Parallaxing, enemy

Assembly-CSharp.csproj

@@ -56,7 +56,9 @@
   </ItemGroup>
   <ItemGroup>
      <Compile Include="Assets\Scripts\CameraController.cs" />
+     <Compile Include="Assets\Scripts\EnemyController.cs" />
      <Compile Include="Assets\Scripts\OwnCharacterController.cs" />
+     <Compile Include="Assets\Scripts\Parallaxing.cs" />
      <Compile Include="Assets\Scripts\RocketScript.cs" />
      <Compile Include="Assets\Scripts\Tiling.cs" />
      <Compile Include="Assets\Scripts\WeaponFireController.cs" />

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Assets/Scenes/SampleScene.unity

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Assets/Scripts/EnemyController.cs

@@ -0,0 +1,24 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class EnemyController : MonoBehaviour
+{
+    public Transform target;
+    public float speed;
+    private Rigidbody2D _rb;
+    
+    // Start is called before the first frame update
+    void Start()
+    {
+        _rb = GetComponent<Rigidbody2D>();
+    }
+
+    // Update is called once per frame
+    void FixedUpdate()
+    {
+        var diff = target.position - transform.position;
+        diff.Normalize();
+        _rb.AddForce(diff * speed);
+    }
+}

Assets/Scripts/EnemyController.cs.meta

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Assets/Scripts/Parallaxing.cs

@@ -0,0 +1,51 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class Parallaxing : MonoBehaviour
+{
+   	private Transform _background;
+    private float _parallaxScale;
+	public float smoothing = 1f;
+
+	private Transform _cam;				// reference to the main cameras transform
+	private Vector3 _previousCamPos;	// the position of the camera in the previous frame
+
+	// Is called before Start(). Great for references.
+	void Awake () {
+		// set up the camera reference
+		_cam = Camera.main.transform;
+		_background = transform;
+	}
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        // The previous frame had the current frame's camera position
+		_previousCamPos = _cam.position;
+
+        // asigning coresponding parallaxScale
+        _parallaxScale = _background.position.z * -1;
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+	    // the parallax is the opposite of the camera movement because the previous frame multiplied by the scale
+	    float parallax = (_previousCamPos.x - _cam.position.x) * _parallaxScale;
+
+	    // set a target x position which is the current position plus the parallax
+	    var position = _background.position;
+	    float backgroundTargetPosX = position.x + parallax;
+
+	    // create a target position which is the background's current position with it's target x position
+	    Vector3 backgroundTargetPos = new Vector3(backgroundTargetPosX, position.y, position.z);
+
+	    // fade between current position and the target position using lerp
+	    position = Vector3.Lerp(position, backgroundTargetPos, smoothing * Time.deltaTime);
+	    _background.position = position;
+
+	    // set the previousCamPos to the camera's position at the end of the frame
+	    _previousCamPos = _cam.position;
+    }
+}

Assets/Scripts/Parallaxing.cs.meta

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Assets/Scripts/RocketScript.cs

@@ -33,4 +33,13 @@ public class RocketScript : MonoBehaviour
 
         _rb.AddForce(new Vector2(_goingRight ? 10 : -10, 0));
     }
+
+    private void OnCollisionEnter2D(Collision2D other)
+    {
+        if (!other.gameObject.CompareTag("Enemy"))
+            return;
+        gameObject.SetActive(false);
+        _rb.velocity = Vector2.zero;
+        Destroy(other.gameObject);
+    }
 }

ProjectSettings/TagManager.asset

@@ -5,6 +5,7 @@ TagManager:
   serializedVersion: 2
   tags:
   - Ground
+  - Enemy
   layers:
   - Default
   - TransparentFX