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inpututil: Replace JustDisconnectedGamepadIDs with IsGamepadJustDisconnected (#505)

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This commit is contained in:
Hajime Hoshi 2018-04-30 04:34:15 +09:00
parent e4ee3100db
commit a355d701ad
2 changed files with 19 additions and 16 deletions
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15
examples/gamepad/main.go
View File

@ -32,12 +32,21 @@ const (
screenHeight = 480
)
var (
gamepadIDs = map[int]struct{}{}
)
func update(screen *ebiten.Image) error {
// Log the gamepad connection events.
for _, id := range inpututil.JustConnectedGamepadIDs() {
log.Printf("gamepad connected: id: %d", id)
gamepadIDs[id] = struct{}{}
}
for _, id := range inpututil.JustDisconnectedGamepadIDs() {
log.Printf("gamepad disconnected: id: %d", id)
for id := range gamepadIDs {
if inpututil.IsGamepadJustDisconnected(id) {
log.Printf("gamepad disconnected: id: %d", id)
delete(gamepadIDs, id)
}
}
ids := ebiten.GamepadIDs()
@ -56,7 +65,7 @@ func update(screen *ebiten.Image) error {
pressedButtons[id] = append(pressedButtons[id], strconv.Itoa(int(b)))
}
// Log some events.
// Log button events.
if inpututil.IsGamepadButtonJustPressed(id, b) {
log.Printf("button pressed: id: %d, button: %d", id, b)
}

20
inpututil/inpututil.go
View File

@ -243,22 +243,16 @@ func JustConnectedGamepadIDs() []int {
return ids
}
// JustDisconnectedGamepadIDs returns gamepad IDs that are disconnected just in the current frame.
// IsGamepadJustDisconnected returns a boolean value indicating
// whether the gamepad of the given id is released just in the current frame.
//
// JustDisconnectedGamepadIDs might return nil when there is no disconnected gamepad.
//
// JustDisconnectedGamepadIDs is concurrent safe.
func JustDisconnectedGamepadIDs() []int {
var ids []int
// IsGamepadJustDisconnected is concurrent safe.
func IsGamepadJustDisconnected(id int) bool {
theInputState.m.RLock()
for id := range theInputState.prevGamepadIDs {
if _, ok := theInputState.gamepadIDs[id]; !ok {
ids = append(ids, id)
}
}
_, prev := theInputState.prevGamepadIDs[id]
_, current := theInputState.gamepadIDs[id]
theInputState.m.RUnlock()
sort.Ints(ids)
return ids
return prev && !current
}
// IsGamepadButtonJustPressed returns a boolean value indicating