1 using System;
2 using UnityEngine;
3 using UnityStandardAssets.CrossPlatformInput;
4
5 namespace UnityStandardAssets.Cameras
6 {
7 public class FreeLookCam : PivotBasedCameraRig
8 {
9 // This script is designed to be placed on the root object of a camera rig,
10 // comprising 3 gameobjects, each parented to the next:
11
12 // Camera Rig
13 // Pivot
14 // Camera
15
16 [SerializeField] private float m_MoveSpeed = 1f; // How fast the rig will move to keep up with the target's position.
17 [Range(0f, 10f)] [SerializeField] private float m_TurnSpeed = 1.5f; // How fast the rig will rotate from user input.
18 [SerializeField] private float m_TurnSmoothing = 0.1f; // How much smoothing to apply to the turn input, to reduce mouse-turn jerkiness
19 [SerializeField] private float m_TiltMax = 75f; // The maximum value of the x axis rotation of the pivot.
20 [SerializeField] private float m_TiltMin = 45f; // The minimum value of the x axis rotation of the pivot.
21 [SerializeField] private bool m_LockCursor = false; // Whether the cursor should be hidden and locked.
22 [SerializeField] private bool m_VerticalAutoReturn = false; // set wether or not the vertical axis should auto return
23
24 private float m_LookAngle; // The rig's y axis rotation.
25 private float m_TiltAngle; // The pivot's x axis rotation.
26 private const float k_LookDistance = 100f; // How far in front of the pivot the character's look target is.
27 private Vector3 m_PivotEulers;
28 private Quaternion m_PivotTargetRot;
29 private Quaternion m_TransformTargetRot;
30
31 protected override void Awake()
32 {
33 base.Awake();
34 // Lock or unlock the cursor.
35 Cursor.lockState = m_LockCursor ? CursorLockMode.Locked : CursorLockMode.None;
36 Cursor.visible = !m_LockCursor;
37 m_PivotEulers = m_Pivot.rotation.eulerAngles;
38
39 m_PivotTargetRot = m_Pivot.transform.localRotation;
40 m_TransformTargetRot = transform.localRotation;
41 }
42
43
44 protected void Update()
45 {
46 HandleRotationMovement();
47 if (m_LockCursor && Input.GetMouseButtonUp(0))
48 {
49 Cursor.lockState = m_LockCursor ? CursorLockMode.Locked : CursorLockMode.None;
50 Cursor.visible = !m_LockCursor;
51 }
52 }
53
54
55 private void OnDisable()
56 {
57 Cursor.lockState = CursorLockMode.None;
58 Cursor.visible = true;
59 }
60
61
62 protected override void FollowTarget(float deltaTime)
63 {
64 if (m_Target == null) return;
65 // Move the rig towards target position.
66 transform.position = Vector3.Lerp(transform.position, m_Target.position, deltaTime*m_MoveSpeed);
67 }
68
69
70 private void HandleRotationMovement()
71 {
72 if(Time.timeScale < float.Epsilon)
73 return;
74
75 // Read the user input
76 var x = CrossPlatformInputManager.GetAxis("Mouse X");
77 var y = CrossPlatformInputManager.GetAxis("Mouse Y");
78
79 // Adjust the look angle by an amount proportional to the turn speed and horizontal input.
80 m_LookAngle += x*m_TurnSpeed;
81
82 // Rotate the rig (the root object) around Y axis only:
83 m_TransformTargetRot = Quaternion.Euler(0f, m_LookAngle, 0f);
84
85 if (m_VerticalAutoReturn)
86 {
87 // For tilt input, we need to behave differently depending on whether we're using mouse or touch input:
88 // on mobile, vertical input is directly mapped to tilt value, so it springs back automatically when the look input is released
89 // we have to test whether above or below zero because we want to auto-return to zero even if min and max are not symmetrical.
90 m_TiltAngle = y > 0 ? Mathf.Lerp(0, -m_TiltMin, y) : Mathf.Lerp(0, m_TiltMax, -y);
91 }
92 else
93 {
94 // on platforms with a mouse, we adjust the current angle based on Y mouse input and turn speed
95 m_TiltAngle -= y*m_TurnSpeed;
96 // and make sure the new value is within the tilt range
97 m_TiltAngle = Mathf.Clamp(m_TiltAngle, -m_TiltMin, m_TiltMax);
98 }
99
100 // Tilt input around X is applied to the pivot (the child of this object)
101 m_PivotTargetRot = Quaternion.Euler(m_TiltAngle, m_PivotEulers.y , m_PivotEulers.z);
102
103 if (m_TurnSmoothing > 0)
104 {
105 m_Pivot.localRotation = Quaternion.Slerp(m_Pivot.localRotation, m_PivotTargetRot, m_TurnSmoothing * Time.deltaTime);
106 transform.localRotation = Quaternion.Slerp(transform.localRotation, m_TransformTargetRot, m_TurnSmoothing * Time.deltaTime);
107 }
108 else
109 {
110 m_Pivot.localRotation = m_PivotTargetRot;
111 transform.localRotation = m_TransformTargetRot;
112 }
113 }
114 }
115 }
