Module spatial 

Spatial audio — position-based stereo panning, distance attenuation, and per-room reverb.

Maps entity world positions to stereo pan and volume. Provides room-type reverb presets (tight combat, long boss, cathedral shrine). All sounds can be positioned in the 2D arena for immersive audio.

Panning model

Uses a linear stereo pan where X position maps to left/right:

• X < 0 → more left channel
• X > 0 → more right channel
• X = 0 → center

Distance attenuation

Inverse-distance model with configurable reference distance and rolloff. Sounds beyond max_distance are silent.

Reverb

Simple Schroeder reverb with 4 comb filters + 2 allpass filters. Room presets configure delay lengths, feedback, and mix.

Structs

DistanceModel

Distance attenuation model.

ReverbParams

Reverb parameters.

SpatialAudioSystem

Manages spatial audio: positioned sounds, distance attenuation, and reverb.

SpatialReverb

Schroeder reverb: 4 parallel comb filters → 2 series allpass filters.

SpatialSound

A sound source with a position in the arena.

StereoPan

Stereo pan result: gain for left and right channels.

Enums

RoomType

Room type for reverb preset selection.

SoundOrigin

Origin of a sound in the game world.