fmod-love

FMOD Studio API module for LÖVE

This module adds support for the FMOD Studio API 2.01.01 (x64) in LÖVE (x64). Works with Windows and macOS for now. Pull requests are welcome.

Note: FMOD is not free, visit https://www.fmod.com/licensing for more info.

Contents

Installation

Building

Usage

Examples

Installation

Download the fmodlove.dll/libfmodlove.dylib file and add it to the directory containing the main.lua file. Download the FMOD Studio API (2.01.01 / x64) and also add fmodstudio.dll/libfmodstudio.dylib /and fmod.dll/libfmod.dll to your game folder.

Building

This project uses SCons. Navigate to the folder containing the SConstruct file and run:

scons platform=windows target=release fmod_api="C:\Program Files (x86)\FMOD SoundSystem\FMOD Studio API Windows" 

Replace platform (windows, osx) and the fmod_api path with the path of your FMOD API installation.

Usage

System functions

fmod = require("fmodlove") // "libfmodlove" for macOS

to load the library. Make sure to add:

package.cpath = package.cpath .. ";?.dylib"

for macOS.

fmod.init(outputType, realChannels, virtualChannels,
	studioInitFlags)

will create and initialize the Studio System. outputType expects an integer, 0 should be fine in most cases. Change Real and Virtual Channels to your liking. Setting studioInitFlags to 1 will enable live update (check docs)

Returns false if failed, true if succeded.

fmod.update()

To update the Studio System (call it in love.update). Returns false if failed, true if succeded.

Listener

Setting num. of listeners

fmod.setNumListeners(numOfListeners)

Returns false if failed, true if succeded.

Setting listener position

fmod.setListener3DPosition(listenerIndex, posX, posY, posZ, dirX, dirY, dirZ, oX, oY, oZ)

If you have one listener the listenerIndex is 0. dirX dirY dirZ is the forward vector, oX oY oZ the up vector. Returns false if failed, true if succeded.

Banks

Loading a bank

fmod.loadBank(bankPath, flags)

bankPath is the path to the bank file. flags (int) can be:

• FMOD_STUDIO_LOAD_BANK_NORMAL (0)
• FMOD_STUDIO_LOAD_BANK_NONBLOCKING (1)
• FMOD_STUDIO_LOAD_BANK_DECOMPRESS_SAMPLES (2)
• FMOD_STUDIO_LOAD_BANK_UNENCRYPTED (4)

Will return an index value to the bank. Returns -1 if failed. Use the returned value to unload the bank if necessary:

fmod.unloadBank(index)

Returns false if failed, true if succeded.

EventInstances

Create an instance

fmod.createInstance(eventPath)

Returns an index value to the EventInstance. Returns -1 if failed. Use the index value to start the instance:

Starting an instance

fmod.startIntance(index)

Returns false if failed, true if succeded.

Stopping an instance

fmod.stopInstance(index, stopMode)

stopMode can be:

• FMOD_STUDIO_STOP_ALLOWFADEOUT (0)
• FMOD_STUDIO_STOP_IMMEDIATE (1)

Returns false if failed, true if succeded.

Releasing an instance

fmod.releaseInstance(index)

Returns false if failed, true if succeded. This will remove the instance from the index.

Setting the 3D Attributes on an instance

fmod.set3DAttributes(index, posX, posY, posZ, dirX, dirY, dirZ, oX, oY, oZ)

dirX dirY dirZ is the forward vector, oX oY oZ the up vector. Returns false if failed, true if succeded.

Playing a simple 2D event (no spatializer)

fmod.playOneShot2D(eventPath)

Will automatically call EventInstance::release after starting. No need to take care of the instance. Returns false if failed, true if succeded.

Playing a simple 3D event

fmod.playOneShot3D(eventPath, posX, posY, posZ, dirX, dirY, dirZ, oX, oY, oZ)

It will automatically call EventInstance::release after playing. dirX dirY dirZ is the forward vector, oX oY oZ the up vector. Returns false if failed, true if succeded.

Setting the volume of an instance

fmod.setInstanceVolume(index, volume)

Returns false if failed, true if succeded.

Check if an instance is playing

fmod.isPlaying(index)

Returns false if failed or not playing, true if playing.

Set the paused state of an instance

fmod.setInstancePaused(index, pauseState)

pauseState should be true or false.

Set the pitch of an instance

fmod.setInstancePitch(index, pitch)

Returns false if failed, true if succeded.

Get the timeline position of an instance

fmod.getTimelinePosition(index)

Returns the timeline position (int). Returns -1 if failed.

Set the timeline position of an instance

fmod.setTimelinePosition(index, position)

Returns false if failed, true if succeded.

Get the RMS value of a playing instance

fmod.getInstanceRms(index)

Returns the RMS value of an instance. Returns -1 if failed.

Parameters

Get a global parameter value by name

fmod.getGlobalParameterByName(parameterName)

Takes the parameter name and returns the parameter value. Returns -1 if failed.

Set a global parameter value by name

fmod.setGlobalParameterByName(parameterName, value, ignoreSeekSpeed)

ignoreSeekSpeed can be true or false. Returns false if failed, true if succeded.

Get a local parameter value by name

fmod.getParameterByName(instanceIndex, parameterName)

Takes the instance index and the parameter name and returns its value. Returns -1 if failed.

Set a local parameter value by name

fmod.setParameterByName(instanceIndex, parameterName, value, ignoreSeekSpeed)

Returns false if failed, true if succeded.

Busses

Getting a bus

fmod.getBus(busPath)

Takes the bus path and returns an index to that bus. Use it to get or set the bus volume. Returns -1 if failed.

Get the bus volume

fmod.getBusVolume(index)

Returns the bus volume. Returns -1 if failed.

Set the bus volume

fmod.setBusVolume(index, volume)

Returns false if failed, true if succeded.

VCAs

Getting a VCA

fmod.getVCA(vcaPath)

Takes the VCA path and returns an index value to that VCA. Use it to get or set the VCA volume. Returns -1 if failed.

Get the VCA volume

fmod.getVCAVolume(index)

Returns the VCA volume. Returns -1 if failed.

Set the VCA volume

fmod.setVCAVolume(index, volume)

Returns false if failed, true if succeded.

Examples

Initialising the Studio System and loading banks

fmod = require("fmod_love")
function love.load()
    initResult = fmod.init(0, 32, 128, 1)
    bankIndex1 = fmod.loadBank("Desktop/Master.bank", 0)
    bankIndex2 = fmod.loadBank("Desktop/Master.strings.bank", 0)
end

Playing a 3d sound by manually managing instances

instance = fmod.createInstance("event:/OneShot")
fmod.set3DAttributes(instance, love.mouse.getX(), love.mouse.getY(), 0, 0,
                         -1, 0, 0, 0, 1)
fmod.startInstance(instance)
fmod.releaseInstance(instance)

Playing a 2d sound with playOneShot2D

fmod.playOneShot2D("event:/Player/OneShot")