Looking to make sure only trainwagona.entity spawns on the tracks.  Ideas?

Internally, Rust uses 2 populations for aboveground trains. The aboveground workcart population is determined by the traincar.population convar. The wagon population is derived from traincar.population times traincar.wagons_per_engine.

Each population has a list of prefabs that it can spawn. A simple plugin could probably be made to alter the prefabs in the wagon population to remove the ones you don't want. I can probably whip something out this week for that.

WhiteThunder

Internally, Rust uses 2 populations for aboveground trains. The aboveground workcart population is determined by the traincar.population convar. The wagon population is derived from traincar.population times traincar.wagons_per_engine.

Each population has a list of prefabs that it can spawn. A simple plugin could probably be made to alter the prefabs in the wagon population to remove the ones you don't want. I can probably whip something out this week for that.

Looking forward to it!

Here you go. Save as TrainWagonPopulationSettings.cs.

using System.Collections.Generic;
using System.Linq;

namespace Oxide.Plugins
{
    [Info("Train Wagon Population Settings", "WhiteThunder", "1.0.0")]
    [Description("Allows customizing which Train Wagon prefabs spawn on the aboveground rail.")]
    public class TrainWagonPopulationSettings : CovalencePlugin
    {
        private string[] AllowedWagonPrefabs = new string[]
        {
            // Instructions: Prefix each of the following lines with "//" to disable that prefab.
            // Note: You will have to manually remove existing train cars that have already spawned.
            "assets/content/vehicles/train/trainwagona.entity.prefab",
            "assets/content/vehicles/train/trainwagonb.entity.prefab",
            "assets/content/vehicles/train/trainwagonc.entity.prefab",
            "assets/content/vehicles/train/trainwagond.entity.prefab",
        };

        private void OnServerInitialized()
        {
            foreach (var population in SingletonComponent<SpawnHandler>.Instance.ConvarSpawnPopulations)
            {
                var railPopulation = population as ConvarControlledSpawnPopulationRailRing;
                if (railPopulation == null || !railPopulation.IsWagon)
                    continue;

                var prefabList = new List<Prefab<Spawnable>>();

                foreach (var prefabPath in AllowedWagonPrefabs)
                {
                    var gameObject = GameManager.server.FindPrefab(prefabPath);
                    if (gameObject == null)
                    {
                        LogWarning($"Invalid prefab: {prefabPath}");
                        continue;
                    }

                    var spawnable = gameObject.GetComponent<Spawnable>();
                    if (spawnable == null)
                    {
                        LogWarning($"Prefab has no Spawnable component: {prefabPath}");
                        continue;
                    }

                    prefabList.Add(new Prefab<Spawnable>(prefabPath, gameObject, spawnable, GameManager.server, PrefabAttribute.server));
                }

                population.Prefabs = prefabList.ToArray();
                population.numToSpawn = new int[population.Prefabs.Length];
            }
        }
    }
}

Worked like a charm.  Thank you!

WhiteThunder

Here you go. Save as TrainWagonPopulationSettings.cs.

using System.Collections.Generic;
using System.Linq;

namespace Oxide.Plugins
{
    [Info("Train Wagon Population Settings", "WhiteThunder", "1.0.0")]
    [Description("Allows customizing which Train Wagon prefabs spawn on the aboveground rail.")]
    public class TrainWagonPopulationSettings : CovalencePlugin
    {
        private string[] AllowedWagonPrefabs = new string[]
        {
            // Instructions: Prefix each of the following lines with "//" to disable that prefab.
            // Note: You will have to manually remove existing train cars that have already spawned.
            "assets/content/vehicles/train/trainwagona.entity.prefab",
            "assets/content/vehicles/train/trainwagonb.entity.prefab",
            "assets/content/vehicles/train/trainwagonc.entity.prefab",
            "assets/content/vehicles/train/trainwagond.entity.prefab",
        };

        private void OnServerInitialized()
        {
            foreach (var population in SingletonComponent<SpawnHandler>.Instance.ConvarSpawnPopulations)
            {
                var railPopulation = population as ConvarControlledSpawnPopulationRailRing;
                if (railPopulation == null || !railPopulation.IsWagon)
                    continue;

                var prefabList = new List<Prefab<Spawnable>>();

                foreach (var prefabPath in AllowedWagonPrefabs)
                {
                    var gameObject = GameManager.server.FindPrefab(prefabPath);
                    if (gameObject == null)
                    {
                        LogWarning($"Invalid prefab: {prefabPath}");
                        continue;
                    }

                    var spawnable = gameObject.GetComponent<Spawnable>();
                    if (spawnable == null)
                    {
                        LogWarning($"Prefab has no Spawnable component: {prefabPath}");
                        continue;
                    }

                    prefabList.Add(new Prefab<Spawnable>(prefabPath, gameObject, spawnable, GameManager.server, PrefabAttribute.server));
                }

                population.Prefabs = prefabList.ToArray();
                population.numToSpawn = new int[population.Prefabs.Length];
            }
        }
    }
}

masshole

This is exactally what I've been looking for! Any chance if you find a spare minute to update this? Getting error "CS0584: Internal compiler error: Object reference not set to an instance of an object". Im sure the recent updates broke it. This would be much apprecited.

I am also interested, it is to activate trains on smaller custom maps

To make it work correctly today you have to change the following line:
var railPopulation = population as ConvarControlledSpawnPopulationRail;

ninco90

To make it work correctly today you have to change the following line:
var railPopulation = population as ConvarControlledSpawnPopulationRail;

Ty homie

Now we have unloadable wagons. I mostly want only those, but maybe 1 or 2 C or B's. I couldn't figure it out, Anyone got an updated version I can leech?

Hello. I'm currently getting the following error: Error while compiling TrainWagonPopulationSettings

'ConvarControlledSpawnPopulationRail' does not contain a definition for 'IsWagon' and no accessible extension method 'IsWagon' accepting a first argument of type 'ConvarControlledSpawnPopulationRail' could be found (are you missing a using directive or an assembly reference?) | Line: 25, Pos: 63

Is it possible to fix this? Thanks!