[4];
			let vol_dta = u16[6];
			let prd_nrm = u16[8];
			let prd_dta = u16[10];
			let yaw_nrm = Angle[12];
			let yaw_dta = Angle[14];
			let pit_nrm = Fixed[16];
			let pit_dta = Fixed[20];
		}
	}

	Ok((SoundRand{flags, index, vol_nrm, vol_dta, prd_nrm, prd_dta, yaw_nrm,
	              yaw_dta, pit_nrm, pit_dta}, 32))
}

/// A randomly played sound definition.
#[cfg_attr(feature = "serde_obj", derive(serde::Serialize))]
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct SoundRand {
	pub flags:   SoundRandFlags,
	pub index:   u16,
	pub vol_nrm: u16,
	pub vol_dta: u16,
	pub prd_nrm: u16,
	pub prd_dta: u16,
	pub yaw_nrm: Angle,
	pub yaw_dta: Angle,
	pub pit_nrm: Fixed,
	pub pit_dta: Fixed,
}

c_bitfield! {
	/// Flags for `SoundRand`.
	#[cfg_attr(feature = "serde_obj", derive(serde::Serialize))]
	pub struct SoundRandFlags: u16 {
		NO_DIRECTION = 0,
		_2           = 1,
	}
}

// EOF