GTAMods Wiki - User contributions [en]

Memory Addresses (GTA4)

2019-01-25T21:27:40Z

Zolika1351: /* CWeaponInfo */ Added a better documented class and an address for 1.0.8.0

GTA4 for PC Memory Addresses

==Structures==

A list of [[Wikipedia:Data_structure|Structures]] that occur in GTA IV's memory.

===VECTOR===

<source lang="cpp">struct VECTOR
{
float x; // 0x0 | 0
float y; // 0x4 | 4
float z; // 0x8 | 8
float unk;
};</source>

===CVector===

<source lang="cpp">struct CVector
{
VECTOR bodyHeading; // 0x0 | 0
VECTOR visionHeading; // 0x10 | 16
VECTOR unkVector; // 0x20 | 32
VECTOR position; // 0x30 | 48
};</source>

===CVehicleInfo===
The CVehicleInfo class holds all relevant vehicle parameters, as listed in the [[Handling.dat]] file. In essence the CVehicleInfo class is a representation of the data in the [[Handling.dat]] file.

The array of CVehicleInfo's is located at GTAIV.exe+11E3BF0 (1.0.7.0). (Note: unverified. The location might change between start-ups.). The order of elements in the array is exactly the same as in the [[Handling.dat]] file.

Note: not all parameters have been reversed!

<source lang="cpp">
class CVehicleInfo //Size=0x0110(272)
{
public:
char sIdentifier[16]; //0x0000
float fMass; //0x0010
float centreOfMassX; //0x0020
float centreOfMassY; //0x0024
float centreOfMassZ; //0x0028
__int32 nPercentSubmerged; //0x0030
float m_fDriveInertia; //0x003C
__int16 m_nDriveGears; //0x0040
float m_fDriveForce; //0x0044
float m_fBrakeForce; //0x0074
float m_fTractionCurveMax; //0x008C
float m_fTractionCurveMin; //0x0094
float m_fSuspensionForce; //0x00B4
float m_fSuspensionCompDamp; //0x00B8
float m_fSuspensionReboundDamp; //0x00BC
float m_fSuspensionUpperLimit; //0x00C0
float m_fSuspensionLowerLimit; //0x00C4
float m_fSuspensionRaise; //0x00C8
float m_fCollisionDamageMult; //0x00D4
float m_fWeaponDamageMult; //0x00D8
float m_fDeformationDamageMult; //0x00DC
float m_fEngineDamageMult; //0x00E0
float m_fSeatOffsetDist; //0x00E4
__int32 m_nMonetaryValue; //0x00E8
DWORD mFlags; //0x00EC
}
</source>

===CPed===
<source lang="cpp">
class CPed //Size = 0xE6C(3692) WIP
{
CPhysical _CPhysicalParent //0x0 528 Bytes
bool m_bDead //0x210
bool m_bInjured //0x211
bool m_bFatallyInjured//0x212
...
bool m_bIsDrunk //0x780
}
</source>
===CWeaponInfo===
See [[List_of_Weapons_(GTA4)]] for the arrays referred to in the struct.

Array of CWeaponInfo's can be found at GTAIV.exe+0x1540A20 (1.0.7.0) and GTAIV.exe+0x124A600 (1.0.8.0).
<source lang="cpp">
CWeaponInfo g_weaponInfos[60];
</source>

NOTE: work in progress

<source lang="cpp">class CWeaponInfo // size: 0x110 (1.0.7.0)
{
int weapontype;

int slot;

int firetype;

int damagetype;

int group;

float targetrange;

float weaponrange;

int stattype;

struct {
unsigned int bCanaim : 1;
unsigned int bCanaimwitharm : 1;
unsigned int bCanfreeaim : 1;
unsigned int bFirstperson : 1;
unsigned int bKeepcamerabehind : 1;
unsigned int bGun : 1;
unsigned int bThrown : 1;
unsigned int bHeavy : 1;
unsigned int bSilenced : 1;
unsigned int bMeleeclub : 1;
unsigned int bMeleeblade : 1;
unsigned int bArmourpenetrating : 1;
unsigned int b2handed : 1;
unsigned int bTreatas2handedincover : 1;
unsigned int bAnimreload : 1;
unsigned int bAnimcrouchfire : 1;
unsigned int bCreatevisibleordnance : 1;
unsigned int bExplosionbasedonimpact : 1;
unsigned int bAddsmokeonexplosion : 1;
unsigned int bInstantkillinmp : 1;
unsigned int bHigherbreakforce : 1;
unsigned int bCanbeusedasdriveby : 1;
unsigned int bHeavyweaponusesrifleanims : 1;
unsigned int bMissioncanforcedrivebyuse : 1;
unsigned int bDontrumblewhendoingdriveby : 1;
} weaponflags;

int modelhash; // 0x24

int animation; // 0x28
float firerate; // 0x2C
float blindfirerate; // 0x30
float accuracy; // 0x34
float accuracyfps; // 0x38
int unk2_0; // 0x3C
float offset_x; // 0x40
float offset_y; // 0x44
float offset_z; // 0x48
int unk3_0; // 0x4C
float crouchoffset_x; // 0x50
float crouchoffset_y; // 0x54
float crouchoffset_z; // 0x58
int unk4_0; // 0x5C
int unk5_0; // 0x60
float reticule_standing; // 0x64
float reticule_ducked; // 0x68
float reticule_scale; // 0x6C
int rumble_duration; // 0x70
float rumble_intensity; // 0x74
int pickupregentime; // 0x78
int unk7_FFFFFFFF; // 0x7C
short pickupammoonstreet; // 0x80
short damage; // 0x82
short damagefps; // 0x84
short clipsize; // 0x86
int maxammo; // 0x88
int timebetweenshots; // 0x8C
float physicsforce; // 0x90
int reloadtime_normal; // 0x94
int reloadtime_fast; // 0x98
int reloadtime_crouch; // 0x9C
int projectiletype; // 0xA0
int projectilefusetime; // 0xA4
int projectiletocreate; // 0xA8
int projectilexplosiontype; // 0xAC
float projectileoffsetx; // 0xB0
float projectileoffsety; // 0xB4
float projectileoffsetz; // 0xB8
int unk13_0; // 0xBC
float projectilerotoffsetx; // 0xC0
float projectilerotoffsety; // 0xC4
float projectilerotoffsetz; // 0xC8
int unk17_0; // 0xCC
float projectilephysicsexplodeimpactthreshold; // 0xD0
float projectilephysicsexplodeimpactwithvehiclethreshold; // 0xD4
float projectilephysicsvehiclevelocity; // 0xD8
int meleeanim; // 0xDC
int unk19_FFFFFFFF; // 0xE0
int muzzlefx; // 0xE4
int shellfx; // 0xE8
int projectiletrailfx; // 0xEC
float networkplayermod; // 0xF0
float networkpedmod; // 0xF4
float aimingaccuracytime; // 0xF8
int aimingpellets; // 0xFC
int shotsfired; // 0x100
int unk21_0; // 0x104
int unk22_0; // 0x108
int unk23_0; // 0x10C
};</source>

==Classes==

A list of [[Wikipedia:Class_(computer_science)|Classes]] that occur in GTA IV's memory.

===scrThread===

<source lang="cpp">class scrThread
{
public:
virtual ~scrThread();
virtual int reset(int i1,int i2,int i3);
virtual int run(int i1);
virtual int loop(int i1);
virtual int closeDown();

DWORD threadId;
DWORD scriptHash;
DWORD state;
DWORD IP;
DWORD currentFrame;
DWORD SP;
DWORD timerA;
DWORD timerB;
DWORD timerC;
float waitTime;
BYTE zPadding1[28];
DWORD exIP;
DWORD exFrameSP;
BYTE zPadding2[4];
void* stack;
BYTE zPadding3[4];
void* XLiveBuffer;
BYTE zPadding4[8];
char* exitMessage;
char programName[54];
BYTE zPadding5[14];
bool saveScript;
bool playerControlOnInMissionCleanup;
bool clearHelpInMissionCleanup;
BYTE zPadding6[1];
bool allowNonMinigameTextMessages;
BYTE zPadding7[1];
bool errorInScript;
bool canBePaused;
BYTE zPadding8[3];
bool canRemoveBlipsCreatedByAnyScript;
BYTE zPadding9[7];
DWORD flags;
};</source>

==Functions==

A list of [[Wikipedia:Function_(computer_science)|Functions]] that occur in GTA IV's memory.

<source lang="cpp">/* 0x4581C0 */ unsigned int __cdecl CRC32(char* text,unsigned int mask); // 1.0.2.0</source>

==Variables==

A list of [[Wikipedia:Variables#Computer_programming|Variables]] that occur in GTA IV's memory.

<source lang="cpp">/* 0xF56BC4 */ BYTE AESEncryptionKey[32]; // 1.0.2.0
/* 0x15AD8B4 */ DWORD* globalVariablesPool; // 1.0.2.0</source>

{{stub}}

==External Links==
* {{GTAF|378631|Documenting GTAIV memory addresses}}
* {{GTAF|393804|IV Limits}}

[[Category:Memory Addresses]][[Category:GTA 4]]

APPLY FORCE TO CAR

2018-01-08T20:03:33Z

Zolika1351: Edited the parameters from force & angle to force amount & force position

{{Native
|np=12
|p1t=integer
|p1d=Car Id
|p2t=bool
|p2d=Unknown, suggested: true
|p3t=float
|p3d=X Force Amount
|p4t=float
|p4d=Y Force Amount
|p5t=float
|p5d=Z Force Amount
|p6t=float
|p6d=X Force Position
|p7t=float
|p7d=Y Force Position
|p8t=float
|p8d=Z Force Position
|p9t=bool
|p9d=Unknown, suggested: true
|p10t=bool
|p10d=IsForceDirectionRelative
|p11t=bool
|p11d=Unknown, suggested: true
|p12t=bool
|p12d=Unknown, suggested: true
|r=0
}}

Applies force to a car.

P10 IsForceDirectionRelative specifies if the force direction is relative to direction object is facing (true), or static world direction (false).

ALLOW THIS SCRIPT TO BE PAUSED

2017-12-11T15:07:32Z

Zolika1351:

{{Native
|np=1
|p1t=bool
|p1d=Allows or disallows this script to be paused
|r=0
}}

Allows or disallows the script this native is executed in to be paused.

For example, when entering the Custom Match menu, every pausable script gets paused.

DISABLE DEBUG CAM AND PLAYER WARPING

2017-12-07T17:16:52Z

Zolika1351:

{{Native
|game = 4
|noheader = 0
|np = 1
|p1t = boolean
|p1d = disable
|r = 0
}}

Not sure about the boolean part, but it disables the effect of ENABLE_DEBUG_CAM(true); meaning disables the debug cam and double-click player teleporting.

ENABLE DEBUG CAM

2017-12-06T19:31:05Z

Zolika1351:

{{Native
|game = 4
|noheader = 0
|np = 1
|p1t = boolean
|p1d = enable
|r = 0
}}

Setting it to true will enable a hidden debug camera that can be controlled with mouse.
Controls:

Drag mouse to rotate

Scrollwheel to zoom

Double left click to teleport player

ENABLE DEBUG CAM

2017-12-06T19:30:45Z

Zolika1351:

{{Native
|game = 4
|noheader = 0
|np = 1
|p1t = boolean
|p1d = enable
|r = 0
}}

Setting it to true will enable a hidden debug camera that can be controlled with mouse.
Controls:
Drag mouse to rotate
Scrollwheel to zoom
Double left click to teleport player

IS DEBUG CAMERA ON

2017-12-06T19:26:33Z

Zolika1351:

{{Native
|np=0
|r=1
|rt=bool
|rd=true or false
}}

Returns true if ENABLE_DEBUG_CAM(true); was used.

IS DEBUG CAMERA ON

2017-12-06T19:26:03Z

Zolika1351:

{{Native
|np=0
}}

Returns true if ENABLE_DEBUG_CAM(true); was used.

IS DEBUG CAMERA ON

2017-12-06T19:25:44Z

Zolika1351: Created page with "{{Native |np=0 }} Returns true if ENABLE_DEBUG_CAM(true); was used before."

{{Native
|np=0
}}

Returns true if ENABLE_DEBUG_CAM(true); was used before.

GET NUMBER OF CHAR TEXTURE VARIATIONS

2017-10-14T13:58:23Z

Zolika1351:

{{Native
|np=3
|p1t=integer
|p1d=Ped
|p2t=integer
|p2d=Component id
|p3t=integer
|p3d=Variaton
}}

Gets all available texture variations in current component (parameter 2) and for current [[GET_CHAR_DRAWABLE_VARIATION|drawable variation]] (parameter 3).

Example usage:

int CurrentHead = GET_CHAR_DRAWABLE_VARIATION(GetPlayerPed(), 0); 
int MaxHeadTex = GET_NUMBER_OF_CHAR_TEXTURE_VARIATIONS(GetPlayerPed(), 0, CurrentHead);

GET NUMBER OF CHAR TEXTURE VARIATIONS

2017-10-14T13:58:05Z

Zolika1351:

{{Native
|np=3
|p1t=integer
|p1d=Ped
|p2t=integer
|p2d=Component id
|p3t=integer
|p3d=Variaton
}}

Gets all available texture variations in current component (parameter 2) and for current [[GET_CHAR_DRAWABLE_VARIATION|drawable variation]] (parameter 3).

Example usage:

int CurrentHead = GET_CHAR_DRAWABLE_VARIATION(GetPlayerPed(), 0);
int MaxHeadTex = GET_NUMBER_OF_CHAR_TEXTURE_VARIATIONS(GetPlayerPed(), 0, CurrentHead);

GET NUMBER OF CHAR TEXTURE VARIATIONS

2017-10-14T13:56:54Z

Zolika1351:

{{Native
|np=3
|p1t=integer
|p1d=Ped
|p2t=integer
|p2d=Component id
|p3t=integer
|p3d=Variaton
}}

Gets all available texture variations in current component (parameter 2) and for current [[GET_CHAR_DRAWABLE_VARIATION|drawable variation]] (parameter 3).

Example usage:

int MaxHeadTex = GetNumberOfCharTextureVariations(GetPlayerPed(), PED_COMPONENT_HEAD, Head);

GET NUMBER OF CHAR TEXTURE VARIATIONS

2017-10-14T13:55:18Z

Zolika1351:

GET NUMBER OF CHAR DRAWABLE VARIATIONS

2017-10-14T13:55:00Z

Zolika1351:

{{Native
|np=2
|p1t=integer
|p1d=Ped
|p2t=integer
|p2d=Component
}}

Get the number of available drawable variations on component (parameter 2). 

----

Components (parameter 2): 
*Head = 0,
*Upper Body = 1,
*Lower Body = 2,
*Bags = 3,
*Hand = 4,
*Feet = 5,
*Jacket = 6,
*Hair = 7,
*Unknown Body Part = 8,
*Teeth = 9,
*Face = 10

GET NUMBER OF CHAR DRAWABLE VARIATIONS

2017-10-14T13:54:49Z

Zolika1351:

{{Native
|np=2
|p1t=integer
|p1d=Ped
|p2t=integer
|p2d=Component
}}

Get the number available drawable variations on component (parameter 2). 

----

Components (parameter 2): 
*Head = 0,
*Upper Body = 1,
*Lower Body = 2,
*Bags = 3,
*Hand = 4,
*Feet = 5,
*Jacket = 6,
*Hair = 7,
*Unknown Body Part = 8,
*Teeth = 9,
*Face = 10

GET NUMBER OF CHAR DRAWABLE VARIATIONS

2017-10-14T13:54:24Z

Zolika1351: Native had wrong params listed, fixed.

{{Native
|np=2
|p1t=integer
|p1d=Ped
|p2t=integer
|p2d=Component
}}

Get all available drawable variations on component (parameter 2). 

----

Components (parameter 2): 
*Head = 0,
*Upper Body = 1,
*Lower Body = 2,
*Bags = 3,
*Hand = 4,
*Feet = 5,
*Jacket = 6,
*Hair = 7,
*Unknown Body Part = 8,
*Teeth = 9,
*Face = 10

SET OBJECT ALPHA

2017-10-13T15:37:22Z

Zolika1351: Created page with "{{Native |np=2 |p1t=pointer |p1d=object handle |p2t=int |p2d=alpha (0-255) |r=0 }} Sets object's alpha. 0 is fully invisible, 255 is fully visible."

{{Native
|np=2
|p1t=pointer
|p1d=object handle
|p2t=int
|p2d=alpha (0-255)
|r=0
}}

Sets object's alpha. 0 is fully invisible, 255 is fully visible.

MARK CHAR AS NO LONGER NEEDED

2017-10-06T16:01:51Z

Zolika1351: Created page with "{{Native |np=1 |p1t=Integer |p1d=Char Handle }} The game will delete the char when appropiate (i.e. no player is in proximity) and basically makes them just like any other no..."

{{Native
|np=1
|p1t=Integer
|p1d=Char Handle
}}

The game will delete the char when appropiate (i.e. no player is in proximity) and basically makes them just like any other normal pedestrian, if the char was in a car it will drive off, if not then start walking on the nearest path.

SET CHAR PROP INDEX

2017-09-29T14:52:26Z

Zolika1351:

{{Native
|np=3
|p1t=Handle
|p1d=Ped Handle
|p2t=int
|p2d=Prop type (hat or glasses)
|p3t=int
|p3d=Prop index
}}

Sets a ped's prop (hats, glasses, etc) variation, similar to component variations.

Example: 

u32 Prop1; 
u32 Prop2; 
GET_CHAR_PROP_INDEX(Ped1, 0, &Prop1); 
CLEAR_CHAR_PROP(GetPlayerPed(), 0); 
SET_CHAR_PROP_INDEX(GetPlayerPed(), 0, Prop2); 
GET_CHAR_PROP_INDEX(Ped1, 1, &Prop2); 
CLEAR_CHAR_PROP(GetPlayerPed(), 1); 
SET_CHAR_PROP_INDEX(GetPlayerPed(), 1, Prop2);

GET CHAR PROP INDEX

2017-09-29T13:14:43Z

Zolika1351:

{{Native
|game = 4
|noheader = 0
|np = 3
|p1t = handle
|p1d = ped handle
|p2t = boolean
|p2d = hats or glasses
|p3t = unsigned integer
|p3d = variable to store prop index
|r = 0
}}

SET CHAR PROP INDEX

2017-09-29T13:08:06Z

Zolika1351:

{{Native
|np=3
|p1t=Handle
|p1d=Ped Handle
|p2t=int
|p2d=Prop type (hat or glasses)
|p3t=int
|p3d=Prop index
}}

The results of this function are either unknown or untested.

SET CHAR PROP INDEX

2017-09-29T13:07:52Z

Zolika1351:

{{Native
|np=3
|p1t=Handle
|p1d=Ped Handle
|p2t=int
|p2d=Prop type (hat or glasses)
|p3t=int
|p3d=New index ?
}}

The results of this function are either unknown or untested.

GET EPISODE NAME

2017-09-28T17:29:46Z

Zolika1351: Created page with "{{Native |game = 4 |noheader = 0 |np = 0 |r = 1 |rt = string |rd = episode name }} Returns "BLANK_EPISODE_NAME" in IV, untested in EFLC."

{{Native
|game = 4
|noheader = 0
|np = 0
|r = 1
|rt = string
|rd = episode name
}}

Returns "BLANK_EPISODE_NAME" in IV, untested in EFLC.

GET CHAR TEXTURE VARIATION

2017-09-28T17:25:19Z

Zolika1351: Created page with "{{Native |np = 2 |p1t = integer |p1d = Char handle |p2t = integer |p2d = Char component handle |r=1 |rt=int |rd=Returns the handle for the texture va..."

{{Native
|np = 2
|p1t = integer
|p1d = Char handle
|p2t = integer
|p2d = Char component handle
|r=1
|rt=int
|rd=Returns the handle for the texture variation of the specified char component.
}}

Component handle:
*Head = 0,
*Upper Body = 1,
*Lower Body = 2,
*Bags = 3,
*Hand = 4,
*Feet = 5,
*Jacket = 6,
*Hair = 7,
*Suse2 = 8,
*Teeth = 9,
*Face = 10

GET HOST ID

2017-09-28T17:24:12Z

Zolika1351:

{{Native
|game = 4
|noheader = 0
|np = 0
|r = 1
|rt = integer
|rd = host ID
}}

Returns the host's ID in a multiplayer lobby.

GET HOST ID

2017-09-28T17:23:39Z

Zolika1351:

{{Native
|game = 4
|noheader = 0
|np = 0
|r = 1
|rt = integer
|rd = host playerindex
}}

Gets the host's playerindex in a multiplayer lobby.

GET HOST ID

2017-09-28T17:23:13Z

Zolika1351: Created page with "{{Native |game = 4 |noheader = 0 |np = 0 |r = 1 |rt = boolean |rd = host playerindex }} Gets the host's playerindex in a multiplayer lobby."

{{Native
|game = 4
|noheader = 0
|np = 0
|r = 1
|rt = boolean
|rd = host playerindex
}}

Gets the host's playerindex in a multiplayer lobby.