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Copy pathBoard.asm
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Board.asm
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.386
.model flat, stdcall
.stack 4096
INCLUDE Irvine32.inc
INCLUDE Macros.inc
INCLUDE ByteVector.inc
INCLUDE Board.inc
INCLUDE MinHeap.inc
.DATA
hHeap HANDLE ?
; 12 Bytes
mainByteSize DWORD sizeof Board
; Max buffer size for read file
BUFFERSIZE = 9
buffer BYTE BUFFERSIZE+1 DUP(?)
.CODE
; Instance Methods - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_CreateObj PROC uses ecx esi edx
; Allocates 8 Bytes and creates Board instance
; @return EAX - Address of new board instance
; - - - - - - - - - - - - - - - - - - - - - - - - -
; * * * * * * * * *
; Macros
NewInstanceAddress EQU esi
; * * * * * * * * *
INVOKE GetProcessHeap
mov hHeap, eax
INVOKE HeapAlloc, hHeap, HEAP_ZERO_MEMORY, mainByteSize
mov NewInstanceAddress, eax
; Creates byteVector for VectorPtr member
call BV_CreateObj
mov DWORD PTR [NewInstanceAddress], eax
; Creates byteVector for moveVectorPtr member
call BV_CreateObj
add NewInstanceAddress, 8
mov DWORD PTR [NewInstanceAddress], eax
; Restore original address in eax as return value
sub NewInstanceAddress, 8
mov eax, NewInstanceAddress
RET
B_CreateObj ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_MakeCopy PROC uses ebx ecx edx ebp esi
; Makes a copy instance of the current instance
; @param this_ptr - Address of current instance
; @return EAX - Address of new instance
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 4, 0 ; 1 LOCAL
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 28]
; Local
CopyBoardPtr EQU [ebp - 4]
; Macros
Instance EQU (Board PTR [ebx])
BVPtr EQU edx
HeapIter EQU esi
; * * * * * * * * *
mov ebx, this_ptr
; Allocates new space for a copy
INVOKE HeapAlloc, hHeap, HEAP_ZERO_MEMORY, mainByteSize
mov HeapIter, eax
mov CopyBoardPtr, eax
; Creates a copy of the bytevector
mov BVPtr, Instance.VectorPtr
push BVPtr
call BV_MakeCopy
; Stores copy of bytevector in board copy
mov DWORD PTR [heapIter], eax
add heapIter, TYPE DWORD
; Copies zeropos, dirlock, and distance
mov al, Instance.ZeroPos
mov BYTE PTR [heapIter], al
add heapIter, TYPE BYTE
mov al, Instance.DirLock
mov BYTE PTR [heapIter], al
add heapIter, TYPE BYTE
mov al, Instance.Distance
mov BYTE PTR [heapIter], al
add heapIter, TYPE WORD
; Creates a copy of the Move Vector
mov BVPtr, Instance.MoveVectorPtr
push BVPtr
call BV_MakeCopy
mov DWORD PTR [heapIter], eax
; Restores address of new board to return EAX
mov eax, CopyBoardPtr
LEAVE
RET 4 ; ONE PARAMETER
B_MakeCopy ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_DeleteObj PROC uses eax ebx ecx ebp
; Frees the heap for the corresponding handle
; @param this_ptr - Pointer to address in heap
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 0, 0
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 24]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
mov ebx, this_ptr
; Deletes byte vector objects
push Instance.VectorPtr ; LEGAL?!
call BV_DeleteObj
push Instance.MoveVectorPtr
call BV_DeleteObj
; Deletes main object
INVOKE HeapFree, hHeap, 0, this_ptr
.IF eax == 0
mWriteLn "Failed to free heap for Board Object"
.ENDIF
QUIT:
LEAVE
RET 4
B_DeleteObj ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_SetupBoard PROC uses eax ebx ecx ebp esi
; Inserts parameters into byte vector for board
; @param this_ptr - Instance address
; @param v8 through v0 - Values to push into vector
; Note the values will be pushed in in-order (8 - 0)
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 4, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 28]
v8 EQU [ebp + 32]
v7 EQU [ebp + 36]
v6 EQU [ebp + 40]
v5 EQU [ebp + 44]
v4 EQU [ebp + 48]
v3 EQU [ebp + 52]
v2 EQU [ebp + 56]
v1 EQU [ebp + 60]
v0 EQU [ebp + 64]
; Locals
ByteVectorPtr EQU [ebp - 4]
; Macros
Instance EQU (Board PTR [ebx])
ValueIter EQU esi
; * * * * * * * * *
mov ebx, this_ptr
mov eax, Instance.VectorPtr
mov ByteVectorPtr, eax
; Sets up iter to go through value parameters
mov ValueIter, ebp
add ValueIter, 64 ; Set to v0
; Push all value parameters into vector
mov ecx, 9
INITLOOP:
push [ValueIter]
push ByteVectorPtr
call BV_PushBack
sub ValueIter, TYPE DWORD
loop INITLOOP
push ebx
call _B_FindZeroPos
push ebx
call _B_CalcDistance
LEAVE
RET 40 ; 10 PARAMETERS
B_SetupBoard ENDP
; BOARD METHODS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_SwapUp PROC uses ebx edx ebp
; Swaps the zero position up a row
; @param this_ptr - Address of instance
; @return EAX - 1: success, 0: failed
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 4, 0 ; 1 LOCAL
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 20]
; Local
BVPtr EQU [ebp - 4]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
mov ebx, this_ptr
movzx edx, Instance.ZeroPos
mov eax, Instance.VectorPtr
mov BVPtr, eax
; Throw if zeropos is in top row
.IF (edx < 3)
mov eax, 0
jmp QUIT
.ENDIF
; Swap zeropos and zeropos - 3
; then updates zeropos location
push edx
sub edx, 3
mov BYTE PTR [Instance.ZeroPos], dl
push edx
push BVPtr
call BV_Swap
; Sets Dirlock for the board to UP
mov BYTE PTR [Instance.DirLock], DIR_UP
; Adds direction to the move vector
movzx eax, Instance.DirLock
push eax
mov eax, Instance.MoveVectorPtr
push eax
call BV_PushBack
; Gets new Distance
push ebx
call _B_CalcDistance
; Sets eax as success
mov eax, 1
QUIT:
LEAVE
RET 4 ; 1 Param
B_SwapUp ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_TestUp PROC uses ebx edx ebp
; Tests if it is possible to move up
; @param this_ptr - Address of instance
; Return EAX - 1: Able, 0: Not Able
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 0, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 20]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
; Get zeropos into edx
mov ebx, this_ptr
movzx edx, Instance.ZeroPos
; Throw if zeropos is in top row
.IF (edx < 3)
mov eax, 0
jmp QUIT
.ENDIF
mov eax, 1
QUIT:
LEAVE
RET 4 ; ONE PARAM
B_TestUp ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_SwapRight PROC uses ebx ecx edx ebp
; Swaps the zero position right
; @param this_ptr - Address of instance
; @return EAX - 1: success, 0: failed
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 8, 0 ; 2 LOCAL
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 24]
; Local
BVPtr EQU [ebp - 4]
Mod3 EQU [ebp - 8]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
; Get zeropos into edx
mov ebx, this_ptr
movzx edx, Instance.ZeroPos
mov eax, Instance.VectorPtr
mov BVPtr, eax
; Gets modulo of zeropos % 3
push eax
push edx
mov eax, edx
mov edx, 0
mov ecx, 3
div ecx
mov Mod3, edx
pop edx
pop eax
; Throw if zeropos is in right column
mov ecx, Mod3
.IF (ecx == 2)
mov eax, 0
jmp QUIT
.ENDIF
; Swap zeropos and zeropos + 1
; then updates zeropos location
push edx
add edx, 1
mov BYTE PTR [Instance.ZeroPos], dl
push edx
push BVPtr
call BV_Swap
; Sets Dirlock for the board to RIGHT
mov BYTE PTR [Instance.DirLock], DIR_RIGHT
; Adds direction to the move vector
movzx eax, Instance.DirLock
push eax
mov eax, Instance.MoveVectorPtr
push eax
call BV_PushBack
; Gets new Distance
push ebx
call _B_CalcDistance
; Sets eax as success
mov eax, 1
QUIT:
LEAVE
RET 4 ; 1 Param
B_SwapRight ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_TestRight PROC uses ebx ecx edx ebp
; Tests if it is possible to move right
; @param this_ptr - Address of instance
; Return EAX - 1: Able, 0: Not Able
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 4, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 24]
; Locals
Mod3 EQU [ebp - 4]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
; Get zeropos into edx
mov ebx, this_ptr
movzx edx, Instance.ZeroPos
; Gets modulo of zeropos % 3
push eax
push edx
mov eax, edx
mov edx, 0
mov ecx, 3
div ecx
mov Mod3, edx
pop edx
pop eax
; Throw if zeropos is in right column
mov ecx, Mod3
.IF (ecx == 2)
mov eax, 0
jmp QUIT
.ENDIF
mov eax, 1
QUIT:
LEAVE
RET 4 ; ONE PARAM
B_TestRight ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_SwapDown PROC uses ebx edx ebp
; Swaps the zero position down a row
; @param this_ptr - Address of instance
; @return EAX - 1: success, 0: failed
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 4, 0 ; 1 LOCAL
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 20]
; Local
BVPtr EQU [ebp - 4]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
; Get zeropos into edx
mov ebx, this_ptr
movzx edx, Instance.ZeroPos
mov eax, Instance.VectorPtr
mov BVPtr, eax
; Throw if zeropos is in bottom row
.IF (edx > 5)
mov eax, 0
jmp QUIT
.ENDIF
; Swap zeropos and zeropos + 3
; then updates zeropos location
push edx
add edx, 3
mov BYTE PTR [Instance.ZeroPos], dl
push edx
push BVPtr
call BV_Swap
; Sets Dirlock for the board to DOWN
mov BYTE PTR [Instance.DirLock], DIR_DOWN
; Adds direction to the move vector
movzx eax, Instance.DirLock
push eax
mov eax, Instance.MoveVectorPtr
push eax
call BV_PushBack
; Gets new Distance
push ebx
call _B_CalcDistance
; Sets eax as success
mov eax, 1
QUIT:
LEAVE
RET 4 ; 1 Param
B_SwapDown ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_TestDown PROC uses ebx edx ebp
; Tests if it is possible to move down
; @param this_ptr - Address of instance
; Return EAX - 1: Able, 0: Not Able
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 0, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 20]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
; Get zeropos into edx
mov ebx, this_ptr
movzx edx, Instance.ZeroPos
; Throw if zeropos is in top row
.IF (edx > 5)
mov eax, 0
jmp QUIT
.ENDIF
mov eax, 1
QUIT:
LEAVE
RET 4 ; ONE PARAM
B_TestDown ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_SwapLeft PROC uses ebx ecx edx ebp
; Swaps the zero position left
; @param this_ptr - Address of instance
; @return EAX - 1: success, 0: failed
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 8, 0 ; 2 LOCAL
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 24]
; Local
BVPtr EQU [ebp - 4]
Mod3 EQU [ebp - 8]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
; Get zeropos into edx
mov ebx, this_ptr
movzx edx, Instance.ZeroPos
mov eax, Instance.VectorPtr
mov BVPtr, eax
; Gets modulo of zeropos % 3
push eax
push edx
mov eax, edx
mov edx, 0
mov ecx, 3
div ecx
mov Mod3, edx
pop edx
pop eax
; Throw if zeropos is in right column
mov ecx, Mod3
.IF (ecx == 0)
mov eax, 0
jmp QUIT
.ENDIF
; Swap zeropos and zeropos - 1
; then updates zeropos location
push edx
sub edx, 1
mov BYTE PTR [Instance.ZeroPos], dl
push edx
push BVPtr
call BV_Swap
; Sets Dirlock for the board to LEFT
mov BYTE PTR [Instance.DirLock], DIR_LEFT
; Adds direction to the move vector
movzx eax, Instance.DirLock
push eax
mov eax, Instance.MoveVectorPtr
push eax
call BV_PushBack
; Gets new Distance
push ebx
call _B_CalcDistance
; Sets eax as success
mov eax, 1
QUIT:
LEAVE
RET 4 ; 1 Param
B_SwapLeft ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_TestLeft PROC uses ebx ecx edx ebp
; Tests if it is possible to move left
; @param this_ptr - Address of instance
; Return EAX - 1: Able, 0: Not Able
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 4, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 24]
; Locals
Mod3 EQU [ebp - 4]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
; Get zeropos into edx
mov ebx, this_ptr
movzx edx, Instance.ZeroPos
; Gets modulo of zeropos % 3
push eax
push edx
mov eax, edx
mov edx, 0
mov ecx, 3
div ecx
mov Mod3, edx
pop edx
pop eax
; Throw if zeropos is in right column
mov ecx, Mod3
.IF (ecx == 0)
mov eax, 0
jmp QUIT
.ENDIF
mov eax, 1
QUIT:
LEAVE
RET 4 ; ONE PARAM
B_TestLeft ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_PrintBoard PROC uses eax ebx ecx edx ebp esi
; Prints the board object to console
; @param this_ptr - Pointer to instance
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 4, 0 ; 1 LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 32] ; 6 offset
; Local
BVPtr EQU [ebp - 4]
; Macros
Instance EQU (Board PTR [ebx])
BVIter EQU esi
; * * * * * * * * *
call CRLF
; Set up local variables
mov ebx, this_ptr
mov BVIter, 0
mov eax, Instance.VectorPtr
mov BVPtr, eax
; Iterate through bytevector
mov ecx, 9
mWrite " "
PRINTLOOP:
push BVIter
push BVPtr
call BV_At
call WriteDec
mWrite " "
; Prints NewLine every three items
; Notes: Modulo required edx == 0
; Implicitly divides eax and stores
; remainder in edx
mov eax, BVIter
mov ebx, 3
mov edx, 0
div ebx
.IF (edx == 2)
call CRLF
call CRLF
mWrite " "
.ENDIF
inc BVIter
loop PRINTLOOP
call CRLF
LEAVE
RET 4 ; ONE PARAMETER
B_PrintBoard ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_PrintMoves PROC uses eax ebx ebp
; Prints the move vector using the BV_Print method
; @param this_ptr - Address of instance
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 0, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 20] ; 3 offset
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
mov ebx, this_ptr
mov eax, Instance.MoveVectorPtr
push eax
call BV_Print
LEAVE
RET 4 ; ONE PARAM
B_PrintMoves ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_GetDistance PROC uses ebx ebp
; Prints the board object to console
; @param this_ptr - Pointer to instance
; @return EAX - Distance member value
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 0, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 16]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
mov ebx, this_ptr
movzx eax, Instance.Distance
LEAVE
RET 4 ; ONE PARAM
B_GetDistance ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_GetDirLock PROC uses ebx ebp
; Prints the board object to console
; @param this_ptr - Pointer to instance
; @return EAX - Distance member value
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 0, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 16]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
mov ebx, this_ptr
movzx eax, Instance.DirLock
LEAVE
RET 4 ; ONE PARAM
B_GetDirLock ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_IsSolvable PROC uses ebx
; Checks if the board is solvable
; @param this_ptr - Address to instance
; @return EAX - 1: solvable, 0: not solvable
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 0, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 12]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
push this_ptr
call _B_CalcInversions
; True if the inversions are even
test eax, 1
jnz ISODD
ISEVEN:
mov eax, 1
jmp QUIT
ISODD:
mov eax, 0
QUIT:
LEAVE
RET 4 ; ONE PARAMETER
B_IsSolvable ENDP
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_GenerateChildren PROC uses eax ebx ecx edx ebp
; Generates all possible children (possible swaps)
; by creating copies of the boards and
; appends it to a heap object
; @param this_ptr - Address of instance
; @param mh_ptr - Address of minheap instance
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 0, 0 ; NO LOCALS
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 28]
mh_ptr EQU [ebp + 32]
; Macros
Instance EQU (Board PTR [ebx])
; * * * * * * * * *
mov ebx, this_ptr
; Skip up child if not possible or previous location
push this_ptr
call B_TestUp
.IF (eax == 0)
jmp MAKERIGHT
.ENDIF
movzx eax, Instance.DirLock
.IF (eax == DIR_DOWN)
jmp MAKERIGHT
.ENDIF
; Makes a copy of the board and swaps up
push this_ptr
call B_MakeCopy
push eax
push eax
call B_SwapUp
pop eax
; Adds board copy into pointer
push eax
push mh_ptr
call MH_Append
MAKERIGHT:
push this_ptr
call B_TestRight
.IF (eax == 0)
jmp MAKEDOWN
.ENDIF
movzx eax, Instance.DirLock
.IF (eax == DIR_LEFT)
jmp MAKEDOWN
.ENDIF
; Makes a copy of the board and swaps right
push this_ptr
call B_MakeCopy
push eax
push eax
call B_SwapRight
pop eax
; Adds board copy into pointer
push eax
push mh_ptr
call MH_Append
MAKEDOWN:
push this_ptr
call B_TestDown
.IF (eax == 0)
jmp MAKELEFT
.ENDIF
movzx eax, Instance.DirLock
.IF (eax == DIR_UP)
jmp MAKELEFT
.ENDIF
; Makes a copy of the board and swaps down
push this_ptr
call B_MakeCopy
push eax
push eax
call B_SwapDown
pop eax
; Adds board copy into pointer
push eax
push mh_ptr
call MH_Append
MAKELEFT:
push this_ptr
call B_TestLeft
.IF (eax == 0)
jmp QUIT
.ENDIF
movzx eax, Instance.DirLock
.IF (eax == DIR_RIGHT)
jmp QUIT
.ENDIF
; Makes a copy of the board and swaps left
push this_ptr
call B_MakeCopy
push eax
push eax
call B_SwapLeft
pop eax
; Adds board copy into pointer
push eax
push mh_ptr
call MH_Append
QUIT:
LEAVE
RET 8 ; TWO PARAMETERS
B_GenerateChildren ENDP
; FILE METHODS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; - - - - - - - - - - - - - - - - - - - - - - - - -
B_ReadFile PROC uses ebx ecx edx ebp esi
; Reads a board from a file and appends it to a Board object
; Note: The board object should have an empty byte vector!
; @param this_ptr - Address of instance
; @param file_name - Name of file to open (the offset)
; @return EAX - 1: Success, 0: Failed
; - - - - - - - - - - - - - - - - - - - - - - - - -
ENTER 8, 0 ; TWO LOCAL
; * * * * * * * * *
; Parameters
this_ptr EQU [ebp + 28]
file_name EQU [ebp + 32]
; Locals
ByteVectorPtr EQU [ebp - 4]
FileHandle EQU [ebp - 8]
; Macros
Instance EQU (Board PTR [ebx])
BufferIter EQU esi
; * * * * * * * * *
mWriteLn "Reading a text file..."
; Stores board and vector pointers
mov ebx, this_ptr
mov eax, Instance.VectorPtr
mov ByteVectorPtr, eax
; Gets file handle for given file name
mov edx, file_name
call OpenInputFile
.IF (eax == INVALID_HANDLE_VALUE)
mWriteLn "Error in B_ReadFile! Failed to open file"
mov eax, 0 ; Failed return
jmp QUIT
.ENDIF