增加使用RootMotion驱动的角色移动

2 files changed, 39 insertions, 2 deletions

diff --git a/Assets/Scripts/AnimatorHandler.cs b/Assets/Scripts/AnimatorHandler.cs
index d95d12b..b71c573 100644
--- a/Assets/Scripts/AnimatorHandler.cs
+++ b/Assets/Scripts/AnimatorHandler.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
@@ -6,6 +7,7 @@ namespace DS
 {
     public class AnimatorHandler : MonoBehaviour
     {
+        public PlayerLocomotion playerLocomotion;
         public Animator animator;
         private int _vertical;
         private int _horizontal;
@@ -87,6 +89,20 @@ namespace DS
         {
             canRotate = false;
         }
+
+        private void OnAnimatorMove()
+        {
+            Debug.Log(animator.velocity);
+            playerLocomotion.rootMotion = animator.velocity;
+        }
+
+        private void OnDrawGizmos()
+        {
+            // 我们先假定 地板永远是朝上的
+            var normalVector = Vector3.up;
+            Vector3 rootMotionProjected = Vector3.ProjectOnPlane(animator.velocity, normalVector);
+            Gizmos.DrawLine(transform.position, transform.position + rootMotionProjected * 2f);
+        }
     }
 
 }
diff --git a/Assets/Scripts/PlayerLocomotion.cs b/Assets/Scripts/PlayerLocomotion.cs
index aaa0c12..9f058b0 100644
--- a/Assets/Scripts/PlayerLocomotion.cs
+++ b/Assets/Scripts/PlayerLocomotion.cs
@@ -9,6 +9,16 @@ namespace DS
 {
     public class PlayerLocomotion : MonoBehaviour
     {
+        // 是否使用根动画
+        [Range(0, 1)] public float rootMotionBlending = 1f;
+
+        public bool usingRootMotion
+        {
+            get => rootMotionBlending > 0.5f;
+            set => rootMotionBlending = value ? 0 : 1;
+        }
+        
+        [HideInInspector] public Vector3 rootMotion; 
         private Transform _cameraObject; //存储Camera的位置
         private InputHandler _inputHandler;
         private Vector3 _moveDirection;
@@ -35,6 +45,16 @@ namespace DS
 
         private void Update()
         {
+            UpdateCharacterMovement();
+        }
+
+        private void FixedUpdate()
+        {
+            
+        }
+
+        private void UpdateCharacterMovement()
+        {
             float delta = Time.deltaTime;
             _inputHandler.TickInput(delta);
 
@@ -45,8 +65,9 @@ namespace DS
 
             float speed = movementSpeed;
             _moveDirection *= speed;
-
-            Vector3 projectedVelocity = Vector3.ProjectOnPlane(_moveDirection, _normalVector);
+            
+            var baseVelocity = Vector3.Lerp(rootMotion, _moveDirection, rootMotionBlending);
+            Vector3 projectedVelocity = Vector3.ProjectOnPlane(baseVelocity, _normalVector);
             rigidbody.velocity = projectedVelocity;
             
             animatorHandler.UpdateAnimatorValues(_inputHandler.moveAmount,0);