internal/uidriver/mobile: Refactoring

Updates #1105

internal/uidriver/mobile/gamepad_android.go

@@ -0,0 +1,33 @@
+// Copyright 2021 The Ebiten 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.
+
+package mobile
+
+import (
+	"github.com/hajimehoshi/ebiten/v2/internal/driver"
+)
+
+// UpdateGamepads updates the gamepad states.
+// UpdateGamepads is called when the gamepad states are given from outside like Android.
+func (u *UserInterface) UpdateGamepads(gamepads []Gamepad) {
+	u.input.updateGamepads(gamepads)
+	if u.fpsMode == driver.FPSModeVsyncOffMinimum {
+		u.renderRequester.RequestRenderIfNeeded()
+	}
+}
+
+func (i *Input) updateGamepads(gamepads []Gamepad) {
+	i.gamepads = i.gamepads[:0]
+	i.gamepads = append(i.gamepads, gamepads...)
+}

internal/uidriver/mobile/gamepad_ios.go

@@ -0,0 +1,20 @@
+// Copyright 2021 The Ebiten 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 ios
+// +build ios
+
+package mobile
+
+// TODO: Implement gamepad detection for iOS (#1105).

internal/uidriver/mobile/input.go

@@ -212,11 +212,6 @@ func (i *Input) update(keys map[driver.Key]struct{}, runes []rune, touches []Tou
 	i.touches = append(i.touches, touches...)
 }
 
-func (i *Input) updateGamepads(gamepads []Gamepad) {
-	i.gamepads = i.gamepads[:0]
-	i.gamepads = append(i.gamepads, gamepads...)
-}
-
 func (i *Input) resetForFrame() {
 	i.runes = nil
 }

internal/uidriver/mobile/ui.go

@@ -475,15 +475,6 @@ func (u *UserInterface) UpdateInput(keys map[driver.Key]struct{}, runes []rune,
 	}
 }
 
-// UpdateGamepads updates the gamepad states.
-// UpdateGamepads is called when the gamepad states are given from outside like Android.
-func (u *UserInterface) UpdateGamepads(gamepads []Gamepad) {
-	u.input.updateGamepads(gamepads)
-	if u.fpsMode == driver.FPSModeVsyncOffMinimum {
-		u.renderRequester.RequestRenderIfNeeded()
-	}
-}
-
 type RenderRequester interface {
 	SetExplicitRenderingMode(explicitRendering bool)
 	RequestRenderIfNeeded()

mobile/ebitenmobileview/input.go

@@ -18,8 +18,6 @@
 package ebitenmobileview
 
 import (
-	"runtime"
-
 	"github.com/hajimehoshi/ebiten/v2/internal/driver"
 	"github.com/hajimehoshi/ebiten/v2/internal/uidriver/mobile"
 )
@@ -33,14 +31,10 @@ var (
 	keys    = map[driver.Key]struct{}{}
 	runes   []rune
 	touches = map[driver.TouchID]position{}
-
-	// gamepads is updated only at Android.
-	gamepads = map[driver.GamepadID]mobile.Gamepad{}
 )
 
 var (
-	touchSlice   []mobile.Touch
-	gamepadSlice []mobile.Gamepad
+	touchSlice []mobile.Touch
 )
 
 func updateInput() {
@@ -54,12 +48,4 @@ func updateInput() {
 	}
 
 	mobile.Get().UpdateInput(keys, runes, touchSlice)
-
-	if runtime.GOOS == "android" {
-		gamepadSlice = gamepadSlice[:0]
-		for _, g := range gamepads {
-			gamepadSlice = append(gamepadSlice, g)
-		}
-		mobile.Get().UpdateGamepads(gamepadSlice)
-	}
 }

mobile/ebitenmobileview/input_android.go

@@ -222,7 +222,7 @@ func OnKeyDownOnAndroid(keyCode int, unicodeChar int, source int, deviceID int)
 				return
 			}
 			g.Buttons[button] = true
-			updateInput()
+			updateGamepads()
 		}
 	case source&sourceJoystick == sourceJoystick:
 		// DPAD keys can come here, but they are also treated as an axis at a motion event. Ignore them.
@@ -248,7 +248,7 @@ func OnKeyUpOnAndroid(keyCode int, source int, deviceID int) {
 				return
 			}
 			g.Buttons[button] = false
-			updateInput()
+			updateGamepads()
 		}
 	case source&sourceJoystick == sourceJoystick:
 		// DPAD keys can come here, but they are also treated as an axis at a motion event. Ignore them.
@@ -272,7 +272,7 @@ func OnGamepadAxesChanged(deviceID int, axisID int, value float32) {
 		return
 	}
 	g.Axes[aid] = value
-	updateInput()
+	updateGamepads()
 }
 
 func OnGamepadAdded(deviceID int, name string, buttonNum int, axisNum int, descriptor string, vendorID int, productID int, buttonMask int, axisMask int) {
@@ -309,6 +309,7 @@ func OnGamepadAdded(deviceID int, name string, buttonNum int, axisNum int, descr
 		ButtonNum: buttonNum,
 		AxisNum:   axisNum,
 	}
+	updateGamepads()
 }
 
 func OnInputDeviceRemoved(deviceID int) {
@@ -316,4 +317,18 @@ func OnInputDeviceRemoved(deviceID int) {
 		delete(gamepads, id)
 		delete(deviceIDToGamepadID, deviceID)
 	}
+	updateGamepads()
+}
+
+var (
+	gamepads     = map[driver.GamepadID]mobile.Gamepad{}
+	gamepadSlice []mobile.Gamepad
+)
+
+func updateGamepads() {
+	gamepadSlice = gamepadSlice[:0]
+	for _, g := range gamepads {
+		gamepadSlice = append(gamepadSlice, g)
+	}
+	mobile.Get().UpdateGamepads(gamepadSlice)
 }