Game.dtz

GAME.DTZ (DaTa Zlib) is a file regarding PS2 and PSP versions of GTA LCS and GTA VCS. It contains data files, as well as main textures and models analogue to existing 3D era games compiled in binary form. It is compressed using the zlib/deflate algorithm [1] (max compression). Its contents can be viewed using any zlib compression/decompression utility, such as offzip [2] and zdrop though some can be viewed with DTZ Editor [3], a tool made by Dageron.

GAME.DTZ

Description	Analogy	Offset	Notes
Textures
textures of menu	frontend.txd	LCS PS2: 0x4E4A30 LCS PSP: 0x4DA830 VCS PS2: 0x581330 VCS PSP: 0x51D95C	contain texture of menu, packed deflate/zlib algorithm (*)
texture of fonts	fonts.txd	LCS PS2: 0x4EF4D8 LCS PSP: 0x4E2B1C VCS PS2: 0x57BE4C VCS PSP: 0x530AFC	also packed deflate/zlib algorithm (*)
particle effects	particle.txd	LCS PS2: 0x4A1C28 LCS PSP: 0x38AB90 VCS PS2: 0x761F0 VCS PSP: 0x3F7FB0	contain all textures of particle effect (*)
generic-textures	generic.txd, wheels.txd, vehicle.txd	LCS PS2: 0x4A1BFC LCS PSP: 0x392B04 VCS PS2: 0x539E0 VCS PSP: 0x3D60B4	contains general textures for cars and all the textures of wheels (*)
radar icons	hud.txd	LCS PS2: 0x4A1BE4 LCS PSP: 0x38AD30 VCS PS2: 0x287B0 VCS PSP: 0x3B4678	contain icons for hud (*)
texture of radar	radarNN.txd		Contain textures for radar
Animation
?	ped.ifp
?	swim.ifp		only in GTA VCS
?	fight.ifp		only in GTA VCS
?	driveby.ifp		only in GTA VCS
DIR-files
for cuts.img	cuts.dir		not working
for GTA3PS2.IMG	GTA3PS2.dir		specific for stories, doesn't contain the names.
Collision
?	peds.col		peds.col2
?	vehicles.col		vehicles.col2
?	weapons.col		weapons.col2
Models
model of plane	air_vlo.dff		air_vlo.mdl
model of arrow	arrow.dff		arrow.mdl
model of wheels	wheels.dff
model of marker (zone)	zonecylb.dff
IDE / IPL / DAT
IDE	*.ide		contain all name of models and textures.
IPL	*.ipl		contains all the coordinates for the placement of collisions in the game.
colors of cars	carcols.dat
cullzone data	cullzone.dat
fistfite data	fistfite.dat
handling data	handling.dat	LCS PS2: 0x1647A0 LCS PSP: 0x50190 VCS PS2: 0x4C2A10 VCS PSP: 0x3AF30F	LCS and VCS have different structure of handling
	info.zon
	map.zon
object data	object.dat
particle data	particle.cfg	LCS PS2: 0x3917D0	characteristics of special effects
pedstats data	pedstats.dat	LCS PS2: part 1 - 0x49E820 part 2 - 0x49EB78 part 3 - 0x4A1A10 LCS PSP: 0x391DA0 VCS PS2: part 1 - 0x4C8080 part 2 - 0x4C8428 VCS PSP: 0x3B1F10	characteristics of pedestrians, in the PS2-version split into parts LCS PS2: part 1 - 15 items part 2 - 18 items part 3 - 9 items LCS PSP: 42 items VCS PS2: part 1 - 6 items part 2 - 36 items VCS PSP: 42 items
timecyc data	timecyc.dat
data about waters surfaces	waterpro.dat
weapon data	weapon.dat	VCS PS2: 0x3D7530 VCS PSP: 0x2E8B60
Other
SDT-files.			only in PSP versions

Notes:

• Offset is specified for the unpacked game.dtz
• * - Data marked with (*) are opened by GTA Stories Texture Explorer.

weapons data

Analog of weapons.dat

Structure of LCS version

Total number of records: 38

typedef struct vFireOffset{
    float       x;
    float       y;  
    float       z;        
};

typedef struct vTimeStrc{
    float       a;
    float       b;  
    float       c;        
};

typedef struct weapondata{
    int		FireType;
    float	Range;
    int		FiringRate;
    int		Reload;
    int		AmountOfAmmunition;
    int		Damage;
    float	Speed;
    float	Radius;
    float	LifeSpan;
    float	Spread;
    DWORD	padding1;
    DWORD	padding2;
    vFireOffset	FireOffset;
    DWORD	zero;
    DWORD	anim_id;
    vTimeStrc	time1;
    vTimeStrc	time2;
    float	unk;
    DWORD	ModelID;
    DWORD	ModelID2;
    DWORD	weapon_slot;
    DWORD	Flags <format=hex>;
};

Structure of VCS version

Total number of records: 40

typedef struct vFireOffset{
    float       f1;
    float       f2;  
    float       f3;        
};

typedef struct weapondata{
    DWORD       dwType; 
    int         iFireType;
    float       fRange;
    int         iFiringRate;
    int         iReload;
    int         iAmountOfAmmunition;
    int         iDamage;
    float       fSpeed;
    float       fRadius;
    float       fLifeSpan;
    float       fSpread;
    DWORD       dwPadding;   //padding (0xAA)
    vFireOffset m_vFireOffset;  //vector
    DWORD       _f3C;   //always zero
    DWORD       _f40;   //integer value
    DWORD       _f44;   //DWORD ? unknown
    vFireOffset m_vFireOffset;  //vector
    vFireOffset m_vFireOffset;  //vector
    DWORD       dwModelID; 
    DWORD       dwModel2ID;
    DWORD       dwWeaponSlot
    DWORD       _f6C;   //padding (0xAA)      
};