除了跳跃输入外，我的刚体运动系统运行良好。当我按跳跃一次时，它会重复每一帧。感谢帮助。Unity 版本 2019.4.0f1。这是脚本的跳转部分：
void Update()
{
if (Input.GetButton("Jump") || Input.GetAxisRaw("Mouse ScrollWheel") != 0)
jump = true;
if (Input.GetKeyDown(KeyCode.LeftShift) && Input.GetAxisRaw("Vertical") == 1)
running = true;
crouching = (Input.GetKey(KeyCode.LeftControl) || Input.GetKey(KeyCode.C));
if (Input.GetKeyDown(KeyCode.V))
{
rb.AddForce(dir.normalized * 20f, ForceMode.VelocityChange);
}
dir = Direction();
}
'''
这是整个脚本：
'''
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class PlayerController : MonoBehaviour
{
//Ground
public float groundSpeed = 3.44f;
public float grAccel = 200f;
//Air
public float airSpeed = 3f;
public float airAccel = 0.3f;
public float airTargetSpeed = 15f;
//Wall
public float wallAccel = 5f;
public float wallStickiness = 10f;
public float wallStickDistance = 0.5f;
public float wallRunTilt = 15f;
public float wallFloorBarrier = 40f;
public float wallBanTime = 0.3f;
public float wallrunTime = 4f;
//Jump
public float jumpForce = 6f;
public float dashForce = 4f;
public float bhopLeniency = 0.1f;
public float dJumpBaseSpd = 8;
bool jump;
bool canDJump = false;
bool running = false;
bool crouching = false;
bool grounded = false;
Vector3 groundNormal;
Vector3 bannedGroundNormal;
float height;
Vector3 dir;
Vector3 spid;
public HudTextScript spidHud;
public HudTextScript spidUpHud;
private enum State
{
Walking,
Flying,
Wallruning
}
private State state;
//Timers
private Timer bhopLenTimer;
private Timer wallrunTimer;
private Timer wallDetachTimer;
private Timer wallBanTimer;
private Timer jumpTimer;
//GameObjects
public Collider wallRunCollider;
public CapsuleCollider heightCollider;
public Camera cam;
private Rigidbody rb;
private CapsuleCollider pm;
private PlayerCameraController camCon;
void Start()
{
//Timers
bhopLenTimer = gameObject.AddComponent<Timer>();
bhopLenTimer.SetTime(bhopLeniency);
wallBanTimer = gameObject.AddComponent<Timer>();
wallBanTimer.SetTime(wallBanTime);
wallDetachTimer = gameObject.AddComponent<Timer>();
wallDetachTimer.SetTime(0.2f);
wallrunTimer = gameObject.AddComponent<Timer>();
wallrunTimer.SetTime(wallrunTime);
jumpTimer = gameObject.AddComponent<Timer>();
jumpTimer.SetTime(0.05f);
//GameObjects
camCon = cam.GetComponent<PlayerCameraController>();
height = transform.GetChild(0).GetComponent<Renderer>().bounds.size.y;
rb = GetComponent<Rigidbody>();
pm = GetComponent<CapsuleCollider>();
camCon.SetTilt(0);
//Setting up beggining state
EnterFlying();
canDJump = true;
pm.material.dynamicFriction = 0;
pm.material.frictionCombine = PhysicMaterialCombine.Minimum;
}
void Update()
{
if (Input.GetButton("Jump") || Input.GetAxisRaw("Mouse ScrollWheel") != 0)
jump = true;
if (Input.GetKeyDown(KeyCode.LeftShift) && Input.GetAxisRaw("Vertical") == 1)
running = true;
crouching = (Input.GetKey(KeyCode.LeftControl) || Input.GetKey(KeyCode.C));
if (Input.GetKeyDown(KeyCode.V))
{
rb.AddForce(dir.normalized * 20f, ForceMode.VelocityChange);
}
dir = Direction();
}
private void FixedUpdate()
{
//if (crouching)
//{
// //THIS IS BROKEN AND OFTEN CAUSES UNCONTROLLED ROTATAION
// //Unity really doesnt like crouching and freeze rotation gets thrown out of the window when you crouch
// //Ive got no idea rn how to fix that because its an engine bug and shoudnt happen (ther are no warning in docs that changing colliders may cause this)
// //I noticed that when you already start spinning looking to the right will help you for some reason
// cam.transform.localPosition = new Vector3(0f, Mathf.Lerp(cam.transform.localPosition.y, 1.3f, 0.5f), 0f);
// heightCollider.center = new Vector3(0f, Mathf.Lerp(heightCollider.center.y, 0.8f, 0.3f), 0f);
//}
//else
//{
// cam.transform.localPosition = new Vector3(0f, Mathf.Lerp(cam.transform.localPosition.y, 1.8f, 0.5f), 0f);
// heightCollider.center = new Vector3(0f, Mathf.Lerp(heightCollider.center.y, 1.25f, 0.3f), 0f);
//}
if (wallDetachTimer.Done() && !wallBanTimer.Done())
{
bannedGroundNormal = groundNormal;
}
else
{
bannedGroundNormal = Vector3.zero;
}
if (state == State.Walking && rb.velocity.magnitude < 0.5f)
{
pm.material.dynamicFriction = 1f;
pm.material.frictionCombine = PhysicMaterialCombine.Maximum;
}
else
{
pm.material.dynamicFriction = 0f;
pm.material.frictionCombine = PhysicMaterialCombine.Minimum;
}
switch (state)
{
case State.Wallruning:
camCon.SetTilt(WallrunCameraAngle() * wallRunTilt);
Wallrun(dir, groundSpeed, grAccel);
break;
case State.Walking:
camCon.SetTilt(0);
if (crouching)
Crouch(dir, groundSpeed, grAccel);
else
Walk(dir, groundSpeed, grAccel);
break;
case State.Flying:
camCon.SetTilt(0);
AirMove(dir, airSpeed, airAccel);
break;
}
spidHud.SetValue(new Vector3(rb.velocity.x, 0, rb.velocity.z).magnitude);
spidUpHud.SetValue(rb.velocity.y);
jump = false;
running = false;
}
void OnCollisionStay(Collision collision)
{
if (collision.contactCount > 0)
{
float angle;
foreach (ContactPoint contact in collision.contacts)
{
angle = Vector3.Angle(contact.normal, Vector3.up);
if(angle < wallFloorBarrier)
{
EnterWalking();
grounded = true;
groundNormal = contact.normal;
return;
}
}
if (VectorToGround().magnitude > 0.2f)
{
grounded = false;
}
if (grounded == false)
{
foreach (ContactPoint contact in collision.contacts)
{
if (contact.thisCollider == wallRunCollider && state != State.Walking)
{
angle = Vector3.Angle(contact.normal, Vector3.up);
if (angle > wallFloorBarrier && angle < 120f)
{
grounded = true;
groundNormal = contact.normal;
EnterWallrun();
return;
}
}
}
}
}
}
void OnCollisionExit(Collision collision)
{
if (collision.contactCount == 0)
{
EnterFlying();
}
}
private Vector3 Direction()
{
float hAxis = Input.GetAxisRaw("Horizontal");
float vAxis = Input.GetAxisRaw("Vertical");
Vector3 direction = new Vector3(hAxis, 0, vAxis);
return rb.transform.TransformDirection(direction);
}
#region EnterState
private void EnterWalking()
{
if (state != State.Walking)
{
bhopLenTimer.StartTimer();
state = State.Walking;
}
}
private void EnterFlying( bool wishFly = false)
{
grounded = false;
if(state == State.Wallruning && VectorToWall().magnitude < wallStickDistance && !wishFly)
{
return;
}
else if (state != State.Flying)
{
wallBanTimer.StartTimer();
canDJump = true;
state = State.Flying;
}
}
private void EnterWallrun()
{
if (state != State.Wallruning && VectorToGround().magnitude > 0.2f && CanRunOnThisWall(bannedGroundNormal) && wallDetachTimer.Done())
{
wallrunTimer.StartTimer();
canDJump = true;
state = State.Wallruning;
}
}
#endregion
#region Movement
private void Wallrun(Vector3 wishDir, float maxSpeed, float Acceleration)
{
if (jump)
{
Vector3 direction = new Vector3(groundNormal.x, 1, groundNormal.z);
rb.AddForce(direction * jumpForce, ForceMode.Impulse);
EnterFlying(true);
}
else if (wallrunTimer.Done() || crouching)
{
rb.AddForce(groundNormal * 3f, ForceMode.Impulse);
EnterFlying(true);
}
else
{
//Variables
Vector3 distance = VectorToWall();
wishDir = wishDir.normalized;
wishDir = RotateToPlane(wishDir, -distance.normalized);
wishDir *= wallAccel;
Vector3 antiGravityForce = -Physics.gravity;
Vector3 verticalDamping;
//Calculating forces
if ( Mathf.Sign(rb.velocity.y) != Mathf.Sign(wishDir.y) && rb.velocity.y < 0)
{
verticalDamping = new Vector3(0, -rb.velocity.y * 0.1f, 0);
rb.AddForce(verticalDamping, ForceMode.VelocityChange);
}
else
{
verticalDamping = new Vector3(0, -rb.velocity.y * 0.5f, 0);
rb.AddForce(verticalDamping, ForceMode.Acceleration);
}
if(wishDir.y < -0.3)
{
wishDir.y *= 2f;
}
Vector3 horizontalDamping = new Vector3(-rb.velocity.x, 0, -rb.velocity.z);
if (Vector3.Dot(horizontalDamping, new Vector3(wishDir.x, 0, wishDir.z)) > 0f)
{
horizontalDamping *= (horizontalDamping - wishDir).magnitude;
}
else
{
horizontalDamping = Vector3.ClampMagnitude(horizontalDamping, 3);
}
if (wallrunTimer.FractionLeft() < 0.33)
{
antiGravityForce *= wallrunTimer.FractionLeft();
}
if (distance.magnitude > wallStickDistance) distance = Vector3.zero;
//Adding forces
rb.AddForce(antiGravityForce);
rb.AddForce(distance.normalized * wallStickiness * Mathf.Clamp(distance.magnitude / wallStickDistance, 0, 1), ForceMode.Acceleration);
rb.AddForce(horizontalDamping, ForceMode.Acceleration);
rb.AddForce(wishDir);
}
if (!grounded)
{
wallDetachTimer.StartTimer();
EnterFlying();
}
}
private void AirMove(Vector3 wishDir, float maxSpeed, float Acceleration)
{
if (jump)
{
DoubleJump(wishDir);
}
if (wishDir.magnitude != 0)
{
Vector3 spid = new Vector3(rb.velocity.x, 0, rb.velocity.z);
Vector3 projVel = Vector3.Project(rb.velocity, wishDir);
bool isAway = Vector3.Dot(wishDir, projVel) <= 0f;
if (projVel.magnitude < maxSpeed || isAway)
{
Vector3 vc = wishDir.normalized * Acceleration;
if (!isAway)
{
vc = Vector3.ClampMagnitude(vc, maxSpeed - projVel.magnitude);
}
else
{
vc = Vector3.ClampMagnitude(vc, maxSpeed + projVel.magnitude);
}
Vector2 force = ClampedAdditionVector(new Vector2(spid.x, spid.z) * 2f, new Vector2(vc.x, vc.z) * 2f);
Vector3 sum1 = spid + vc;
Vector3 sum2 = spid + new Vector3(force.x, 0, force.y);
if (sum1.magnitude > sum2.magnitude && spid.magnitude > airSpeed)
{
vc.x = force.x;
vc.z = force.y;
}
rb.AddForce(vc, ForceMode.VelocityChange);
}
}
if (grounded)
{
EnterWalking();
}
}
private void Walk(Vector3 wishDir, float maxSpeed, float Acceleration)
{
canDJump = true;
if (jump)
{
Jump();
EnterFlying();
}
else
{
if (running)
{
maxSpeed *= 1.5f;
}
wishDir = wishDir.normalized;
spid = new Vector3(rb.velocity.x, 0, rb.velocity.z);
spid = wishDir * maxSpeed - spid;
if (spid.magnitude < maxSpeed)
{
Acceleration *= spid.magnitude / maxSpeed;
}
else
{
if (new Vector3(rb.velocity.x, 0, rb.velocity.z).magnitude > airTargetSpeed * 0.9f && !bhopLenTimer.Done())
{
Acceleration = 0;
}
else
{
Acceleration *= 0.5f * maxSpeed / spid.magnitude;
}
}
spid = spid.normalized * Acceleration;
float magn = spid.magnitude;
spid = Vector3.ProjectOnPlane(spid, groundNormal);
spid = spid.normalized;
spid *= magn;
rb.AddForce(spid);
}
}
private void Crouch(Vector3 wishDir, float maxSpeed, float Acceleration)
{
if (jump)
{
Jump();
EnterFlying();
}
else
{
//No sliding for now
//spid = new Vector3(rb.velocity.x, 0, rb.velocity.z);
maxSpeed *= 0.5f;
//if (spid.magnitude < maxSpeed + 30)
//{
Acceleration *= 0.5f;
Walk(wishDir, maxSpeed, Acceleration);
//}
//else
//{
// spid = wishDir * maxSpeed - spid;
// Acceleration = spid.magnitude / maxSpeed;
// spid = spid.normalized * Acceleration;
// rb.AddForce(spid);
//}
//if (!grounded())
// EnterFlying();
}
}
private void Jump()
{
if (state == State.Walking && jumpTimer.Done())
{
rb.AddForce(0, jumpForce, 0, ForceMode.Impulse);
EnterFlying();
jumpTimer.StartTimer();
}
}
private void DoubleJump(Vector3 wishDir)
{
if (canDJump)
{
float tempJumpForce = jumpForce;
//Calculate upwards
float upSpeed = rb.velocity.y;
if (upSpeed < 0){
upSpeed = 0;
}
else if(upSpeed < dJumpBaseSpd)
{
upSpeed = dJumpBaseSpd;
tempJumpForce = 0;
}
//Calculate sideways
Vector3 jumpVector = Vector3.zero;
Vector2 force = Vector2.zero;
wishDir = wishDir.normalized;
Vector3 spid = new Vector3(rb.velocity.x, 0, rb.velocity.z);
if(spid.magnitude < airTargetSpeed)
{
jumpVector = wishDir * dashForce;
jumpVector -= spid;
}
else if (Vector3.Dot(spid.normalized, wishDir) > -0.4f)
{
jumpVector = wishDir * dashForce;
force = ClampedAdditionVector(new Vector2(rb.velocity.x, rb.velocity.z), new Vector2(jumpVector.x, jumpVector.z));
jumpVector.x = force.x;
jumpVector.z = force.y;
}
else
{
jumpVector = wishDir * spid.magnitude;
}
//Apply Jump
jumpVector.y = tempJumpForce;
rb.velocity = new Vector3(rb.velocity.x, upSpeed, rb.velocity.z);
rb.AddForce(jumpVector, ForceMode.Impulse);
canDJump = false;
}
}
#endregion
#region MathGenious
private Vector2 ClampedAdditionVector(Vector2 a, Vector2 b)
{
float k, x, y;
k = Mathf.Sqrt(Mathf.Pow(a.x, 2) + Mathf.Pow(a.y, 2)) / Mathf.Sqrt(Mathf.Pow(a.x + b.x, 2) + Mathf.Pow(a.y + b.y, 2));
x = k * (a.x + b.x) - a.x;
y = k * (a.y + b.y) - a.y;
return new Vector2(x, y);
}
private Vector3 RotateToPlane(Vector3 vect, Vector3 normal)
{
Vector3 rotDir = Vector3.ProjectOnPlane(normal, Vector3.up);
Quaternion rotation = Quaternion.AngleAxis(-90f, Vector3.up);
rotDir = rotation * rotDir;
float angle = -Vector3.Angle(Vector3.up, normal);
rotation = Quaternion.AngleAxis(angle, rotDir);
vect = rotation * vect;
return vect;
}
private float WallrunCameraAngle()
{
Vector3 rotDir = Vector3.ProjectOnPlane(groundNormal, Vector3.up);
Quaternion rotation = Quaternion.AngleAxis(-90f, Vector3.up);
rotDir = rotation * rotDir;
float angle = Vector3.SignedAngle(Vector3.up, groundNormal, Quaternion.AngleAxis(90f, rotDir) * groundNormal);
angle -= 90;
angle /= 180;
Vector3 playerDir = transform.forward;
Vector3 normal = new Vector3(groundNormal.x, 0, groundNormal.z);
return Vector3.Cross(playerDir, normal).y * angle;
}
private bool CanRunOnThisWall(Vector3 normal)
{
if(Vector3.Angle(normal, groundNormal) > 10 || wallBanTimer.Done())
{
return true;
}
else
{
return false;
}
}
private Vector3 VectorToWall()
{
Vector3 direction;
Vector3 position = transform.position + Vector3.up * 0.1f;
RaycastHit hit;
if (Physics.Raycast(position, -groundNormal, out hit, wallStickDistance) && Vector3.Angle(groundNormal, hit.normal) < 70)
{
groundNormal = hit.normal;
Physics.Raycast(position, -groundNormal, out hit, wallStickDistance);
direction = hit.point - position;
return direction;
}
else
{
return Vector3.positiveInfinity;
}
}
private Vector3 VectorToGround()
{
Vector3 position = transform.position;
RaycastHit hit;
if (Physics.Raycast(position, Vector3.down, out hit, wallStickDistance))
{
return hit.point - position;
}
else
{
return Vector3.positiveInfinity;
}
}
#endregion
#region Setters
public void AdjustGoundSpeed(float newValue)
{
groundSpeed = newValue;
}
public void AdjustGoundAcceleration(float newValue)
{
grAccel = newValue;
}
public void AdjustAirSpeed(float newValue)
{
airSpeed = newValue;
}
public void AdjustAirAccel(float newValue)
{
airAccel = newValue;
}
public void AdjustJumpForce(float newValue)
{
jumpForce = newValue;
}
public void AdjustBhopLeniency(float newValue)
{
bhopLeniency = newValue;
}
public void AdjustAirTargetSpeed(float newValue)
{
airTargetSpeed = newValue;
}
public void AdjustDashForce(float newValue)
{
dashForce = newValue;
}
public void AdjustDoubleJumpBaseSpeed(float newValue)
{
dJumpBaseSpd = newValue;
}
#endregion
}
'''
我认为问题是你使用的是GetButton而不是GetButtonDown，因此每次它进入FixedUpdate时，它都设置为false：
// ...
spidHud.SetValue(new Vector3(rb.velocity.x, 0, rb.velocity.z).magnitude);
spidUpHud.SetValue(rb.velocity.y);
jump = false;
running = false;
// ...
但在此处更新中再次变为 true：
// ...
void Update()
{
if (Input.GetButton("Jump") || Input.GetAxisRaw("Mouse ScrollWheel") != 0)
jump = true;
// ...
即使短按按钮，也可以多次调用Get 按钮，因为更新与帧速率相关联。我认为这可能会创建一个错误/真实的循环，因为更新和固定更新在不同的时刻被调用。
我希望这有所帮助！