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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,61 +1,79 @@ | ||
| using System.Collections; | ||
| using System.Collections.Generic; | ||
| using UnityEngine; | ||
| using UnityEngine.Splines; | ||
|
|
||
| public class Fish : MonoBehaviour | ||
| { | ||
| public float swimSpeed = 2f; | ||
| public float changeDirectionInterval = 2f; | ||
| public float swimHeight = 0.5f; | ||
| public float swimFrequency = 1f; | ||
| public float randomWanderAmount = 0.5f; | ||
| public GameObject splineObject; // Reference to the GameObject that holds the SplineContainer | ||
| public float swimSpeed = 1f; // Speed along the spline | ||
| public float rotationSpeed = 2f; // Speed of rotation to face the spline direction | ||
| public bool loop = true; // Should the fish loop back to the start of the spline? | ||
|
|
||
| private Vector2 _direction; | ||
| private float _timer; | ||
| private float _initialY; | ||
| private float _progress; // Progress along the spline (0 to 1) | ||
| private SplineContainer _splineContainer; | ||
| private Spline _spline; | ||
| private Vector3 _previousPosition; | ||
|
|
||
| private void Start() | ||
| { | ||
| ChangeDirection(); | ||
| _timer = changeDirectionInterval; | ||
| _initialY = transform.position.y; | ||
| // Check if splineObject is assigned, then get the SplineContainer component | ||
| if (splineObject != null) | ||
| { | ||
| _splineContainer = splineObject.GetComponent<SplineContainer>(); | ||
| if (_splineContainer == null) | ||
| { | ||
| Debug.LogError("No SplineContainer found on the referenced GameObject."); | ||
| return; | ||
| } | ||
| } | ||
| else | ||
| { | ||
| Debug.LogError("No GameObject with a SplineContainer assigned to Fish."); | ||
| return; | ||
| } | ||
|
|
||
| // Get the spline from the container | ||
| _spline = _splineContainer.Spline; | ||
| _previousPosition = transform.position; | ||
| } | ||
|
|
||
| private void Update() | ||
| { | ||
| transform.Translate(_direction * (swimSpeed * Time.deltaTime)); | ||
| float newY = _initialY + Mathf.Sin(Time.time * swimFrequency) * swimHeight; | ||
| transform.position = new Vector3(transform.position.x, newY, transform.position.z); | ||
| if (_spline == null) return; | ||
|
|
||
| // Move fish along the spline | ||
| _progress += swimSpeed * Time.deltaTime / _spline.GetLength(); // Normalize speed across spline length | ||
|
|
||
| _timer -= Time.deltaTime; | ||
| if (_timer <= 0f) | ||
| if (_progress > 1f) | ||
| { | ||
| ChangeDirection(); | ||
| _timer = changeDirectionInterval; | ||
| _progress = loop ? 0f : 1f; // Loop or clamp progress | ||
| } | ||
|
|
||
| _direction += new Vector2(Random.Range(-randomWanderAmount, randomWanderAmount), Random.Range(-randomWanderAmount, randomWanderAmount)); | ||
| _direction.Normalize(); | ||
| // Get the position and tangent from the spline | ||
| Vector3 currentPosition = _spline.EvaluatePosition(_progress); | ||
| Vector3 tangent = _spline.EvaluateTangent(_progress); | ||
|
|
||
| Vector2 position = transform.position; | ||
| if (position.x < -5 || position.x > 5 || position.y < -5 || position.y > 5) | ||
| { | ||
| _direction = -_direction; | ||
| } | ||
| } | ||
| // Move the fish to the new position along the spline | ||
| transform.position = currentPosition; | ||
|
|
||
| private void ChangeDirection() | ||
| { | ||
| float angle = Random.Range(0f, 360f); | ||
| _direction = new Vector2(Mathf.Cos(angle), Mathf.Sin(angle)).normalized; | ||
| // 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; | ||
| } | ||
|
|
||
| private void OnTriggerEnter2D(Collider2D other) | ||
| private void OnDrawGizmos() | ||
| { | ||
| if (other.CompareTag("Player")) | ||
| // Draw the spline path in the editor (optional) | ||
| if (_splineContainer == null || _splineContainer.Spline == null) return; | ||
| Gizmos.color = Color.cyan; | ||
| Spline spline = _splineContainer.Spline; | ||
| for (float t = 0; t < 1; t += 0.01f) | ||
| { | ||
| Vector2 fleeDirection = (transform.position - other.transform.position).normalized; | ||
| _direction = fleeDirection; | ||
| Vector3 point = spline.EvaluatePosition(t); | ||
| Gizmos.DrawSphere(point, 0.05f); | ||
| } | ||
| } | ||
| } | ||
| } |
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