feat: added basic window, input & drawing

2026-01-28 22:38:17 +03:00
parent 18ac6b23fd
commit 129aae563e
12 changed files with 754 additions and 96 deletions
--- a/Platforms/Desktop/Engine.Integration.SDL3/Sdl3WindowManager.cs
+++ b/Platforms/Desktop/Engine.Integration.SDL3/Sdl3WindowManager.cs
@@ -0,0 +1,71 @@
+using System.Collections.Generic;
+using Engine.Core;
+
+using SDL3;
+
+namespace Engine.Integration.SDL3;
+
+public class Sdl3WindowManager : Behaviour, IUpdate, IEnterUniverse, IExitUniverse
+{
+    private readonly BehaviourCollector<Sdl3Window> windows = new();
+    private readonly BehaviourCollector<ISdl3EventProcessor> eventProcessors = new();
+    private readonly Dictionary<nint, Sdl3Window> windowsDictionary = [];
+
+    public Sdl3WindowManager()
+    {
+        windows.OnCollected.AddListener(OnWindowCollected);
+        windows.OnRemoved.AddListener(OnWindowRemoved);
+    }
+
+    private void OnWindowCollected(IBehaviourCollector<Sdl3Window> sender, IBehaviourCollector<Sdl3Window>.BehaviourCollectedArguments args)
+        => windowsDictionary.Add(args.BehaviourCollected.Window, args.BehaviourCollected);
+
+    private void OnWindowRemoved(IBehaviourCollector<Sdl3Window> sender, IBehaviourCollector<Sdl3Window>.BehaviourRemovedArguments args)
+    {
+        windowsDictionary.Remove(args.BehaviourRemoved.Window);
+        if (windowsDictionary.Count == 0)
+            SDL.Quit();
+    }
+
+    public void EnterUniverse(IUniverse universe)
+    {
+        windows.Assign(universe);
+        eventProcessors.Assign(universe);
+    }
+
+    public void ExitUniverse(IUniverse universe)
+    {
+        windows.Unassign();
+        eventProcessors.Unassign();
+    }
+
+    public void Update()
+    {
+        while (SDL.PollEvent(out SDL.Event e))
+            ProcessInternalEvents(e);
+    }
+
+    private void ProcessInternalEvents(SDL.Event sdlEvent)
+    {
+        if (!windowsDictionary.TryGetValue(SDL.GetWindowFromID(sdlEvent.Window.WindowID), out Sdl3Window? window))
+            return;
+
+        for (int i = 0; i < eventProcessors.Count; i++)
+            eventProcessors[i].Process(sdlEvent);
+
+        SDL.EventType eventType = (SDL.EventType)sdlEvent.Type;
+
+        switch (eventType)
+        {
+            case SDL.EventType.WindowRestored: window.ShowState = WindowShowState.Normal; break;
+            case SDL.EventType.WindowMaximized: window.ShowState = WindowShowState.Maximized; break;
+            case SDL.EventType.WindowMinimized: window.ShowState = WindowShowState.Minimized; break;
+
+            case SDL.EventType.WindowFocusGained: window.FocusState = WindowFocusState.Focused; break;
+            case SDL.EventType.WindowFocusLost: window.FocusState = WindowFocusState.Unfocused; break;
+
+            case SDL.EventType.WindowCloseRequested:
+            case SDL.EventType.Quit: Universe.Remove(window.UniverseObject); break;
+        }
+    }
+}