Commit 05033cfd authored by simon's avatar simon
Browse files

comment

parent 7981e0d0

joysticks.go

+5 −2
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@ type button struct { 
	value  bool

}



//HID holds the in-coming event channel, mappings, and registered events for a joystick, and has methods to control and adjust behaviour.

//HID holds the in-coming event channel, mappings, and registered events for a device, and has methods to control and adjust behaviour.

type HID struct {

	OSEvents              chan osEventRecord

	Buttons               map[uint8]button
@@ -73,7 +73,7 @@ type HatAngleEvent struct { 
	Angle float32

}



// ParcelOutEvents interprets waits on the HID.OSEvent channel (so is blocking), then puts the required event(s), on any registered channel(s).

// ParcelOutEvents waits on the HID.OSEvent channel (so is blocking), then puts the required event(s), on any registered channel(s).

func (d HID) ParcelOutEvents() {

	for {

		if evt, ok := <-d.OSEvents; ok {
@@ -190,6 +190,7 @@ func (d HID) OnRotate(hat uint8) chan event { 
	return c

}



// see if Button exists.

func (d HID) ButtonExists(button uint8) (ok bool) {

	for _, v := range d.Buttons {

		if v.number == button {
@@ -199,6 +200,7 @@ func (d HID) ButtonExists(button uint8) (ok bool) { 
	return

}



// see if Hat exists.

func (d HID) HatExists(hat uint8) (ok bool) {

	for _, v := range d.HatAxes {

		if v.number == hat {
@@ -208,6 +210,7 @@ func (d HID) HatExists(hat uint8) (ok bool) { 
	return

}



// insert events as if from hardware.

func (d HID) InsertSyntheticEvent(v int16, t uint8, i uint8) {

	d.OSEvents <- osEventRecord{Value: v, Type: t, Index: i}

}

joysticks_linux.go

+2 −2
Original line number Diff line number Diff line
@@ -43,8 +43,8 @@ var inputPathSlice = []byte("/dev/input/js ")[0:13] 


// 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 events going on the old channel.

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

// Note: only one event, of each type '<xxx>', for each 'index', re-registering, or deleting, event stops events going on the old channel.

// needs HID objects ParcelOutEvents() method to perform piping.(usually in a go routine.)

func Connect(index int) (d *HID) {

	r, e := os.OpenFile(string(strconv.AppendUint(inputPathSlice, uint64(index-1), 10)), os.O_RDWR, 0)

	if e != nil {