feat: Add variable system, scene transition, and improve character layout

- **Introduce Variable System**
  - Added singleton class for variable management
  - Implemented script commands `[var]` and `[add]` for variable control
  - Supported variable substitution (`{variable}`) in dialogue and choices

- **Expand Script Features**
  - Added `[scene]` command for scene transition (load scene and link next script)

- **Improve Character Presentation**
  - Refactored character object hierarchy for better animation control
  - Applied mask-based soft transition effect (Soft Wipe) for expression changes

Assets/_MAIN/Scripts/Core/ScriptAction.cs

@@ -3,7 +3,7 @@ using System.Collections.Generic;
 public class ScriptAction
 {
     public string Type { get; set; }
-    public Dictionary<string, object> Params { get; set; } = new Dictionary<string, object>();
+    public Dictionary<string, object> Params { get; set; } = new();
     public List<Dictionary<string, string>> Choices { get; set; }
 
     public string GetParam(string key, string defaultValue = "")

Assets/_MAIN/Scripts/Core/ScriptManager.cs

@@ -3,6 +3,7 @@ using PrimeTween;
 using TMPro;
 using UnityEngine;
 using UnityEngine.EventSystems;
+using UnityEngine.SceneManagement;
 using UnityEngine.UI;
 
 public class ScriptManager : MonoBehaviour
@@ -30,6 +31,8 @@ public class ScriptManager : MonoBehaviour
     private Tween dialogueTween;
     private Script _currentScript;
 
+    public static string NextScriptPath = "";
+
     void Start()
     {
         speakerText.SetText(" ");
@@ -37,7 +40,25 @@ public class ScriptManager : MonoBehaviour
         dialogueText.SetText(" ");
         dialogueText.ForceMeshUpdate(true);
 
-        _currentScript = ScriptParser.Parse(scriptFile.text);
+        if (!string.IsNullOrEmpty(NextScriptPath))
+        {
+            TextAsset loadedScript = Resources.Load<TextAsset>($"NovelScripts/{NextScriptPath}");
+            if (loadedScript != null)
+            {
+                _currentScript = ScriptParser.Parse(loadedScript.text);
+                NextScriptPath = "";
+            }
+            else
+            {
+                Debug.LogError($"ScriptManager :: Cannot find script: {NextScriptPath}");
+                _currentScript = ScriptParser.Parse(scriptFile.text);
+            }
+        }
+        else
+        {
+            _currentScript = ScriptParser.Parse(scriptFile.text);
+        }
+
         NextStep();
     }
 
@@ -144,6 +165,7 @@ public class ScriptManager : MonoBehaviour
             if (speaker == "")
                 speakerSprite.SetActive(false);
 
+            speaker = VariableManager.Instance.ReplaceVariables(speaker);
             speakerText.SetText(speaker);
             speakerText.ForceMeshUpdate(true);
             NextStep();
@@ -152,6 +174,7 @@ public class ScriptManager : MonoBehaviour
         if (action.Type == "msg")
         {
             string dialogue = action.GetParam("content");
+            dialogue = VariableManager.Instance.ReplaceVariables(dialogue);
             DisplayDialogue(dialogue);
             return;
         }
@@ -174,7 +197,7 @@ public class ScriptManager : MonoBehaviour
 
             foreach (var choice in action.Choices)
             {
-                string text = choice["content"];
+                string text = VariableManager.Instance.ReplaceVariables(choice["content"]);
                 string target = choice["goto"];
                 GameObject buttonObj = Instantiate(choiceButtonPrefab, choiceButtonContainer);
                 buttonObj.GetComponentInChildren<TextMeshProUGUI>().text = text;
@@ -196,6 +219,34 @@ public class ScriptManager : MonoBehaviour
             }
             return;
         }
+        if (action.Type == "var")
+        {
+            foreach (var entry in action.Params)
+            {
+                VariableManager.Instance.SetVariable(entry.Key, entry.Value.ToString());
+            }
+            NextStep();
+            return;
+        }
+        if (action.Type == "add")
+        {
+            foreach (var entry in action.Params)
+            {
+                VariableManager.Instance.AddVariable(entry.Key, entry.Value.ToString());
+            }
+            NextStep();
+            return;
+        }
+        if (action.Type == "scene")
+        {
+            string sceneName = action.GetParam("file");
+            string nextScript = action.GetParam("script");
+            Debug.Log($"ScriptManager :: Load Scene: {sceneName}, Next Script: {nextScript}");
+
+            NextScriptPath = nextScript;
+            SceneManager.LoadScene(sceneName);
+            return;
+        }
     }
 
     public void DebugReload()
@@ -210,11 +261,11 @@ public class ScriptManager : MonoBehaviour
 
     private bool IsPointerOverInteractiveUI()
     {
-    PointerEventData eventData = new(EventSystem.current)
-    {
-      position = Input.mousePosition
-    };
-    List<RaycastResult> results = new();
+        PointerEventData eventData = new(EventSystem.current)
+        {
+            position = Input.mousePosition
+        };
+        List<RaycastResult> results = new();
         EventSystem.current.RaycastAll(eventData, results);
 
         foreach (RaycastResult result in results)

Assets/_MAIN/Scripts/Core/ScriptParser.cs

@@ -1,6 +1,5 @@
 using System.Collections.Generic;
 using System.Text.RegularExpressions;
-using UnityEngine;
 
 public class ScriptParser
 {
@@ -32,7 +31,6 @@ public class ScriptParser
             {
                 string tagName = tagMatch.Groups[1].Value;
                 string attrString = tagMatch.Groups[2].Value;
-                Debug.Log($"ScriptParser :: Tag: {tagName} {attrString}");
 
                 var scriptAction = new ScriptAction { Type = tagName };
 

Assets/_MAIN/Scripts/Core/VariableManager.cs

@@ -0,0 +1,73 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+public class VariableManager
+{
+    private static VariableManager _instance;
+    public static VariableManager Instance => _instance ??= new VariableManager();
+
+    private Dictionary<string, object> _variables = new();
+
+    public void SetVariable(string name, string value)
+    {
+        // Try to parse as int or float, otherwise string
+        if (int.TryParse(value, out int intVal))
+            _variables[name] = intVal;
+        else if (float.TryParse(value, out float floatVal))
+            _variables[name] = floatVal;
+        else
+            _variables[name] = value;
+
+
+        Debug.Log($"VariableManager :: Set {name} = {_variables[name]} ({_variables[name].GetType()})");
+    }
+
+    public object GetVariable(string name)
+    {
+        return _variables.ContainsKey(name) ? _variables[name] : null;
+    }
+
+    public void AddVariable(string name, string valueStr)
+    {
+        if (!_variables.ContainsKey(name))
+        {
+            SetVariable(name, valueStr);
+            return;
+        }
+
+        object current = _variables[name];
+
+
+        if (current is int currentInt && int.TryParse(valueStr, out int addInt))
+        {
+            _variables[name] = currentInt + addInt;
+        }
+        else if (current is float currentFloat && float.TryParse(valueStr, out float addFloat))
+        {
+            _variables[name] = currentFloat + addFloat;
+        }
+        else if (current is string currentStr)
+        {
+            _variables[name] = currentStr + valueStr;
+        }
+        else
+        {
+            Debug.LogWarning($"VariableManager :: Cannot add {valueStr} to {name} (Type: {current.GetType()})");
+        }
+
+
+        Debug.Log($"VariableManager :: Add {name} += {valueStr} -> {_variables[name]}");
+    }
+
+
+    public string ReplaceVariables(string text)
+    {
+        if (string.IsNullOrEmpty(text)) return text;
+
+        foreach (var kvp in _variables)
+        {
+            text = text.Replace($"{{{kvp.Key}}}", kvp.Value.ToString());
+        }
+        return text;
+    }
+}

Assets/_MAIN/Scripts/Core/VariableManager.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 309802f724fb94846a7b453b40357e1d

Assets/_MAIN/Scripts/Core/VisualNovelLayoutDirector.cs

@@ -1,5 +1,4 @@
 using System.Collections;
-using System.Collections.Generic;
 using PrimeTween;
 using UnityEngine;
 using UnityEngine.UI;
@@ -19,8 +18,6 @@ public class VisualNovelLayoutDirector : MonoBehaviour
     public float defaultDuration = 0.5f;
     public float moveDistance = 800f;
 
-
-
     // ========================= [1. 등장 (Entry)] =========================
     public void AddCharacter(string fileName, EntranceType type)
     {