add anchored and fixed camera behavior tests

Assets/scenes/anchoredCameraTest.unity.meta

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Assets/scenes/fixedCameraTest.unity.meta

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Assets/scripts/MainCameraBehavior.cs

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+using UnityEngine;
+using System.Collections;
+
+public class MainCameraBehavior : MonoBehaviour {
+
+    public Transform targetTransform;
+    public float y = 2.5f; // store the height value since it will never change
+    public float offsetZ = -2.2f;
+
+
+	
+////////////////////////////////////////////
+
+
+
+
+    public float smooth = 1.5f;         // The relative speed at which the camera will catch up.
+
+    
+    private Vector3 relCameraPos;       // The relative position of the camera from the targetTransform.
+    private float relCameraPosMag;      // The distance of the camera from the targetTransform.
+    private Vector3 newPos;             // The position the camera is trying to reach.
+
+
+    void Awake()
+    {
+        // Setting the relative position as the initial relative position of the camera in the scene.
+        relCameraPos = transform.position - targetTransform.position;
+        relCameraPosMag = relCameraPos.magnitude - 0.5f;
+    }
+
+
+    void FixedUpdate()
+    {
+        // The standard position of the camera is the relative position of the camera from the targetTransform.
+        Vector3 standardPos = targetTransform.position + relCameraPos;
+
+        // The abovePos is directly above the targetTransform at the same distance as the standard position.
+        Vector3 abovePos = targetTransform.position + Vector3.up * relCameraPosMag;
+
+        // An array of 5 points to check if the camera can see the targetTransform.
+        Vector3[] checkPoints = new Vector3[5];
+
+        // The first is the standard position of the camera.
+        checkPoints[0] = standardPos;
+
+        // The next three are 25%, 50% and 75% of the distance between the standard position and abovePos.
+        checkPoints[1] = Vector3.Lerp(standardPos, abovePos, 0.25f);
+        checkPoints[2] = Vector3.Lerp(standardPos, abovePos, 0.5f);
+        checkPoints[3] = Vector3.Lerp(standardPos, abovePos, 0.75f);
+
+        // The last is the abovePos.
+        checkPoints[4] = abovePos;
+
+        // Run through the check points...
+        for (int i = 0; i < checkPoints.Length; i++)
+        {
+            // ... if the camera can see the targetTransform...
+            if (ViewingPosCheck(checkPoints[i]))
+                // ... break from the loop.
+                break;
+        }
+
+        // Lerp the camera's position between it's current position and it's new position.
+        transform.position = Vector3.Lerp(transform.position, newPos, smooth * Time.deltaTime);
+
+        // Make sure the camera is looking at the targetTransform.
+        SmoothLookAt();
+    }
+
+
+    bool ViewingPosCheck(Vector3 checkPos)
+    {
+        RaycastHit hit;
+
+        // If a raycast from the check position to the targetTransform hits something...
+        if (Physics.Raycast(checkPos, targetTransform.position - checkPos, out hit, relCameraPosMag))
+            // ... if it is not the targetTransform...
+            if (hit.transform != targetTransform)
+                // This position isn't appropriate.
+                return false;
+
+        // If we haven't hit anything or we've hit the targetTransform, this is an appropriate position.
+        newPos = checkPos;
+        return true;
+    }
+
+
+    void SmoothLookAt()
+    {
+        // Create a vector from the camera towards the targetTransform.
+        Vector3 reltargetTransformPosition = targetTransform.position - transform.position;
+
+        // Create a rotation based on the relative position of the targetTransform being the forward vector.
+        Quaternion lookAtRotation = Quaternion.LookRotation(reltargetTransformPosition, Vector3.up);
+
+        // Lerp the camera's rotation between it's current rotation and the rotation that looks at the targetTransform.
+        transform.rotation = Quaternion.Lerp(transform.rotation, lookAtRotation, smooth * Time.deltaTime);
+    }
+
+
+}

Assets/scripts/MainCameraBehavior.cs.meta

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Assets/scripts/MainCameraBehaviorFixed.cs

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+using UnityEngine;
+using System.Collections;
+
+public class MainCameraBehaviorFixed : MonoBehaviour {
+
+    public Transform targetTransform;
+    public float y = 2.5f; // store the height value since it will never change
+    public float offsetZ = -2.2f;
+
+
+	
+////////////////////////////////////////////
+
+
+
+
+    public float smooth = 1.5f;         // The relative speed at which the camera will catch up.
+
+    
+    private Vector3 relCameraPos;       // The relative position of the camera from the targetTransform.
+    private float relCameraPosMag;      // The distance of the camera from the targetTransform.
+    private Vector3 newPos;             // The position the camera is trying to reach.
+
+
+    void Awake()
+    {
+        // Setting the relative position as the initial relative position of the camera in the scene.
+        relCameraPos = transform.position - targetTransform.position;
+        relCameraPosMag = relCameraPos.magnitude - 0.5f;
+    }
+
+
+    void FixedUpdate()
+    {
+        // The standard position of the camera is the relative position of the camera from the targetTransform.
+        Vector3 standardPos = targetTransform.position + relCameraPos;
+
+        // The abovePos is directly above the targetTransform at the same distance as the standard position.
+        Vector3 abovePos = targetTransform.position + Vector3.up * relCameraPosMag;
+
+        // An array of 5 points to check if the camera can see the targetTransform.
+        Vector3[] checkPoints = new Vector3[5];
+
+        // The first is the standard position of the camera.
+        checkPoints[0] = standardPos;
+
+        // The next three are 25%, 50% and 75% of the distance between the standard position and abovePos.
+        checkPoints[1] = Vector3.Lerp(standardPos, abovePos, 0.25f);
+        checkPoints[2] = Vector3.Lerp(standardPos, abovePos, 0.5f);
+        checkPoints[3] = Vector3.Lerp(standardPos, abovePos, 0.75f);
+
+        // The last is the abovePos.
+        checkPoints[4] = abovePos;
+
+        // Run through the check points...
+        for (int i = 0; i < checkPoints.Length; i++)
+        {
+            // ... if the camera can see the targetTransform...
+            if (ViewingPosCheck(checkPoints[i]))
+                // ... break from the loop.
+                break;
+        }
+
+        // Lerp the camera's position between it's current position and it's new position.
+        //transform.position = Vector3.Lerp(transform.position, newPos, smooth * Time.deltaTime);
+
+        // Make sure the camera is looking at the targetTransform.
+        SmoothLookAt();
+    }
+
+
+    bool ViewingPosCheck(Vector3 checkPos)
+    {
+        RaycastHit hit;
+
+        // If a raycast from the check position to the targetTransform hits something...
+        if (Physics.Raycast(checkPos, targetTransform.position - checkPos, out hit, relCameraPosMag))
+            // ... if it is not the targetTransform...
+            if (hit.transform != targetTransform)
+                // This position isn't appropriate.
+                return false;
+
+        // If we haven't hit anything or we've hit the targetTransform, this is an appropriate position.
+        newPos = checkPos;
+        return true;
+    }
+
+
+    void SmoothLookAt()
+    {
+        // Create a vector from the camera towards the targetTransform.
+        Vector3 reltargetTransformPosition = targetTransform.position - transform.position;
+
+        // Create a rotation based on the relative position of the targetTransform being the forward vector.
+        Quaternion lookAtRotation = Quaternion.LookRotation(reltargetTransformPosition, Vector3.up);
+
+        // Lerp the camera's rotation between it's current rotation and the rotation that looks at the targetTransform.
+        transform.rotation = Quaternion.Lerp(transform.rotation, lookAtRotation, smooth * Time.deltaTime);
+    }
+
+
+}

Assets/scripts/MainCameraBehaviorFixed.cs.meta

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+guid: 5d44c30752f2162458b447fc7aa8fa3d
+timeCreated: 1454198262
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