平滑转向C＃Unity

Question

我设法与我的卡丁车团结一致地向前前进。但是，当涉及到转弯时，这成为一个真正的挑战，我无法通过A＆amp平稳地转动我的车辆； D键。

请帮忙！

    using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class KartController : MonoBehaviour
    {
        private Rigidbody rb;
        // adding a speed variable
        public float speed = 3.0f;
        // adding a brake variable
        public float BrakeSpeed = 1.0f;
        // adding a rotation position variable
        
        // Start is called before
        void Start()
        {
            // refering to the game object component/class
            rb = GetComponent<Rigidbody>();
        }
    
        // Update is called once per frame
        void Update()
        {
            // adding movement for forward
            if (Input.GetKey(KeyCode.W))
            {
                rb.velocity = new Vector3(speed * -2, 0, 0);
            }

            // adding movement for backward
            if (Input.GetKeyDown(KeyCode.S))
            {
                rb.velocity = new Vector3(speed * 2, 0, 0); 
            }
    
            // adding movement for rotation
            float rotation_speed = 10f;
    
            if (Input.GetButtonDown("Horizontal"))
            {
                transform.Rotate(0.0f, -Input.GetAxis("Horizontal") * rotation_speed, 0.0f);
            }

            Debug.Log(rotation_speed);
        }
    }

Answer 1

您有几种不同的选择，并且正在混合一些东西。

您的卡丁车是具有物理模拟的僵化体。要向前或向后移动它，您将设置卡丁车速度。如果对象在物理模拟中具有速度，则将尝试移动，因为在模拟中求解了标准物理公式。 IE距离移动=速度 *

旋转时间适用相同的概念。刚性体的角速度。如果对象具有角速度，则尝试相应地旋转。

使用变换旋转，您将直接设置对象的旋转。您基本上是在跳过物理模拟。如果您想在比赛开始时重置卡丁车的方向和位置，但不适用于在模拟中控制卡丁车，这是很好的。

您可以直接设置rb。离速度类似于设置卡丁车方向速度的方式。

根据游戏类型和现实主义的类型，您可能需要考虑控制加速度而不是速度。甚至是轮廓派...（ https://docs.unity3d.com/manual/manual/wheelcollcolliderterorial.htmllorial.htmllorial..htmllliorial.htmllliorial.htmll ）

Answer 2

您可以尝试以下代码选车，希望对您有帮助，谢谢

       private float y;
      //vehicle control speed parameters
       private float speedOne = 0f; //Vehicle real-time speed
       private float speedMax = 120f; //The maximum speed of the vehicle
       private float speedMin = -20f; //The minimum speed of the vehicle (the maximum speed of reversing)
       private float speedUpA = 2f; //Vehicle acceleration acceleration (A key control)
       private float speedDownS = 4f; //Vehicle deceleration acceleration (S key control)
       private float speedTend = 0.5f; //Acceleration when no operation real-time speed tends to 0
       private float speedBack = 1f; //Vehicle reversing acceleration
      // Update is called once per frame
      void Update()
    {
        //mouse hide
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;
       //Press the W key and the speed does not reach the maximum, then the speed increases
        if (Input.GetKey(KeyCode.W) && speedOne < speedMax)
       {
          speedOne = speedOne + Time.deltaTime * speedUpA;
       }
       //Press the S key and the speed does not reach zero, then the speed is reduced
       if (Input.GetKey(KeyCode.S) && speedOne > 0f)
      {
         speedOne = speedOne - Time.deltaTime * speedDownS;
      }
     // No speed operation is performed and the speed is greater than the minimum speed, then the slow operation
      if (!Input.GetKey(KeyCode.W) && !Input.GetKey(KeyCode.S) && speedOne > 0f)
      {
         speedOne = speedOne - Time.deltaTime * speedTend;
      }
      if (!Input.GetKey(KeyCode.W) && !Input.GetKey(KeyCode.S) && speedOne < 0f)
      {
        speedOne = speedOne + Time.deltaTime * speedTend;
      }

      //When the S key is pressed and the speed does not reach the maximum reversing speed, and the vehicle is in a state where the vehicle can be reversed, the vehicle reverses
      if (Input.GetKey(KeyCode.S) && speedOne > speedMin && speedOne<=0)
      {
        speedOne = speedOne - Time.deltaTime * speedBack;
      }

        /// press space, the car stops
      if (Input.GetKey(KeyCode.Space) && speedOne != 0)
      {
        speedOne = Mathf.Lerp(speedOne, 0, 0.4f);
        if (speedOne < 5) speedOne = 0;
       }
      transform.Translate(Vector3.forward * speedOne * Time.deltaTime);
     //Use A and D to control the left and right rotation of the object
       if(speedOne>1f||speedOne<-1f)
       {
           y = Input.GetAxis("Horizontal") * 60f * Time.deltaTime;
           transform.Rotate(0, y, 0);
       }
    
       /* if (transform.eulerAngles.z != 0)
       {
           transform.eulerAngles = new Vector3(transform.eulerAngles.x, t 
           ransform.eulerAngles.y, 0);
       }*/
     }