using UnityEngine;       
using System.Collections;       
using System.Collections.Generic;       

public class Inventory : MonoBehaviour {       
          public List<id> it = new List<id>();       
          public bool _on=false;       
          public GUISkin skin;       
          public int i;       
          public int x;       
          public int y;       
          public MouseLook camera;       
          public MouseLook player;       
          void Start () {       
          }       
          void Update () {       
           Screen.showCursor = true;       
                   
           if(_on)       
           {       
           camera.enabled=false;player.enabled=false;}       
           else{camera.enabled=true;player.enabled=true;}           
          if(Input.GetKeyDown(KeyCode.I))       
           {       
            _on = !_on;       
           }       
          }       
          void OnGUI()       
          {       
           GUI.skin = skin;       
           if (_on)       
           {GUI.Window(0,new Rect(100,100,Screen.width -200,Screen.height-100),Obj,"Inventory");}       
          }       
              void Obj(int idd)              
              {              
             for(i = 0;i<2;i++)              
             {              
             if(it[i].count!=0)              
             {              
                     Rect vector =new Rect(x,y, it[i].xPiche,it[i].yPiche);              
                     GUI.DrawTexture(vector,it[i].piche);                           
                             }              
                     }              
             }
          }  

using UnityEngine;
using System.Collections;

public class id : MonoBehaviour {
   public string name;
   public int count;
   public string text;
   public int xPiche,yPiche;
   public Texture2D piche;
   void Start () {
    name = this.gameObject.name;
   }
   void Update () {
     
   }
}

x[]+=it[].xPiche;как выполнить это действие 1 раз после рисования каждой текстуры?  

for(i = 0;i<5;i++)
      {     
GUILayout.BeginArea(new Rect(x[i],y,it[i].x,it[i].y));    
     //vector =new Rect(x,y,it[i].x,it[i].y);
     GUILayout.Box(it[i].picthe,GUILayout.Width(100f),GUILayout.Height(100f));
      }
     x[i+1]+=it[i].x
     GUILayout.EndArea();

void Obj()     
              {     
                      for(i = 0;i<5;i++)     
                      {     
                    if(it[i].on==true)     
                    {     
                      Rect vector =new Rect(x,y,it[i].x,it[i].y);     
                      GUI.DrawTexture(vector,it[i].piche);     
                      x+=it[i].x;     
                    }     
                      }     
               }

public Texture2D picthe;

public List<id> it = new List<id>();

void Obj()     
              {     
                      for(i = 0;i<5;i++)     
                      {     
                    if(it[i].on==true)     
                    {     
                      Rect vector =new Rect(x,y,it[i].x,it[i].y);     
                      GUI.DrawTexture(vector,it[i].piche);     
                      x+=it[i].picthe;     
                    }     
                      }     
               }

     
using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class Inventory : MonoBehaviour {
    public List<id> it = new List<id>();
    public bool _on=false;
    public GUISkin skin;
    public int i;
    public int x;
    public int y;
    public MouseLook camera;
    Rect vector;
    public MouseLook player;
    void Start () {
    }
    void Update () {
     Screen.showCursor = true;
       
     if(_on)
     {
     camera.enabled=false;player.enabled=false;}
     else{camera.enabled=true;player.enabled=true;}     
    if(Input.GetKeyDown(KeyCode.I))
     {
      _on = !_on;
     }
    }
    void OnGUI()
    {
     GUI.skin = skin;
     if (_on)
     {GUI.Window(0,new Rect(100,100,Screen.width -200,Screen.height-100),Obj,"Inventory");}
    }
    void Obj(int idd)
    {
        
    }
}

using UnityEngine;
using System.Collections;

public class id : MonoBehaviour {
    public string name;
    public int count;
    public string text;
    public int xPiche,yPiche;
    public Texture2D picthe;
    void Start () {
    }
    void Update () {
       
    }
}

void Obj()
          {
                  for(i = 0;i<5;i++)
                  {
                          if(it[i].on==true)
                          {
                  Rect vector =new Rect(x,y,it[i].x,it[i].y);
                  GUI.DrawTexture(vector,it[i].piche);
                  x+=it[i].picthe;
                          }
                  }
           }