add: FootSteps

Content.Client/_White/FootPrint/FootPrintsVisualizerSystem.cs

@@ -0,0 +1,84 @@
+using Content.Shared._White.FootPrint;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Shared.Random;
+
+namespace Content.Client._White.FootPrint;
+
+public sealed class FootPrintsVisualizerSystem : VisualizerSystem<FootPrintComponent>
+{
+    [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
+    [Dependency] private readonly IRobustRandom _random = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<FootPrintComponent, ComponentInit>(OnInitialized);
+        SubscribeLocalEvent<FootPrintComponent, ComponentShutdown>(OnShutdown);
+    }
+
+    private void OnInitialized(EntityUid uid, FootPrintComponent comp, ComponentInit args)
+    {
+        if (!TryComp<SpriteComponent>(uid, out var sprite))
+            return;
+
+        sprite.LayerMapReserveBlank(FootPrintVisualLayers.Print);
+        UpdateAppearance(uid, comp, sprite);
+    }
+
+    private void OnShutdown(EntityUid uid, FootPrintComponent comp, ComponentShutdown args)
+    {
+        if (TryComp<SpriteComponent>(uid, out var sprite) &&
+            sprite.LayerMapTryGet(FootPrintVisualLayers.Print, out var layer))
+        {
+            sprite.RemoveLayer(layer);
+        }
+    }
+
+    private void UpdateAppearance(EntityUid uid, FootPrintComponent component, SpriteComponent sprite)
+    {
+        if (!sprite.LayerMapTryGet(FootPrintVisualLayers.Print, out var layer)
+            || !TryComp<FootPrintsComponent>(component.PrintOwner, out var printsComponent)
+            || !TryComp<AppearanceComponent>(uid, out var appearance))
+            return;
+
+        if (_appearance.TryGetData<FootPrintVisuals>(uid, FootPrintVisualState.State, out var printVisuals, appearance))
+        {
+            switch (printVisuals)
+            {
+                case FootPrintVisuals.BareFootPrint:
+                    sprite.LayerSetState(layer,
+                            printsComponent.RightStep
+                            ? new RSI.StateId(printsComponent.RightBarePrint)
+                            : new RSI.StateId(printsComponent.LeftBarePrint),
+                        printsComponent.RsiPath);
+                    break;
+                case FootPrintVisuals.ShoesPrint:
+                    sprite.LayerSetState(layer, new RSI.StateId(printsComponent.ShoesPrint), printsComponent.RsiPath);
+                    break;
+                case FootPrintVisuals.SuitPrint:
+                    sprite.LayerSetState(layer, new RSI.StateId(printsComponent.SuitPrint), printsComponent.RsiPath);
+                    break;
+                case FootPrintVisuals.Dragging:
+                    sprite.LayerSetState(layer, new RSI.StateId(_random.Pick(printsComponent.DraggingPrint)), printsComponent.RsiPath);
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException($"Unknown {printVisuals} parameter.");
+            }
+        }
+
+        if (!_appearance.TryGetData<Color>(uid, FootPrintVisualState.Color, out var printColor, appearance))
+            return;
+
+        sprite.LayerSetColor(layer, printColor);
+    }
+
+    protected override void OnAppearanceChange (EntityUid uid, FootPrintComponent component, ref AppearanceChangeEvent args)
+    {
+        if (args.Sprite is not { } sprite)
+            return;
+
+        UpdateAppearance(uid, component, sprite);
+    }
+}

Content.Server/_White/FootPrint/FootPrintsSystem.cs

@@ -0,0 +1,131 @@
+using Content.Server.Atmos.Components;
+using Content.Shared.Inventory;
+using Content.Shared.Mobs;
+using Content.Shared.Mobs.Components;
+using Content.Shared._White.FootPrint;
+using Content.Shared.Standing;
+using Content.Shared.Chemistry.Components.SolutionManager;
+using Content.Shared.Chemistry.EntitySystems;
+using Robust.Shared.Map;
+using Robust.Shared.Random;
+
+namespace Content.Server._White.FootPrint;
+
+public sealed class FootPrintsSystem : EntitySystem
+{
+    [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly InventorySystem _inventory = default!;
+    [Dependency] private readonly IMapManager _map = default!;
+
+    [Dependency] private readonly SharedSolutionContainerSystem _solution = default!;
+    [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
+    [Dependency] private readonly SharedTransformSystem _transform = default!;
+
+    private EntityQuery<TransformComponent> _transformQuery;
+    private EntityQuery<MobThresholdsComponent> _mobThresholdQuery;
+    private EntityQuery<AppearanceComponent> _appearanceQuery;
+    private EntityQuery<LayingDownComponent> _layingQuery;
+
+   public override void Initialize()
+   {
+       base.Initialize();
+
+       _transformQuery = GetEntityQuery<TransformComponent>();
+       _mobThresholdQuery = GetEntityQuery<MobThresholdsComponent>();
+       _appearanceQuery = GetEntityQuery<AppearanceComponent>();
+       _layingQuery = GetEntityQuery<LayingDownComponent>();
+
+       SubscribeLocalEvent<FootPrintsComponent, ComponentStartup>(OnStartupComponent);
+       SubscribeLocalEvent<FootPrintsComponent, MoveEvent>(OnMove);
+   }
+
+    private void OnStartupComponent(EntityUid uid, FootPrintsComponent comp, ComponentStartup args)
+    {
+        comp.StepSize += _random.NextFloat(-0.05f, 0.05f);
+    }
+
+    private void OnMove(EntityUid uid, FootPrintsComponent comp, ref MoveEvent args)
+    {
+        if (comp.PrintsColor.A <= 0f
+            || !_transformQuery.TryComp(uid, out var transform)
+            || !_mobThresholdQuery.TryComp(uid, out var mobThreshHolds)
+            || !_map.TryFindGridAt(_transform.GetMapCoordinates((uid, transform)), out var gridUid, out _))
+            return;
+
+        var dragging = mobThreshHolds.CurrentThresholdState is MobState.Critical or MobState.Dead || _layingQuery.TryComp(uid, out var laying) && laying.IsCrawlingUnder;
+        var distance = (transform.LocalPosition - comp.StepPos).Length();
+        var stepSize = dragging ? comp.DragSize : comp.StepSize;
+
+        if (!(distance > stepSize))
+            return;
+
+        comp.RightStep = !comp.RightStep;
+
+        var entity = Spawn(comp.StepProtoId, CalcCoords(gridUid, comp, transform, dragging));
+        var footPrintComponent = Comp<FootPrintComponent>(entity); // There's NO way there's no footprint commponent in a FOOTPRINT
+
+        footPrintComponent.PrintOwner = uid;
+        Dirty(entity, footPrintComponent);
+
+        if (_appearanceQuery.TryComp(entity, out var appearance))
+        {
+            _appearance.SetData(entity, FootPrintVisualState.State, PickState(uid, dragging), appearance);
+            _appearance.SetData(entity, FootPrintVisualState.Color, comp.PrintsColor, appearance);
+        }
+
+        if (!_transformQuery.TryComp(entity, out var stepTransform))
+            return;
+
+        stepTransform.LocalRotation = dragging
+            ? (transform.LocalPosition - comp.StepPos).ToAngle() + Angle.FromDegrees(-90f)
+            : transform.LocalRotation + Angle.FromDegrees(180f);
+
+        comp.PrintsColor = comp.PrintsColor.WithAlpha(ReduceAlpha(comp.PrintsColor.A, comp.ColorReduceAlpha));
+        comp.StepPos = transform.LocalPosition;
+
+        if (!TryComp<SolutionContainerManagerComponent>(entity, out var solutionContainer)
+            || !_solution.ResolveSolution((entity, solutionContainer), footPrintComponent.SolutionName, ref footPrintComponent.Solution, out var solution)
+            || string.IsNullOrWhiteSpace(comp.ReagentToTransfer) || solution.Volume >= 1)
+            return;
+
+        _solution.TryAddReagent(footPrintComponent.Solution.Value, comp.ReagentToTransfer, 1, out _);
+    }
+
+    private EntityCoordinates CalcCoords(EntityUid uid, FootPrintsComponent comp, TransformComponent transform, bool state)
+    {
+        if (state)
+            return new EntityCoordinates(uid, transform.LocalPosition);
+
+        var offset = comp.RightStep
+            ? new Angle(Angle.FromDegrees(180f) + transform.LocalRotation).RotateVec(comp.OffsetPrint)
+            : new Angle(transform.LocalRotation).RotateVec(comp.OffsetPrint);
+
+        return new EntityCoordinates(uid, transform.LocalPosition + offset);
+    }
+
+    private FootPrintVisuals PickState(EntityUid uid, bool dragging)
+    {
+        var state = FootPrintVisuals.BareFootPrint;
+
+        if (_inventory.TryGetSlotEntity(uid, "shoes", out _))
+            state = FootPrintVisuals.ShoesPrint;
+
+        if (_inventory.TryGetSlotEntity(uid, "outerClothing", out var suit) && TryComp<PressureProtectionComponent>(suit, out _))
+            state = FootPrintVisuals.SuitPrint;
+
+        if (dragging)
+            state = FootPrintVisuals.Dragging;
+
+        return state;
+    }
+
+    private float ReduceAlpha(float alpha, float reductionAmount)
+    {
+        if (alpha - reductionAmount > 0f)
+            alpha -= reductionAmount;
+        else
+            alpha = 0f;
+
+        return alpha;
+    }
+}

Content.Server/_White/FootPrint/PuddleFootPrintsSystem.cs

@@ -0,0 +1,53 @@
+using System.Linq;
+using Content.Shared._White.FootPrint;
+using Content.Shared.Chemistry.Components.SolutionManager;
+using Content.Shared.Chemistry.EntitySystems;
+using Content.Shared.Fluids;
+using Content.Shared.Fluids.Components;
+using Robust.Shared.Physics.Events;
+
+namespace Content.Server._White.FootPrint;
+
+public sealed class PuddleFootPrintsSystem : EntitySystem
+{
+    [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
+    [Dependency] private readonly SharedSolutionContainerSystem _solutionContainer = default!;
+
+   public override void Initialize()
+   {
+       base.Initialize();
+       SubscribeLocalEvent<PuddleFootPrintsComponent, EndCollideEvent>(OnStepTrigger);
+   }
+
+    private void OnStepTrigger(EntityUid uid, PuddleFootPrintsComponent comp, ref EndCollideEvent args)
+    {
+        if (!TryComp<AppearanceComponent>(uid, out var appearance)
+            || !TryComp<PuddleComponent>(uid, out var puddle)
+            || !TryComp<FootPrintsComponent>(args.OtherEntity, out var tripper)
+            || !TryComp<SolutionContainerManagerComponent>(uid, out var solutionManager)
+            ||!_solutionContainer.ResolveSolution((uid, solutionManager), puddle.SolutionName, ref puddle.Solution, out var solutions))
+            return;
+
+        // alles gut!
+        var totalSolutionQuantity = solutions.Contents.Sum(sol => (float)sol.Quantity);
+        var waterQuantity = (from sol in solutions.Contents where sol.Reagent.Prototype == "Water" select (float) sol.Quantity).FirstOrDefault();
+
+        if (waterQuantity / (totalSolutionQuantity / 100f) > comp.OffPercent || solutions.Contents.Count <= 0)
+            return;
+
+        tripper.ReagentToTransfer =
+            solutions.Contents.Aggregate((l, r) => l.Quantity > r.Quantity ? l : r).Reagent.Prototype;
+
+        if (_appearance.TryGetData(uid, PuddleVisuals.SolutionColor, out var color, appearance)
+            && _appearance.TryGetData(uid, PuddleVisuals.CurrentVolume, out var volume, appearance))
+            AddColor((Color)color, (float)volume * comp.SizeRatio, tripper);
+
+        _solutionContainer.RemoveEachReagent(puddle.Solution.Value, 1);
+    }
+
+    private void AddColor(Color col, float quantity, FootPrintsComponent comp)
+    {
+        comp.PrintsColor = comp.ColorQuantity == 0f ? col : Color.InterpolateBetween(comp.PrintsColor, col, 0.2f);
+        comp.ColorQuantity += quantity;
+    }
+}

Content.Shared/_White/Footprint/FootPrintComponent.cs

@@ -0,0 +1,23 @@
+using Content.Shared.Chemistry.Components;
+using Robust.Shared.GameStates;
+
+namespace Content.Shared._White.FootPrint;
+
+/// <summary>
+/// This is used for marking footsteps, handling footprint drawing.
+/// </summary>
+[RegisterComponent, NetworkedComponent, AutoGenerateComponentState]
+public sealed partial class FootPrintComponent : Component
+{
+    /// <summary>
+    /// Owner (with <see cref="FootPrintsComponent"/>) of a print (this component).
+    /// </summary>
+    [AutoNetworkedField]
+    public EntityUid PrintOwner;
+
+    [DataField]
+    public string SolutionName = "step";
+
+    [DataField]
+    public Entity<SolutionComponent>? Solution;
+}

Content.Shared/_White/Footprint/FootPrintVisuals.cs

@@ -0,0 +1,25 @@
+using Robust.Shared.Serialization;
+
+namespace Content.Shared._White.FootPrint;
+
+[Serializable, NetSerializable]
+public enum FootPrintVisuals : byte
+{
+    BareFootPrint,
+    ShoesPrint,
+    SuitPrint,
+    Dragging
+}
+
+[Serializable, NetSerializable]
+public enum FootPrintVisualState : byte
+{
+    State,
+    Color
+}
+
+[Serializable, NetSerializable]
+public enum FootPrintVisualLayers : byte
+{
+    Print
+}

Content.Shared/_White/Footprint/FootPrintsComponent.cs

@@ -0,0 +1,64 @@
+using System.Numerics;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Utility;
+
+namespace Content.Shared._White.FootPrint;
+
+[RegisterComponent]
+public sealed partial class FootPrintsComponent : Component
+{
+    [ViewVariables(VVAccess.ReadOnly), DataField]
+    public ResPath RsiPath = new("/Textures/_White/Effects/footprints.rsi");
+
+    // all of those are set as a layer
+    [ViewVariables(VVAccess.ReadOnly), DataField]
+    public string LeftBarePrint = "footprint-left-bare-human";
+
+    [ViewVariables(VVAccess.ReadOnly), DataField]
+    public string RightBarePrint = "footprint-right-bare-human";
+
+    [ViewVariables(VVAccess.ReadOnly), DataField]
+    public string ShoesPrint = "footprint-shoes";
+
+    [ViewVariables(VVAccess.ReadOnly), DataField]
+    public string SuitPrint = "footprint-suit";
+
+    [ViewVariables(VVAccess.ReadOnly), DataField]
+    public string[] DraggingPrint =
+    [
+        "dragging-1",
+        "dragging-2",
+        "dragging-3",
+        "dragging-4",
+        "dragging-5",
+    ];
+    // yea, those
+
+    [ViewVariables(VVAccess.ReadOnly), DataField]
+    public EntProtoId<FootPrintComponent> StepProtoId = "Footstep";
+
+    [ViewVariables(VVAccess.ReadOnly), DataField]
+    public Color PrintsColor = Color.FromHex("#00000000");
+
+    [DataField]
+    public float StepSize = 0.7f;
+
+    [DataField]
+    public float DragSize = 0.5f;
+
+    [DataField]
+    public float ColorQuantity;
+
+    [DataField]
+    public float ColorReduceAlpha = 0.1f;
+
+    [DataField]
+    public string? ReagentToTransfer;
+
+    [DataField]
+    public Vector2 OffsetPrint = new(0.1f, 0f);
+
+    public bool RightStep = true;
+
+    public Vector2 StepPos = Vector2.Zero;
+}

Content.Shared/_White/Footprint/PuddleFootPrintsComponent.cs

@@ -0,0 +1,11 @@
+namespace Content.Shared._White.FootPrint;
+
+[RegisterComponent]
+public sealed partial class PuddleFootPrintsComponent : Component
+{
+    [ViewVariables(VVAccess.ReadWrite)]
+    public float SizeRatio = 0.2f;
+
+    [ViewVariables(VVAccess.ReadWrite)]
+    public float OffPercent = 80f;
+}