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using System;
using UnityEngine;
using UnityEngine.InputSystem;
namespace GamePlay.Player
{
[RequireComponent(typeof(PlayerInput))]
[RequireComponent(typeof(Rigidbody))]
public class ChairMovement : MonoBehaviour
{
private PlayerInput _playerInput;
private Rigidbody _rigidbody;
private float _inputHorizontal;
private float _inputVertical;
public float maxMotorTorque = 400f;
public float maxSteerAngle = 90f;
public float brakeTorque = 1000f;
public WheelCollider frontLeftWheel;
public WheelCollider frontRightWheel;
public WheelCollider rearLeftWheel;
public WheelCollider rearRightWheel;
private void Awake()
{
_playerInput = GetComponent<PlayerInput>();
_rigidbody = GetComponent<Rigidbody>();
_playerInput.onActionTriggered += OnActionTriggered;
}
private void OnActionTriggered(InputAction.CallbackContext ctx)
{
if (ctx.action.name == "Move")
{
var moveInput = ctx.ReadValue<Vector2>();
_inputHorizontal = moveInput.x;
_inputVertical = moveInput.y;
}
}
private void FixedUpdate()
{
ApplySteering();
ApplyMotor();
ApplyBrakes();
}
private void ApplySteering()
{
float steer = maxSteerAngle * _inputHorizontal;
frontLeftWheel.steerAngle = steer;
frontRightWheel.steerAngle = steer;
}
private void ApplyMotor()
{
if (_inputVertical > 0)
{
float motor = maxMotorTorque * _inputVertical;
OperateWheel(w => w.motorTorque = motor);
// 释放刹车（因为在前进）
OperateWheel(w => w.brakeTorque = 0);
}
}
private void ApplyBrakes()
{
if (_inputVertical < 0)
{
if (_rigidbody.linearVelocity.z > 0.1f)
{
float brake = brakeTorque * Mathf.Abs(_inputVertical);
OperateWheel(w => w.brakeTorque = brake);
OperateWheel(w => w.motorTorque = 0);
}
else
{
OperateWheel(w => w.brakeTorque = 0);
OperateWheel(w => w.motorTorque = maxMotorTorque * _inputVertical);
}
}
else if (Mathf.Abs(_inputVertical) < 0.1f)
{
float parkingBrake = 10f;
OperateWheel(w => w.brakeTorque = parkingBrake);
OperateWheel(w => w.motorTorque = 0);
}
}
private void OperateWheel(Action<WheelCollider> o)
{
o(frontLeftWheel);
o(frontRightWheel);
o(frontLeftWheel);
o(frontRightWheel);
}
}
}
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