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Assets/Standard Assets/Cameras/Scripts/FreeLookCam.cs

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+using System;
+using UnityEngine;
+using UnityStandardAssets.CrossPlatformInput;
+
+namespace UnityStandardAssets.Cameras
+{
+    public class FreeLookCam : PivotBasedCameraRig
+    {
+        // This script is designed to be placed on the root object of a camera rig,
+        // comprising 3 gameobjects, each parented to the next:
+
+        // 	Camera Rig
+        // 		Pivot
+        // 			Camera
+
+        [SerializeField] private float m_MoveSpeed = 1f;                      // How fast the rig will move to keep up with the target's position.
+        [Range(0f, 10f)] [SerializeField] private float m_TurnSpeed = 1.5f;   // How fast the rig will rotate from user input.
+        [SerializeField] private float m_TurnSmoothing = 0.0f;                // How much smoothing to apply to the turn input, to reduce mouse-turn jerkiness
+        [SerializeField] private float m_TiltMax = 75f;                       // The maximum value of the x axis rotation of the pivot.
+        [SerializeField] private float m_TiltMin = 45f;                       // The minimum value of the x axis rotation of the pivot.
+        [SerializeField] private bool m_LockCursor = false;                   // Whether the cursor should be hidden and locked.
+        [SerializeField] private bool m_VerticalAutoReturn = false;           // set wether or not the vertical axis should auto return
+
+        private float m_LookAngle;                    // The rig's y axis rotation.
+        private float m_TiltAngle;                    // The pivot's x axis rotation.
+        private const float k_LookDistance = 100f;    // How far in front of the pivot the character's look target is.
+		private Vector3 m_PivotEulers;
+		private Quaternion m_PivotTargetRot;
+		private Quaternion m_TransformTargetRot;
+
+        protected override void Awake()
+        {
+            base.Awake();
+            // Lock or unlock the cursor.
+            Cursor.lockState = m_LockCursor ? CursorLockMode.Locked : CursorLockMode.None;
+            Cursor.visible = !m_LockCursor;
+			m_PivotEulers = m_Pivot.rotation.eulerAngles;
+
+	        m_PivotTargetRot = m_Pivot.transform.localRotation;
+			m_TransformTargetRot = transform.localRotation;
+        }
+
+
+        protected void Update()
+        {
+            HandleRotationMovement();
+            if (m_LockCursor && Input.GetMouseButtonUp(0))
+            {
+                Cursor.lockState = m_LockCursor ? CursorLockMode.Locked : CursorLockMode.None;
+                Cursor.visible = !m_LockCursor;
+            }
+        }
+
+
+        private void OnDisable()
+        {
+            Cursor.lockState = CursorLockMode.None;
+            Cursor.visible = true;
+        }
+
+
+        protected override void FollowTarget(float deltaTime)
+        {
+            if (m_Target == null) return;
+            // Move the rig towards target position.
+            transform.position = Vector3.Lerp(transform.position, m_Target.position, deltaTime*m_MoveSpeed);
+        }
+
+
+        private void HandleRotationMovement()
+        {
+			if(Time.timeScale < float.Epsilon)
+			return;
+
+            // Read the user input
+            var x = CrossPlatformInputManager.GetAxis("Mouse X");
+            var y = CrossPlatformInputManager.GetAxis("Mouse Y");
+
+            // Adjust the look angle by an amount proportional to the turn speed and horizontal input.
+            m_LookAngle += x*m_TurnSpeed;
+
+            // Rotate the rig (the root object) around Y axis only:
+            m_TransformTargetRot = Quaternion.Euler(0f, m_LookAngle, 0f);
+
+            if (m_VerticalAutoReturn)
+            {
+                // For tilt input, we need to behave differently depending on whether we're using mouse or touch input:
+                // on mobile, vertical input is directly mapped to tilt value, so it springs back automatically when the look input is released
+                // 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.
+                m_TiltAngle = y > 0 ? Mathf.Lerp(0, -m_TiltMin, y) : Mathf.Lerp(0, m_TiltMax, -y);
+            }
+            else
+            {
+                // on platforms with a mouse, we adjust the current angle based on Y mouse input and turn speed
+                m_TiltAngle -= y*m_TurnSpeed;
+                // and make sure the new value is within the tilt range
+                m_TiltAngle = Mathf.Clamp(m_TiltAngle, -m_TiltMin, m_TiltMax);
+            }
+
+            // Tilt input around X is applied to the pivot (the child of this object)
+			m_PivotTargetRot = Quaternion.Euler(m_TiltAngle, m_PivotEulers.y , m_PivotEulers.z);
+
+			if (m_TurnSmoothing > 0)
+			{
+				m_Pivot.localRotation = Quaternion.Slerp(m_Pivot.localRotation, m_PivotTargetRot, m_TurnSmoothing * Time.deltaTime);
+				transform.localRotation = Quaternion.Slerp(transform.localRotation, m_TransformTargetRot, m_TurnSmoothing * Time.deltaTime);
+			}
+			else
+			{
+				m_Pivot.localRotation = m_PivotTargetRot;
+				transform.localRotation = m_TransformTargetRot;
+			}
+        }
+    }
+}