Fix and add popup.

Assets/Cryville/Common/Unity/Popup.cs

@@ -10,6 +10,11 @@ namespace Cryville.Common.Unity {
 
 		float timer = 0;
 
+		const float DURATION = 5.0f;
+		const float DURIN = 0.4f;
+		const float DUROUT = 0.4f;
+		const float HEIGHT = 50f;
+
 #pragma warning disable IDE0051
 		void Start() {
 			layout = GetComponent<LayoutElement>();
@@ -19,9 +24,9 @@ namespace Cryville.Common.Unity {
 		}
 
 		void Update() {
-			if (timer <= 0.8f) layout.minHeight = timer * 50;
-			else if (timer >= 5f) GameObject.Destroy(gameObject);
-			else if (timer >= 4.2f) layout.minHeight = (300 - timer) * 50;
+			if (timer <= DURIN) layout.minHeight = timer / DURIN * HEIGHT;
+			else if (timer >= DURATION) GameObject.Destroy(gameObject);
+			else if (timer >= DURATION - DUROUT) layout.minHeight = (DURATION - timer) / DUROUT * HEIGHT;
 			timer += Time.deltaTime;
 		}
 #pragma warning restore IDE0051