ebiten/internal/gamepad/gamepad_xbox_windows.go

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// Copyright 2022 The Ebitengine Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build !ebitencbackend
// +build !ebitencbackend
package gamepad
import (
"time"
"unsafe"
"golang.org/x/sys/windows"
"github.com/hajimehoshi/ebiten/v2/internal/gamepaddb"
)
func standardButtonToGamepadInputGamepadButton(b gamepaddb.StandardButton) (_GameInputGamepadButtons, bool) {
switch b {
case gamepaddb.StandardButtonRightBottom:
return _GameInputGamepadA, true
case gamepaddb.StandardButtonRightRight:
return _GameInputGamepadB, true
case gamepaddb.StandardButtonRightLeft:
return _GameInputGamepadX, true
case gamepaddb.StandardButtonRightTop:
return _GameInputGamepadY, true
case gamepaddb.StandardButtonFrontTopLeft:
return _GameInputGamepadLeftShoulder, true
case gamepaddb.StandardButtonFrontTopRight:
return _GameInputGamepadRightShoulder, true
case gamepaddb.StandardButtonFrontBottomLeft:
return 0, false // Use leftTrigger instead.
case gamepaddb.StandardButtonFrontBottomRight:
return 0, false // Use rightTrigger instead.
case gamepaddb.StandardButtonCenterLeft:
return _GameInputGamepadView, true
case gamepaddb.StandardButtonCenterRight:
return _GameInputGamepadMenu, true
case gamepaddb.StandardButtonLeftStick:
return _GameInputGamepadLeftThumbstick, true
case gamepaddb.StandardButtonRightStick:
return _GameInputGamepadRightThumbstick, true
case gamepaddb.StandardButtonLeftTop:
return _GameInputGamepadDPadUp, true
case gamepaddb.StandardButtonLeftBottom:
return _GameInputGamepadDPadDown, true
case gamepaddb.StandardButtonLeftLeft:
return _GameInputGamepadDPadLeft, true
case gamepaddb.StandardButtonLeftRight:
return _GameInputGamepadDPadRight, true
case gamepaddb.StandardButtonCenterCenter:
return 0, false
}
return 0, false
}
type nativeGamepadsXbox struct {
gameInput *_IGameInput
deviceCallbackPtr uintptr
token _GameInputCallbackToken
}
func (n *nativeGamepadsXbox) init(gamepads *gamepads) error {
g, err := _GameInputCreate()
if err != nil {
return err
}
n.gameInput = g
n.deviceCallbackPtr = windows.NewCallbackCDecl(n.deviceCallback)
if err := n.gameInput.RegisterDeviceCallback(
nil,
_GameInputKindGamepad,
_GameInputDeviceConnected,
_GameInputBlockingEnumeration,
unsafe.Pointer(gamepads),
n.deviceCallbackPtr,
&n.token,
); err != nil {
return err
}
return nil
}
func (n *nativeGamepadsXbox) update(gamepads *gamepads) error {
return nil
}
func (n *nativeGamepadsXbox) deviceCallback(callbackToken _GameInputCallbackToken, context unsafe.Pointer, device *_IGameInputDevice, timestamp uint64, currentStatus _GameInputDeviceStatus, previousStatus _GameInputDeviceStatus) uintptr {
gps := (*gamepads)(context)
// Connected.
if currentStatus&_GameInputDeviceConnected != 0 {
// TODO: Give a good name and a SDL ID.
gp := gps.add("", "00000000000000000000000000000000")
gp.native = &nativeGamepadXbox{
gameInputDevice: device,
}
return 0
}
// Disconnected.
gps.remove(func(gamepad *Gamepad) bool {
return gamepad.native.(*nativeGamepadXbox).gameInputDevice == device
})
return 0
}
type nativeGamepadXbox struct {
gameInputDevice *_IGameInputDevice
state _GameInputGamepadState
}
func (n *nativeGamepadXbox) update(gamepads *gamepads) error {
gameInput := gamepads.native.(*nativeGamepadsXbox).gameInput
r, err := gameInput.GetCurrentReading(_GameInputKindGamepad, n.gameInputDevice)
if err != nil {
return err
}
state, ok := r.GetGamepadState()
if !ok {
n.state = _GameInputGamepadState{}
return nil
}
n.state = state
return nil
}
func (n *nativeGamepadXbox) hasOwnStandardLayoutMapping() bool {
return true
}
func (n *nativeGamepadXbox) axisCount() int {
return int(gamepaddb.StandardAxisMax) + 1
}
func (n *nativeGamepadXbox) buttonCount() int {
return int(gamepaddb.StandardButtonMax) + 1
}
func (n *nativeGamepadXbox) hatCount() int {
return 0
}
func (n *nativeGamepadXbox) axisValue(axis int) float64 {
switch gamepaddb.StandardAxis(axis) {
case gamepaddb.StandardAxisLeftStickHorizontal:
return float64(n.state.leftThumbstickX)
case gamepaddb.StandardAxisLeftStickVertical:
return float64(n.state.leftThumbstickY)
case gamepaddb.StandardAxisRightStickHorizontal:
return float64(n.state.rightThumbstickX)
case gamepaddb.StandardAxisRightStickVertical:
return float64(n.state.rightThumbstickY)
}
return 0
}
func (n *nativeGamepadXbox) buttonValue(button int) float64 {
switch gamepaddb.StandardButton(button) {
case gamepaddb.StandardButtonFrontBottomLeft:
return float64(n.state.leftTrigger)
case gamepaddb.StandardButtonFrontBottomRight:
return float64(n.state.rightTrigger)
}
b, ok := standardButtonToGamepadInputGamepadButton(gamepaddb.StandardButton(button))
if !ok {
return 0
}
if n.state.buttons&b != 0 {
return 1
}
return 0
}
func (n *nativeGamepadXbox) isButtonPressed(button int) bool {
// Use XInput's trigger dead zone.
// See https://source.chromium.org/chromium/chromium/src/+/main:device/gamepad/public/cpp/gamepad.h;l=22-23;drc=6997f8a177359bb99598988ed5e900841984d242
// TODO: Integrate this value with the same one in the package gamepaddb.
const threshold = 30.0 / 255.0
switch gamepaddb.StandardButton(button) {
case gamepaddb.StandardButtonFrontBottomLeft:
return n.state.leftTrigger >= threshold
case gamepaddb.StandardButtonFrontBottomRight:
return n.state.rightTrigger >= threshold
}
b, ok := standardButtonToGamepadInputGamepadButton(gamepaddb.StandardButton(button))
if !ok {
return false
}
if n.state.buttons&b != 0 {
return true
}
return false
}
func (n *nativeGamepadXbox) hatState(hat int) int {
return 0
}
func (n *nativeGamepadXbox) vibrate(duration time.Duration, strongMagnitude float64, weakMagnitude float64) {
}