ebiten/internal/gamepad/gamepad_cbackend.go
Hajime Hoshi 0cd43bd081 internal/gamepad: stop embedding a member into a struct
This is a preparation to switch the gamepad implementation for Xbox.

Updates #2084
2022-06-24 19:01:50 +09:00

134 lines
3.1 KiB
Go

// Copyright 2022 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 ebitencbackend
// +build ebitencbackend
package gamepad
import (
"time"
"github.com/hajimehoshi/ebiten/v2/internal/cbackend"
)
type nativeGamepads struct {
gamepads []cbackend.Gamepad
ids map[int]struct{}
}
func (*nativeGamepads) init(gamepads *gamepads) error {
return nil
}
func (g *nativeGamepads) update(gamepads *gamepads) error {
g.gamepads = g.gamepads[:0]
g.gamepads = cbackend.AppendGamepads(g.gamepads)
for id := range g.ids {
delete(g.ids, id)
}
for _, gp := range g.gamepads {
if g.ids == nil {
g.ids = map[int]struct{}{}
}
g.ids[gp.ID] = struct{}{}
gamepad := gamepads.find(func(gamepad *Gamepad) bool {
return gamepad.native.id == gp.ID
})
if gamepad == nil {
gamepad = gamepads.add("", "")
gamepad.native.id = gp.ID
gamepad.native.standard = gp.Standard
gamepad.native.axisValues = make([]float64, gp.AxisCount)
gamepad.native.buttonPressed = make([]bool, gp.ButtonCount)
gamepad.native.buttonValues = make([]float64, gp.ButtonCount)
}
gamepad.m.Lock()
copy(gamepad.native.axisValues, gp.AxisValues[:])
copy(gamepad.native.buttonValues, gp.ButtonValues[:])
copy(gamepad.native.buttonPressed, gp.ButtonPressed[:])
gamepad.m.Unlock()
}
// Remove an unused gamepads.
gamepads.remove(func(gamepad *Gamepad) bool {
_, ok := g.ids[gamepad.native.id]
return !ok
})
return nil
}
type nativeGamepad struct {
id int
standard bool
axisValues []float64
buttonPressed []bool
buttonValues []float64
}
func (*nativeGamepad) update(gamepad *gamepads) error {
return nil
}
func (g *nativeGamepad) hasOwnStandardLayoutMapping() bool {
return g.standard
}
func (g *nativeGamepad) axisCount() int {
return len(g.axisValues)
}
func (g *nativeGamepad) buttonCount() int {
return len(g.buttonValues)
}
func (g *nativeGamepad) hatCount() int {
return 0
}
func (g *nativeGamepad) axisValue(axis int) float64 {
if axis < 0 || axis >= len(g.axisValues) {
return 0
}
return g.axisValues[axis]
}
func (g *nativeGamepad) isButtonPressed(button int) bool {
if button < 0 || button >= len(g.buttonPressed) {
return false
}
return g.buttonPressed[button]
}
func (g *nativeGamepad) buttonValue(button int) float64 {
if button < 0 || button >= len(g.buttonValues) {
return 0
}
return g.buttonValues[button]
}
func (*nativeGamepad) hatState(hat int) int {
return hatCentered
}
func (g *nativeGamepad) vibrate(duration time.Duration, strongMagnitude float64, weakMagnitude float64) {
cbackend.VibrateGamepad(g.id, duration, strongMagnitude, weakMagnitude)
}