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/Sdl3KeyboardInputs.cs
+++ b/Platforms/Desktop/Engine.Integration.SDL3/Sdl3KeyboardInputs.cs
@@ -0,0 +1,87 @@
+using System.Collections.Generic;
+
+using Engine.Core;
+using Engine.Systems.Input;
+
+using SDL3;
+
+namespace Engine.Integration.SDL3;
+
+public class Sdl3KeyboardInputs : Behaviour, ISdl3EventProcessor, IButtonInputs<SDL.Keycode>
+{
+    public IButtonInputs<SDL.Keycode>.InputEvent OnAnyButtonPressed { get; } = new();
+    public IButtonInputs<SDL.Keycode>.InputEvent OnAnyButtonReleased { get; } = new();
+
+    private readonly Dictionary<SDL.Keycode, IButtonInputs<SDL.Keycode>.InputEvent> OnPressed = new(256);
+    private readonly Dictionary<SDL.Keycode, IButtonInputs<SDL.Keycode>.InputEvent> OnReleased = new(256);
+
+    private readonly FastList<SDL.Keycode> currentlyPressedKeys = [];
+
+    public void RegisterOnPress(SDL.Keycode key, IButtonInputs<SDL.Keycode>.InputEvent.EventHandler callback)
+    {
+        if (!OnPressed.TryGetValue(key, out IButtonInputs<SDL.Keycode>.InputEvent? delegateCallback))
+        {
+            delegateCallback = new();
+            OnPressed.Add(key, delegateCallback);
+        }
+
+        delegateCallback.AddListener(callback);
+    }
+
+    public void UnregisterOnPress(SDL.Keycode key, IButtonInputs<SDL.Keycode>.InputEvent.EventHandler callback)
+    {
+        if (OnPressed.TryGetValue(key, out IButtonInputs<SDL.Keycode>.InputEvent? delegateCallback))
+            delegateCallback.RemoveListener(callback);
+    }
+
+    public void RegisterOnRelease(SDL.Keycode key, IButtonInputs<SDL.Keycode>.InputEvent.EventHandler callback)
+    {
+        if (!OnReleased.TryGetValue(key, out IButtonInputs<SDL.Keycode>.InputEvent? delegateCallback))
+        {
+            delegateCallback = new();
+            OnReleased.Add(key, delegateCallback);
+        }
+
+        delegateCallback.AddListener(callback);
+    }
+
+    public void UnregisterOnRelease(SDL.Keycode key, IButtonInputs<SDL.Keycode>.InputEvent.EventHandler callback)
+    {
+        if (OnReleased.TryGetValue(key, out IButtonInputs<SDL.Keycode>.InputEvent? delegateCallback))
+            delegateCallback.RemoveListener(callback);
+    }
+
+    public bool IsPressed(SDL.Keycode button) => currentlyPressedKeys.Contains(button);
+
+    public void Process(SDL.Event sdlEvent)
+    {
+        switch ((SDL.EventType)sdlEvent.Type)
+        {
+            case SDL.EventType.KeyDown:
+                SDL.Keycode currentlyPressedKey = sdlEvent.Key.Key;
+                if (IsPressed(currentlyPressedKey))
+                    return;
+
+                currentlyPressedKeys.Add(currentlyPressedKey);
+
+                if (OnPressed.TryGetValue(currentlyPressedKey, out IButtonInputs<SDL.Keycode>.InputEvent? pressCallback))
+                    pressCallback?.Invoke(this, new(currentlyPressedKey));
+
+                OnAnyButtonPressed?.Invoke(this, new(currentlyPressedKey));
+                return;
+
+            case SDL.EventType.KeyUp:
+                SDL.Keycode previouslyPressedKey = sdlEvent.Key.Key;
+                if (!IsPressed(previouslyPressedKey))
+                    return;
+
+                currentlyPressedKeys.Remove(previouslyPressedKey);
+
+                if (OnReleased.TryGetValue(previouslyPressedKey, out IButtonInputs<SDL.Keycode>.InputEvent? releaseCallback))
+                    releaseCallback?.Invoke(this, new(previouslyPressedKey));
+
+                OnAnyButtonReleased?.Invoke(this, new(previouslyPressedKey));
+                return;
+        }
+    }
+}