VolumetricLighting/Assets/Samples/Scripts/FreeCam.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine;
/// <summary>
/// A simple free camera to be added to a Unity game object.
///
/// Keys:
/// wasd / arrows - movement
/// q/e - up/down (local space)
/// r/f - up/down (world space)
/// pageup/pagedown - up/down (world space)
/// hold shift - enable fast movement mode
/// right mouse - enable free look
/// mouse - free look / rotation
///
/// </summary>
public class FreeCam : MonoBehaviour
{
/// <summary>
/// Normal speed of camera movement.
/// </summary>
public float movementSpeed = 10f;
/// <summary>
/// Speed of camera movement when shift is held down,
/// </summary>
public float fastMovementSpeed = 100f;
/// <summary>
/// Sensitivity for free look.
/// </summary>
public float freeLookSensitivity = 3f;
/// <summary>
/// Amount to zoom the camera when using the mouse wheel.
/// </summary>
public float zoomSensitivity = 10f;
/// <summary>
/// Amount to zoom the camera when using the mouse wheel (fast mode).
/// </summary>
public float fastZoomSensitivity = 50f;
/// <summary>
/// Set to true when free looking (on right mouse button).
/// </summary>
private bool looking = false;
void Update()
{
var fastMode = Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift);
var movementSpeed = fastMode ? this.fastMovementSpeed : this.movementSpeed;
if (Input.GetKey(KeyCode.A) || Input.GetKey(KeyCode.LeftArrow))
{
transform.position = transform.position + (-transform.right * movementSpeed * Time.deltaTime);
}
if (Input.GetKey(KeyCode.D) || Input.GetKey(KeyCode.RightArrow))
{
transform.position = transform.position + (transform.right * movementSpeed * Time.deltaTime);
}
if (Input.GetKey(KeyCode.W) || Input.GetKey(KeyCode.UpArrow))
{
transform.position = transform.position + (transform.forward * movementSpeed * Time.deltaTime);
}
if (Input.GetKey(KeyCode.S) || Input.GetKey(KeyCode.DownArrow))
{
transform.position = transform.position + (-transform.forward * movementSpeed * Time.deltaTime);
}
if (Input.GetKey(KeyCode.E))
{
transform.position = transform.position + (transform.up * movementSpeed * Time.deltaTime);
}
if (Input.GetKey(KeyCode.Q))
{
transform.position = transform.position + (-transform.up * movementSpeed * Time.deltaTime);
}
if (Input.GetKey(KeyCode.R) || Input.GetKey(KeyCode.PageUp))
{
transform.position = transform.position + (Vector3.up * movementSpeed * Time.deltaTime);
}
if (Input.GetKey(KeyCode.F) || Input.GetKey(KeyCode.PageDown))
{
transform.position = transform.position + (-Vector3.up * movementSpeed * Time.deltaTime);
}
if (looking)
{
float newRotationX = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * freeLookSensitivity;
float newRotationY = transform.localEulerAngles.x - Input.GetAxis("Mouse Y") * freeLookSensitivity;
transform.localEulerAngles = new Vector3(newRotationY, newRotationX, 0f);
}
float axis = Input.GetAxis("Mouse ScrollWheel");
if (axis != 0)
{
var zoomSensitivity = fastMode ? this.fastZoomSensitivity : this.zoomSensitivity;
transform.position = transform.position + transform.forward * axis * zoomSensitivity;
}
if (Input.GetKeyDown(KeyCode.Mouse1))
{
StartLooking();
}
else if (Input.GetKeyUp(KeyCode.Mouse1))
{
StopLooking();
}
}
void OnDisable()
{
StopLooking();
}
/// <summary>
/// Enable free looking.
/// </summary>
public void StartLooking()
{
looking = true;
Cursor.visible = false;
Cursor.lockState = CursorLockMode.Locked;
}
/// <summary>
/// Disable free looking.
/// </summary>
public void StopLooking()
{
looking = false;
Cursor.visible = true;
Cursor.lockState = CursorLockMode.None;
}
}