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Detecting collision between 2 windows

nf67
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nf67 Universalist

nf67

Posted
Posted (edited)

Hi there,

I was wondering how I can check if there's a collision between 2 windows.

Assuming that there isn't a command like "if X overlaps Y" I took the more mathematical approach.

I am not sure if this is a correct though, and I don't know how to translate it to AutoIt.

Here's a picture that hopefully explains what I mean:

Posted Image

Thanks :)

Edited by nf67
ken82m Universalist

ken82m

Posted
Posted (edited) 

#include <array.au3>


$Win1 = Run("Notepad.exe")
Sleep(3000)
$Win1 = _WinGetByPID($Win1);get win handle to app window
$Win2 = Run("mspaint.exe")
Sleep(3000)
$Win2 = _WinGetByPID($Win2);get win handle to app window


While 1
    Sleep(10)
    CheckCollission($Win1, $Win2)
WEnd


Func CheckCollission($Win1, $Win2)
#cs
Win 1
    $Win1Pos[0];X start
    $Win1Pos[1];Y start
    $Win2Pos[2];X end
    $Win2Pos[3];Y end

Win 2
    $Win2Pos[0];X start
    $Win2Pos[1];Y start
    $Win2Pos[2];X end
    $Win2Pos[3];Y end
#ce

    $Win1Pos = WinGetPos($Win1)
    $Win2Pos = WinGetPos($Win2)
    
    $Win1Pos[2] = $Win1Pos[0] + $Win1Pos[2]
    $Win1Pos[3] = $Win1Pos[1] + $Win1Pos[3]
    $Win2Pos[2] = $Win2Pos[0] + $Win2Pos[2]
    $Win2Pos[3] = $Win2Pos[1] + $Win2Pos[3]
    
    _ArrayDisplay($Win1Pos)
    _ArrayDisplay($Win2Pos)
    
    Sleep(5000)
;math to figure out if they are in each others area
    
EndFunc

Func _WinGetByPID($iPID)
    Local $aWList = WinList()
    For $iCC = 1 To $aWList[0][0]
        If WinGetProcess($aWList[$iCC][1]) = $iPID And _
            BitAND(WinGetState($aWList[$iCC][1]), 2) Then
            Return $aWList[$iCC][0]
        EndIf
    Next
    Return SetError(1, 0, 0)
EndFunc

Edited by ken82m

 "I believe that when we leave a place, part of it goes with us and part of us remains... Go anywhere, when it is quiet, and just listen.. After a while, you will hear the echoes of all our conversations, every thought and word we've exchanged.... Long after we are gone our voices will linger in these walls for as long as this place remains."

nf67 Universalist

nf67

Posted
  • Author
Posted

Sorry, I've messed around with it a little bit but I really don't understand what it does and how it does that... :party:

Could you maybe create a little example with a MsgBox that pops up when there is a collision?

With a ball and a wall for example?

#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

 ;The ball.
$Ball = GUICreate("Ball", 150, 150, 200, 200)
GUISetBkColor(0x800000)
$CreateWall = GUICtrlCreateButton("Wall", 0, 32, 49, 17, $WS_GROUP)
$BallLabel = GUICtrlCreateLabel("Ball", 8, 8, 21, 17)
GUISetState(@SW_SHOW)

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
            
        Case $CreateWall
            
            ;The wall.
            $Wall = GUICreate("Wall", 150, 500, 300, 300)
            GUISetBkColor(0x808080)
            $WallLabel = GUICtrlCreateLabel("Wall", 8, 8, 25, 17)
            GUISetState(@SW_SHOW)
                    While 1
                    $nMsg = GUIGetMsg()
                    Switch $nMsg
                    Case $GUI_EVENT_CLOSE
                    Exit
                    EndSwitch
WEnd
    EndSwitch
WEnd

I'm pretty confused :)

martin Universalist

martin

Posted
Posted

Sorry, I've messed around with it a little bit but I really don't understand what it does and how it does that... :party:

Could you maybe create a little example with a MsgBox that pops up when there is a collision?

With a ball and a wall for example?

#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

 ;The ball.
$Ball = GUICreate("Ball", 150, 150, 200, 200)
GUISetBkColor(0x800000)
$CreateWall = GUICtrlCreateButton("Wall", 0, 32, 49, 17, $WS_GROUP)
$BallLabel = GUICtrlCreateLabel("Ball", 8, 8, 21, 17)
GUISetState(@SW_SHOW)

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
            
        Case $CreateWall
            
            ;The wall.
            $Wall = GUICreate("Wall", 150, 500, 300, 300)
            GUISetBkColor(0x808080)
            $WallLabel = GUICtrlCreateLabel("Wall", 8, 8, 25, 17)
            GUISetState(@SW_SHOW)
                    While 1
                    $nMsg = GUIGetMsg()
                    Switch $nMsg
                    Case $GUI_EVENT_CLOSE
                    Exit
                    EndSwitch
WEnd
    EndSwitch
WEnd

I'm pretty confused :)

Try this which is an extension of ken82m's post.

#include <array.au3>
$Win1 = Run("Notepad.exe")
Sleep(3000)
$Win1 = _WinGetByPID($Win1);get win handle to app window
$Win2 = Run("mspaint.exe")
Sleep(2000)
$Win2 = _WinGetByPID($Win2);get win handle to app window
While 1
   Sleep(10)
   If CheckCollission($Win1, $Win2) Then
      ToolTip("collision")
   Else
      ToolTip("")
   EndIf
WEnd
Func CheckCollission($Win1, $Win2)
  
   $Win1Pos = WinGetPos($Win1)
   $Win2Pos = WinGetPos($Win2)
  
   If _CheckOverlap($Win1Pos, $Win2Pos) Then Return True
   If _CheckOverlap($Win2Pos, $Win1Pos) Then Return True
EndFunc  ;==>CheckCollission
Func _WinGetByPID($iPID)
   Local $aWList = WinList()
   For $iCC = 1 To $aWList[0][0]
      If WinGetProcess($aWList[$iCC][1]) = $iPID And _
            BitAND(WinGetState($aWList[$iCC][1]), 2) Then
         Return $aWList[$iCC][0]
      EndIf
   Next
   Return SetError(1, 0, 0)
EndFunc  ;==>_WinGetByPID
Func _CheckOverlap($ar1, $a2)
   
   
   If _WinAPI_PtInRectEx($ar1[0], $ar1[1], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
   If _WinAPI_PtInRectEx($ar1[0] + $ar1[2], $ar1[1], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
   If _WinAPI_PtInRectEx($ar1[0] + $ar1[2], $ar1[1] + $ar1[3], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
   If _WinAPI_PtInRectEx($ar1[0], $ar1[1] + $ar1[3], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
   
   
EndFunc  ;==>_CheckOverlap
; Note this_WinAPI_PtInRectEx() Not the same as 1st post.
; Here Width & height used, NOT Bottom right corner position.
; Also, declared $tagREC.  $tagRECT required WinAPI.au3 to be included.
; Author - Malkey
Func _WinAPI_PtInRectEx($iX, $iY, $iLeft, $iTop, $iWidth, $iHeight)
Local $aResult, $tagREC = "int Left;int Top;int Right;int Bottom"
Local $tRect = DllStructCreate($tagREC)
DllStructSetData($tRect, "Left", $iLeft)
DllStructSetData($tRect, "Top", $iTop)
DllStructSetData($tRect, "Right", $iLeft + $iWidth)
DllStructSetData($tRect, "Bottom", $iTop + $iHeight)
$aResult = DllCall("User32.dll", "int", "PtInRect", "ptr", DllStructGetPtr($tRect), "int", $iX, "int", $iY)
Return $aResult[0] <> 0
EndFunc
Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.
ken82m Universalist

ken82m

Posted
Posted

Thank you, I really didn't feel like figuring out the formula, I never said math was my strongpoint lol :)

 "I believe that when we leave a place, part of it goes with us and part of us remains... Go anywhere, when it is quiet, and just listen.. After a while, you will hear the echoes of all our conversations, every thought and word we've exchanged.... Long after we are gone our voices will linger in these walls for as long as this place remains."

ken82m Universalist

ken82m

Posted
Posted (edited)

Here's an example using your code.

Adlib is the best way to monitor since your using a loop within a loop.

#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

;===================================================================
;GUI's should be created before monitoring begins
;===================================================================
;The Wall
$Wall = GUICreate("Wall", 150, 500, 300, 300)
GUISetBkColor(0x808080)
$WallLabel = GUICtrlCreateLabel("Wall", 8, 8, 25, 17)

;The ball.
$Ball = GUICreate("Ball", 150, 150, 200, 200)
GUISetBkColor(0x800000)
$CreateWall = GUICtrlCreateButton("Wall", 0, 32, 49, 17, $WS_GROUP)
$BallLabel = GUICtrlCreateLabel("Ball", 8, 8, 21, 17)
GUISetState(@SW_SHOW)
;===================================================================

AdlibEnable("MonitorWindows", 10); Monitor for collissions

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
            
        Case $CreateWall
         ;The wall.
            GUICtrlSetData($WallLabel, "Wall"); update label text if you needed to
            GUISetState(@SW_SHOW, $Wall)
                While 1
                    $nMsg = GUIGetMsg()
                        Switch $nMsg
                    Case $GUI_EVENT_CLOSE
                        Exit
                    EndSwitch
                WEnd
        EndSwitch
WEnd


;==================================================================================
; FUNCTIONS FOR CHECK COLLISSION
;==================================================================================
Func MonitorWindows()
    If BitAND(WinGetState($Ball), 2) AND BitAND(WinGetState($Wall), 2) AND CheckCollission($Ball, $Wall) Then
        ToolTip("collision")
    Else
        ToolTip("")
    EndIf
EndFunc


Func CheckCollission($Win1, $Win2)
  
   $Win1Pos = WinGetPos($Win1)
    If @error Then 
        MsgBox(0,"","Error Reading Win1")
        Return 0
    EndIf
   $Win2Pos = WinGetPos($Win2)
   If @error Then 
        MsgBox(0,"","Error Reading Win2")
        Return 0
    EndIf
  
   If _CheckOverlap($Win1Pos, $Win2Pos) Then Return True
   If _CheckOverlap($Win2Pos, $Win1Pos) Then Return True
EndFunc;==>CheckCollission

Func _WinGetByPID($iPID)
   Local $aWList = WinList()
   For $iCC = 1 To $aWList[0][0]
      If WinGetProcess($aWList[$iCC][1]) = $iPID And _
            BitAND(WinGetState($aWList[$iCC][1]), 2) Then
         Return $aWList[$iCC][0]
      EndIf
   Next
   Return SetError(1, 0, 0)
EndFunc;==>_WinGetByPID

Func _CheckOverlap($ar1, $a2)
   If _WinAPI_PtInRectEx($ar1[0], $ar1[1], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
   If _WinAPI_PtInRectEx($ar1[0] + $ar1[2], $ar1[1], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
   If _WinAPI_PtInRectEx($ar1[0] + $ar1[2], $ar1[1] + $ar1[3], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
   If _WinAPI_PtInRectEx($ar1[0], $ar1[1] + $ar1[3], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
EndFunc;==>_CheckOverlap

; Note this_WinAPI_PtInRectEx() Not the same as 1st post.
; Here Width & height used, NOT Bottom right corner position.
; Also, declared $tagREC.  $tagRECT required WinAPI.au3 to be included.
; Author - Malkey
Func _WinAPI_PtInRectEx($iX, $iY, $iLeft, $iTop, $iWidth, $iHeight)
Local $aResult, $tagREC = "int Left;int Top;int Right;int Bottom"
Local $tRect = DllStructCreate($tagREC)
DllStructSetData($tRect, "Left", $iLeft)
DllStructSetData($tRect, "Top", $iTop)
DllStructSetData($tRect, "Right", $iLeft + $iWidth)
DllStructSetData($tRect, "Bottom", $iTop + $iHeight)
$aResult = DllCall("User32.dll", "int", "PtInRect", "ptr", DllStructGetPtr($tRect), "int", $iX, "int", $iY)
Return $aResult[0] <> 0
EndFunc
Edited by ken82m

 "I believe that when we leave a place, part of it goes with us and part of us remains... Go anywhere, when it is quiet, and just listen.. After a while, you will hear the echoes of all our conversations, every thought and word we've exchanged.... Long after we are gone our voices will linger in these walls for as long as this place remains."

Yogui Seeker

Yogui

Posted
Posted

just for fun ...

#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

;===================================================================
;GUI's should be created before monitoring begins
;===================================================================
;The Wall
$Wall = GUICreate("Wall", 150, 500, 300, 300)
GUISetBkColor(0x808080)
$WallLabel = GUICtrlCreateLabel("Wall", 8, 8, 25, 17)

;The ball.
$Ball = GUICreate("Ball", 150, 150, 200, 200)
GUISetBkColor(0x800000)
$CreateWall = GUICtrlCreateButton("Wall", 0, 32, 49, 17, $WS_GROUP)
$BallLabel = GUICtrlCreateLabel("Ball", 8, 8, 21, 17)
GUISetState(@SW_SHOW)
;===================================================================

AdlibEnable("MonitorWindows", 10); Monitor for collissions

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

        Case $CreateWall
        ;The wall.
            GUICtrlSetData($WallLabel, "Wall"); update label text if you needed to
            GUISetState(@SW_SHOW, $Wall)
            While 1
                $nMsg = GUIGetMsg()
                Switch $nMsg
                    Case $GUI_EVENT_CLOSE
                        Exit
                EndSwitch
            WEnd
    EndSwitch
WEnd


;==================================================================================
; FUNCTIONS FOR CHECK COLLISSION
;==================================================================================
Func MonitorWindows()
    If BitAND(WinGetState($Ball), 2) And BitAND(WinGetState($Wall), 2) And CheckCollission($Ball, $Wall) Then
        ToolTip("collision")
        $size = WinGetPos("Ball")
        For $i = 1 To 10
            WinMove("Ball", "", $size[0] + 5, $size[1] + 5, $size[2], $size[3])
;~          sleep(500)
            WinMove("Ball", "", $size[0] - 5, $size[1] - 5, $size[2], $size[3])
        Next
    Else
        ToolTip("")
    EndIf
EndFunc  ;==>MonitorWindows


Func CheckCollission($Win1, $Win2)

    $Win1Pos = WinGetPos($Win1)
    If @error Then
        MsgBox(0, "", "Error Reading Win1")
        Return 0
    EndIf
    $Win2Pos = WinGetPos($Win2)
    If @error Then
        MsgBox(0, "", "Error Reading Win2")
        Return 0
    EndIf

    If _CheckOverlap($Win1Pos, $Win2Pos) Then Return True
    If _CheckOverlap($Win2Pos, $Win1Pos) Then Return True
EndFunc  ;==>CheckCollission

Func _WinGetByPID($iPID)
    Local $aWList = WinList()
    For $iCC = 1 To $aWList[0][0]
        If WinGetProcess($aWList[$iCC][1]) = $iPID And _
                BitAND(WinGetState($aWList[$iCC][1]), 2) Then
            Return $aWList[$iCC][0]
        EndIf
    Next
    Return SetError(1, 0, 0)
EndFunc  ;==>_WinGetByPID

Func _CheckOverlap($ar1, $a2)
    If _WinAPI_PtInRectEx($ar1[0], $ar1[1], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
    If _WinAPI_PtInRectEx($ar1[0] + $ar1[2], $ar1[1], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
    If _WinAPI_PtInRectEx($ar1[0] + $ar1[2], $ar1[1] + $ar1[3], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
    If _WinAPI_PtInRectEx($ar1[0], $ar1[1] + $ar1[3], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
EndFunc  ;==>_CheckOverlap

; Note this_WinAPI_PtInRectEx() Not the same as 1st post.
; Here Width & height used, NOT Bottom right corner position.
; Also, declared $tagREC.  $tagRECT required WinAPI.au3 to be included.
; Author - Malkey
Func _WinAPI_PtInRectEx($iX, $iY, $iLeft, $iTop, $iWidth, $iHeight)
    Local $aResult, $tagREC = "int Left;int Top;int Right;int Bottom"
    Local $tRect = DllStructCreate($tagREC)
    DllStructSetData($tRect, "Left", $iLeft)
    DllStructSetData($tRect, "Top", $iTop)
    DllStructSetData($tRect, "Right", $iLeft + $iWidth)
    DllStructSetData($tRect, "Bottom", $iTop + $iHeight)
    $aResult = DllCall("User32.dll", "int", "PtInRect", "ptr", DllStructGetPtr($tRect), "int", $iX, "int", $iY)
    Return $aResult[0] <> 0
EndFunc  ;==>_WinAPI_PtInRectEx
Valuater Universalist

Valuater

Posted
Posted

Might as well make it a "Ball" lol

#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

;===================================================================
;GUI's should be created before monitoring begins
;===================================================================
;The Wall
$Wall = GUICreate("Wall", 150, 500, 300, 300)
GUISetBkColor(0x808080)
$WallLabel = GUICtrlCreateLabel("Wall", 8, 8, 25, 17)

;The ball.
$Ball = GUICreate("Ball", 150, 120, 200, 200)
GUISetBkColor(0x800000)
$CreateWall = GUICtrlCreateButton("Wall", 85, 80, 49, 17, $WS_GROUP)
$BallLabel = GUICtrlCreateLabel("Ball", 95, 60, 21, 17)
_GuiRoundCorners($Ball, 75, 75, 75, 75)
GUISetState(@SW_SHOW)
;===================================================================

AdlibEnable("MonitorWindows", 10); Monitor for collissions

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

        Case $CreateWall
        ;The wall.
            GUICtrlSetData($WallLabel, "Wall"); update label text if you needed to
            GUISetState(@SW_SHOW, $Wall)
            While 1
                $nMsg = GUIGetMsg()
                Switch $nMsg
                    Case $GUI_EVENT_CLOSE
                        Exit
                EndSwitch
            WEnd
    EndSwitch
WEnd


;==================================================================================
; FUNCTIONS FOR CHECK COLLISSION
;==================================================================================
Func MonitorWindows()
    If BitAND(WinGetState($Ball), 2) And BitAND(WinGetState($Wall), 2) And CheckCollission($Ball, $Wall) Then
        ToolTip("collision")
        $size = WinGetPos("Ball")
        For $i = 1 To 10
            WinMove("Ball", "", $size[0] + 5, $size[1] + 5, $size[2], $size[3])
;~             sleep(500)
            WinMove("Ball", "", $size[0] - 5, $size[1] - 5, $size[2], $size[3])
        Next
    Else
        ToolTip("")
    EndIf
EndFunc  ;==>MonitorWindows


Func CheckCollission($Win1, $Win2)

    $Win1Pos = WinGetPos($Win1)
    If @error Then
        MsgBox(0, "", "Error Reading Win1")
        Return 0
    EndIf
    $Win2Pos = WinGetPos($Win2)
    If @error Then
        MsgBox(0, "", "Error Reading Win2")
        Return 0
    EndIf

    If _CheckOverlap($Win1Pos, $Win2Pos) Then Return True
    If _CheckOverlap($Win2Pos, $Win1Pos) Then Return True
EndFunc  ;==>CheckCollission

Func _WinGetByPID($iPID)
    Local $aWList = WinList()
    For $iCC = 1 To $aWList[0][0]
        If WinGetProcess($aWList[$iCC][1]) = $iPID And _
                BitAND(WinGetState($aWList[$iCC][1]), 2) Then
            Return $aWList[$iCC][0]
        EndIf
    Next
    Return SetError(1, 0, 0)
EndFunc  ;==>_WinGetByPID

Func _CheckOverlap($ar1, $a2)
    If _WinAPI_PtInRectEx($ar1[0], $ar1[1], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
    If _WinAPI_PtInRectEx($ar1[0] + $ar1[2], $ar1[1], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
    If _WinAPI_PtInRectEx($ar1[0] + $ar1[2], $ar1[1] + $ar1[3], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
    If _WinAPI_PtInRectEx($ar1[0], $ar1[1] + $ar1[3], $a2[0], $a2[1], $a2[2], $a2[3]) Then Return True
EndFunc  ;==>_CheckOverlap

; Note this_WinAPI_PtInRectEx() Not the same as 1st post.
; Here Width & height used, NOT Bottom right corner position.
; Also, declared $tagREC.  $tagRECT required WinAPI.au3 to be included.
; Author - Malkey
Func _WinAPI_PtInRectEx($iX, $iY, $iLeft, $iTop, $iWidth, $iHeight)
    Local $aResult, $tagREC = "int Left;int Top;int Right;int Bottom"
    Local $tRect = DllStructCreate($tagREC)
    DllStructSetData($tRect, "Left", $iLeft)
    DllStructSetData($tRect, "Top", $iTop)
    DllStructSetData($tRect, "Right", $iLeft + $iWidth)
    DllStructSetData($tRect, "Bottom", $iTop + $iHeight)
    $aResult = DllCall("User32.dll", "int", "PtInRect", "ptr", DllStructGetPtr($tRect), "int", $iX, "int", $iY)
    Return $aResult[0] <> 0
EndFunc  ;==>_WinAPI_PtInRectEx

Func _GuiRoundCorners($h_win, $i_x1, $i_y1, $i_x3, $i_y3) ; Gary Frost
    Local $XS_pos, $XS_ret, $XS_ret2
    $XS_pos = WinGetPos($h_win)
    $XS_ret = DllCall("gdi32.dll", "long", "CreateRoundRectRgn", "long", $i_x1, "long", $i_y1, "long", $XS_pos[2], "long", $XS_pos[3], "long", $i_x3, "long", $i_y3)
    If $XS_ret[0] Then
        $XS_ret2 = DllCall("user32.dll", "long", "SetWindowRgn", "hwnd", $h_win, "long", $XS_ret[0], "int", 1)
    EndIf
EndFunc   ;==>_GuiRoundCorners

8)

NEWHeader1.png

ken82m Universalist

ken82m

Posted
Posted

lol, yeah no extra charge for the wall :)

 "I believe that when we leave a place, part of it goes with us and part of us remains... Go anywhere, when it is quiet, and just listen.. After a while, you will hear the echoes of all our conversations, every thought and word we've exchanged.... Long after we are gone our voices will linger in these walls for as long as this place remains."

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