mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-13 22:47:26 +01:00
729 lines
19 KiB
Go
729 lines
19 KiB
Go
// Copyright 2021 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// gamecontrollerdb.txt is downloaded at https://github.com/gabomdq/SDL_GameControllerDB.
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// To update the database file, run:
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//
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// curl --location --remote-name https://raw.githubusercontent.com/gabomdq/SDL_GameControllerDB/master/gamecontrollerdb.txt
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//go:generate file2byteslice -package gamepaddb -input=./gamecontrollerdb.txt -output=./gamecontrollerdb.txt.go -var=gamecontrollerdbTxt
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package gamepaddb
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import (
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"bufio"
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"bytes"
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"fmt"
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"io"
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"runtime"
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"strconv"
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"strings"
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"sync"
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)
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type platform int
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const (
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platformUnknown platform = iota
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platformWindows
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platformMacOS
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platformUnix
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platformAndroid
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platformIOS
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)
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var currentPlatform platform
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func init() {
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if runtime.GOOS == "windows" {
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currentPlatform = platformWindows
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return
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}
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if runtime.GOOS == "aix" ||
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runtime.GOOS == "dragonfly" ||
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runtime.GOOS == "freebsd" ||
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runtime.GOOS == "hurd" ||
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runtime.GOOS == "illumos" ||
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runtime.GOOS == "linux" ||
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runtime.GOOS == "netbsd" ||
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runtime.GOOS == "openbsd" ||
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runtime.GOOS == "solaris" {
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currentPlatform = platformUnix
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return
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}
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if runtime.GOOS == "android" {
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currentPlatform = platformAndroid
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return
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}
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if isIOS {
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currentPlatform = platformIOS
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return
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}
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if runtime.GOOS == "darwin" {
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currentPlatform = platformMacOS
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return
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}
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}
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var additionalGLFWGamepads = []byte(`
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78696e70757401000000000000000000,XInput Gamepad (GLFW),platform:Windows,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b6,start:b7,leftstick:b8,rightstick:b9,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:a4,righttrigger:a5,dpup:h0.1,dpright:h0.2,dpdown:h0.4,dpleft:h0.8,
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78696e70757402000000000000000000,XInput Wheel (GLFW),platform:Windows,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b6,start:b7,leftstick:b8,rightstick:b9,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:a4,righttrigger:a5,dpup:h0.1,dpright:h0.2,dpdown:h0.4,dpleft:h0.8,
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78696e70757403000000000000000000,XInput Arcade Stick (GLFW),platform:Windows,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b6,start:b7,leftstick:b8,rightstick:b9,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:a4,righttrigger:a5,dpup:h0.1,dpright:h0.2,dpdown:h0.4,dpleft:h0.8,
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78696e70757404000000000000000000,XInput Flight Stick (GLFW),platform:Windows,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b6,start:b7,leftstick:b8,rightstick:b9,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:a4,righttrigger:a5,dpup:h0.1,dpright:h0.2,dpdown:h0.4,dpleft:h0.8,
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78696e70757405000000000000000000,XInput Dance Pad (GLFW),platform:Windows,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b6,start:b7,leftstick:b8,rightstick:b9,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:a4,righttrigger:a5,dpup:h0.1,dpright:h0.2,dpdown:h0.4,dpleft:h0.8,
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78696e70757406000000000000000000,XInput Guitar (GLFW),platform:Windows,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b6,start:b7,leftstick:b8,rightstick:b9,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:a4,righttrigger:a5,dpup:h0.1,dpright:h0.2,dpdown:h0.4,dpleft:h0.8,
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78696e70757408000000000000000000,XInput Drum Kit (GLFW),platform:Windows,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b6,start:b7,leftstick:b8,rightstick:b9,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:a4,righttrigger:a5,dpup:h0.1,dpright:h0.2,dpdown:h0.4,dpleft:h0.8,
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`)
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func init() {
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if _, err := Update(gamecontrollerdbTxt); err != nil {
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panic(err)
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}
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if _, err := Update(additionalGLFWGamepads); err != nil {
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panic(err)
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}
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}
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type mappingType int
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const (
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mappingTypeButton mappingType = iota
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mappingTypeAxis
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mappingTypeHat
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)
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const (
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HatUp = 1
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HatRight = 2
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HatDown = 4
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HatLeft = 8
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)
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type mapping struct {
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Type mappingType
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Index int
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AxisScale int
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AxisOffset int
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HatState int
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}
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var (
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gamepadNames = map[string]string{}
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gamepadButtonMappings = map[string]map[StandardButton]*mapping{}
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gamepadAxisMappings = map[string]map[StandardAxis]*mapping{}
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mappingsM sync.RWMutex
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)
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func processLine(line string, platform platform) error {
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line = strings.TrimSpace(line)
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if len(line) == 0 {
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return nil
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}
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if line[0] == '#' {
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return nil
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}
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tokens := strings.Split(line, ",")
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id := tokens[0]
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for _, token := range tokens[2:] {
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if len(token) == 0 {
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continue
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}
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tks := strings.Split(token, ":")
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// Note that the platform part is listed in the definition of SDL_GetPlatform.
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if tks[0] == "platform" {
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switch tks[1] {
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case "Windows":
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if platform != platformWindows {
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return nil
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}
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case "Mac OS X":
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if platform != platformMacOS {
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return nil
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}
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case "Linux":
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if platform != platformUnix {
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return nil
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}
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case "Android":
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if platform != platformAndroid {
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return nil
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}
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case "iOS":
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if platform != platformIOS {
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return nil
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}
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case "":
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// Allow any platforms
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default:
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return fmt.Errorf("gamepaddb: unexpected platform: %s", tks[1])
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}
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continue
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}
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gb, err := parseMappingElement(tks[1])
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if err != nil {
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return err
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}
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if b, ok := toStandardGamepadButton(tks[0]); ok {
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m, ok := gamepadButtonMappings[id]
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if !ok {
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m = map[StandardButton]*mapping{}
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gamepadButtonMappings[id] = m
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}
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m[b] = gb
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continue
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}
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if a, ok := toStandardGamepadAxis(tks[0]); ok {
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m, ok := gamepadAxisMappings[id]
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if !ok {
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m = map[StandardAxis]*mapping{}
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gamepadAxisMappings[id] = m
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}
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m[a] = gb
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continue
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}
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// The buttons like "misc1" are ignored so far.
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// There is no corresponding button in the Web standard gamepad layout.
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}
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gamepadNames[id] = tokens[1]
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return nil
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}
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func parseMappingElement(str string) (*mapping, error) {
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switch {
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case str[0] == 'a' || strings.HasPrefix(str, "+a") || strings.HasPrefix(str, "-a"):
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var tilda bool
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if str[len(str)-1] == '~' {
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str = str[:len(str)-1]
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tilda = true
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}
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min := -1
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max := 1
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numstr := str[1:]
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if str[0] == '+' {
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numstr = str[2:]
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min = 0
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} else if str[0] == '-' {
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numstr = str[2:]
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max = 0
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}
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scale := 2 / (max - min)
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offset := -(max + min)
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if tilda {
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scale = -scale
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offset = -offset
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}
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index, err := strconv.Atoi(numstr)
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if err != nil {
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return nil, err
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}
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return &mapping{
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Type: mappingTypeAxis,
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Index: index,
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AxisScale: scale,
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AxisOffset: offset,
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}, nil
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case str[0] == 'b':
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index, err := strconv.Atoi(str[1:])
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if err != nil {
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return nil, err
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}
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return &mapping{
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Type: mappingTypeButton,
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Index: index,
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}, nil
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case str[0] == 'h':
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tokens := strings.Split(str[1:], ".")
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if len(tokens) < 2 {
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return nil, fmt.Errorf("gamepaddb: unexpected hat: %s", str)
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}
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index, err := strconv.Atoi(tokens[0])
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if err != nil {
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return nil, err
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}
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hat, err := strconv.Atoi(tokens[1])
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if err != nil {
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return nil, err
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}
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return &mapping{
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Type: mappingTypeHat,
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Index: index,
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HatState: hat,
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}, nil
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}
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return nil, fmt.Errorf("gamepaddb: unepxected mapping: %s", str)
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}
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func toStandardGamepadButton(str string) (StandardButton, bool) {
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switch str {
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case "a":
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return StandardButtonRightBottom, true
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case "b":
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return StandardButtonRightRight, true
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case "x":
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return StandardButtonRightLeft, true
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case "y":
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return StandardButtonRightTop, true
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case "back":
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return StandardButtonCenterLeft, true
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case "start":
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return StandardButtonCenterRight, true
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case "guide":
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return StandardButtonCenterCenter, true
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case "leftshoulder":
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return StandardButtonFrontTopLeft, true
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case "rightshoulder":
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return StandardButtonFrontTopRight, true
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case "leftstick":
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return StandardButtonLeftStick, true
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case "rightstick":
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return StandardButtonRightStick, true
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case "dpup":
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return StandardButtonLeftTop, true
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case "dpright":
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return StandardButtonLeftRight, true
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case "dpdown":
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return StandardButtonLeftBottom, true
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case "dpleft":
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return StandardButtonLeftLeft, true
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case "lefttrigger":
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return StandardButtonFrontBottomLeft, true
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case "righttrigger":
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return StandardButtonFrontBottomRight, true
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default:
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return 0, false
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}
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}
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func toStandardGamepadAxis(str string) (StandardAxis, bool) {
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switch str {
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case "leftx":
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return StandardAxisLeftStickHorizontal, true
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case "lefty":
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return StandardAxisLeftStickVertical, true
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case "rightx":
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return StandardAxisRightStickHorizontal, true
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case "righty":
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return StandardAxisRightStickVertical, true
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default:
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return 0, false
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}
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}
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func buttonMappings(id string) map[StandardButton]*mapping {
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if m, ok := gamepadButtonMappings[id]; ok {
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return m
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}
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if currentPlatform == platformAndroid {
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// If the gamepad is not an HID API, use the default mapping on Android.
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if id[14] != 'h' {
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if addAndroidDefaultMappings(id) {
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return gamepadButtonMappings[id]
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}
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}
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}
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return nil
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}
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func axisMappings(id string) map[StandardAxis]*mapping {
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if m, ok := gamepadAxisMappings[id]; ok {
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return m
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}
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if currentPlatform == platformAndroid {
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// If the gamepad is not an HID API, use the default mapping on Android.
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if id[14] != 'h' {
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if addAndroidDefaultMappings(id) {
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return gamepadAxisMappings[id]
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}
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}
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}
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return nil
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}
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func HasStandardLayoutMapping(id string) bool {
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mappingsM.RLock()
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defer mappingsM.RUnlock()
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return buttonMappings(id) != nil || axisMappings(id) != nil
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}
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type GamepadState interface {
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Axis(index int) float64
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Button(index int) bool
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Hat(index int) int
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}
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func Name(id string) string {
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mappingsM.RLock()
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defer mappingsM.RUnlock()
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return gamepadNames[id]
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}
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func AxisValue(id string, axis StandardAxis, state GamepadState) float64 {
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mappingsM.RLock()
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defer mappingsM.RUnlock()
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mappings := axisMappings(id)
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if mappings == nil {
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return 0
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}
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mapping := mappings[axis]
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if mapping == nil {
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return 0
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}
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switch mapping.Type {
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case mappingTypeAxis:
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v := state.Axis(mapping.Index)*float64(mapping.AxisScale) + float64(mapping.AxisOffset)
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if v > 1 {
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return 1
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} else if v < -1 {
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return -1
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}
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return v
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case mappingTypeButton:
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if state.Button(mapping.Index) {
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return 1
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} else {
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return -1
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}
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case mappingTypeHat:
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if state.Hat(mapping.Index)&mapping.HatState != 0 {
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return 1
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} else {
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return -1
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}
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}
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return 0
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}
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func ButtonValue(id string, button StandardButton, state GamepadState) float64 {
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mappingsM.RLock()
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defer mappingsM.RUnlock()
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return buttonValue(id, button, state)
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}
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func buttonValue(id string, button StandardButton, state GamepadState) float64 {
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mappings := buttonMappings(id)
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if mappings == nil {
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return 0
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}
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mapping := mappings[button]
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if mapping == nil {
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return 0
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}
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switch mapping.Type {
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case mappingTypeAxis:
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v := state.Axis(mapping.Index)*float64(mapping.AxisScale) + float64(mapping.AxisOffset)
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if v > 1 {
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v = 1
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} else if v < -1 {
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v = -1
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}
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// Adjust [-1, 1] to [0, 1]
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return (v + 1) / 2
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case mappingTypeButton:
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if state.Button(mapping.Index) {
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return 1
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}
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return 0
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case mappingTypeHat:
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if state.Hat(mapping.Index)&mapping.HatState != 0 {
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return 1
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}
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return 0
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}
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return 0
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}
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func IsButtonPressed(id string, button StandardButton, state GamepadState) bool {
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// Use XInput's trigger dead zone.
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// See https://source.chromium.org/chromium/chromium/src/+/main:device/gamepad/public/cpp/gamepad.h;l=22-23;drc=6997f8a177359bb99598988ed5e900841984d242
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const threshold = 30.0 / 255.0
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mappingsM.RLock()
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defer mappingsM.RUnlock()
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mappings, ok := gamepadButtonMappings[id]
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if !ok {
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return false
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}
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mapping := mappings[button]
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if mapping == nil {
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return false
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}
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switch mapping.Type {
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case mappingTypeAxis:
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v := buttonValue(id, button, state)
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return v > threshold
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case mappingTypeButton:
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return state.Button(mapping.Index)
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case mappingTypeHat:
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return state.Hat(mapping.Index)&mapping.HatState != 0
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}
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return false
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}
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// Update adds new gamepad mappings.
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// The string must be in the format of SDL_GameControllerDB.
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func Update(mapping []byte) (bool, error) {
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mappingsM.Lock()
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defer mappingsM.Unlock()
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buf := bytes.NewBuffer(mapping)
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r := bufio.NewReader(buf)
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for {
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line, err := r.ReadString('\n')
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if err != nil && err != io.EOF {
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return false, err
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}
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if err := processLine(line, currentPlatform); err != nil {
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return false, err
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}
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if err == io.EOF {
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break
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}
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}
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return true, nil
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}
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func addAndroidDefaultMappings(id string) bool {
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// See https://github.com/libsdl-org/SDL/blob/120c76c84bbce4c1bfed4e9eb74e10678bd83120/include/SDL_gamecontroller.h#L655-L680
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const (
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SDLControllerButtonA = 0
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SDLControllerButtonB = 1
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SDLControllerButtonX = 2
|
|
SDLControllerButtonY = 3
|
|
SDLControllerButtonBack = 4
|
|
SDLControllerButtonGuide = 5
|
|
SDLControllerButtonStart = 6
|
|
SDLControllerButtonLeftStick = 7
|
|
SDLControllerButtonRightStick = 8
|
|
SDLControllerButtonLeftShoulder = 9
|
|
SDLControllerButtonRightShoulder = 10
|
|
SDLControllerButtonDpadUp = 11
|
|
SDLControllerButtonDpadDown = 12
|
|
SDLControllerButtonDpadLeft = 13
|
|
SDLControllerButtonDpadRight = 14
|
|
)
|
|
|
|
// See https://github.com/libsdl-org/SDL/blob/120c76c84bbce4c1bfed4e9eb74e10678bd83120/include/SDL_gamecontroller.h#L550-L560
|
|
const (
|
|
SDLControllerAxisLeftX = 0
|
|
SDLControllerAxisLeftY = 1
|
|
SDLControllerAxisRightX = 2
|
|
SDLControllerAxisRightY = 3
|
|
SDLControllerAxisTriggerLeft = 4
|
|
SDLControllerAxisTriggerRight = 5
|
|
)
|
|
|
|
// See https://github.com/libsdl-org/SDL/blob/120c76c84bbce4c1bfed4e9eb74e10678bd83120/src/joystick/SDL_gamecontroller.c#L468-L568
|
|
|
|
const faceButtonMask = ((1 << SDLControllerButtonA) |
|
|
(1 << SDLControllerButtonB) |
|
|
(1 << SDLControllerButtonX) |
|
|
(1 << SDLControllerButtonY))
|
|
|
|
buttonMask := uint16(id[12]) | (uint16(id[13]) << 8)
|
|
axisMask := uint16(id[14]) | (uint16(id[15]) << 8)
|
|
if buttonMask == 0 && axisMask == 0 {
|
|
return false
|
|
}
|
|
if buttonMask&faceButtonMask == 0 {
|
|
return false
|
|
}
|
|
|
|
gamepadButtonMappings[id] = map[StandardButton]*mapping{}
|
|
if buttonMask&(1<<SDLControllerButtonA) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonRightBottom] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonA,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonB) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonRightRight] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonB,
|
|
}
|
|
} else {
|
|
// Use the back button as "B" for easy UI navigation with TV remotes.
|
|
gamepadButtonMappings[id][StandardButtonRightRight] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonBack,
|
|
}
|
|
buttonMask &^= uint16(1) << SDLControllerButtonBack
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonX) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonRightLeft] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonX,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonY) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonRightTop] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonY,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonBack) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonCenterLeft] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonBack,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonGuide) != 0 {
|
|
// TODO: If SDKVersion >= 30, add this code:
|
|
//
|
|
// gamepadButtonMappings[id][StandardButtonCenterCenter] = &mapping{
|
|
// Type: mappingTypeButton,
|
|
// Index: SDLControllerButtonGuide,
|
|
// }
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonStart) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonCenterRight] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonStart,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonLeftStick) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonLeftStick] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonLeftStick,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonRightStick) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonRightStick] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonRightStick,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonLeftShoulder) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonFrontTopLeft] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonLeftShoulder,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonRightShoulder) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonFrontTopRight] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonRightShoulder,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonDpadUp) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonLeftTop] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonDpadUp,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonDpadDown) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonLeftBottom] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonDpadDown,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonDpadLeft) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonLeftLeft] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonDpadLeft,
|
|
}
|
|
}
|
|
if buttonMask&(1<<SDLControllerButtonDpadRight) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonLeftRight] = &mapping{
|
|
Type: mappingTypeButton,
|
|
Index: SDLControllerButtonDpadRight,
|
|
}
|
|
}
|
|
|
|
if axisMask&(1<<SDLControllerAxisLeftX) != 0 {
|
|
gamepadAxisMappings[id][StandardAxisLeftStickHorizontal] = &mapping{
|
|
Type: mappingTypeAxis,
|
|
Index: SDLControllerAxisLeftX,
|
|
AxisScale: 1,
|
|
AxisOffset: 0,
|
|
}
|
|
}
|
|
if axisMask&(1<<SDLControllerAxisLeftY) != 0 {
|
|
gamepadAxisMappings[id][StandardAxisLeftStickVertical] = &mapping{
|
|
Type: mappingTypeAxis,
|
|
Index: SDLControllerAxisLeftY,
|
|
AxisScale: 1,
|
|
AxisOffset: 0,
|
|
}
|
|
}
|
|
if axisMask&(1<<SDLControllerAxisRightX) != 0 {
|
|
gamepadAxisMappings[id][StandardAxisRightStickHorizontal] = &mapping{
|
|
Type: mappingTypeAxis,
|
|
Index: SDLControllerAxisRightX,
|
|
AxisScale: 1,
|
|
AxisOffset: 0,
|
|
}
|
|
}
|
|
if axisMask&(1<<SDLControllerAxisRightY) != 0 {
|
|
gamepadAxisMappings[id][StandardAxisRightStickVertical] = &mapping{
|
|
Type: mappingTypeAxis,
|
|
Index: SDLControllerAxisRightY,
|
|
AxisScale: 1,
|
|
AxisOffset: 0,
|
|
}
|
|
}
|
|
if axisMask&(1<<SDLControllerAxisTriggerLeft) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonFrontBottomLeft] = &mapping{
|
|
Type: mappingTypeAxis,
|
|
Index: SDLControllerAxisTriggerLeft,
|
|
AxisScale: 1,
|
|
AxisOffset: 0,
|
|
}
|
|
}
|
|
if axisMask&(1<<SDLControllerAxisTriggerRight) != 0 {
|
|
gamepadButtonMappings[id][StandardButtonFrontBottomRight] = &mapping{
|
|
Type: mappingTypeAxis,
|
|
Index: SDLControllerAxisTriggerRight,
|
|
AxisScale: 1,
|
|
AxisOffset: 0,
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|