fix：1、添加arrow的游戏代码，和相关的周边功能

Assets/Scenes/MainScene.unity

@@ -744,8 +744,9 @@ GameObject:
   serializedVersion: 6
   m_Component:
   - component: {fileID: 292594112}
+  - component: {fileID: 292594113}
   m_Layer: 0
-  m_Name: GameObject
+  m_Name: LevelManager
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -766,6 +767,18 @@ Transform:
   m_Children: []
   m_Father: {fileID: 0}
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!114 &292594113
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 292594110}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 3649ac68929b4b359b8019a52bcc8feb, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
 --- !u!1 &338080400
 GameObject:
   m_ObjectHideFlags: 0
@@ -2242,6 +2255,50 @@ SpriteRenderer:
   m_WasSpriteAssigned: 1
   m_MaskInteraction: 0
   m_SpriteSortPoint: 0
+--- !u!1 &1969760103
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 1969760105}
+  - component: {fileID: 1969760104}
+  m_Layer: 0
+  m_Name: InputHelper
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!114 &1969760104
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1969760103}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 0bd9077b8ef54fc38cf318e5d8a518d7, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+--- !u!4 &1969760105
+Transform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1969760103}
+  serializedVersion: 2
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: -14.006069, y: -23.372356, z: -0.64489496}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
+  m_Children: []
+  m_Father: {fileID: 0}
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
 --- !u!1 &2076036131
 GameObject:
   m_ObjectHideFlags: 0
@@ -2433,3 +2490,4 @@ SceneRoots:
   - {fileID: 29401442}
   - {fileID: 292594112}
   - {fileID: 1659410219}
+  - {fileID: 1969760105}