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/Sdl3GameInputs.cs
+++ b/Platforms/Desktop/Engine.Integration.SDL3/Sdl3GameInputs.cs
@@ -0,0 +1,134 @@
+using System;
+using System.Collections.Generic;
+
+using Engine.Core;
+using Engine.Systems.Input;
+
+using MyUniverse.Shared.Behaviours.Abstract;
+
+using SDL3;
+
+namespace Engine.Integration.SDL3;
+
+public class Sdl3GameInputs : Behaviour, IGameInputs, IFirstFrameUpdate
+{
+    public IButtonInputs<IGameInputs.Button>.InputEvent OnAnyButtonPressed { get; } = new();
+    public IButtonInputs<IGameInputs.Button>.InputEvent OnAnyButtonReleased { get; } = new();
+
+    private readonly Dictionary<IGameInputs.Button, IButtonInputs<IGameInputs.Button>.InputEvent> OnPressed = new(256);
+    private readonly Dictionary<IGameInputs.Button, IButtonInputs<IGameInputs.Button>.InputEvent> OnReleased = new(256);
+
+    private readonly Dictionary<IGameInputs.Button, SDL.Keycode> keyMappingReversed = [];
+    private readonly Dictionary<SDL.Keycode, IGameInputs.Button> keyMapping = new() {
+        { SDL.Keycode.Space, IGameInputs.Button.Interact }
+    };
+
+    private Sdl3KeyboardInputs keyboardInputs = null!;
+
+    public void FirstActiveFrame()
+    {
+        keyboardInputs = BehaviourController.GetOrAddBehaviour<Sdl3KeyboardInputs>();
+        keyboardInputs.OnAnyButtonPressed.AddListener(AnyPressCallback);
+        keyboardInputs.OnAnyButtonReleased.AddListener(AnyReleaseCallback);
+
+        foreach ((SDL.Keycode key, IGameInputs.Button button) in keyMapping)
+            keyboardInputs.RegisterOnPress(key, PressCallback);
+
+        foreach ((SDL.Keycode key, IGameInputs.Button button) in keyMapping)
+            keyboardInputs.RegisterOnRelease(key, ReleaseCallback);
+    }
+
+    public void ExitUniverse(IUniverse universe)
+    {
+        keyboardInputs.OnAnyButtonPressed.RemoveListener(AnyPressCallback);
+        keyboardInputs.OnAnyButtonReleased.RemoveListener(AnyReleaseCallback);
+
+        foreach ((SDL.Keycode key, IGameInputs.Button button) in keyMapping)
+            keyboardInputs.UnregisterOnPress(key, PressCallback);
+
+        foreach ((SDL.Keycode key, IGameInputs.Button button) in keyMapping)
+            keyboardInputs.UnregisterOnRelease(key, ReleaseCallback);
+    }
+
+    private void PressCallback(IButtonInputs<SDL.Keycode> sender, IButtonInputs<SDL.Keycode>.ButtonCallbackArguments args)
+    {
+        if (!keyMapping.TryGetValue(args.Button, out IGameInputs.Button button))
+            return;
+
+        if (!OnPressed.TryGetValue(button, out IButtonInputs<IGameInputs.Button>.InputEvent? @event))
+            return;
+
+        @event.Invoke(this, new(button));
+    }
+
+    private void ReleaseCallback(IButtonInputs<SDL.Keycode> sender, IButtonInputs<SDL.Keycode>.ButtonCallbackArguments args)
+    {
+        if (!keyMapping.TryGetValue(args.Button, out IGameInputs.Button button))
+            return;
+
+        if (!OnReleased.TryGetValue(button, out IButtonInputs<IGameInputs.Button>.InputEvent? @event))
+            return;
+
+        @event.Invoke(this, new(button));
+    }
+
+    private void AnyReleaseCallback(IButtonInputs<SDL.Keycode> sender, IButtonInputs<SDL.Keycode>.ButtonCallbackArguments args)
+    {
+        if (keyMapping.TryGetValue(args.Button, out IGameInputs.Button button))
+            OnAnyButtonPressed?.Invoke(this, new(button));
+    }
+
+    private void AnyPressCallback(IButtonInputs<SDL.Keycode> sender, IButtonInputs<SDL.Keycode>.ButtonCallbackArguments args)
+    {
+        if (keyMapping.TryGetValue(args.Button, out IGameInputs.Button button))
+            OnAnyButtonPressed?.Invoke(this, new(button));
+    }
+
+    public void RegisterOnPress(IGameInputs.Button button, IButtonInputs<IGameInputs.Button>.InputEvent.EventHandler callback)
+    {
+        if (!OnPressed.TryGetValue(button, out IButtonInputs<IGameInputs.Button>.InputEvent? @event))
+        {
+            @event = new();
+            OnPressed.Add(button, @event);
+        }
+
+        @event.AddListener(callback);
+    }
+
+    public void UnregisterOnPress(IGameInputs.Button button, IButtonInputs<IGameInputs.Button>.InputEvent.EventHandler callback)
+    {
+        if (OnPressed.TryGetValue(button, out IButtonInputs<IGameInputs.Button>.InputEvent? @event))
+            @event.RemoveListener(callback);
+    }
+
+    public void RegisterOnRelease(IGameInputs.Button button, IButtonInputs<IGameInputs.Button>.InputEvent.EventHandler callback)
+    {
+        if (!OnReleased.TryGetValue(button, out IButtonInputs<IGameInputs.Button>.InputEvent? @event))
+        {
+            @event = new();
+            OnReleased.Add(button, @event);
+        }
+
+        @event.AddListener(callback);
+    }
+
+    public void UnregisterOnRelease(IGameInputs.Button button, IButtonInputs<IGameInputs.Button>.InputEvent.EventHandler callback)
+    {
+        if (OnReleased.TryGetValue(button, out IButtonInputs<IGameInputs.Button>.InputEvent? @event))
+            @event.RemoveListener(callback);
+    }
+
+    public bool IsPressed(IGameInputs.Button button)
+    {
+        if (!keyMappingReversed.TryGetValue(button, out SDL.Keycode key))
+            throw new($"{Enum.GetName(button)} is not mapped correctly");
+
+        return keyboardInputs.IsPressed(key);
+    }
+
+    public Sdl3GameInputs()
+    {
+        foreach ((SDL.Keycode key, IGameInputs.Button button) in keyMapping)
+            keyMappingReversed.Add(button, key);
+    }
+}