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using System.Collections.Generic;
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using System.Text.Json;
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using Cthangover.Core.Factories.Impls;
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using Cthangover.Core.UI.Lights;
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using Cthangover.Tools.Services;
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using Godot;
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namespace Cthangover.Core.UI.Tool.LightEditor
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{
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/// <summary>
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/// Editor window for placing and configuring static lights on a background.
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/// Provides a sidebar with background selection, a light list with add/delete/select,
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/// per-light property editors (radius, influence, colour), draggable handles on a
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/// shader-powered preview, and JSON export. Uses <see cref="LightEditorController"/>
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/// for data management and <see cref="ModResourceService"/> for background textures.
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/// </summary>
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public partial class LightEditorWindow : ToolWindow
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{
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private LightEditorController controller;
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private ItemList backgroundList;
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private VBoxContainer lightListPanel;
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private Button addLightBtn;
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private TextureRect preview;
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private ShaderMaterial previewMaterial;
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private LineEdit radiusEdit;
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private LineEdit influenceEdit;
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private ColorPickerButton colorPicker;
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private TextEdit jsonEdit;
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private readonly List<LightEditorHandle> handles = new();
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private int selectedIndex = -1;
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private readonly List<string> bgIds = new();
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/// <summary>Constructs the window, creates the controller, builds UI, and loads the background list.</summary>
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public LightEditorWindow() : base("tools/light_editor/title")
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{
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controller = new LightEditorController();
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BuildUI();
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LoadBackgroundList();
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}
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protected override void Cleanup()
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{
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foreach (var h in handles)
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h.QueueFree();
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handles.Clear();
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}
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private Vector2 PreviewSize()
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{
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var sz = preview.Size;
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if (sz.X <= 0 || sz.Y <= 0)
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sz = new Vector2(1920, 1080);
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return sz;
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}
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private void RefreshAll()
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{
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RepositionHandles();
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controller.MarkDirty();
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controller.UpdatePreview(previewMaterial, preview.GlobalPosition, PreviewSize());
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UpdateLightList();
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UpdateJsonEdit();
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}
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private void BuildUI()
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{
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var outerVBox = CreateFillContainer();
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AddChild(outerVBox);
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var mainHBox = new HBoxContainer();
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mainHBox.SizeFlagsHorizontal = Control.SizeFlags.ExpandFill;
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mainHBox.SizeFlagsVertical = Control.SizeFlags.ExpandFill;
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outerVBox.AddChild(mainHBox);
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var sidebarVBox = new VBoxContainer();
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var sidebar = CreateSidebar(sidebarVBox);
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mainHBox.AddChild(sidebar);
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sidebarVBox.AddChild(new Label { Text = TranslationServer.Translate("tools/light_editor/background") });
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backgroundList = new ItemList();
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backgroundList.CustomMinimumSize = new Vector2(0, 140);
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backgroundList.ItemSelected += OnBackgroundSelected;
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sidebarVBox.AddChild(backgroundList);
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sidebarVBox.AddChild(new Label { Text = TranslationServer.Translate("tools/light_editor/static_lights") });
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lightListPanel = new VBoxContainer();
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sidebarVBox.AddChild(lightListPanel);
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addLightBtn = new Button { Text = TranslationServer.Translate("tools/light_editor/add_light") };
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addLightBtn.Pressed += OnAddLight;
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sidebarVBox.AddChild(addLightBtn);
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sidebarVBox.AddChild(new Label { Text = TranslationServer.Translate("tools/light_editor/selected_props") });
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var radiusHBox = new HBoxContainer();
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radiusHBox.AddChild(new Label { Text = TranslationServer.Translate("tools/light_editor/radius") });
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radiusEdit = new LineEdit { Text = "300" };
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radiusEdit.SizeFlagsHorizontal = Control.SizeFlags.ExpandFill;
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radiusEdit.TextChanged += OnRadiusChanged;
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radiusHBox.AddChild(radiusEdit);
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sidebarVBox.AddChild(radiusHBox);
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var infHBox = new HBoxContainer();
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infHBox.AddChild(new Label { Text = TranslationServer.Translate("tools/light_editor/influence") });
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influenceEdit = new LineEdit { Text = "1" };
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influenceEdit.SizeFlagsHorizontal = Control.SizeFlags.ExpandFill;
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influenceEdit.TextChanged += OnInfluenceChanged;
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infHBox.AddChild(influenceEdit);
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sidebarVBox.AddChild(infHBox);
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var colorHBox = new HBoxContainer();
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colorHBox.AddChild(new Label { Text = TranslationServer.Translate("tools/light_editor/color") });
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colorPicker = new ColorPickerButton { Color = Colors.Yellow };
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colorPicker.SizeFlagsHorizontal = Control.SizeFlags.ExpandFill;
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colorPicker.ColorChanged += OnColorChanged;
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colorHBox.AddChild(colorPicker);
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sidebarVBox.AddChild(colorHBox);
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var importBtn = new Button { Text = TranslationServer.Translate("tools/light_editor/import_json") };
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importBtn.Pressed += OnImport;
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sidebarVBox.AddChild(importBtn);
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sidebarVBox.AddChild(new Label { Text = TranslationServer.Translate("tools/light_editor/norm_coords") });
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var previewContainer = new PanelContainer();
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previewContainer.SizeFlagsHorizontal = Control.SizeFlags.ExpandFill;
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previewContainer.SizeFlagsVertical = Control.SizeFlags.ExpandFill;
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mainHBox.AddChild(previewContainer);
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preview = new TextureRect();
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preview.ExpandMode = TextureRect.ExpandModeEnum.IgnoreSize;
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preview.StretchMode = TextureRect.StretchModeEnum.KeepAspectCentered;
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preview.MouseFilter = Control.MouseFilterEnum.Stop;
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preview.SizeFlagsHorizontal = Control.SizeFlags.ExpandFill;
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preview.SizeFlagsVertical = Control.SizeFlags.ExpandFill;
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previewContainer.AddChild(preview);
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previewMaterial = controller.CreatePreviewMaterial();
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preview.Material = previewMaterial;
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jsonEdit = new TextEdit();
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jsonEdit.CustomMinimumSize = new Vector2(0, 70);
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jsonEdit.SizeFlagsHorizontal = Control.SizeFlags.ExpandFill;
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jsonEdit.WrapMode = TextEdit.LineWrappingMode.Boundary;
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jsonEdit.TextChanged += OnJsonEditChanged;
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outerVBox.AddChild(jsonEdit);
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}
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private void OnJsonEditChanged()
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{
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}
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private void UpdateJsonEdit()
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{
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var json = controller.ExportLightsJson();
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if (jsonEdit.Text != json)
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jsonEdit.Text = json;
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}
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private void LoadBackgroundList()
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{
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bgIds.Clear();
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backgroundList.Clear();
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var ids = ModResourceService.GetBackgroundIds();
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bgIds.AddRange(ids);
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foreach (var id in ids)
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backgroundList.AddItem(id);
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}
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private void OnBackgroundSelected(long index)
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{
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var bgId = bgIds[(int)index];
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var tex = BackgroundFactory.Instance.Get(bgId);
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preview.Texture = tex;
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controller.SetBackgroundForPreview(tex, previewMaterial);
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var depthTex = BackgroundFactory.Instance.Get(bgId + "_depth");
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if (depthTex != null)
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controller.SetDepthForPreview(depthTex, previewMaterial);
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var albedoTex = BackgroundFactory.Instance.Get(bgId + "_albedo");
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if (albedoTex != null)
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controller.SetAlbedoForPreview(albedoTex, previewMaterial);
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}
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private void OnAddLight()
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{
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if (handles.Count >= 10)
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return;
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var light = new LightDef
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{
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X = 0.4f,
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Y = 0.3f,
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Radius = 300f,
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Influence = 1f,
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ColorHex = "#ffff00"
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};
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controller.AddLight(light);
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AddHandle(light, controller.Lights.Count - 1);
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RefreshAll();
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}
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private void AddHandle(LightDef light, int index)
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{
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var handle = new LightEditorHandle(light, index);
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handle.DragUpdate += globalCenter =>
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{
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var localCenter = globalCenter - preview.GlobalPosition;
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var currentSize = PreviewSize();
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light.FromPixelPos(localCenter, currentSize);
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RefreshAll();
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};
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handle.Clicked += () => SelectHandle(index);
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preview.AddChild(handle);
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handles.Add(handle);
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RepositionHandle(handle, light);
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}
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private void RepositionHandle(LightEditorHandle handle, LightDef light)
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{
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var size = PreviewSize();
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handle.GlobalPosition = preview.GlobalPosition
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+ new Vector2(light.X * size.X - 12, light.Y * size.Y - 12);
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}
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private void RepositionHandles()
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{
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for (int i = 0; i < handles.Count && i < controller.Lights.Count; i++)
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RepositionHandle(handles[i], controller.Lights[i]);
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}
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private void SelectHandle(int index)
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{
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selectedIndex = index;
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if (index < 0 || index >= controller.Lights.Count)
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{
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radiusEdit.Text = "300";
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influenceEdit.Text = "1";
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colorPicker.Color = Colors.Yellow;
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return;
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}
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var light = controller.Lights[index];
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radiusEdit.Text = light.Radius.ToString("F0");
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influenceEdit.Text = light.Influence.ToString("F2");
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colorPicker.Color = light.ToColor();
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}
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private void OnRadiusChanged(string text)
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{
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if (selectedIndex < 0 || selectedIndex >= controller.Lights.Count)
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return;
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if (float.TryParse(text, out var val))
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{
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controller.Lights[selectedIndex].Radius = val;
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RefreshAll();
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}
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}
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private void OnInfluenceChanged(string text)
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{
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if (selectedIndex < 0 || selectedIndex >= controller.Lights.Count)
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return;
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if (float.TryParse(text, out var val))
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{
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controller.Lights[selectedIndex].Influence = val;
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RefreshAll();
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}
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}
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private void OnColorChanged(Color color)
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{
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if (selectedIndex < 0 || selectedIndex >= controller.Lights.Count)
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return;
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controller.Lights[selectedIndex].ColorHex = color.ToHtml();
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RefreshAll();
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}
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private void UpdateLightList()
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{
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foreach (var child in lightListPanel.GetChildren())
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child.QueueFree();
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for (int i = 0; i < controller.Lights.Count; i++)
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{
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var light = controller.Lights[i];
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var hBox = new HBoxContainer();
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var label = new Label
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{
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Text = string.Format(TranslationServer.Translate("tools/light_editor/light_n"), i + 1, light.X, light.Y),
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SizeFlagsHorizontal = Control.SizeFlags.ExpandFill
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};
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hBox.AddChild(label);
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var selBtn = new Button { Text = TranslationServer.Translate("tools/light_editor/btn_select") };
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int idx = i;
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selBtn.Pressed += () => SelectHandle(idx);
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hBox.AddChild(selBtn);
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var delBtn = new Button { Text = TranslationServer.Translate("tools/light_editor/btn_delete") };
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delBtn.Pressed += () => RemoveLight(idx);
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hBox.AddChild(delBtn);
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lightListPanel.AddChild(hBox);
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}
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addLightBtn.Disabled = controller.Lights.Count >= 10;
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}
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private void RemoveLight(int index)
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{
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if (index < 0 || index >= controller.Lights.Count)
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return;
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controller.RemoveLight(index);
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if (index < handles.Count)
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{
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handles[index].QueueFree();
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handles.RemoveAt(index);
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}
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for (int i = 0; i < handles.Count; i++)
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handles[i].LightIndex = i;
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if (selectedIndex == index)
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selectedIndex = -1;
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else if (selectedIndex > index)
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selectedIndex--;
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RefreshAll();
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}
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private void OnImport()
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{
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var json = jsonEdit.Text;
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if (string.IsNullOrWhiteSpace(json))
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return;
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try
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{
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var lights = JsonSerializer.Deserialize<List<LightDef>>(json, Cthangover.Core.Utils.JsonOptionsProvider.ReadOptions);
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if (lights == null || lights.Count == 0)
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return;
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foreach (var h in handles)
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h.QueueFree();
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handles.Clear();
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controller.Clear();
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foreach (var light in lights)
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{
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controller.AddLight(light);
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AddHandle(light, controller.Lights.Count - 1);
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}
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selectedIndex = -1;
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RefreshAll();
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}
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catch
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{
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}
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}
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}
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}
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