Question

我在网上找到了这段代码

// Do not apply input if we are showing a level selection display
if(HaltUpdateMovement == true)
    return;

bool moveForward = false;
bool moveLeft    = false;
bool moveRight   = false;
bool moveBack    = false;

MoveScale = 1.0f;

// * * * * * * * * * * *
// Keyboard input

// Move

// WASD
if (Input.GetKeyDown(KeyCode.W)) moveForward = true;
if (Input.GetKey(KeyCode.A)) moveLeft    = true;
if (Input.GetKey(KeyCode.S)) moveBack    = true; 
if (Input.GetKey(KeyCode.D)) moveRight   = true; 
// Arrow keys
if (Input.GetKeyDown(KeyCode.UpArrow))    moveForward = true;
if (Input.GetKey(KeyCode.LeftArrow))  moveLeft    = true;
if (Input.GetKey(KeyCode.DownArrow))  moveBack    = true; 
if (Input.GetKey(KeyCode.RightArrow)) moveRight   = true; 

if ( (moveForward && moveLeft) || (moveForward && moveRight) ||
     (moveBack && moveLeft)    || (moveBack && moveRight) )
    MoveScale = 0.70710678f;

// No positional movement if we are in the air
if (!Controller.isGrounded) 
    MoveScale = 0.0f;

MoveScale *= DeltaTime;

// Compute this for key movement
float moveInfluence = Acceleration * 0.1f * MoveScale * MoveScaleMultiplier;

// Run!
if (Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift))
    moveInfluence *= 2.0f;

if(DirXform != null)
{
    if (moveForward)
        MoveThrottle += DirXform.TransformDirection(Vector3.forward * moveInfluence);
    if (moveBack)
        MoveThrottle += DirXform.TransformDirection(Vector3.back * moveInfluence) * BackAndSideDampen;
    if (moveLeft)
        MoveThrottle += DirXform.TransformDirection(Vector3.left * moveInfluence) * BackAndSideDampen;
    if (moveRight)
        MoveThrottle += DirXform.TransformDirection(Vector3.right * moveInfluence) * BackAndSideDampen;
}

我的问题是，一旦我按下w，我希望我的人不停地前进，但是他只是向前移动一个勾号然后再次停止，任何想法/帮助？

Answer 1

使用GetKey代替GetKeyDown。 GetKeyDown仅在用户按下键时在帧中返回true ，而只要键被保持，GetKey将继续返回true。

请参阅：http://docs.unity3d.com/Documentation/ScriptReference/Input.GetKey.html

并且：http://docs.unity3d.com/Documentation/ScriptReference/Input.GetKeyDown.html

Answer 2

moveForward在哪里设置为false？它似乎不应该发生。或者它的范围错误。它是局部变量（即在方法中声明）还是类中的字段（即直接在类中声明）？后者可能就是你要找的东西。

bool moveForward = false;

void Update() // or whatever method you had your code in
{
    bool moveLeft  = false;
    bool moveRight = false;
    bool moveBack  = false;
    // do stuff
}

玩家只能前进一个刻度线

2 个答案: