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#if UNITY_EDITOR
using System.Collections.Generic;
using UnityEngine;
namespace Mountools.Tools
{
public class ToolFreeCamera : MonoBehaviour
{
[HideInInspector] public string cameraRotationX = "Mouse Y";
[HideInInspector] public string cameraRotationY = "Mouse X";
[HideInInspector] public string cameraRotationZ = "Horizontal";
[HideInInspector] public string cameraForwardAxisName = "Vertical";
[HideInInspector] public string cameraFastMoveButton = "Fire3";
[HideInInspector] public string enableRotationZ = "Fire1";
[HideInInspector] public string cameraRotationZRecover = "Jump";
public float cameraSensitivity = 150f;
public float cameraMovingSpeed = 20f;
public float cameraFastMovingSpeed = 50f;
public bool canCameraRotationZ;
// 场景内相机状态
private readonly Dictionary<Camera, bool> _cameraStatus = new();
private float _currentSpeed;
private Vector3 _currentRotation;
// 相机状态
public bool active => FindObjectOfType<ToolFreeCamera>() != null;
public static void FreeCameraEnter()
{
if (! Application.isPlaying) return;
if (FindObjectOfType<ToolFreeCamera>() != null) return;
GameObject gameObject = new GameObject("Free Camera");
Camera selfCamera = gameObject.AddComponent<Camera>();
ToolFreeCamera freeCamera = gameObject.AddComponent<ToolFreeCamera>();
Camera[] cameras = FindObjectsOfType<Camera>(true);
freeCamera._cameraStatus.Clear();
foreach (var cam in cameras)
{
if (cam == selfCamera) continue;
freeCamera._cameraStatus.Add(cam, cam.gameObject.activeSelf);
if (cam.gameObject.activeSelf)
{
var camTransform = cam.transform;
var selfCameraTransform = selfCamera.transform;
selfCameraTransform.position = camTransform.position;
freeCamera._currentRotation = camTransform.rotation.eulerAngles;
selfCamera.fieldOfView = cam.fieldOfView;
selfCamera.orthographic = cam.orthographic;
selfCamera.depth = cam.depth;
selfCamera.aspect = cam.aspect;
selfCamera.clearFlags = cam.clearFlags;
selfCamera.backgroundColor = cam.backgroundColor;
cam.gameObject.SetActive(false);
continue;
}
cam.gameObject.SetActive(false);
}
Cursor.lockState = CursorLockMode.Locked;
Cursor.visible = false;
}
public static void FreeCameraExit()
{
if (! Application.isPlaying) return;
var freeCamera = FindObjectOfType<ToolFreeCamera>();
if (freeCamera == null) return;
freeCamera.gameObject.SetActive(false);
foreach (var cameras in freeCamera._cameraStatus)
{
cameras.Key.gameObject.SetActive(cameras.Value);
}
Destroy(freeCamera.gameObject);
}
private void Update()
{
if (Input.GetKeyDown(KeyCode.Mouse0))
{
Cursor.lockState = CursorLockMode.Locked;
Cursor.visible = false;
}
if (Input.GetKeyDown(KeyCode.Mouse1) || Input.GetKeyDown(KeyCode.Escape))
{
if (Cursor.lockState == CursorLockMode.None)
{
FreeCameraExit();
}
else
{
Cursor.lockState = CursorLockMode.None;
Cursor.visible = true;
}
}
UpdateCameraRotation();
}
public void UpdateCameraRotation()
{
if (Cursor.lockState == CursorLockMode.None) return;
var camRotationZ = Input.GetAxis(cameraRotationZ);
var canRotationZ = canCameraRotationZ && Input.GetButton(enableRotationZ);
// Rotation Control
var rotationVector = new Vector3
{
x = Input.GetAxis(cameraRotationX),
y = Input.GetAxis(cameraRotationY),
z = canRotationZ ? camRotationZ : 0
};
// Change Rotation
var t = transform;
_currentRotation.x -= cameraSensitivity * Time.fixedDeltaTime * rotationVector.x;
_currentRotation.y += cameraSensitivity * Time.fixedDeltaTime * rotationVector.y;
_currentRotation.z -= cameraSensitivity * Time.fixedDeltaTime * rotationVector.z;
_currentRotation.x = ClampRotation(_currentRotation.x, -90, 90);
_currentRotation.z = ClampRotation(_currentRotation.z, -90, 90);
if (Input.GetButton(cameraRotationZRecover))
_currentRotation.z = Mathf.Lerp(_currentRotation.z, 0, 0.2f);
t.rotation = Quaternion.Euler(_currentRotation);
// Movement Control
var movementAxisForward = Input.GetAxis(cameraForwardAxisName);
var movementAxisRight = canRotationZ ? 0 : camRotationZ;
var speed = Input.GetButton(cameraFastMoveButton) ? cameraFastMovingSpeed : cameraMovingSpeed;
_currentSpeed = Mathf.Lerp(_currentSpeed, speed, 0.3f);
t.position += t.forward * (Time.deltaTime * _currentSpeed * movementAxisForward) +
t.right * (Time.deltaTime * _currentSpeed * movementAxisRight);
}
private static float ClampRotation(float n, float min, float max)
{
if (n < -360)
n += 360;
if (n > 360)
n-= 360;
return Mathf.Clamp(n, min, max);
}
}
}
#endif
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