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Worker.cs
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Worker.cs
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using Godot;
using System;
using System.Collections.Concurrent;
using System.Threading.Tasks;
public class Worker : Thread
{
public static Worker instance;
public static ConcurrentStack<WeakReference>placeholders;
public enum State
{
IDLE,
PREPARELEVEL,
}
private static State state;
private delegate void Goal();
private static Goal goal;
private static int delay;
private static bool quit;
public Worker() : base()
{
instance=this;
placeholders=new ConcurrentStack<WeakReference>();
setStatus(State.IDLE);
quit=false;
Start(this,nameof(Runner));
}
private void Runner()
{
while(!quit)
{
goal();
}
}
private static void instantiatePlaceholder(Placeholder placeholder)
{
try
{
if(!placeholder.isDisposed&&placeholder.IsInsideTree())
{
InstancePlaceholder iPlaceholder=placeholder.GetChild<InstancePlaceholder>(0);
string instancePath=iPlaceholder.GetInstancePath();
if(!ResourceLoader.HasCached(instancePath))
{
ResourceLoader.Load(instancePath);
}
placeholder.CallDeferred("remove_child",iPlaceholder);
iPlaceholder.Set("position",placeholder.Position);
World.level.CallDeferred("add_child",iPlaceholder);
iPlaceholder.CallDeferred("create_instance",false);
iPlaceholder.CallDeferred("queue_free");
}
placeholder.CallDeferred("queue_free");
}
catch(Exception e)
{
Console.WriteLine(e.GetType().Name);
}
}
private static void prepareAndChangeLevel()
{
placeholders.Clear();
World.instance.prepareAndChangeLevel();
setStatus(State.IDLE);
gc();
}
private static void idle()
{
delay=10;
if(placeholders.TryPop(out WeakReference result))
{
if(result.IsAlive)
{
Placeholder p=(Placeholder)result.Target;
instantiatePlaceholder(p);
delay=3;
}
}
OS.DelayMsec(delay);
}
public static void stop()
{
Console.Write("Wait for worker to finish...");
quit=true;
instance.WaitToFinish();
while(instance.IsActive())
{
Console.Write(".");
OS.DelayMsec(1);
}
Console.WriteLine(" done!");
}
public static void setStatus(State s)
{
switch(s)
{
case State.PREPARELEVEL:
goal=prepareAndChangeLevel;
break;
case State.IDLE:
goal=idle;
break;
}
state=s;
}
public static async void gc()
{
await Task.Run(delegate()
{
GC.Collect();
});
}
}