Maybe I don't understand OnSave()?

[orionguy]

Very very new to KSP mods but not new to programming.  

I set up my IDE and used the example mod from the forums and everything works great.  

I'm just confused about OnSave.  I will eventually want to send a message with the persistence file to a node.js api every time the game has been saved by the user or by persistence.  First step is knowing when the game has been saved.  I have tried the following...

using System;
using UnityEngine;

namespace TestMod
{
    [KSPScenario(ScenarioCreationOptions.AddToNewGames | ScenarioCreationOptions.AddToExistingGames, GameScenes.SPACECENTER | GameScenes.MAINMENU | GameScenes.FLIGHT)]
    public class TestMod : ScenarioModule
    {
        public override void OnLoad(ConfigNode node)
        {
            base.OnLoad(node);
        }
        public override void OnSave(ConfigNode node)
        {
            Debug.Log("A save happened!");
            base.OnSave(node);
        }
    }
}

Nothing happens.  Maybe I don't understand when OnSave is triggered or why?  or how?  

Thanks for any help you can provide.

[Jason Melancon]

Does it work if you delete "override" from the method definitions? That modifier is absent in the "Getting Started" thread examples (https://forum.kerbalspaceprogram.com/index.php?/topic/153765-getting-started-the-basics-of-writing-a-plug-in/).

[orionguy]

On 8/28/2022 at 3:11 PM, Jason Melancon said:

Does it work if you delete "override" from the method definitions? That modifier is absent in the "Getting Started" thread examples (https://forum.kerbalspaceprogram.com/index.php?/topic/153765-getting-started-the-basics-of-writing-a-plug-in/).

Thanks for the help, but that change didn't do the trick.

However, I saw other examples where folks used KSPAddon instead of KSPScenario and bound their own load and save functions to the  GameEvents.  This seems to work.

using System;
using UnityEngine;

namespace TestMod
{
    [KSPAddon(KSPAddon.Startup.MainMenu, true)]
    public class TestMod : MonoBehaviour
    {
        public void Awake()
        {
            Debug.Log("Testmod Awake");

            GameEvents.onGameStateCreated.Add(GameLoad);
            GameEvents.onGameStateSaved.Add(GameSave);
        }
        public void GameLoad(Game game)
        {
            Debug.Log("Load triggered");
        }
        public void GameSave(Game game)
        {
            Debug.Log("Save triggered");
        } 
    }
}