feat: fish following spline

Author: pyoneerC

Assets/Scenes/Reparation.unity

@@ -9747,23 +9747,23 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 5146681718063874739, guid: 0cd2fb479650c304eac7efd1ad26408e, type: 3}
       propertyPath: m_LocalPosition.x
-      value: -29.205198
+      value: 0
       objectReference: {fileID: 0}
     - target: {fileID: 5146681718063874739, guid: 0cd2fb479650c304eac7efd1ad26408e, type: 3}
       propertyPath: m_LocalPosition.y
-      value: 9.15306
+      value: 0
       objectReference: {fileID: 0}
     - target: {fileID: 5146681718063874739, guid: 0cd2fb479650c304eac7efd1ad26408e, type: 3}
       propertyPath: m_LocalPosition.z
-      value: -51.334007
+      value: 0
       objectReference: {fileID: 0}
     - target: {fileID: 5146681718063874739, guid: 0cd2fb479650c304eac7efd1ad26408e, type: 3}
       propertyPath: m_LocalRotation.w
       value: -1
       objectReference: {fileID: 0}
     - target: {fileID: 5146681718063874739, guid: 0cd2fb479650c304eac7efd1ad26408e, type: 3}
       propertyPath: m_LocalRotation.x
-      value: -0
+      value: 0
       objectReference: {fileID: 0}
     - target: {fileID: 5146681718063874739, guid: 0cd2fb479650c304eac7efd1ad26408e, type: 3}
       propertyPath: m_LocalRotation.y
@@ -9838,6 +9838,7 @@ MonoBehaviour:
   swimSpeed: 3
   rotationSpeed: 5
   loop: 1
+  rotationOffset: {x: 0, y: -90, z: 0}
 --- !u!4 &509367958 stripped
 Transform:
   m_CorrespondingSourceObject: {fileID: 5146681718063874739, guid: 0cd2fb479650c304eac7efd1ad26408e, type: 3}

Assets/Scripts/Creatures/Fish.cs

@@ -13,7 +13,9 @@ public class Fish : MonoBehaviour
     private float _progress; // Progress along the spline (0 to 1)
     private SplineContainer _splineContainer;
     private Spline _spline;
-    private Vector3 _previousPosition;
+
+    // Offset to correct fish orientation
+    public Vector3 rotationOffset = new Vector3(0f, -90f, 0f); // 90-degree Y-axis offset to face spline direction correctly
 
     private void Start()
     {
@@ -35,7 +37,6 @@ private void Start()
 
         // Get the spline from the container
         _spline = _splineContainer.Spline;
-        _previousPosition = transform.position;
     }
 
     private void Update()
@@ -50,18 +51,21 @@ private void Update()
             _progress = loop ? 0f : 1f; // Loop or clamp progress
         }
 
-        // Get the position and tangent from the spline
+        // Get the global position and tangent from the spline
         Vector3 currentPosition = _spline.EvaluatePosition(_progress);
         Vector3 tangent = _spline.EvaluateTangent(_progress);
 
-        // Move the fish to the new position along the spline
+        // Move the fish to the global spline position
         transform.position = currentPosition;
 
         // Rotate the fish to face the direction of movement (using tangent)
         Quaternion targetRotation = Quaternion.LookRotation(tangent);
-        transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, rotationSpeed * Time.deltaTime);
 
-        _previousPosition = currentPosition;
+        // Apply additional rotation offset to adjust the fish's orientation
+        targetRotation *= Quaternion.Euler(rotationOffset);
+
+        // Smoothly rotate the fish to the target rotation
+        transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, rotationSpeed * Time.deltaTime);
     }
 
     private void OnDrawGizmos()