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# joysticks

Go language joystick interface.

uses channels for events, so multi-threaded.

uses channels for events, for flexibility and multi-threading.

Overview/docs: [![GoDoc](https://godoc.org/github.com/splace/joysticks?status.svg)](https://godoc.org/github.com/splace/joysticks)

     go get github.com/splace/joysticks

Example: play a note when pressing button #1. hat position changes frequency, y axis, and volume, x axis. (double press button #10 to exit) 

Example: play a note when pressing button #1. hat position changes frequency, y axis, and volume, x axis. (long press button #10 to exit) 

	package main

// Connect sets up a go routine that puts a joysticks events onto registered channels.

// register channels by using the returned state object's On<xxx>(index) methods.

// Note: only one event, of each type '<xxx>', for each 'index', re-registering stops previously registered event. 

// then activate using state objects ProcessEvents() method.(usually in a go routine.)

func Connect(index int) (js State, e error) {

	r, e := os.OpenFile(fmt.Sprintf("/dev/input/js%d", index-1), os.O_RDONLY, 0666)

	return c

}

// button goes closed

// button goes open and last event on it, closed, wasn't recent. (within 1 second) 

func (js State) OnLong(button uint8) chan event {

	c := make(chan event)

	js.buttonLongPressEvents[button] = c