what means this packets, packet 07 activates a room and packet 08 deactivates a room, these are virtual rooms with a constant size of 1 screen.

you can see it in this graphic:

[img]http://images.cjb.net/e75bd.jpg[/img]

normally 9 rooms are active per time, except when you are in a border or a corner then will be 6 or 4.

in d2 each room is an object not just a pieze of a big map. if d2 tryes to load a unit in a nonloaded room it will crash.

Our player is allways on the center room

in the graphic red rooms are active, if we move to the room 2 then: a 07 packet will come for: 16, 15, 14 and then a 08 for: 5, 6, 7... this means that 5,6,7 will be removed as objects and 14,15,16 will be added.

again: we move from 2 to 9 then: 07 packet will come for 11, 12, 13 and 08 for 4, 3 and 16.

the format...

07 (word) x pos (word) y pos (byte) level.

using level we can get the amounts of rooms from levels.txt.

the x and y pos must be mul by 5 to matter with the subtile cordinates that we normally use.

checking each room of one level, going from object to object, for example monsters, urns, etc you can make a very basic clientless pathing runtime like me (H).

well, this is all that i know about this packet... surelly this post is plagued of errors :( but i think it can be usefull for others to research new things.

Shadow.

lol, isnt this already documented in d2gs packet research topic?
I dont get why it needs re-documenting, its very very basic.  :-*

[quote]
0x07
D2GS_MAPADD
Lengh = 6

07 C0 04 A8 03 01
(WORD) Floor Section X
(WORD) Floor Section Y
(BYTE) Floor Section ID

X and Y will not match up to the X and Y in witch you stand, this packet is for notifying D2 what floor file to load.
This is normal done in 4 sections at a time.


0x08
D2GS_MAPREM
Lengh = 6

08 D1 04 9E 03 01
(WORD) Floor Section X
(WORD) Floor Section Y
(BYTE) Floor Section ID

Speficys where to remove floor sections from the screen.
[/quote]


[quote]
X and Y will not match up to the X and Y in witch you stand, this packet is for notifying D2 what floor file to load.
[/quote]
it easy says: ignore this packet (?) lol
and it never says what to do with x and y....

[quote]
This is normal done in 4 sections at a time.
[/quote]
....

I removed this from BNBDR because it can use some *major* cleaning, and because we only need it in one place (here or there).  If it gets good we'll move this topic into BNBDR.

[quote author=ShadowDancer link=topic=15536.msg156754#msg156754 date=1155488046]
it easy says: ignore this packet (?) lol
and it never says what to do with x and y....
[/quote]
I dont mean to rude in anyway, but theres not much can be done with this unless you have some form of floor data to work with, for example:
[img]http://www.geocities.com/ringomail711/A1Town_w.gif[/img]
The place I would be looking into if I was you, would be 0x03.
It souldnt be to hard to find relationships between the seed in 0x03, and the shape of the map, depending what map you need to path find across, that is :)

[qoute]I dont mean to rude in anyway [/qoute]
yes, excuse me...


[qoute]It souldnt be to hard to find relationships between the seed in 0x03, and the shape of the map, depending what map you need to path find across, that is [/qoute]

i tryed to look what 03 does... and it does a lot of things ^^

from 1.10 libs:
[code]
packet 3:

(d2common)

D2Common.dll:00C214A0 ; ---------------------------------------------------------------------------
D2Common.dll:00C214A0 mov    edx, ds:dword_CAA620
D2Common.dll:00C214A6 test    edx, edx
D2Common.dll:00C214A8 jnz    short loc_C214C8
D2Common.dll:00C214AA push    251h
D2Common.dll:00C214AF push    offset aCProjectsD2_74          ; "C:\\projects\\D2\\head\\Diablo2\\Source\\D2Co"...
D2Common.dll:00C214B4 push    offset aSgptdrlglevelt          ; "sgptDrlgLevelTypeDefs"
D2Common.dll:00C214B9 call    near ptr unk_C84352
D2Common.dll:00C214BE add    esp, 0Ch
D2Common.dll:00C214C1 push    0FFFFFFFFh
D2Common.dll:00C214C3 call    near ptr unk_C8446F
D2Common.dll:00C214C8
D2Common.dll:00C214C8 loc_C214C8:                            ; CODE XREF: D2Common.dll:00C214A8j
D2Common.dll:00C214C8 mov    eax, [esp+4]
D2Common.dll:00C214CC lea    ecx, [eax+eax*2]
D2Common.dll:00C214CF lea    ecx, [ecx+ecx*4]
D2Common.dll:00C214D2 shl    ecx, 4
D2Common.dll:00C214D5 add    ecx, eax
D2Common.dll:00C214D7 lea    eax, [edx+ecx*8]
D2Common.dll:00C214DA test    eax, eax
D2Common.dll:00C214DC jz      short loc_C214F4
D2Common.dll:00C214DE mov    dl, [eax+780h]
D2Common.dll:00C214E4 mov    al, [esp+8]
D2Common.dll:00C214E8 cmp    dl, al
D2Common.dll:00C214EA jnz    short loc_C214F4
D2Common.dll:00C214EC mov    eax, 1
D2Common.dll:00C214F1 retn    8
D2Common.dll:00C214F4 ; ---------------------------------------------------------------------------
D2Common.dll:00C214F4
D2Common.dll:00C214F4 loc_C214F4:                            ; CODE XREF: D2Common.dll:00C214DCj
D2Common.dll:00C214F4                                        ; D2Common.dll:00C214EAj
D2Common.dll:00C214F4 xor    eax, eax
D2Common.dll:00C214F6 retn    8
D2Common.dll:00C214F6 ; ---------------------------------------------------------------------------


.text:6FDBA040 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
.text:6FDBA040
.text:6FDBA040
.text:6FDBA040                public D2Common_11126
.text:6FDBA040 D2Common_11126  proc near
.text:6FDBA040
.text:6FDBA040 arg_0          = dword ptr  4
.text:6FDBA040 arg_4          = dword ptr  8
.text:6FDBA040
.text:6FDBA040                mov    eax, [esp+arg_0]
.text:6FDBA044                test    eax, eax
.text:6FDBA046                jz      short locret_6FDBA076
.text:6FDBA048                cmp    dword ptr [eax], 3
.text:6FDBA04B                jnz    short locret_6FDBA076
.text:6FDBA04D                mov    eax, [eax+14h]
.text:6FDBA050                test    eax, eax
.text:6FDBA052                jz      short locret_6FDBA076
.text:6FDBA054                mov    ecx, [esp+arg_4]
.text:6FDBA058                test    ecx, ecx
.text:6FDBA05A                jg      short loc_6FDBA065
.text:6FDBA05C                xor    ecx, ecx
.text:6FDBA05E                mov    [eax+0Ah], cx
.text:6FDBA062                retn    8
.text:6FDBA065 ; ---------------------------------------------------------------------------
.text:6FDBA065
.text:6FDBA065 loc_6FDBA065:                          ; CODE XREF: D2Common_11126+1Aj
.text:6FDBA065                cmp    ecx, 7FFFh
.text:6FDBA06B                jl      short loc_6FDBA072
.text:6FDBA06D                mov    ecx, 7FFFh
.text:6FDBA072
.text:6FDBA072 loc_6FDBA072:                          ; CODE XREF: D2Common_11126+2Bj
.text:6FDBA072                mov    [eax+0Ah], cx
.text:6FDBA076
.text:6FDBA076 locret_6FDBA076:                        ; CODE XREF: D2Common_11126+6j
.text:6FDBA076                                        ; D2Common_11126+Bj ...
.text:6FDBA076                retn    8
.text:6FDBA076 D2Common_11126  endp


.text:6FDBA080 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
.text:6FDBA080
.text:6FDBA080
.text:6FDBA080                public D2Common_11127
.text:6FDBA080 D2Common_11127  proc near
.text:6FDBA080
.text:6FDBA080 arg_0          = dword ptr  4
.text:6FDBA080
.text:6FDBA080                mov    eax, [esp+arg_0]
.text:6FDBA084                test    eax, eax
.text:6FDBA086                jz      short loc_6FDBA09B
.text:6FDBA088                cmp    dword ptr [eax], 3
.text:6FDBA08B                jnz    short loc_6FDBA09B
.text:6FDBA08D                mov    eax, [eax+14h]
.text:6FDBA090                test    eax, eax
.text:6FDBA092                jz      short loc_6FDBA09B
.text:6FDBA094                movsx  eax, word ptr [eax+0Ah]
.text:6FDBA098                retn    4
.text:6FDBA09B ; ---------------------------------------------------------------------------
.text:6FDBA09B
.text:6FDBA09B loc_6FDBA09B:                          ; CODE XREF: D2Common_11127+6j
.text:6FDBA09B                                        ; D2Common_11127+Bj ...
.text:6FDBA09B                xor    eax, eax
.text:6FDBA09D                retn    4
.text:6FDBA09D D2Common_11127  endp




(d2client)
.text:6FAB2160                mov    edx, [ecx+8]
.text:6FAB2163                xor    eax, eax
.text:6FAB2165                mov    ax, [ecx+6]
.text:6FAB2169                push    eax
.text:6FAB216A                push    edx
.text:6FAB216B                mov    edx, [ecx+2]
.text:6FAB216E                mov    cl, [ecx+1]
.text:6FAB2171                call    sub_6FAA9290
.text:6FAB2176                retn




Stack[000016AC]:0012FB58 db    3
Stack[000016AC]:0012FB59 db    0
Stack[000016AC]:0012FB5A db  15h
Stack[000016AC]:0012FB5B db    9
Stack[000016AC]:0012FB5C db 0E4h ; S
Stack[000016AC]:0012FB5D db  60h ; `
Stack[000016AC]:0012FB5E db    1
Stack[000016AC]:0012FB5F db    0
Stack[000016AC]:0012FB60 db  64h ; d
Stack[000016AC]:0012FB61 db  51h ; Q
Stack[000016AC]:0012FB62 db 0C6h ; ¦
Stack[000016AC]:0012FB63 db  24h ; $



.text:6FAA9290 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
.text:6FAA9290
.text:6FAA9290
.text:6FAA9290 sub_6FAA9290    proc near              ; CODE XREF: sub_6FAB2160+11p
.text:6FAA9290
.text:6FAA9290 var_CC          = dword ptr -0CCh
.text:6FAA9290 var_90          = dword ptr -90h
.text:6FAA9290 var_88          = dword ptr -88h
.text:6FAA9290 var_80          = dword ptr -80h
.text:6FAA9290 var_68          = dword ptr -68h
.text:6FAA9290 var_64          = dword ptr -64h
.text:6FAA9290 var_50          = dword ptr -50h
.text:6FAA9290 var_44          = dword ptr -44h
.text:6FAA9290 var_28          = dword ptr -28h
.text:6FAA9290
.text:6FAA9290                sub    esp, 6Ch
.text:6FAA9293                push    ebx
.text:6FAA9294                mov    ebx, ecx
.text:6FAA9296                mov    al, bl
.text:6FAA9298                push    ebp
.text:6FAA9299                push    esi
.text:6FAA929A                inc    al
.text:6FAA929C                push    edi
.text:6FAA929D                mov    ebp, edx
.text:6FAA929F                mov    byte ptr [esp+7Ch+var_68], al
.text:6FAA92A3                xor    edi, edi
.text:6FAA92A5
.text:6FAA92A5 loc_6FAA92A5:                          ; CODE XREF: sub_6FAA9290+57j
.text:6FAA92A5                mov    ecx, [esp+7Ch+var_68]
.text:6FAA92A9                push    ecx
.text:6FAA92AA                push    edi
.text:6FAA92AB                call    D2Common_11226
.text:6FAA92B0                test    eax, eax
.text:6FAA92B2                jz      short loc_6FAA92E3
.text:6FAA92B4                xor    esi, esi
.text:6FAA92B6
.text:6FAA92B6 loc_6FAA92B6:                          ; CODE XREF: sub_6FAA9290+51j
.text:6FAA92B6                lea    edx, [esp+84h+var_44]
.text:6FAA92BA                push    edx
.text:6FAA92BB                push    esi
.text:6FAA92BC                push    edi
.text:6FAA92BD                call    D2Common_11227
.text:6FAA92C2                mov    al, byte ptr [esp+90h+var_50]
.text:6FAA92C6                cmp    al, 30h
.text:6FAA92C8                jz      short loc_6FAA92DD
.text:6FAA92CA                test    al, al
.text:6FAA92CC                jz      short loc_6FAA92DD
.text:6FAA92CE                lea    eax, [esp+90h+var_50]
.text:6FAA92D2                lea    ecx, [esp+90h+var_80]
.text:6FAA92D6                push    eax
.text:6FAA92D7                push    ecx
.text:6FAA92D8                call    D2CMP_10095
.text:6FAA92DD
.text:6FAA92DD loc_6FAA92DD:                          ; CODE XREF: sub_6FAA9290+38j
.text:6FAA92DD                                        ; sub_6FAA9290+3Cj
.text:6FAA92DD                inc    esi
.text:6FAA92DE                cmp    esi, 20h
.text:6FAA92E1                jl      short loc_6FAA92B6
.text:6FAA92E3
.text:6FAA92E3 loc_6FAA92E3:                          ; CODE XREF: sub_6FAA9290+22j
.text:6FAA92E3                inc    edi
.text:6FAA92E4                cmp    edi, 24h
.text:6FAA92E7                jl      short loc_6FAA92A5
.text:6FAA92E9                lea    edx, [esp+98h+var_88]
.text:6FAA92ED                push    offset aDataGlobalTile ; "data\\global\\tiles\\act1\\barracks\\warp.dt"...
.text:6FAA92F2                push    edx
.text:6FAA92F3                call    D2CMP_10095
.text:6FAA92F8                lea    eax, [esp+0A0h+var_90]
.text:6FAA92FC                push    offset aDataGlobalTi_0 ; "data\\global\\tiles\\act1\\outdoors\\blank.d"...
.text:6FAA9301                push    eax
.text:6FAA9302                call    D2CMP_10095
.text:6FAA9307                mov    eax, dword_6FBA7984
.text:6FAA930C                test    eax, eax
.text:6FAA930E                jz      short loc_6FAA9316
.text:6FAA9310                push    eax
.text:6FAA9311                call    D2Common_10039
.text:6FAA9316
.text:6FAA9316 loc_6FAA9316:                          ; CODE XREF: sub_6FAA9290+7Ej
.text:6FAA9316                mov    esi, [esp+0ACh+var_28]
.text:6FAA931D                mov    cl, byte ptr dword_6FBA795C
.text:6FAA9323                push    offset loc_6FACD840
.text:6FAA9328                push    offset loc_6FACD660
.text:6FAA932D                push    esi
.text:6FAA932E                push    0
.text:6FAA9330                push    ecx
.text:6FAA9331                push    0
.text:6FAA9333                push    1
.text:6FAA9335                push    ebp
.text:6FAA9336                push    ebx
.text:6FAA9337                call    D2Common_10038
.text:6FAA933C                mov    cl, byte_6FBA79D0
.text:6FAA9342                mov    dword_6FBA7984, eax
.text:6FAA9347                test    cl, cl
.text:6FAA9349                jz      short loc_6FAA936C
.text:6FAA934B                cmp    bl, 1
.text:6FAA934E                jnz    short loc_6FAA936C
.text:6FAA9350                test    eax, eax
.text:6FAA9352                jz      short loc_6FAA936C
.text:6FAA9354                push    1
.text:6FAA9356                push    0
.text:6FAA9358                push    5
.text:6FAA935A                call    sub_6FB29370
.text:6FAA935F                mov    edx, dword_6FBA7984
.text:6FAA9365                push    eax
.text:6FAA9366                push    edx
.text:6FAA9367                call    D2Common_10932
.text:6FAA936C
.text:6FAA936C loc_6FAA936C:                          ; CODE XREF: sub_6FAA9290+B9j
.text:6FAA936C                                        ; sub_6FAA9290+BEj ...
.text:6FAA936C                mov    ecx, ebx
.text:6FAA936E                mov    byte_6FBA79D0, 0
.text:6FAA9375                and    ecx, 0FFh
.text:6FAA937B                call    sub_6FB245B0
.text:6FAA9380                mov    ecx, 1
.text:6FAA9385                call    sub_6FB242E0
.text:6FAA938A                mov    ecx, dword_6FBA7988
.text:6FAA9390                xor    eax, eax
.text:6FAA9392                mov    [ecx], eax
.text:6FAA9394                mov    [ecx+4], eax
.text:6FAA9397                mov    edx, dword_6FBA7988
.text:6FAA939D                mov    eax, [esp+0E4h+var_64]
.text:6FAA93A4                mov    [edx], ebp
.text:6FAA93A6                mov    ecx, dword_6FBA7988
.text:6FAA93AC                mov    [ecx+4], eax
.text:6FAA93AF                call    sub_6FACF730
.text:6FAA93B4                call    sub_6FAA4A30
.text:6FAA93B9                call    sub_6FB203C0
.text:6FAA93BE                mov    dword_6FBA798C, esi
.text:6FAA93C4                call    sub_6FB5CB60
.text:6FAA93C9                mov    cl, bl
.text:6FAA93CB                call    sub_6FB5C9E0
.text:6FAA93D0                lea    edx, [esp+0E4h+var_CC]
.text:6FAA93D4                push    ebp
.text:6FAA93D5                push    offset aSeedD  ; "Seed: %d"
.text:6FAA93DA                push    edx
.text:6FAA93DB                call    _sprintf
.text:6FAA93E0                lea    eax, [esp+0F0h+var_CC]
.text:6FAA93E4                push    eax
.text:6FAA93E5                call    Fog_10029
.text:6FAA93EA                add    esp, 10h
.text:6FAA93ED                mov    dword_6FB75814, 1
.text:6FAA93F7                call    ds:GetTickCount
.text:6FAA93FD                mov    ecx, dword_6FBA778C
.text:6FAA9403                add    eax, 2710h
.text:6FAA9408                pop    edi
.text:6FAA9409                pop    esi
.text:6FAA940A                pop    ebp
.text:6FAA940B                cmp    eax, ecx
.text:6FAA940D                pop    ebx
.text:6FAA940E                jbe    short loc_6FAA9415
.text:6FAA9410                mov    dword_6FBA778C, eax
.text:6FAA9415
.text:6FAA9415 loc_6FAA9415:                          ; CODE XREF: sub_6FAA9290+17Ej
.text:6FAA9415                add    esp, 6Ch
.text:6FAA9418                retn    8
.text:6FAA9418 sub_6FAA9290    endp ; sp = -68h
.text:6FAA9418
.text:6FAA9418 ; ---------------------------------------------------------------------------
.text:6FAA941B                align 10h
.text:6FAA9420
.text:6FAA9420 loc_6FAA9420:                          ; DATA XREF: sub_6FAA9450:loc_6FAA9542o
.text:6FAA9420                call    D2gfx_10024
.text:6FAA9425                call    D2gfx_10001
.text:6FAA942A                retn    0Ch
[/code]

seen the packet 03 it is like one param is used to inicialize a random function and based in it the map is builded.

Your on the right track now :)