[Deji]

Walk modes... they're odd..

CODE

0 Turn on the spot..?
1 Turn to and stay still?
2 Turn to and stay still?
3 Turn to and stay still? (faster?)
4 Walk
5 Turn to and stay still?
6 Run
7 Sprint
8 Turn to and stay still?

I'm trying to find differences between 05D3 and 05F5.

SANNY

if
    0736:   is_keyboard_key_just_pressed 0x32
then
    009A: 1@ = create_actor_pedtype 4 model #MALE01 at 1528.4556 -1662.6246 -100.0
    009A: 2@ = create_actor_pedtype 4 model #MALE01 at 1533.4556 -1662.6246 -100.0
    0173: set_actor 1@ Z_angle_to 180.0
    0173: set_actor 2@ Z_angle_to 180.0
    05D3: AS_actor 1@ goto_point 1528.4556 -1642.6246 13.3828 mode 23 time 7000 ms
    05F5: AS_actor 2@ goto_point 1533.4556 -1642.6246 13.3828 mode 23 time 7000 ms
end

In the IDB, it's only clear that different tasks are set to the actor.


Interestingly, the time value is converted thusly..
-1 > 50000
-2 > -1


Pre-Post Edit

Alright, did a lot of work and figured out that 05D3 refers to this task: TASK_COMPLEX_FOLLOW_NODE_ROUTE

While 05F5 is: TASK_COMPLEX_GO_TO_POINT_AND_STAND_STILL


... big difference.

[fastman92]

038F: load_texture "DOWN" as 1 // Load dictionary with 0390 first
It should be noted that number of texture is in range 1-128. One day i didn`t know why my CLEO script is crashing and finally found an error caused by loading texture to 0 number.

[Adler]

Hey I found this quote from the Opcodes thread in GTAF:

05A5: is_area_center @489(@228,10f) @499(@228,10f) scale 12.0 12.0 overlaping_area_center @573(@227,10f) @583(@227,10f) scale @613 @613
found by demarest concerns more like screen.

i found only conditional usage of 05B0, and it seems to be that last 5th pair of 2D coords is checked if it fits to unknown relation from first 4 pairs of parameters- also 2D coords. or i can say that is a pretty damn time consuming opcode and after all it can be pooltable-only related.

i can suggest:

CODE

05A4=5,get_angle_between_vectors_origin_to %1d% %2d% and_origin_to %3d% %4d% store_to %5d%

there is a special word in english for angles <180 degrees but i do not know it yet and it would be quite important to insert that word into this description. [ Bolded for emphasis ]

I would like clarification on this opcode's specific function since I'm planning on using this for a mod (otherwise I'll have to calculate the angle myself). Thanks.

[Deji]

CODE

0364:   actor 102@(42@,9i) spotted_actor $PLAYER_ACTOR

May be changed to

CODE

0364:   actor 102@(42@,9i) has_actor_in_line_of_sight $PLAYER_ACTOR

In this example, the opcode returns true if the player is in the other actors line of sight. He could even be behind the other actor and it would still return true. Only having another object between them seems to make this return false.

[Deji]

SANNY

0560: create_random_actor_in_car 148@ handle_as 149@
0561: 51@(129@,5i) = create_passenger_in_car 46@(129@,5i) seat 0

These seem to choose the character model depending on what model the vehicle is. So not as random as you could be lead to believe.

[Deji]

SANNY

074D: AS_actor -1 turns_to_and_look_at_actor 37@ timelimit -2

Maybe.. if the actor has no weapon. But when I tried to use it, Colt 45 in my actors hand, he violently shot a fellow officer. Yes, I'm actually working on Vigilante Justice.

SANNY

074D: AS_actor -1 shoot_at_actor 37@ timelimit -2

Seemed that he would shoot even while the victim was already dead (violent world, eh?). I did wonder why there was a need for a time limit on this opcode.

[jayd00]

please, can someone explain me what does this opcode:

SANNY

070B: set_actor 164@ onbone_attached_object_operation 0

thnks...

[Deji]

Just some opcode finds. Nothing special. Yawn.

095D

SANNY

095D:   unknown_actor_check $1874(6@,3i)

>>

SANNY

095D:   actor $1874(6@,3i) stuck_under_car

093B

SANNY

093B: unknown_actor $ACTOR_SMOKE flag 1

>>

SANNY

093B: set_actor $ACTOR_SMOKE upper_body_damage_anims_only 1

0961

SANNY

0961: unknown_actor 431@(252@,11i) flag 1

>>

SANNY

0961: set_actor 431@(252@,11i) keep_tasks_after_cleanup 1

This may proove a powerful opcode.

0982

SANNY

0982: unknown_actor 102@ flag 1

>>

SANNY

0982: set_actor 102@ stay_in_car_when_dead 1

Stops the ped from falling out of the car when killed. Most notably used in the mission Pier 69 where you drive some rich guy off the Pier and the poor guy drowns. Notice how he doesn't leave the car when he does? Wow. Amazing. Yeah...

099F

SANNY

099F: unknown_actor -1 flag 1

>>

SANNY

099F: AS_actor -1 ignore_weapon_range 1

09A7

SANNY

09A7: unknown_actor 11@ flag 1

>>

SANNY

09A7: set_actor 11@ drugged_up 1

09B5

SANNY

09B5: unknown_actor $ACTOR_RYDER flag 0

>>

SANNY

09B5: set_actor $ACTOR_RYDER signal_after_kill 0

To stop them from being cocky after their kills.

09B6

SANNY

09B6: unknown_actor 0@ flag 0

>>

SANNY

09B6: set_actor 0@ wanted_by_police 0

09F4

SANNY

09F4: unknown_actor $ACTOR_OG_LOC flag 1

>>

SANNY

09F4: set_actor $ACTOR_OG_LOC ignore_height_difference_following_nodes

0A27

SANNY

0A27: unknown_actor 44@ flag 1

>>

SANNY

0A27: set_actor 44@ death_pickups_persist 1

So you're designing a mission and the goal is to retrieve the parachute that an character is wearing. The character must die and the parachute is created when that happens. But oh no, the parachute dissapears after such a short time. Mission failed? Nah, Rockstar created this nifty little opcode to make them linger, for the mission "Stowaway".

087F

SANNY

087F: unknown_actor 39@ flag 1

>>

SANNY

087F: set_actor 39@ dont_leave_group 1

Don't be a busta, stick with the homies!

0856

SANNY

0856: unknown_actor 98@ driving_flag 0

WUT? >>

SANNY

0856: set_actor 98@ allowed_to_duck 0

Allows/forbids the actor from ducking/crouching.


Now... to be really finicky and exact about some opcodes... Don't worry, I'll make it dramatic so there's a little more than no reason to read it.

02E0

WRONG

SANNY

02E0:   actor $PLAYER_ACTOR aggressive

RIGHT

SANNY

02E0:   actor $PLAYER_ACTOR firing_weapon

09F6

WRONG

SANNY

09F6: set_actor $ACTOR_RYDER unjackable_through_driver_seat 0

RIGHT

SANNY

09F6: set_actor $ACTOR_RYDER get_out_of_upside_down_car 0

This is set on most of the characters who are doomed to be in the players car. When the car is upside down, without this flag, they would leave immediately. However since there is the ability to recover from such an event, this is used to make them stay put, until the car is on fire at least.

08C6

SANNY

08C6: set_actor 65@ stay_on_bike 1

Sets two flags. One to disallow the actor to leave the vehicle (the particular flag works on other vehicles too) and one to prevent the actor from falling off the bike.

00A0

SANNY

00A0: store_actor $PLAYER_ACTOR position_to $TEMPVAR_FLOAT_1 $TEMPVAR_FLOAT_2 $TEMPVAR_FLOAT_3

It just should be mentioned SOMEWHERE that if the actor in question is in a vehicle, this opcode returns the vehicle coordinates instead. So don't bother wasting time checking if the actor is in a vehicle, then using a different opcode to get the vehicle coords...

00A3

See above about the whole vehicle thing and such...

00D9

To set the record straight: This should be used during a mission. This opcode adds a reference to any found car, etc. HOWEVER if this opcode is used when the actor isn't in a car, the handle of the last found vehicle will be returned. It sets any car the actor is in as the one and only "mission vehicle" and returns that whenever you call it, unless the actor is in a new vehicle the next time it is called.

087E

WRONG

SANNY

087E: set_actor 35@ weapon_droppable 0

RIGHT

SANNY

087E: set_actor 35@ dont_drop_weapons_when_dead 0

0446

OKAY

SANNY

0446: set_actor 2@ dismemberment_possible 0

BETTER

SANNY

0446: set_actor 2@ suffers_critical_hits 0

07CB

WRONG?

SANNY

07CB: set_actor $ACTOR_RYDER supporting_fire 0

RIGHT?

SANNY

07CB: set_actor $ACTOR_RYDER dont_listen_to_player_group_commands 0

039E

WRONG?

SANNY

039E: set_actor 65@ locked 1 while_in_car

RIGHT?

SANNY

039E: set_actor 65@ cant_be_dragged_out_of_car 1

Should basically mean that no peds will attempt to jack this character.

054A

VERY WRONG

SANNY

054A: set_actor $ACTOR_SWEET immune_to_car_headshots 0

VERY RIGHT

SANNY

054A: set_actor $ACTOR_SWEET can_be_shot_in_a_car 0

0526

VAGUE

SANNY

0526: set_actor 65@ stay_in_car 1

UHH.. NOT VAGUE?

SANNY

0526: set_actor 65@ stay_in_car_when_jacked 1

I've not actually tested most of these so believe what you want to. Course I'm always right on this website

[Deji]

SANNY

0169: set_fade_color_RGB 2 2 2
fade 0 500

Yeh wouldn't think this would be a risky 2 lines of code but it is.

If all params of the CCamera::SetFadeColor function are 2, a byte is set in the camera struct that specify's that the script wants to fade into a splash screen.

It causes no crashes or real freezes. The gameplay will be frozen (that weird blurry screen thing you get with most camera bugs), however pausing still works (when you unpause, a shadow of the menu remains).

[Deji]

New Opcode

SANNY

085B: unknown_actor -1 flag 1

>>

SANNY

085B: AS_actor -1 set_kinda_stay_in_same_place 1

[Adler]

Kinda?

[Deji]

Original Rockstar name (one of the GTA IV natives).

[Deji]

New Opcode

SANNY

09A6: unknown_radar_flag 1

>>

SANNY

09A6: enable_interior_radar_blips 1

Y'know.. they're usually disabled.

[Deji]

0ABD probably returns true if the car alarm is on, too... which was probably not even known by the creator

[Deji]

New Opcode!

09D7

CODE

09D7: unknown_player $PLAYER_CHAR flag 1

>>

CODE

09D7: set_player $PLAYER_CHAR force_interior_lighting 1

Will be updated with GTAG v2.

[Deji]

GTAG's been down for a while. In that time I'm sure to have found and corrected a lot of opcodes...

Opcode Finds

06F3

SANNY

06F3: set_players_can_target_eachother 0

Sets whether players can target lock each other during 2 player missions.

09D2

SANNY

09D2: set_cops_chase_criminals 0

This opcode can disable cops from randomly chasing criminals and such. It's a way to disable a bit of the mayhem that goes on in SA.

06FA

SANNY

06FA: allow_players_to_use_separate_vehicles 0

When set, each player can use a separate vehicle during 2 player missions.

0969

SANNY

0969:   car $CARMOD_CAR is_big

Returns true if the vehicle is 'big'... as set by the vehicle data flags.

0433

SANNY

0433: set_actor 50@ criminal_flag 1

Is this character a criminal? (This flag isn't set for CJ!!!)

09BC

SANNY

09BC: put_actor $PLAYER_ACTOR at $X_BUY_MARKER $Y_BUY_MARKER $Z_BUY_MARKER no_offset_and_dont_warp_gang

Warps the specified character to the specified position without adding the characters height to the Z coordinate and without warping the rest of the characters group.

08C7

SANNY

08C7: put_actor $PLAYER_ACTOR at 2469.7 -1657.0 12.3 dont_warp_gang

Warps the specified character to the specified position without warping the rest of the players group.

05A0

SANNY

05A0:   is_unused_camera_world_viewer_being_used

Probably used to be a debug camera mode. I qoute GXT entry 'OP1'... "You must be in debug camera mode to active the object placer".

0A15

SANNY

0A15:   is_car_affected_by_cheats 34@

Returns true if the car is affected by cheats (seemingly only the handling cheat).

0A21

SANNY

0A21: set_car 72@ not_affected_by_cheats 0

Sets whether the car is affected by cheats (seemingly only the handling cheat).

081D

SANNY

081D: set_car $10934 engine_operation 1

>>

SANNY

081D: set_car $10934 engine_broken 1

Sets whether the cars engine is broken. If it is broken, it cannot be turned on by characters who enter it. This also occurs when the car gets submerged in water, so the engine can be repaired after that using this opcode. 0918 was right, though... but I believe I may have found that one

08AD

SANNY

08AD: put_actor $PLAYER_ACTOR at -2240.854 129.3346 radius 1.5 // interior version

>>

SANNY

08AD: link_actor $PLAYER_ACTOR to_enex_marker_at -2240.854 129.3346 radius 1.5

Locates the entry/exit marker in the specified radius of the specified coordinates and links it to the character, also setting the appropriate interior ID for the character and setting the appropriate sky colour if the character is player controlled. If you ever tried to teleport the player into an interior without using this opcode and then found that upon exiting the interior, you teleport to a place different to where you expected, you'll understand why this opcode is necessary.

09B4

SANNY

09B4: set_object_property_at 345.5621 306.2212 radius 10.0 bitmask 16384 bought 0

>>

SANNY

09B4: set_object_property_at 345.5621 306.2212 radius 10.0 bitmask 16384 flag 0

This opcode is like 098E, except it finds the appropriate enex marker via it's position instead of it's name.

09B4

SANNY

09B4: set_object_property_at 345.5621 306.2212 radius 10.0 bitmask 16384 bought 0

>>

SANNY

09B4: set_object_property_at 345.5621 306.2212 radius 10.0 bitmask 16384 flag 0

This opcode is like 098E, except it finds the appropriate enex marker via it's position instead of it's name.

098E

SANNY

098E: unknown_set_interior 'FDPIZA' bitmask 512 flag 1 // Pizza Stack

>>

SANNY

098E: set_interior 'FDPIZA' bitmask 512 flag 1 // Pizza Stack

No reason for this to be an unknown. But the bitmask param needs documenting. I'll start...

0x1000 - Is Burglary House
0x4000 - Is Active

039C

SANNY

039C: set_car 379@(253@,16i) watertight 1

Makes the vehicle watertight, meaning characters inside will not be harmed if the vehicle is submerged in water. Has no affect if the player is the driver.

I'm glad to find this, cause I somehow knew it had to exist.

068C

SANNY

068C:   is_player_autoaiming $PLAYER_CHAR

Returns true if the player is auto-aiming on something.

0947

SANNY

0947: actor $PLAYER_ACTOR speak_from_audio_table 353 store_spoken_phrase_id_to $2563

Similar to 05C1, but returns which phrase was spoken and is not run as a task.

07BF

SANNY

07BF: set_marker 443@($7257,8i) tracking_blip 1

Sets the marker as a tracking blip. Don't ask me what that means

0859

SANNY

0859: AS_actor 0@ walk_alongisde_actor $PLAYER_ACTOR

Makes the character walk alongside the specified character. Yeah, this one's a task.

0940

SANNY

0940: set_group 260@ enters_leaders_vehicle 1

If set to 0, the group members will not enter a car when the leader does.

0634

SANNY

0634: AS_actor 67@ attack_using_weapon_actor 50@ flags 4 perform_actions_after_time 2000 chance_of_action 100

Confirmation needed on params... Here's what I've got on the flags...

Bit 1 - Unknown (char seems smarter while using this?)
Bit 2 - Allow Movement?
Bit 3 - Allow Crouching


Now the rest of this stuff is still partially unknown, but not as unknown as before...

0742

SANNY

0742: set_plane 35@(328@,10i) unknown_trajectory -0.8

Or not...

07B1

SANNY

07B1: unknown_get_dance_track_data -1 store_to 20@ 21@ 22@

GET_STREAM_BEAT_INFO?

0876

SANNY

0876: unknown_cube_cornera 2682.42 1420.237 28.0 cornerB -2630.365 1411.699 28.0 flag 3 flag 0

From looking around the EXE, it seems like it can to stop birds from flying in the specified area. But the other flags make me think it may do more than that.

0867

SANNY

0867:   unknown_in_burglary_interior 0

With the flag at 0, returns true when in buglary houses, it seems (it returns true when the result matches the parameter... yeah, it's stupid). Maybe it returns true when there is stealable stuff in the current interior?

084D

SANNY

084D: unknown_flag_house_occupants 0

Probably something to do with interiors, anyway.


That's it for now. According to the GTAG v2 Opcode Database, there are only 49 unknown opcodes left for SA. Cool, eh?

[Deji]

One more, just found now...

0A31

SANNY

0A31: set_player $PLAYER_CHAR group_to_follow_never 1

When set, the specified players group doesn't follow the player, even if the player uses the "group follow" button.
(Native: SET_PLAYER_GROUP_TO_FOLLOW_NEVER)

G'night... or rather, morning, pretty much...

[Deji]

08EC

SANNY

08EC: $TEMPVAR_CAR_TYPE = car $TEMPVAR_ACTOR_CAR type

>>

SANNY

08EC: $TEMPVAR_CAR_TYPE = car $TEMPVAR_ACTOR_CAR class

Native: GET_VEHICLE_CLASS

It refers to the "class" field in vehicles.ide. I documented the numbers it returns:

CODE

normal = 0
poorfamily = 1
richfamily = 2
executive = 3
worker = 4
big = 5
taxi = 6
moped = 7
motorbike = 8
leisureboat = 9
workerboat = 10
bicycle = 11
ignore = -1

And while we're here.. the vehicle type documentation...

CODE

mtruck = 1
quad = 2
heli = 3
plane = 4
boat = 5
train = 6
f_heli = 3 (floating heli?)
f_plane = 8 (floating plane?)
bike = 9
bmx = 10
trailer = 11

[Deji]

09B2 is very wrong...

SANNY

09B2: get_random_available_car_type 1 model_to 150@ doorlock_to 151@

>>

SANNY

09B2: get_random_available_car_unk 1 model_to 150@ class_to 151@

Not certain what the first param is but I know it's a boolean that seems to tell the game to choose from specific classes of vehicles.

The purpose of the opcode is to return a vehicle model which is already loaded in the game (or maybe the boolean sets whether to only include loaded models). So it's good for getting vehicles which suit the current population cycle.

[MasterK]

Sorry for disturbing right after registration, but the opcode database has some problem, so it won't load. Could you fix it please?

Also, you are doing a great job here!