adminandClaude Opus 4.8
9c16b9e155
Drag a panel from anywhere on its surface (header, padding, labels, background) instead of only the header. Dragging is cancelled when the press starts on an interactable (Selectable toggle/slider or the color picker's UiPointerSurface), so widgets stay fully operable. Clamping is now anchor/pivot-agnostic, computed from the panel's real corners, so panels anchored bottom-center stay reachable in every screen corner. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
352 lines
14 KiB
C#
352 lines
14 KiB
C#
using System;
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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#if ENABLE_INPUT_SYSTEM
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using UnityEngine.InputSystem.UI;
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#endif
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/// <summary>
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/// In-game paint UI. Shows its panels only while the active <see cref="GameMode"/> is
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/// <see cref="PaintMode"/> (it follows the manager's ModeChanged event) and binds its
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/// widgets directly to the live <see cref="MeshPainter"/> fields, so edits apply immediately.
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///
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/// The layout is a transparent root holding one independently positioned sub-panel per channel
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/// (Albedo, Metallic+Smoothness, Occlusion, Emission) plus a global Brush card, each with a title
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/// bar and draggable from any of its non-widget surface. The layout comes from one of two sources:
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/// - an authored prefab assigned to <see cref="layoutPrefab"/> (instantiated, then bound), or
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/// - generated in code (the fallback when no prefab is set).
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/// Either way the *bindings* (listeners, picker gradient sprites, painter values) live in code
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/// and are (re)applied at runtime by <see cref="WirePanel"/>. A prefab stores only the visual
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/// layout, never the behaviour, so both paths run the exact same wiring against the same stable
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/// widget names - there is no separate "dead" prefab path.
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///
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/// Widgets: channel toggles, an HSV colour picker for albedo, metallic / smoothness / occlusion
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/// sliders, an HSV picker + intensity for emission, and brush size. Attach to an empty GameObject.
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/// </summary>
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[DisallowMultipleComponent]
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public class PaintHud : MonoBehaviour
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{
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[Tooltip("Mode manager driving visibility. Empty = found automatically.")]
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public GameModeManager modeManager;
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[Tooltip("Painter the HUD edits. Empty = the manager's painter, else found automatically.")]
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public MeshPainter painter;
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[Tooltip("Authored panel layout. If set it is instantiated and bound; empty = build the panel in code.")]
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public GameObject layoutPrefab;
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// Stable widget names shared by the code-gen builder, the baked prefab and the binder.
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private const string RootName = "PaintHudPanel";
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private const string PanelAlbedo = "Panel_Albedo";
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private const string PanelMetallicSmoothness = "Panel_MetallicSmoothness";
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private const string PanelOcclusion = "Panel_Occlusion";
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private const string PanelEmission = "Panel_Emission";
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private const string PanelBrushSize = "Panel_BrushSize";
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private const string ToggleAlbedo = "Toggle_Albedo";
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private const string ToggleMetallicSmoothness = "Toggle_MetallicSmoothness";
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private const string ToggleOcclusion = "Toggle_Occlusion";
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private const string ToggleEmission = "Toggle_Emission";
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private const string PickerAlbedo = "Picker_Albedo";
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private const string PickerEmission = "Picker_Emission";
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private const string SliderMetallic = "Slider_Metallic";
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private const string SliderSmoothness = "Slider_Smoothness";
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private const string SliderOcclusion = "Slider_Occlusion";
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private const string SliderEmissionIntensity = "Slider_EmissionIntensity";
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private const string SliderBrushSize = "Slider_BrushSize";
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// Panels made draggable at runtime - grabbable from any non-widget surface (both prefab and code-gen paths).
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private static readonly string[] DraggablePanels =
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{
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PanelAlbedo, PanelMetallicSmoothness, PanelOcclusion, PanelEmission, PanelBrushSize
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};
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private static readonly Color PanelColor = new Color(0.09f, 0.09f, 0.11f, 0.9f);
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private static readonly Color HeaderColor = new Color(0.18f, 0.18f, 0.22f, 1f);
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private static readonly Color Accent = new Color(0.40f, 0.75f, 1f, 1f);
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private static readonly Color BoxColor = new Color(0.20f, 0.20f, 0.24f, 1f);
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private GameObject _panel;
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private Font _font;
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private void Awake()
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{
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if (!modeManager) modeManager = FindFirstObjectByType<GameModeManager>();
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}
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private void OnEnable()
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{
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if (modeManager) modeManager.ModeChanged += OnModeChanged;
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}
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private void OnDisable()
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{
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if (modeManager) modeManager.ModeChanged -= OnModeChanged;
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}
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private void Start()
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{
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if (!painter) painter = modeManager ? modeManager.Painter : null;
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if (!painter) painter = FindFirstObjectByType<MeshPainter>();
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_font = LoadFont();
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EnsureEventSystem();
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EnsureCanvas();
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if (layoutPrefab)
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{
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var go = Instantiate(layoutPrefab, transform);
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go.name = layoutPrefab.name; // strip the "(Clone)" suffix
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_panel = go;
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}
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WirePanel(_panel.transform);
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// Set initial visibility (the manager's first SwitchTo may have fired before this Start).
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OnModeChanged(modeManager ? modeManager.ActiveMode : null);
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}
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private void OnModeChanged(GameMode mode)
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{
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if (_panel) _panel.SetActive(mode is PaintMode);
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}
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private static Font LoadFont()
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{
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var f = Resources.GetBuiltinResource<Font>("LegacyRuntime.ttf");
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if (!f) f = Resources.GetBuiltinResource<Font>("Arial.ttf");
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return f;
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}
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// --- Canvas ---
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private void EnsureCanvas()
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{
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var canvas = GetComponent<Canvas>();
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if (!canvas) canvas = gameObject.AddComponent<Canvas>();
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canvas.renderMode = RenderMode.ScreenSpaceOverlay;
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canvas.sortingOrder = 100;
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var scaler = GetComponent<CanvasScaler>();
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if (!scaler) scaler = gameObject.AddComponent<CanvasScaler>();
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scaler.uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
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scaler.referenceResolution = new Vector2(1920f, 1080f);
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scaler.screenMatchMode = CanvasScaler.ScreenMatchMode.Expand;
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if (!GetComponent<GraphicRaycaster>()) gameObject.AddComponent<GraphicRaycaster>();
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}
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private void EnsureEventSystem()
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{
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if (FindFirstObjectByType<EventSystem>()) return;
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var es = new GameObject("EventSystem", typeof(EventSystem));
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#if ENABLE_INPUT_SYSTEM
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var module = es.AddComponent<InputSystemUIInputModule>();
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if (!module.actionsAsset) module.AssignDefaultActions();
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#else
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es.AddComponent<StandaloneInputModule>();
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#endif
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}
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// --- Wiring (behaviour; shared by the code-gen and prefab paths) ---
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private void WirePanel(Transform panel)
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{
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EnsureFonts(panel); // builtin font references may not survive prefab serialization
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WireToggle(panel, ToggleAlbedo, painter && painter.paintAlbedo, v => { if (painter) painter.paintAlbedo = v; });
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WireToggle(panel, ToggleMetallicSmoothness, painter && painter.paintMetallicSmoothness, v => { if (painter) painter.paintMetallicSmoothness = v; });
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WireToggle(panel, ToggleOcclusion, painter && painter.paintOcclusion, v => { if (painter) painter.paintOcclusion = v; });
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WireToggle(panel, ToggleEmission, painter && painter.paintEmission, v => { if (painter) painter.paintEmission = v; });
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WirePicker(panel, PickerAlbedo, painter ? painter.brushColor : Color.red,
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c => { if (painter) painter.brushColor = new Color(c.r, c.g, c.b, painter.brushColor.a); });
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WireSlider(panel, SliderMetallic, painter ? painter.metallic : 0f, v => { if (painter) painter.metallic = v; });
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WireSlider(panel, SliderSmoothness, painter ? painter.smoothness : 0.5f, v => { if (painter) painter.smoothness = v; });
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WireSlider(panel, SliderOcclusion, painter ? painter.occlusion : 0.5f, v => { if (painter) painter.occlusion = v; });
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WirePicker(panel, PickerEmission, painter ? painter.emissionColor : Color.black,
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c => { if (painter) painter.emissionColor = new Color(c.r, c.g, c.b, painter.emissionColor.a); });
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WireSlider(panel, SliderEmissionIntensity, painter ? painter.emissionIntensity : 1f, v => { if (painter) painter.emissionIntensity = v; });
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WireSlider(panel, SliderBrushSize, painter ? painter.brushSize : 16f, v => { if (painter) painter.brushSize = Mathf.RoundToInt(v); });
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foreach (var name in DraggablePanels)
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MakeDraggable(panel, name);
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}
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/// <summary>
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/// Attaches (idempotently) a <see cref="DraggablePanel"/> to the whole panel so it can be dragged
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/// from any of its non-interactive surface (header, padding, labels, background); the component
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/// ignores presses that start on a widget (toggle, slider, colour picker).
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/// </summary>
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private static void MakeDraggable(Transform root, string panelName)
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{
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var panel = FindDeep(root, panelName) as RectTransform;
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if (!panel) return;
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var drag = panel.GetComponent<DraggablePanel>();
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if (!drag) drag = panel.gameObject.AddComponent<DraggablePanel>();
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drag.target = panel;
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}
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private void EnsureFonts(Transform panel)
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{
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foreach (var t in panel.GetComponentsInChildren<Text>(true))
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if (!t.font) t.font = _font;
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}
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private static void WireToggle(Transform panel, string name, bool value, Action<bool> onChanged)
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{
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var toggle = Find<Toggle>(panel, name);
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if (!toggle) return;
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toggle.isOn = value;
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toggle.onValueChanged.AddListener(v => onChanged(v));
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}
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private static void WireSlider(Transform panel, string name, float value, Action<float> onChanged)
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{
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var cell = FindDeep(panel, name);
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if (!cell) return;
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var slider = cell.GetComponentInChildren<Slider>();
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if (!slider) return;
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var valueRt = cell.Find("Value");
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var valueText = valueRt ? valueRt.GetComponent<TMPro.TMP_Text>() : null;
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bool whole = slider.wholeNumbers;
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slider.value = value;
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Action<float> setText = v =>
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{
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if (valueText) valueText.text = whole ? Mathf.RoundToInt(v).ToString() : v.ToString("0.00");
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};
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setText(slider.value); // show the actual (clamped) value, not the unclamped input
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slider.onValueChanged.AddListener(v => { setText(v); onChanged(v); });
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}
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private void WirePicker(Transform panel, string name, Color color, Action<Color> onChanged)
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{
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var picker = Find<HsvColorPicker>(panel, name);
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if (!picker) return;
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picker.Rebind(); // re-find children, re-assign runtime gradient sprites, re-hook drag relays
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picker.SetColor(color);
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picker.Changed += onChanged;
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}
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private static T Find<T>(Transform panel, string name) where T : Component
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{
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var child = FindDeep(panel, name);
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return child ? child.GetComponent<T>() : null;
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}
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/// <summary>Depth-first search by name (widgets now live nested inside per-channel sub-panels).</summary>
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private static Transform FindDeep(Transform root, string name)
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{
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if (root.name == name) return root;
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for (int i = 0; i < root.childCount; i++)
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{
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var found = FindDeep(root.GetChild(i), name);
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if (found) return found;
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}
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return null;
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}
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// --- Static UI factory (shared with HsvColorPicker) ---
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public static RectTransform NewRect(string name, Transform parent)
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{
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var go = new GameObject(name, typeof(RectTransform));
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go.transform.SetParent(parent, false);
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return (RectTransform)go.transform;
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}
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public static Image AddImage(GameObject go, Color color)
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{
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var img = go.AddComponent<Image>();
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img.color = color;
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return img;
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}
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/// <summary>Adds a full-rect, non-raycasting overlay image (sprite assigned by the caller).</summary>
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public static Image AddOverlay(RectTransform parent, string name)
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{
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var rt = NewRect(name, parent);
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rt.anchorMin = Vector2.zero;
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rt.anchorMax = Vector2.one;
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rt.offsetMin = Vector2.zero;
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rt.offsetMax = Vector2.zero;
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var img = rt.gameObject.AddComponent<Image>();
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img.type = Image.Type.Simple;
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img.raycastTarget = false;
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return img;
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}
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// Cached gradient sprites for the colour picker.
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private static Sprite _satSprite, _valSprite, _hueSprite;
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/// <summary>Horizontal white-out: opaque white (left) -> transparent (right) = saturation.</summary>
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public static Sprite SaturationSprite()
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{
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if (_satSprite) return _satSprite;
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const int n = 64;
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var tex = NewGradientTex(n, 1);
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for (int x = 0; x < n; x++)
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{
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byte a = (byte)Mathf.RoundToInt(255f * (1f - x / (float)(n - 1)));
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tex.SetPixel(x, 0, new Color32(255, 255, 255, a));
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}
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tex.Apply(false);
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_satSprite = ToSprite(tex);
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return _satSprite;
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}
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/// <summary>Vertical black-out: opaque black (bottom) -> transparent (top) = value.</summary>
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public static Sprite ValueSprite()
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{
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if (_valSprite) return _valSprite;
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const int n = 64;
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var tex = NewGradientTex(1, n);
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for (int y = 0; y < n; y++)
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{
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byte a = (byte)Mathf.RoundToInt(255f * (1f - y / (float)(n - 1)));
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tex.SetPixel(0, y, new Color32(0, 0, 0, a));
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}
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tex.Apply(false);
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_valSprite = ToSprite(tex);
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return _valSprite;
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}
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/// <summary>Horizontal full-saturation hue ramp 0..1.</summary>
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public static Sprite HueSprite()
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{
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if (_hueSprite) return _hueSprite;
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const int n = 64;
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var tex = NewGradientTex(n, 1);
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for (int x = 0; x < n; x++)
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tex.SetPixel(x, 0, Color.HSVToRGB(x / (float)(n - 1), 1f, 1f));
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tex.Apply(false);
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_hueSprite = ToSprite(tex);
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return _hueSprite;
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}
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private static Texture2D NewGradientTex(int w, int h)
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{
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return new Texture2D(w, h, TextureFormat.RGBA32, false, false) // sRGB sampling for correct colours
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{
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name = "PaintHud_Gradient",
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wrapMode = TextureWrapMode.Clamp,
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filterMode = FilterMode.Bilinear,
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hideFlags = HideFlags.HideAndDontSave
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};
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}
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private static Sprite ToSprite(Texture2D tex)
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{
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var s = Sprite.Create(tex, new Rect(0f, 0f, tex.width, tex.height), new Vector2(0.5f, 0.5f), 100f);
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s.hideFlags = HideFlags.HideAndDontSave;
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return s;
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}
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}
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