Unity technical manual - getKey and getaxis and getbutton

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Premise

This is what Xiao Kong insisted on writing Unity Novice series , Welcome to taste .

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Practice process

GetKey

GetKey When pressing and lifting the key of the corresponding parameter on the keyboard, return to true, Will trigger instantly N many times , Long press will trigger all the time , Not used at ordinary times , However, it may be used for functions like pressing and firing .

GetKeyDown When Press down Parameter corresponds to the name of the keyboard That frame return true, It is triggered only once at the moment of pressing , Commonly used .

GetKeyUp When lift Parameter corresponds to the name of the keyboard That frame return true, The lifting moment is triggered only once , Commonly used .

The above three method parameters are KeyCode Or key characters （ A lowercase letter ）, Contains a lot of , At the bottom of the article is the key description .

void Update(){    if (Input.GetKey(KeyCode.W))    {        print(" Press the keyboard w");    }    if (Input.GetKey("f5"))    {        print(" Press the keyboard f5");    }    if (Input.GetKeyDown(KeyCode.S))    {        print(" Press the keyboard s");    }    if (Input.GetKeyDown("d"))    {        print(" Press the keyboard d");    }    if (Input.GetKeyUp(KeyCode.Q))    {        print(" Press the keyboard q");    }    if (Input.GetKeyUp("tab"))    {        print(" Press the keyboard tab");    }}

GetAxis

Return from axisName The value of the identified virtual axis . The return is float type , stay -1 To 1 Between .

give an example ： The default value is 0, Hold down 【D】 or 【→】 From 0 Growth to 1, Finally keep 1, Release from 1 Return to 0. Others in the same way .

This value is independent of the frame rate , Disorderly worry about frame rate changes .

It mainly controls the upper, lower, left and right , It is often used to control character movement , The default is 【WASD】 Key and the left side of the keypad 【 The up and down or so 】 Arrow keys .

print(“ keyboard ： Vertical value -1 To 1：”+Input.GetAxis(“Vertical”));

print(“ keyboard ： Horizontal value -1 To 1：”+Input.GetAxis(“Horizontal”));

print(“ touch ： The mouse moves along the screen X Trigger when moving -1 To 1：”+Input.GetAxis(“Mouse X”));

print(“ touch ： The mouse moves along the screen Y Trigger when moving -1 To 1：”+Input.GetAxis(“Mouse Y”));

print(“ touch ： Triggered when the mouse scroll wheel scrolls -1 To 1：”+Input.GetAxis(“Mouse ScrollWheel”));

Default can be passed in Edit-Input Manager- Several input controls in .

After the weight removal, there are still 11 Parameters can be passed ：

Can be found in Edit-Project Setting-Input Set or modify , General default , After all, everyone has developed a certain habit of keyboard keys .

If the top GetAxis Smoothing is not enough for you , Want to handle smoothness yourself , It can be used. Input.GetAxisRaw function , This function does not press... By default 0 Or return to 0, The key range is -1 and 1.

GetButton

GetButtonDown It means that the mouse button will be pressed once

GetButton It means that the pressing process is executed many times and the mouse is pressed and held for a long time , It can be used for weapon firing function

GetButtonUp It means that it will only be executed once after the mouse is pressed and released

It's all about string Type string , Default can be passed in Edit-Input Manager- Several input controls in . and GetAxis Same parameter .

other

author ： Xiaokong and Xiaozhi Xiaokong
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