AlliedModders - Utilize data structures?

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Utilize data structures?

Hey,

I've got this structure for CBaseCombatCharacter. How do i access its offsets? I need to access m_bPreventWeaponPickup to check if weapon pickup is prevented.

Would this be the appropriate way? I was trying out FindDataMapInfo, but couldn't figure how to check each slot?

PHP Code:


		
			
int offset    =    FindDataMapInfo(client, "m_bPreventWeaponPickup");

PHP Code:


		
			
00000000 CBaseCombatCharacter_data struc ; (sizeof=0x284, align=0x4, copyof_1628)

00000000                                         ; XREF: CTerrorPlayer/r

00000000 m_bForceServerRagdoll db ?

00000001 m_bPreventWeaponPickup db ?

00000002                 db ? ; undefined

00000003                 db ? ; undefined

00000004 m_flNextAttack  dd ?

00000008 m_eHull         dd ?

0000000C m_bloodColor    dd ?

00000010 m_flFieldOfView dd ?

00000014 m_HackedGunPos  dd 3 dup(?)

00000020 m_RelationshipString dd ?               ; offset

00000024 m_impactEnergyScale dd ?

00000028 m_weaponIDToIndex db 38 dup(?)

0000004E padding78       db 2 dup(?)

00000050 unknown80       db 16 dup(?)

00000060 m_LastHitGroup  dd ?

00000064 m_flDamageAccumulator dd ?

00000068 m_iDamageCount  dd ?

0000006C m_CurrentWeaponProficiency dd ?

00000070 m_Relationship  CBaseCombatCharacter_data::$FC97C2D5179B673732A0DC867F085A11 ?

00000084 m_hTriggerFogList CBaseCombatCharacter_data::$224CB0AA08B9BFA50E253E796AA37A5A ?

00000098 m_hLastFogTrigger dd ?

0000009C m_iAmmo         dd 32 dup(?)

0000011C m_hMyWeapons    dd 64 dup(?)

0000021C m_hActiveWeapon dd ?

00000220 UnknownITimer544 IntervalTimer ?

00000228 m_iUnknown552   dd ?

0000022C m_iUnknown556   dd ?

00000230 UnknownITimer560 IntervalTimer ?

00000238 m_iUnknown568   dd ?

0000023C UnknownITimer572 IntervalTimer ?

00000244 m_iUnknown580   dd ?

00000248 UnknownITimer584 IntervalTimer ?

00000250 m_iUnknown592   dd ?

00000254 UnknownITimer596 IntervalTimer ?

0000025C m_lastNavArea   dd ?                    ; offset

00000260 m_NavAreaUpdateMonitor CAI_MoveMonitor ?

00000270 m_registeredNavTeam dd ?

00000274 UnknownCTimer628 CountdownTimer ?

00000280 m_iLastUnknown  dd ?

00000284 CBaseCombatCharacter_data ends

Re: Utilize data structures?

The offsets you've provided aren't absolute; CBaseCombatCharacter is a subclass of other classes with properties.

There is a datamap dump for L4D2 here. m_bPreventWeaponPickup is a named property (at offset 6105); just use GetEntProp(client, Prop_Data, "m_bPreventWeaponPickup") to access it.

For properties that aren't defined as a netprop / dataprop, you'd probably opt for offsets relative to a named property (e.g., to access m_weaponIDToIndex you'd call FindDataMapInfo to get the offset for the named property m_impactEnergyScale, add 0x04, then use GetEntData to read it -- well, you'll probably need to read out the bytes as a string since it's a 38-byte char array).

It sounds like you're using this as reference, which has a comment right above your struct stating the offset is 6092 bytes relative to the CTerrorPlayer entity address.

Re: Utilize data structures?

Hmm so how would I switch between slots?

Thanks for your input as always. You have been a real help.

Re: Utilize data structures?

I'm not sure what "slots" refers to in this context. Weapon slots?

I don't have a deep-level understanding of L4D2 (only played it casually), but if m_bPreventWeaponPickup changes depending on the weapon, you'll have to continue browsing through the assembly for modifications to that offset (6105 being 17D9 in hex).

I believe you can set a watchpoint on the memory address as well in GDB; have never done it myself, though.

Re: Utilize data structures?

Yeah I was referring to weapon slots. Guess I got to stare at the disassembly some more.