Separated window for game and editor

2026-09-05 21:01:52 +00:00 · 2023-03-24 22:48:55 +01:00
parent 184480243f
commit f16fbc3984
6 changed files with 493 additions and 271 deletions
@@ -0,0 +1,106 @@
+using System;
+using ImGui;
+using GlitchyEngine.Renderer;
+using GlitchyEngine.Math;
+using GlitchyEngine;
+using GlitchyEngine.World;
+using ImGuizmo;
+using GlitchyEngine.Events;
+
+namespace GlitchyEditor.EditWindows
+{
+	class GameViewportWindow : EditorWindow
+	{
+		public const String s_WindowTitle = "Game";
+
+		private ImGui.Vec2 _oldViewportSize = .(100, 100);
+		private bool _viewPortChanged;
+
+		private bool _visible;
+
+		private RenderTargetGroup _renderTarget ~ _?.ReleaseRef();
+
+		public Vector2 ViewportSize => (Vector2)_oldViewportSize;
+		// Occurs when the viewport is resized.
+		public Event<EventHandler<Vector2>> ViewportSizeChanged ~ _.Dispose();
+		// Occurs when an entity was clicked.
+		public Event<EventHandler<uint32>> EntityClicked ~ _.Dispose();
+
+		/// The render target that is shown in the viewport window.
+		public RenderTargetGroup RenderTarget
+		{
+			get => _renderTarget;
+			set
+			{
+				if(_renderTarget == value)
+					return;
+
+				SetReference!(_renderTarget, value);
+			}
+		}
+
+		public bool Visible => _visible;
+
+		public this(Editor editor)
+		{
+			_editor = editor;
+		}
+
+		protected override void InternalShow()
+		{
+			ImGui.PushStyleVar(.WindowPadding, ImGui.Vec2(1, 1));
+			defer ImGui.PopStyleVar();
+
+			if(!ImGui.Begin(s_WindowTitle, &_open, .NoScrollbar | .MenuBar))
+			{
+				ImGui.End();
+
+				_visible = false;
+				return;
+			}
+
+			_visible = true;
+
+			let viewportSize = ImGui.GetContentRegionAvail();
+
+			if(ImGui.IsWindowHovered() && Input.IsMouseButtonPressing(.RightButton))
+			{
+				let currentWindow = ImGui.GetCurrentWindow();
+				ImGui.FocusWindow(currentWindow);
+			}
+
+			_hasFocus = ImGui.IsWindowFocused();
+			
+			if(_renderTarget != null)
+			{
+				ImGui.Image(_renderTarget.GetViewBinding(0), viewportSize);
+			}
+
+			ImGui.End();
+
+			if(_oldViewportSize != viewportSize)
+			{
+				ViewportSizeChanged.Invoke(this, (Vector2)viewportSize);
+				_viewPortChanged = true;
+				_oldViewportSize = viewportSize;
+			}
+		}
+
+		/// Provides the ImGui Drop target and handles dropped payload.
+		private void HandleDropTarget()
+		{
+			if (ImGui.BeginDragDropTarget())
+			{
+				ImGui.Payload* payload = ImGui.AcceptDragDropPayload("CONTENT_BROWSER_ITEM");
+
+				if (payload != null)
+				{
+					StringView path = .((char8*)payload.Data, (int)payload.DataSize);
+					_editor.RequestOpenScene(this, path);
+				}
+
+				ImGui.EndDragDropTarget();
+			}
+		}
+	}
+}