[ Tutorial ] How to make specific vehicle EXTRAS appear on a vehicle EVERY spawn.
SOME USEFUL VEHICLES.META FLAGS & WHAT THEY DO:
FLAG_EXTRAS_REQUIRE - Always spawn ONLY ONE random EXTRA.
FLAG_EXTRAS_ALL - Always spawn ALL EXTRAS.
FLAG_EXTRAS_RARE - Spawn ONLY ONE random EXTRA but ONLY ~15% of the time (~85% of the time no EXTRAS will spawn).
These flags (& any others) are written in the 'vehicles.meta' '<flags>' line like so:
<flags>FLAG_EXTRAS_RARE FLAG_SPORTS FLAG_RICH_CAR FLAG_HAS_INTERIOR_EXTRAS</flags>
They should be written all on the same line with a space between each of them.
FORCE SPECIFIC EXTRAS TO ALWAYS SPAWN:
To make this happen you need to make two small edits to your vehicle in 'vehicles.meta'.
For this example I'm going to force EXTRA_4 & EXTRA_11 to always spawn but you can just change these values to the extras you want to have spawn (...'>EXTRA_3 EXTRA_5 EXTRA_10<'... etc for example. You can put as many extras as you like in the lines).
As with the above flags the EXTRAS (below) are separated with a space.
1)- Find the line:
& change it to this format:
<extraIncludes> <Item>EXTRA_4 EXTRA_11</Item> </extraIncludes>
Now find the line:
& change that to this format:
That's it. Now everytime the vehicle spawns EXTRA_4 & EXTRA_11 will ALWAYS spawn also.
Note: If either of these edits are missing or incorrect the game will go back to default random extra spawning. Both are required to make it work.
HOW THESE EDITS WORK IN COMBINATION WITH FLAGS:
These two setting above work in combination with any flags set in the '<flags>' line.
For example if I was to add 'FLAG_EXTRAS_REQUIRE' to the '<flags>' line also, then EXTRA_4, EXTRA_11 & one random EXTRA would spawn all together on the vehicle.
In this scenario it is also possible for the FLAG_EXTRAS_REQUIRE's random extra to also be either EXTRA_4 or EXTRA_11 (rather than a different random extra) resulting in only EXTRA_4 & EXTRA_11 appearing some of the time.
If the 'FLAG_EXTRAS_ALL' flag is used in combination with these edits it will override them & force ALL EXTRAS to appear ALL of the time.
For 'FLAG_EXTRAS_RARE' see below.
STOPPING SPECIFIC EXTRAS FROM SPAWNING:
There doesn't seem to be any easy way of doing this in 'vehicles.meta'. The best I found was using the 'extraIncludes' & 'requiredExtras' edits above in combination with 'FLAG_EXTRAS_RARE' so that ~85%>90% of the time the vehicle spawns with only EXTRA_4 & EXTRA_11 & ~10%>15% of the time there is an additional random extra as well.
Extra: I'm not sure how much use this will be or whether it even applies to any cars other than the Dodge Dart I was testing but I'll mention it anyway.
I was able to enter 'FLAG_EXTRAS_RARE' & 'FLAG_EXTRAS_SCRIPT' in the '<flags>' line in combination with the two edits & was able to have EXTRA_4 & EXTRA_11 spawn all of the time but restict the random (~10%>15% of the time) EXTRA to only be able to select EXTRA_1, EXTRA_2 or EXTRA_3 (no other higher numbered random EXTRAS appeared in ~350 or so spawns). It may be pure luck GTA unicorns but it worked out rather well so try it out if you think that it might suit your need