Working on motion notes

Assets/MotionNotes/Clap.cs

 using System;
-using System.Collections.Generic;
+using System.Collections;
 using UnityEngine;
 
 public class Clap : MotionNote
@@ -20,13 +20,13 @@ public class Clap : MotionNote
     {
     }
 
-    public override IEnumerable<bool> Checkpoint()
+    public override IEnumerator Checkpoint()
     {
         var motionState = InputManager.Instance.CurrentMotionState;
         var motion = motionState;
 
         while (motion != MotionState.CLAP_PREPARE)
-            yield return false;
+            yield return null;
 
         Activated = true;
 

Assets/MotionNotes/Guard.cs

 using System;
-using System.Collections.Generic;
+using System.Collections;
 using UnityEngine;
 
 public class Guard : MotionNote
@@ -16,7 +16,7 @@ public class Guard : MotionNote
         }
     }
 
-    public Guard(string key, float timing) : this(timing)
+    public Guard(string key, float timing, float end = 0f) : this(timing, end)
     {
         switch (key)
         {
@@ -31,11 +31,11 @@ public class Guard : MotionNote
                 break;
         }
     }
-    public Guard(float timing) : base(timing)
+    public Guard(float timing, float end = 0f) : base(timing, end)
     {
     }
 
-    public override IEnumerable<bool> Checkpoint()
+    public override IEnumerator Checkpoint()
     {
         var motionState = InputManager.Instance.CurrentMotionState;
         var motion = motionState;

Assets/MotionNotes/Jump.cs

 using System;
-using System.Collections.Generic;
+using System.Collections;
 using UnityEngine;
 
 public class Jump : MotionNote
@@ -20,7 +20,7 @@ public class Jump : MotionNote
     {
     }
 
-    public override IEnumerable<bool> Checkpoint()
+    public override IEnumerator Checkpoint()
     {
         var motionState = InputManager.Instance.CurrentMotionState;
         var motion = motionState;

Assets/MotionNotes/Piano.cs

 using System;
-using System.Collections.Generic;
+using System.Collections;
 using UnityEngine;
 
 public class Piano : MotionNote
@@ -35,7 +35,7 @@ public class Piano : MotionNote
     {
     }
 
-    public override IEnumerable<bool> Checkpoint()
+    public override IEnumerator Checkpoint()
     {
         var motionState = InputManager.Instance.CurrentMotionState;
         var motion = motionState;

Assets/MotionNotes/PushUp.cs

 using System;
-using System.Collections.Generic;
+using System.Collections;
 using UnityEngine;
 
 public class PushUp : MotionNote
@@ -35,7 +35,7 @@ public class PushUp : MotionNote
     {
     }
 
-    public override IEnumerable<bool> Checkpoint()
+    public override IEnumerator Checkpoint()
     {
         var motionState = InputManager.Instance.CurrentMotionState;
         var motion = motionState;

Assets/Script/MotionNote.cs

 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using UnityEngine;
@@ -12,28 +13,61 @@ public abstract class MotionNote : Note
     public MotionNote(string key, float start, float end = 0f)
         : this(start, end) { }
 
-    public abstract IEnumerable<bool> Checkpoint();
+    public abstract IEnumerator Checkpoint();
 
     public static readonly Dictionary<string, Type> keymap
         = new Dictionary<string, Type>
         {
             { "CP", typeof(Clap) },
+
             { "JP", typeof(Jump) },
+
             { "BP", typeof(PushUp) },
             { "LP", typeof(PushUp) },
             { "RP", typeof(PushUp) },
+
+            { "BK", typeof(PushUp) },
+            { "LK", typeof(PushUp) },
+            { "RK", typeof(PushUp) },
+
             { "BI", typeof(Piano) },
             { "LI", typeof(Piano) },
             { "RI", typeof(Piano) },
+
             { "BG", typeof(Guard) },
             { "LG", typeof(Guard) },
             { "RG", typeof(Guard) },
+            
+            { "BL", typeof(Guard) },
+            { "LL", typeof(Guard) },
+            { "RL", typeof(Guard) },
+
+            // Long motion
+            { "BU", typeof(Guard) },
+            { "LU", typeof(Guard) },
+            { "RU", typeof(Guard) },
+
+            { "BD", typeof(Guard) },
+            { "LD", typeof(Guard) },
+            { "RD", typeof(Guard) },
+
+            { "JS", typeof(Guard) },
+
+            { "BH", typeof(Guard) },
+            { "LH", typeof(Guard) },
+            { "RH", typeof(Guard) },
+
+            { "OT", typeof(Guard) },
         };
 
     protected static Sprite LoadNewSprite(string FilePath, float PixelsPerUnit = 100.0f)
     {
         Sprite NewSprite = new Sprite();
         Texture2D SpriteTexture = LoadTexture(FilePath);
+
+        if (SpriteTexture == null)
+            return null;
+
         NewSprite = Sprite.Create(SpriteTexture,
                     new Rect(0, 0, SpriteTexture.width, SpriteTexture.height),
                     new Vector2(0, 0), PixelsPerUnit);