Final version, with scoring

Assets/Prefabs/Enemy1.prefab.meta

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-guid: b7d040d340613724d8fe77aa97d80cfe
-timeCreated: 1506415337
-licenseType: Free
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Assets/Prefabs/Enemy2.prefab.meta

-fileFormatVersion: 2
-guid: a0c7da998a25fa04f8465e15b1559371
-timeCreated: 1506433459
-licenseType: Free
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Assets/Scripts/Game/BaseEnemyManager.cs

@@ -25,6 +25,9 @@ public class BaseEnemyManager : MonoBehaviour
     [SerializeField]
     Renderer renderer;
 
+    public EnemyFactory enemyFactory;
+    public EnemyFactory.EnemyType enemyType = EnemyFactory.EnemyType.normalEnemy;
+
     // Use this for initialization
     protected void Start ()
     {
@@ -45,7 +48,8 @@ public class BaseEnemyManager : MonoBehaviour
         shooterManager.Shoot(shootDirection);
         if (transform.position.x < - UtilityMeasures.ScreenWidthInUnits() / 2f - 1f)
         {
-            Destroy(this.gameObject);
+            //Destroy(this.gameObject);
+            enemyFactory.Release(this.gameObject);
         }
     }
 }

Assets/Scripts/Game/BulletManager.cs

@@ -28,7 +28,7 @@ public class BulletManager : MonoBehaviour
     {
         GameObject other = collision.gameObject;
         if ((bulletType.Equals(BulletFactory.BulletType.playerBullet) && other.CompareTag("Enemy")) ||
-            (bulletType.Equals(BulletFactory.BulletType.enemyBullet) && other.CompareTag("Player")))
+            (bulletType.Equals(BulletFactory.BulletType.enemyBullet) && other.CompareTag("Player") && !ImmunityManager.Instance.isImmune))
         {
             bulletFactory.Release(this.gameObject);
             HealthManager otherHealthManager = other.GetComponent<HealthManager>();
@@ -36,6 +36,10 @@ public class BulletManager : MonoBehaviour
             {
                 otherHealthManager.TakeDamage(damage);
             }
+            if(other.CompareTag("Player"))
+            {
+                ImmunityManager.Instance.BecomeImmune();
+            }
         }
     }
 }

Assets/Scripts/Game/DashManager.cs

@@ -30,6 +30,7 @@ public class DashManager : MonoBehaviour
             dashStart = Time.time;
             dashDirection = direction;
             isDashing = true;
+            ImmunityManager.Instance.BecomeImmune();
         }
     }
 	

Assets/Scripts/Game/EnemyGenerator.cs

@@ -4,8 +4,11 @@ using UnityEngine;
 
 public class EnemyGenerator : MonoBehaviour {
 
+    /*
     [SerializeField]
-    GameObject[] enemyPrefabs;
+    GameObject[] enemyPrefabs;*/
+    [SerializeField]
+    EnemyFactory.EnemyType[] enemyTypes;
     float minY = -8;
     float maxY = 8;
     float X = 10;
@@ -14,6 +17,8 @@ public class EnemyGenerator : MonoBehaviour {
     float lastEnemyTime = float.NegativeInfinity;
     [SerializeField]
     BulletFactory bulletFactory;
+    [SerializeField]
+    EnemyFactory enemyFactory;
 
 	// Use this for initialization
 	void Start ()
@@ -34,11 +39,11 @@ public class EnemyGenerator : MonoBehaviour {
 	void Update ()
     {
         UpdateSizes();
-        if (enemyPrefabs.Length > 0 && Time.time - lastEnemyTime > timeBetweenEnemies)
+        if (enemyTypes.Length > 0 && Time.time - lastEnemyTime > timeBetweenEnemies)
         {
-            int selectedEnemy = Random.Range((int)0, (int)enemyPrefabs.Length);
+            int selectedEnemy = Random.Range((int)0, (int)enemyTypes.Length);
             float Y = Random.Range(minY, maxY);
-            GameObject newEnemy = Instantiate(enemyPrefabs[selectedEnemy]);
+            GameObject newEnemy = enemyFactory.GetEnemy(enemyTypes[selectedEnemy]);
             ShooterManager enemyShooterManager = newEnemy.GetComponent<ShooterManager>();
             if(enemyShooterManager)
             {

Assets/Scripts/Game/HealthManager.cs

@@ -24,7 +24,6 @@ public class HealthManager : MonoBehaviour
             {
                 deathManager.Die();
             }
-            Destroy(this.gameObject);
         }
     }
 

Assets/Scripts/Game/PlayerController.cs

@@ -16,8 +16,7 @@ public class PlayerController : MonoBehaviour {
     float movementWidth = 6;
     float movementLength = 1;
 
-    [SerializeField]
-    Vector3 basePosition = new Vector3(-9, 0, 0);
+    Vector3 basePosition;
 
     [SerializeField]
     float dashKeyDelay = 0.5f;
@@ -27,12 +26,14 @@ public class PlayerController : MonoBehaviour {
 
     private void Start()
     {
+        basePosition = new Vector3(-9f * UtilityMeasures.ScreenWidthInUnits() / 20f, 0, 0);
         transform.position = basePosition;
         UpdateSizes();
     }
 
     void UpdateSizes()
     {
+        basePosition = new Vector3(-9f * UtilityMeasures.ScreenWidthInUnits() / 20f, 0, 0);
         movementWidth = UtilityMeasures.ScreenHeightInUnits() / 2f;
         movementLength = (UtilityMeasures.ScreenWidthInUnits() / 2f) + basePosition.x;
     }

Assets/Scripts/Game/PlayerDeathManager.cs

@@ -7,6 +7,8 @@ public class PlayerDeathManager : DeathManager
     public override void Die()
     {
         base.Die();
+        ScoreMemory.Instance.savedScore = ScoreManager.Instance.GetScore();
         UnityEngine.SceneManagement.SceneManager.LoadScene("GameOver");
+        Destroy(this.gameObject);
     }
 }

Shoot'em up.csproj

@@ -82,6 +82,8 @@
     <Compile Include="Assets\Scripts\Game\BulletManager.cs" />
     <Compile Include="Assets\Scripts\Game\DashManager.cs" />
     <Compile Include="Assets\Scripts\Game\DeathManager.cs" />
+    <Compile Include="Assets\Scripts\Game\EnemyDeathManager.cs" />
+    <Compile Include="Assets\Scripts\Game\EnemyFactory.cs" />
     <Compile Include="Assets\Scripts\Game\EnemyGenerator.cs" />
     <Compile Include="Assets\Scripts\Game\EnergyManager.cs" />
     <Compile Include="Assets\Scripts\Game\EnergySliderManager.cs" />
@@ -89,10 +91,14 @@
     <Compile Include="Assets\Scripts\Game\HealthAndEnergyPrinter.cs" />
     <Compile Include="Assets\Scripts\Game\HealthManager.cs" />
     <Compile Include="Assets\Scripts\Game\HealthSliderManager.cs" />
+    <Compile Include="Assets\Scripts\Game\ImmunityManager.cs" />
     <Compile Include="Assets\Scripts\Game\MoveableManager.cs" />
     <Compile Include="Assets\Scripts\Game\PlayerController.cs" />
     <Compile Include="Assets\Scripts\Game\PlayerDeathManager.cs" />
     <Compile Include="Assets\Scripts\Game\PlayerShooterManager.cs" />
+    <Compile Include="Assets\Scripts\Game\ScoreManager.cs" />
+    <Compile Include="Assets\Scripts\Game\ScoreMemory.cs" />
+    <Compile Include="Assets\Scripts\Game\ScorePrinter.cs" />
     <Compile Include="Assets\Scripts\Game\ShooterManager.cs" />
     <Compile Include="Assets\Scripts\Game\UIGunType.cs" />
     <Compile Include="Assets\Scripts\Game\UtilityMeasures.cs" />
@@ -100,6 +106,7 @@
     <Compile Include="Assets\Scripts\Game\ZigzagEnemyManager.cs" />
     <Compile Include="Assets\Scripts\Menus\ContinueButton.cs" />
     <Compile Include="Assets\Scripts\Menus\ExitButton.cs" />
+    <Compile Include="Assets\Scripts\Menus\GameOverScorePrinter.cs" />
     <Compile Include="Assets\Scripts\Menus\PlayButton.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />