change to state machine

Assets/Scripts/PlayerState/PlayerState.cs

@@ -0,0 +1,13 @@
+using UnityEngine;
+
+public abstract class PlayerState
+{
+    protected readonly CharacterCtrl _characterCtrl;
+    public PlayerState(CharacterCtrl characterCtrl)
+    {
+        _characterCtrl = characterCtrl;
+    }
+    public abstract void Enter();
+    public abstract void Exit();
+    public abstract void Update();
+}