hold button to dive

unity/Assets/Scripts/DragonMovement.cs

@@ -21,7 +21,8 @@ public class DragonMovement : MonoBehaviour
     [SerializeField] List<SpriteRenderer> _ammoGui2 = new List<SpriteRenderer>();
     [SerializeField] GameObject _ammoNormal;
     [SerializeField] GameObject _ammoGlide;
-    const float GLIDE_TIME = 0.6f;
+    const float DIVE_TIME = 0.4f;
+    float _buttonHoldTime = 0f;
     ArrayList _ghosts = new ArrayList();
 
     float _stunTime = 0f;
@@ -32,6 +33,7 @@ public class DragonMovement : MonoBehaviour
     int _ammo = 0;
     float _speedBoostTime = 0f;
     float _timeToUpdateGhosts = 0f;
+    bool _isInDive = false;
 
     public enum AttackType
     {
@@ -149,6 +151,7 @@ public class DragonMovement : MonoBehaviour
 
     void Stun(float length)
     {
+        _isInDive = false;
         _stunTime = length;
         _animator.Play("fall");
         ShowNormalAmmo();
@@ -212,6 +215,12 @@ public class DragonMovement : MonoBehaviour
         _ammoGlide.SetActive(false);
     }
 
+    void NormalFlight()
+    {
+        _animator.Play("glide");
+        ShowNormalAmmo();
+    }
+
     void Shoot()
     {
         if (Ammo <= 0)
@@ -256,22 +265,41 @@ public class DragonMovement : MonoBehaviour
         _flapTime -= Time.deltaTime;
         _stunTime -= Time.deltaTime;
 
+        if (Input.GetKey(FlapKey))
+        {
+            _buttonHoldTime += Time.deltaTime;
+        }
+        else
+        {
+            _buttonHoldTime = 0f;
+        }
+
         const float SPEED = .4f;
         float horizontalSpeed = SPEED;
 
 
         float verticalSpeed = 0f;
 
-        if (_flapTime < - GLIDE_TIME)
+        if (_buttonHoldTime >= DIVE_TIME)
+        {
+            if (_isInDive == false)
             {
+                _isInDive = true;
                 _ammoNormal.SetActive(false);
                 _ammoGlide.SetActive(true);
                 _animator.Play("speedup");
-            horizontalSpeed += (_flapTime + GLIDE_TIME) * -2f;
+                _rigidbody.velocity = new Vector2(_rigidbody.velocity.x, 0f);
+                _rigidbody.AddForce(new Vector2(FlapForce * .1f, FlapForce * -5.5f));
+            }
+            horizontalSpeed += (_buttonHoldTime) * 3f;
         }
         else
         {
-            //
+            if (_isInDive)
+            {
+                NormalFlight();
+                _isInDive = false;
+            }
         }
 
   
@@ -312,7 +340,7 @@ public class DragonMovement : MonoBehaviour
 
     void UpdateGhosts()
     {
-        if (_flapTime >= - GLIDE_TIME)
+        if (_isInDive == false)
         {
             foreach (GameObject ghost in _ghosts)
             {