Unity中，3D角色的移动（斜面上）、跳跃、冲刺

IT圈老男孩1 · 发表于 2022-7-12 10:01

示意

3d角色移动.gif

说明

可控制角色在xoz平面内移动。当处于斜面上时，可沿斜面移动。

image.png

可控制角色从地面上跳起、向前冲刺、向下冲刺。
代码

角色移动：PlayerMoveCtr
using System;using System.Collections;using System.Collections.Generic;using UnityEngine;public class PlayerMoveCtr : MonoBehaviour{ [SerializeField] private Rigidbody _rb; public bool IsInDash{ get; private set; } [SerializeField] private float _jumpForce = 15f; // 与地面之间的高度大于该值时，认为在空中 [SerializeField] private float _checkInAirDistance = 0.6f; [SerializeField] private float _moveSpeed = 5f; [SerializeField] private float _dashMaxTime = 0.1f; [SerializeField] private float _dashMaxDistance = 6f; [SerializeField] private float _gravityFactorWhenRise = 1f; [SerializeField] private float _gravityFactorWhenFall = 2f; private int GroundLayerMask {       get { return 1 << LayerMask.NameToLayer("Ground"); } } private Vector2 _moveDir; public event Action<bool> MoveInXZEvent; public event Action DashDownEvent; public event Action DashForwardEvent; private void Start() {       Init(); } private void Update()    {       AdjustForwardDir();       AdjustGravity(); } private void FixedUpdate()    {       Move(_moveDir); } private void OnDestroy() {       Destroy(); }       public void Init() {          }       public void Destroy() {          } public void MoveInXZ(Vector2 dir) {       _moveDir = dir; } private void Move(Vector2 dir) {       if (!IsInDash && dir != Vector2.zero)       {          transform.forward = (new Vector3(dir.x, 0, dir.y)).normalized;          AdjustForwardDir();          _rb.MovePosition(transform.position + transform.forward * _moveSpeed * Time.fixedDeltaTime);          MoveInXZEvent?.Invoke(true);       } } public void StopMoveInXZ() {       _moveDir = Vector2.zero;       MoveInXZEvent?.Invoke(false); } private void AdjustForwardDir() {       var planeNormalDir = Vector3.up;       if (Physics.Raycast(transform.position, Vector3.down, out RaycastHit hit, 1, GroundLayerMask))       {          planeNormalDir = hit.normal;       }       var forward = Vector3.ProjectOnPlane(transform.forward, planeNormalDir);       transform.rotation = Quaternion.LookRotation(forward, planeNormalDir); } private void AdjustGravity() {       float gravityFactor = 0;       if (_rb.velocity.y > 0)       {          gravityFactor = _gravityFactorWhenRise;       }       else if (_rb.velocity.y < 0)       {          gravityFactor = _gravityFactorWhenFall;       }       if (gravityFactor != 0)       {          _rb.AddForce(Vector3.up * gravityFactor * Physics.gravity.y, ForceMode.Force);       } } private void StopMove() {       _rb.velocity = Vector3.zero;       _rb.angularVelocity = Vector3.zero; } public void MoveInYDir() {       if (!IsInDash)       {          if (IsInAir(out float height))          {             // 快速下冲             DashDown(height);          }          else          {             Jump();          }       } } private void DashDown(float distance) {       StartCoroutine(DashCoroutine(transform.up * -1, distance, _dashMaxTime));       DashDownEvent?.Invoke(); } private void Jump() {       _rb.AddForce(Vector3.up * _jumpForce, ForceMode.Impulse); } public void DashForward() {       if (!IsInDash)       {          StartCoroutine(DashCoroutine(transform.forward, _dashMaxDistance, _dashMaxTime));          DashForwardEvent?.Invoke();       } } IEnumerator DashCoroutine(Vector3 dir, float maxDistance, float maxDuration) {       IsInDash = true;       var beginPos = transform.position;       var endPos = beginPos + dir * maxDistance;       if (Physics.Linecast(beginPos, endPos, out RaycastHit hitInfo, GroundLayerMask))       {          endPos = hitInfo.point;       }       float distance = Vector3.Distance(beginPos, endPos);       float duration = distance / maxDistance * maxDuration;       float timer = 0f;       while (timer < duration)       {          _rb.MovePosition(Vector3.Lerp(beginPos, endPos, timer / duration));          yield return null;          timer += Time.deltaTime;       }       _rb.MovePosition(endPos);       IsInDash = false;       StopMove(); } // 距离地面的高度为 public bool IsInAir(out float height) {       height = Mathf.Infinity;       var hits = Physics.RaycastAll(transform.position, transform.up*-1, 100, GroundLayerMask);       foreach (var hit in hits)       {             // 是否是地面          if (hit.distance < height)          {             height = hit.distance;          }       }       return height > _checkInAirDistance; }}
角色移动控制（当前使用键盘）：PlayerMoveKeyboardInput
using System.Collections;using System.Collections.Generic;using UnityEngine;public class PlayerMoveKeyboardInput : MonoBehaviour{ private PlayerMoveCtr _ctr; private void Start() {       Init(FindObjectOfType<PlayerMoveCtr>()); } private void Update() {       var x = Input.GetAxis("Horizontal");       var y = Input.GetAxis("Vertical");       var moveDir = (new Vector2(x, y));       if (moveDir != Vector2.zero)       {          _ctr.MoveInXZ(moveDir.normalized);       }       else       {          _ctr.StopMoveInXZ();       }       if (Input.GetKeyDown(KeyCode.Space))       {          _ctr.MoveInYDir();       }       if (Input.GetKeyDown(KeyCode.Q))       {          _ctr.DashForward();       } } private void OnDestroy() {       Destroy(); } public void Init(PlayerMoveCtr ctr) {       _ctr = ctr; } public void Destroy() {       _ctr = null; }}
相机跟随：CamCtr
using System.Collections;using System.Collections.Generic;using UnityEngine;public class CamCtr : MonoBehaviour{ [SerializeField] private Transform _target; private Vector3 _offset; public bool IsInFollow { get; private set; } [SerializeField] private float _moveSpeed = 10; private Vector3 TargetPos { get { return _target.position - _offset; } } private void Start() {       Init(); } private void FixedUpdate() {       if (IsInFollow)       {          Follow();       } } private void OnDestroy() {       Destroy(); } public void Init() {       _offset = _target.position - transform.position;       StartFollow(); } public void Destroy() { } public void StartFollow() {       IsInFollow = true; } public void StopFollow() {       IsInFollow = false; } private void Follow() {       transform.position = Vector3.Lerp(transform.position, TargetPos, _moveSpeed * Time.fixedDeltaTime); }}

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Unity中，3D角色的移动（斜面上）、跳跃、冲刺

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