Note: Keyboard, joystick and gamepad input works only on the desktop version of Unity.

注意：键盘，操纵杆和游戏手柄输入仅工作于Unity桌面版本。

Unity supports keyboard, joystick and gamepad input.

Unity支持，键盘，操纵杆和游戏手柄输入。

Virtual axes and buttons can be created in the Input Manager, and end users can configure Keyboard input in a nice screen configuration dialog.

在输入管理器可以创建虚拟轴和按钮，并终端用户可以在屏幕配置对话框配置键盘输入。

You can setup joysticks, gamepads, keyboard, and mouse, then access them all through one simple scripting interface.

用户可以设置操纵杆，游戏手柄，键盘和鼠标，然后可以通过简单的脚本接口访问它们。

From scripts, all virtual axes are accessed by their name.

从脚本，所有虚拟轴通过它们的名字来访问。

Every project has the following default input axes when it's created:

当创建时，每个项目都具有下面的默认输入轴：

• Horizontal and Vertical are mapped to w, a, s, d and the arrow keys. 
  水平和垂直被映射到w, a, s, d键和方向键
• Fire1, Fire2, Fire3 are mapped to Control, Option (Alt), and Command, respectively. 
  Fire1, Fire2, Fire3被分别映射到Ctrl，Option（Alt）和Command键
• Mouse X and Mouse Y are mapped to the delta of mouse movement. 
  Mouse X 和 Mouse Y被映射到鼠标移动增量
• Window Shake X and Window Shake Y is mapped to the movement of the window. 
  Window Shake X 和 Window Shake Y 被映射到窗口的移动

Adding new Input Axes 添加新的输入轴

If you want to add new virtual axes go to the Edit->Project Settings->Input menu. Here you can also change the settings of each axis.

如果想添加新的虚拟轴，选择菜单Edit->Project Settings->Input menu。这里可以改变每个轴的设置。

You map each axis to two buttons on a joystick, mouse, or keyboard keys.

• Name 名称
  The name of the string used to check this axis from a script.
  名称用于从脚本使用这个轴
• Descriptive Name 描述名称
  Positive value name displayed in the input tab of the configuration dialog for standalone builds.
  正值名称显示于配置对话框的输入标签，用于独立版。
• Descriptive Negative Name 
  描述负名称
  Negative value name displayed in the Input tab of the Configuration dialog for standalone builds.
  负值名称显示于配置对话框的输入标签，用于独立版。
• Negative Button 负按钮
  The button used to push the axis in the negative direction.
  该按钮用于在负方向移动轴
• Positive Button 正按钮
  The button used to push the axis in the positive direction.
  该按钮用于在正方向移动轴
• Alt Negative Button 
  Alt负按钮
  Alternative button used to push the axis in the negative direction.
  Alt按钮用于在负方向移动轴
• Alt Positive Button 
  Alt正按钮
  Alternative button used to push the axis in the positive direction.
  Alt按钮用于在正方向移动轴
• Gravity 重力
  Speed in units per second that the axis falls toward neutral when no buttons are pressed.
  当没有按钮被按下，在单位每秒速度，轴下降到0。
• Dead 死亡
  Size of the analog dead zone. All analog device values within this range result map to neutral.
  模拟的死区大小。 设定范围内所有模拟设备的值为0。
• Sensitivity 灵敏度
  Speed in units per second that the the axis will move toward the target value. This is for digital devices only.
  在单位每秒速度，轴将移向目标值。这近用于数码设备。
• Snap 捕捉
  If enabled, the axis value will reset to zero when pressing a button of the opposite direction.
  如果启用，当按下相反方向的按钮，该轴值将重设为0。
• Invert 反向
  If enabled, the Negative Buttons provide a positive value, and vice-versa.
  如果启用，负按钮将提供一个正值，反之亦然。
• Type 类型
  The type of inputs that will control this axis. 控制轴的输入设备类型
• Axis 轴
  The axis of a connected device that will control this axis. 连接设备的轴将控制这个轴
• Joy Num 操作杆
  The connected Joystick that will control this axis. 连接操纵杆将控制这个轴

Use these settings to fine tune the look and feel of input. They are all documented with tooltips in the Editor as well.

使用这些设置来进行效果和输入的感觉微调。它们在编辑器中都带有提示。

Using Input Axes from Scripts 从脚本使用输入轴

You can query the current state from a script like this:

从像这样的脚本，可以查询当前状态：

value = Input.GetAxis ("Horizontal");

An axis has a value between -1 and 1. The neutral position is 0. This is the case for joystick input and keyboard input.

一个轴具有-1和1之间的值。中间位置为0。这种情况用于操纵杆输入和键盘输入。

However, Mouse Delta and Window Shake Delta are how much the mouse or window moved during the last frame. This means it can be larger than 1 or smaller than -1 when the user moves the mouse quickly.

然而，鼠标增量和Window Shake增量是鼠标或窗口从上一帧到现在的移动。这意思是当用户快速移动鼠标时，它可能大于1或小于-1。

It is possible to create multiple axes with the same name. When getting the input axis, the axis with the largest absolute value will be returned. This makes it possible to assign more than one input device to one axis name. For example, create one axis
for keyboard input and one axis for joystick input with the same name. If the user is using the joystick, input will come from the joystick, otherwise input will come from the keyboard. This way you don't have to consider where the input comes from when writing
scripts.

它可以创建具有相同名称的多个轴。当获取输入轴，该轴带有最大绝对值将被返回。这可以使得分配多个输入设备为一个轴名。例如，创建一个轴为键盘输入，一个轴为操纵杆输入，具有相同的名称。如果用户使用操纵杆，输入将来自操纵杆，否则输入将来自键盘。这样，当写脚本时就不必考虑输入来自什么设备了。

Button Names 按钮名称

To map a key to an axis, you have to enter the key's name in the Positive Button or Negative Button property in the Inspector.

要映射一个键到一个轴，在检视面板的正按钮或负按钮的属性中，必须输入键的名称。

The names of keys follow this convention:

输入键的名称如下：

• Normal keys: "a", "b", "c" ... 
  标准键：
• Number keys: "1", "2", "3", ... 
  数字键：
• Arrow keys: "up", "down", "left", "right" 
  方向键：
• Keypad keys: "[1]", "[2]", "[3]", "[+]", "[equals]" 
  小键盘键：
• Modifier keys: "right shift", "left shift", "right ctrl", "left ctrl", "right alt", "left alt", "right cmd", "left cmd" 
  修改键：
• Mouse Buttons: "mouse 0", "mouse 1", "mouse 2", ... 
  鼠标按钮：
• Joystick Buttons (from any joystick): "joystick button 0", "joystick button 1", "joystick button 2", ... 
  操纵杆按钮（从任意操纵杆）：
• Joystick Buttons (from a specific joystick): "joystick button 0", "joystick button 1", "joystick 1 button 0", ... 
  操纵杆按钮（从指定操纵杆）：
• Special keys: "backspace", "tab", "return", "escape", "space", "delete", "enter", "insert", "home", "end", "page up", "page down" 
  特殊键：
• Function keys: "f1", "f2", "f3", ... 
  功能键：

The names used to identify the keys are the same in the scripting interface and the Inspector.

在脚本和检视面板，用来识别键的名称是一样的。

value = Input.GetKey ("a");

Android devices don't have a unified limit on how many fingers they track. Instead, it varies from device to device and can be anything from two-touch on older devices to five fingers on some newer devices.

Android设备，能跟踪多少个手指没有统一的限制。相反，在不同的设备上可能是不同的，从老设备的两指触控，到新设备的五指触控。