Chameleon clothing (#8444)

Co-authored-by: Moony <moonheart08@users.noreply.github.com>
Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Server/Clothing/Systems/ChameleonClothingSystem.cs

@@ -0,0 +1,98 @@
+using Content.Shared.Clothing.Components;
+using Content.Shared.Clothing.EntitySystems;
+using Content.Shared.Verbs;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameStates;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.Clothing.Systems;
+
+public sealed class ChameleonClothingSystem : SharedChameleonClothingSystem
+{
+    [Dependency] private readonly IPrototypeManager _proto = default!;
+    [Dependency] private readonly UserInterfaceSystem _uiSystem = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<ChameleonClothingComponent, ComponentInit>(OnInit);
+        SubscribeLocalEvent<ChameleonClothingComponent, ComponentGetState>(GetState);
+        SubscribeLocalEvent<ChameleonClothingComponent, GetVerbsEvent<InteractionVerb>>(OnVerb);
+        SubscribeLocalEvent<ChameleonClothingComponent, ChameleonPrototypeSelectedMessage>(OnSelected);
+    }
+
+    private void OnInit(EntityUid uid, ChameleonClothingComponent component, ComponentInit args)
+    {
+        SetSelectedPrototype(uid, component.SelectedId, true, component);
+    }
+
+    private void GetState(EntityUid uid, ChameleonClothingComponent component, ref ComponentGetState args)
+    {
+        args.State = new ChameleonClothingComponentState
+        {
+            SelectedId = component.SelectedId
+        };
+    }
+
+    private void OnVerb(EntityUid uid, ChameleonClothingComponent component, GetVerbsEvent<InteractionVerb> args)
+    {
+        if (!args.CanAccess || !args.CanInteract)
+            return;
+
+        args.Verbs.Add(new InteractionVerb()
+        {
+            Text = Loc.GetString("chameleon-component-verb-text"),
+            IconTexture = "/Textures/Interface/VerbIcons/settings.svg.192dpi.png",
+            Act = () => TryOpenUi(uid, args.User, component)
+        });
+    }
+
+    private void OnSelected(EntityUid uid, ChameleonClothingComponent component, ChameleonPrototypeSelectedMessage args)
+    {
+        SetSelectedPrototype(uid, args.SelectedId, component: component);
+    }
+
+    private void TryOpenUi(EntityUid uid, EntityUid user, ChameleonClothingComponent? component = null)
+    {
+        if (!Resolve(uid, ref component))
+            return;
+        if (!TryComp(user, out ActorComponent? actor))
+            return;
+        _uiSystem.TryToggleUi(uid, ChameleonUiKey.Key, actor.PlayerSession);
+    }
+
+    private void UpdateUi(EntityUid uid, ChameleonClothingComponent? component = null)
+    {
+        if (!Resolve(uid, ref component))
+            return;
+
+        var state = new ChameleonBoundUserInterfaceState(component.Slot, component.SelectedId);
+        _uiSystem.TrySetUiState(uid, ChameleonUiKey.Key, state);
+    }
+
+    /// <summary>
+    ///     Change chameleon items name, description and sprite to mimic other entity prototype.
+    /// </summary>
+    public void SetSelectedPrototype(EntityUid uid, string? protoId, bool forceUpdate = false,
+        ChameleonClothingComponent? component = null)
+    {
+        if (!Resolve(uid, ref component, false))
+            return;
+
+        // check that wasn't already selected
+        // forceUpdate on component init ignores this check
+        if (component.SelectedId == protoId && !forceUpdate)
+            return;
+
+        // make sure that it is valid change
+        if (string.IsNullOrEmpty(protoId) || !_proto.TryIndex(protoId, out EntityPrototype? proto))
+            return;
+        if (!IsValidTarget(proto, component.Slot))
+            return;
+        component.SelectedId = protoId;
+
+        UpdateVisuals(uid, component);
+        UpdateUi(uid, component);
+        Dirty(component);
+    }
+}