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Code Issues Packages Projects Releases Wiki Activity

inpututil: Add IsGamepadButtonJustReleased (#504)

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This commit is contained in:
Hajime Hoshi 2018-02-17 03:41:45 +09:00
parent 381aab0a91
commit debe4735cd
1 changed files with 39 additions and 4 deletions
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35
inpututil/inpututil.go
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@ -31,6 +31,8 @@ type inputState struct {
prevMouseButtonStates map[ebiten.MouseButton]int
gamepadButtonStates map[int]map[ebiten.GamepadButton]int
prevGamepadButtonStates map[int]map[ebiten.GamepadButton]int
touchStates map[int]int
m sync.RWMutex
@ -44,6 +46,8 @@ var theInputState = &inputState{
prevMouseButtonStates: map[ebiten.MouseButton]int{},
gamepadButtonStates: map[int]map[ebiten.GamepadButton]int{},
prevGamepadButtonStates: map[int]map[ebiten.GamepadButton]int{},
touchStates: map[int]int{},
}
@ -83,14 +87,27 @@ func (i *inputState) update() {
}
// Gamepads
// Reset the previous states first since some gamepad IDs might be already gone.
for id := range i.prevGamepadButtonStates {
for b := range i.prevGamepadButtonStates[id] {
i.prevGamepadButtonStates[id][b] = 0
}
}
ids := map[int]struct{}{}
for _, id := range ebiten.GamepadIDs() {
ids[id] = struct{}{}
if _, ok := i.prevGamepadButtonStates[id]; !ok {
i.prevGamepadButtonStates[id] = map[ebiten.GamepadButton]int{}
}
if _, ok := i.gamepadButtonStates[id]; !ok {
i.gamepadButtonStates[id] = map[ebiten.GamepadButton]int{}
}
n := ebiten.GamepadButtonNum(id)
for b := ebiten.GamepadButton(0); b < ebiten.GamepadButton(n); b++ {
i.prevGamepadButtonStates[id][b] = i.gamepadButtonStates[id][b]
if ebiten.IsGamepadButtonPressed(id, b) {
i.gamepadButtonStates[id][b]++
} else {
@ -192,6 +209,24 @@ func IsGamepadButtonJustPressed(id int, button ebiten.GamepadButton) bool {
return GamepadButtonPressDuration(id, button) == 1
}
// IsGamepadButtonJustReleased returns a boolean value indicating
// whether the given gamepad button of the gamepad id is released just in the current frame.
//
// IsGamepadButtonJustReleased is concurrent safe.
func IsGamepadButtonJustReleased(id int, button ebiten.GamepadButton) bool {
theInputState.m.RLock()
prev := 0
if _, ok := theInputState.prevGamepadButtonStates[id]; ok {
prev = theInputState.prevGamepadButtonStates[id][button]
}
current := 0
if _, ok := theInputState.gamepadButtonStates[id]; ok {
current = theInputState.gamepadButtonStates[id][button]
}
theInputState.m.RUnlock()
return current == 0 && prev > 0
}
// GamepadButtonPressDuration returns how long the gamepad button of the gamepad id is pressed in frames.
//
// GamepadButtonPressDuration is concurrent safe.