145 lines
4.3 KiB
C#
145 lines
4.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using UnityEngine;
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/// <summary>
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/// A simple free camera to be added to a Unity game object.
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///
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/// Keys:
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/// wasd / arrows - movement
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/// q/e - up/down (local space)
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/// r/f - up/down (world space)
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/// pageup/pagedown - up/down (world space)
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/// hold shift - enable fast movement mode
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/// right mouse - enable free look
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/// mouse - free look / rotation
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///
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/// </summary>
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public class FreeCam : MonoBehaviour
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{
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/// <summary>
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/// Normal speed of camera movement.
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/// </summary>
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public float movementSpeed = 2f;
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/// <summary>
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/// Speed of camera movement when shift is held down,
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/// </summary>
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public float fastMovementSpeed = 15f;
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/// <summary>
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/// Sensitivity for free look.
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/// </summary>
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public float freeLookSensitivity = 2f;
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/// <summary>
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/// Amount to zoom the camera when using the mouse wheel.
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/// </summary>
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public float zoomSensitivity = 10f;
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/// <summary>
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/// Amount to zoom the camera when using the mouse wheel (fast mode).
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/// </summary>
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public float fastZoomSensitivity = 50f;
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/// <summary>
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/// Set to true when free looking (on right mouse button).
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/// </summary>
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private bool looking = false;
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void Update()
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{
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var fastMode = Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift);
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var movementSpeed = fastMode ? this.fastMovementSpeed : this.movementSpeed;
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if (Input.GetKey(KeyCode.A) || Input.GetKey(KeyCode.LeftArrow))
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{
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transform.position = transform.position + (-transform.right * movementSpeed * Time.deltaTime);
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}
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if (Input.GetKey(KeyCode.D) || Input.GetKey(KeyCode.RightArrow))
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{
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transform.position = transform.position + (transform.right * movementSpeed * Time.deltaTime);
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}
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if (Input.GetKey(KeyCode.W) || Input.GetKey(KeyCode.UpArrow))
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{
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transform.position = transform.position + (transform.forward * movementSpeed * Time.deltaTime);
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}
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if (Input.GetKey(KeyCode.S) || Input.GetKey(KeyCode.DownArrow))
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{
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transform.position = transform.position + (-transform.forward * movementSpeed * Time.deltaTime);
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}
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if (Input.GetKey(KeyCode.Q))
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{
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transform.position = transform.position + (transform.up * movementSpeed * Time.deltaTime);
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}
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if (Input.GetKey(KeyCode.E))
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{
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transform.position = transform.position + (-transform.up * movementSpeed * Time.deltaTime);
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}
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if (Input.GetKey(KeyCode.R) || Input.GetKey(KeyCode.PageUp))
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{
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transform.position = transform.position + (Vector3.up * movementSpeed * Time.deltaTime);
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}
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if (Input.GetKey(KeyCode.F) || Input.GetKey(KeyCode.PageDown))
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{
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transform.position = transform.position + (-Vector3.up * movementSpeed * Time.deltaTime);
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}
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if (looking)
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{
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float newRotationX = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * freeLookSensitivity;
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float newRotationY = transform.localEulerAngles.x - Input.GetAxis("Mouse Y") * freeLookSensitivity;
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transform.localEulerAngles = new Vector3(newRotationY, newRotationX, 0f);
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}
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float axis = Input.GetAxis("Mouse ScrollWheel");
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if (axis != 0)
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{
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var zoomSensitivity = fastMode ? this.fastZoomSensitivity : this.zoomSensitivity;
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transform.position = transform.position + transform.forward * axis * zoomSensitivity;
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}
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if (Input.GetKeyDown(KeyCode.Mouse1))
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{
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StartLooking();
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}
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else if (Input.GetKeyUp(KeyCode.Mouse1))
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{
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StopLooking();
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}
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}
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void OnDisable()
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{
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StopLooking();
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}
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/// <summary>
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/// Enable free looking.
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/// </summary>
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public void StartLooking()
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{
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looking = true;
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Cursor.visible = false;
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Cursor.lockState = CursorLockMode.Locked;
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}
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/// <summary>
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/// Disable free looking.
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/// </summary>
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public void StopLooking()
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{
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looking = false;
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Cursor.visible = true;
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Cursor.lockState = CursorLockMode.None;
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}
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} |