Make Vehicles Follow Each Other

[ScottyTooHotty 188]

Trying to make a convoy of 4 vehicles for one of my WIP callouts but cannot for the life of me get them to follow each other other. I've tried a magnitude of things but nothing is working. So if anyone can help with how to make a vehicle follow me it would be greatly appreciated. Thanks in advance.

[khorio 573]

There are escort and follow vehicle functions in the natives, but I've always used a while loop that keeps giving new coordinates.

[ScottyTooHotty 188]

13 minutes ago, khorio said:

There are escort and follow vehicle functions in the natives, but I've always used a while loop that keeps giving new coordinates.

I've tried that loop with the updating coords but the vehicles don't move :/

[khorio 573]

while(true)

{ Gamefiber.yield();

Ped1.tasks.follownavigationmesh(ped2.position, heading, speed)

}

Typed on my phone so don't mind the syntax 

That's what worked for me, should check at home 

[ScottyTooHotty 188]

@khorio Yeah, what I had is very similar from what I remember (I'm starting to redevelop the callout after a bit of time away from it). I'm probably going to write that section from the start again. Thank you.

[Darkmyre 701]

I'm using ped.Tasks.ChaseWithGroundVehicle() but in the context of a 'pursuit', probably wouldn't suit a convoy situation.

[ScottyTooHotty 188]

@Darkmyre Maybe not but it's still another option. What callout do you use it in?

[Darkmyre 701]

My Roadblock callout, to make the police vehicle chase the suspect towards the player. 

Another idea that might work, is assign all the vehicles an identical DriveToPosition task, with a WaitForCompletion() on the last task. You could probably even work out relative positions for the follow vehicles to make them keep formation a bit better.

[ScottyTooHotty 188]

@Darkmyre Ah I see, thank you. I'll be giving all these a try and let you know how it goes

[alexguirre 776]

Why not use TASK_VEHICLE_ESCORT? I used it and it works well. Give the first vehicle of the convoy a Task DriveToPosition, and in the others use the native with the target vehicle param the one they have in front. Check the nativeDB it has a bit of information about how to use this native.

[ScottyTooHotty 188]

@alexguirre I'll give that a shot too, thanks. The first vehicle in the convoy will be the player.  :P

[ScottyTooHotty 188]

@alexguirre What is it referring to when saying p7? Thanks.

[alexguirre 776]

6 minutes ago, ScottehBoyy said:

@alexguirre What is it referring to when saying p7? Thanks.

That it's the parameter number 7, basically the usage of it is unknown so nobody has renamed it, I'm not in my computer right so I can't check how I used it or how it's used in the game scripts, for now just pass 0.

[ScottyTooHotty 188]

10 minutes ago, alexguirre said:

That it's the parameter number 7, basically the usage of it is unknown so nobody has renamed it, I'm not in my computer right so I can't check how I used it or how it's used in the game scripts, for now just pass 0.

Alright sweet, thanks buddy. Also, the driving styles, I'm looking for one similar to the VehicleDrivingFlags.Emergency but I don't know which to choose. Will it matter as if they're following the players vehicle then if they go through a red then so will the following vehicle?

Edited May 28, 2016 by ScottehBoyy

[alexguirre 776]

13 minutes ago, ScottehBoyy said:

Alright sweet, thanks buddy. Also, the driving styles, I'm looking for one similar to the VehicleDrivingFlags.Emergency but I don't know which to choose. Will it matter as if they're following the players vehicle then if they go through a red then so will the following vehicle?

The driving styles in RPH are the VehicleDrivingFlags, if you need to pass it to a native, cast it to uint, e.g. (uint)VehicleDrivingFlags.Emergency.

[ScottyTooHotty 188]

@alexguirre Works pretty well man, only thing is that they seem to get a little confused sometimes haha. Especially in the middle of intersections. 

[Albo1125 4550]

11 hours ago, ScottehBoyy said:

@alexguirre Works pretty well man, only thing is that they seem to get a little confused sometimes haha. Especially in the middle of intersections. 

Welcome to GTAV's AI 

[alexguirre 776]

12 hours ago, ScottehBoyy said:

@alexguirre Works pretty well man, only thing is that they seem to get a little confused sometimes haha. Especially in the middle of intersections. 

The only thing I can recommend you if to tweak the parameters until you find something that works better, i.e the minDistance, driving flags, noRoadsDistance,...

Btw the the values used for the parameter p7 in the game scripts are -1, 20 and 0, try those maybe you notice a difference.

[ScottyTooHotty 188]

26 minutes ago, alexguirre said:

The only thing I can recommend you if to tweak the parameters until you find something that works better, i.e the minDistance, driving flags, noRoadsDistance,...

Btw the the values used for the parameter p7 in the game scripts are -1, 20 and 0, try those maybe you notice a difference.

I'll give each of the 3 vehicles a different p7 and see the difference. Thanks.