0xpetra/eru

Basic mud reference implementation (contracts + phaser client)

🎛 Eru

Eru is a music layer to enable devs to create tools, and help melomaniacs and fans compose, remix and share music in an open and interoperable way.

Entity Component System

Entities

• Sound
• Track
• Sample

Component Details

• EruMetadataComponent is Component
  • Name and authors
• SoundUriComponent is StringComponent
  • URI of music binary (IPFS, etc)
• TrackConfigComponent
  • entityId of the sound
  • unordered array of positive integer values representing the number of miliseconds after the beginning of the track to play the Sound
• SampleTracksComponent is Uint256Component
  • Track entity IDs that are part of the sample

Systems

• struct EruMetadata
  • name: string
  • authors: string[]
• setSoundEntitySystem(soundEntity, uri, eruMetadata)
  • soundEntity.SoundUriComponent = uri
  • entity.EruMetadataComponent = eruMetadata
• struct Tracks
• setSampleEntitySystem(soundEntity,
• setSampleEntity(sampleEntityId, tracks
• SetSoundForTrack(trackEntity, soundEntity)
  • trackEntity.TrackSoundComponent = soundEntity
• SchedulePlayForTrack(trackEntity, msAfterStart)
  • trackEntity.TrackTimingComponent.append(msAfterStart)
• AddTrackToSample(sampleEntity, trackEntity)
  • sampleEntity.SampleTracksComponent.append(trackEntity)
• RemoveTrackFromSample(sampleEntity, trackEntity)
  • sampleEntity.SampleTracksComponent.remove(trackEntity)

Deploy contracts

From the contracts folder run:

yarn mud deploy --deployerPrivateKey <PRIVATE KEY> --deployClient --netlifySlug <SLUG> --netlifyPersonalToken <PERSONAL TOKEN>

Test serverless functions locally

Run netlify functions:serve from the client directory.