Laser and Turret all directions

Assets/Scenes/SampleScene.unity

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@@ -250,7 +218,7 @@ GameObject:
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   - component: {fileID: 934827308}
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-  m_Name: Turret
+  m_Name: Laser Turret
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@@ -333,6 +301,7 @@ MonoBehaviour:
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+  distance: 3
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@@ -374,8 +343,8 @@ LineRenderer:
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+  - {x: 0, y: 0, z: 0}
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+  - {x: 0, y: 0, z: 0}
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Assets/Scripts/Laser.cs

@@ -4,21 +4,36 @@ using UnityEngine;
 
 public class Laser : MonoBehaviour
 {
-    float maxDistance = 500.0f;
+    public bool flipDirection;
 
+    float maxDistance = 1000.0f;
+    bool isHorizontal;
     LineRenderer laserLine;
 
     void Start()
     {
         laserLine = GetComponent<LineRenderer>();
+        isHorizontal = GetComponent<Turret>().isHorizontal;
     }
 
     void Update()
     {
-        RaycastHit2D hit = Physics2D.Raycast(transform.position, Vector2.right);
+        laserLine.SetPosition(0, transform.position);
-        float endpointX = maxDistance;
+
+        if (isHorizontal)
+        {
+            float endpointY = flipDirection ? transform.position.y - maxDistance : transform.position.y + maxDistance;
+            RaycastHit2D hit = Physics2D.Raycast(transform.position, flipDirection ? Vector2.down : Vector2.up);
+
+            if (hit.collider) endpointY = hit.collider.transform.position.y;
+            laserLine.SetPosition(1, new Vector3(transform.position.x, endpointY, 0));
+        } else
+        {
+            float endpointX = flipDirection ? transform.position.x - maxDistance : transform.position.x + maxDistance;
+            RaycastHit2D hit = Physics2D.Raycast(transform.position, flipDirection ? Vector2.left : Vector2.right);
+
             if (hit.collider) endpointX = hit.collider.transform.position.x;
-        laserLine.SetPosition (0, new Vector3(transform.position.x, transform.position.y, 0));
             laserLine.SetPosition(1, new Vector3(endpointX, transform.position.y, 0));
         }
     }
+}

Assets/Scripts/Turret.cs

@@ -4,12 +4,38 @@ using UnityEngine;
 
 public class Turret : MonoBehaviour
 {
-    public float speed = 10;
+    public float speed = 10.0f;
+    public float distance = 2.0f;
     public bool isHorizontal = false;
 
+    float startX;
+    float startY;
+
+    void Start()
+    {
+        startX = transform.position.x;
+        startY = transform.position.y;
+    }
+
     void Update()
     {
-        transform.position += getMovementVector() * speed * Time.deltaTime;
+        Vector3 movementVector = getMovementVector();
+
+        if (allowMovement(movementVector)) moveTurret(movementVector);
+    }
+
+    bool allowMovement(Vector3 movementVector)
+    {
+        bool moveUp = movementVector.y > 0;
+        bool moveDown = movementVector.y < 0;
+        bool moveRight = movementVector.x > 0;
+        bool moveLeft = movementVector.x < 0;
+
+        if (moveUp && transform.position.y >= startY + distance) return false;
+        if (moveDown && transform.position.y <= startY - distance) return false;
+        if (moveRight && transform.position.x >= startX + distance) return false;
+        if (moveLeft && transform.position.x <= startX - distance) return false;
+        return true;
     }
 
     Vector3 getMovementVector()
@@ -19,4 +45,17 @@ public class Turret : MonoBehaviour
 
         return new Vector3(x, y, 0);
     }
+
+    void moveTurret(Vector3 movementVector)
+    {
+        transform.position += movementVector * speed * Time.deltaTime;
+    }
+
+    void OnDrawGizmosSelected()
+    {
+        Vector3 offset = isHorizontal ? new Vector3(distance, 0, 0) : new Vector3(0, distance, 0);
+
+        Gizmos.color = Color.red;
+        Gizmos.DrawLine(transform.position - offset, transform.position + offset);
+    }
 }