87 lines
No EOL
2.9 KiB
C#
87 lines
No EOL
2.9 KiB
C#
using Android.App;
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using Android.Content;
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using Android.Graphics;
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using Android.OS;
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using Android.Runtime;
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using Android.Views;
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using StereoKit;
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using System;
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using System.Reflection;
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using System.Threading;
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namespace snake;
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[Activity(Label = "@string/app_name", MainLauncher = true, Exported = true)]
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[IntentFilter(new[] { Intent.ActionMain }, Categories = new[] { "org.khronos.openxr.intent.category.IMMERSIVE_HMD", "com.oculus.intent.category.VR", Intent.CategoryLauncher })]
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public class MainActivity : Activity, ISurfaceHolderCallback2
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{
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View surface;
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protected override void OnCreate(Bundle savedInstanceState)
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{
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base.OnCreate(savedInstanceState);
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Run();
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SetContentView(Resource.Layout.activity_main);
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}
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protected override void OnDestroy()
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{
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SK.Quit();
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base.OnDestroy();
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}
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static bool running = false;
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void Run()
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{
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if (running) return;
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running = true;
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// Before anything else, give StereoKit the Activity. This should
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// be set before any other SK calls, otherwise native library
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// loading may fail.
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SK.AndroidActivity = this;
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// Set up a surface for StereoKit to draw on, this is only really
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// important for flatscreen experiences.
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Window.TakeSurface(this);
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Window.SetFormat(Format.Unknown);
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surface = new View(this);
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SetContentView(surface);
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surface.RequestFocus();
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// Task.Run will eat exceptions, but Thread.Start doesn't seem to.
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new Thread(InvokeStereoKit).Start();
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}
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static void InvokeStereoKit()
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{
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Type entryClass = typeof(Program);
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MethodInfo entryPoint = entryClass?.GetMethod("Main", BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
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// There are a number of potential method signatures for Main, so
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// we need to check each one, and give it the correct values.
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//
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// Converting MethodInfo into an Action instead of calling Invoke on
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// it allows for exceptions to properly bubble up to the IDE.
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ParameterInfo[] entryParams = entryPoint?.GetParameters();
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if (entryParams == null || entryParams.Length == 0)
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{
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Action Program_Main = (Action)Delegate.CreateDelegate(typeof(Action), entryPoint);
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Program_Main();
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}
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else if (entryParams?.Length == 1 && entryParams[0].ParameterType == typeof(string[]))
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{
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Action<string[]> Program_Main = (Action<string[]>)Delegate.CreateDelegate(typeof(Action<string[]>), entryPoint);
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Program_Main(new string[] { });
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}
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else throw new Exception("Couldn't invoke Program.Main!");
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Process.KillProcess(Process.MyPid());
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}
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// Events related to surface state changes
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public void SurfaceChanged (ISurfaceHolder holder, [GeneratedEnum] Format format, int width, int height) => SK.SetWindow(holder.Surface.Handle);
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public void SurfaceCreated (ISurfaceHolder holder) => SK.SetWindow(holder.Surface.Handle);
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public void SurfaceDestroyed (ISurfaceHolder holder) => SK.SetWindow(IntPtr.Zero);
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public void SurfaceRedrawNeeded(ISurfaceHolder holder) { }
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} |