Station maps (#13027)

Content.Client/UserInterface/Controls/MapGridControl.cs

@@ -0,0 +1,79 @@
+using Robust.Client.Graphics;
+using Robust.Client.UserInterface;
+using Robust.Shared.Timing;
+
+namespace Content.Client.UserInterface.Controls;
+
+/// <summary>
+/// Handles generic grid-drawing data, with zoom and dragging.
+/// </summary>
+public abstract class MapGridControl : Control
+{
+    [Dependency] protected readonly IGameTiming Timing = default!;
+
+    protected const float ScrollSensitivity = 8f;
+
+    /// <summary>
+    /// UI pixel radius.
+    /// </summary>
+    public const int UIDisplayRadius = 320;
+    protected const int MinimapMargin = 4;
+
+    protected float WorldMinRange;
+    protected float WorldMaxRange;
+    public float WorldRange;
+
+    /// <summary>
+    /// We'll lerp between the radarrange and actual range
+    /// </summary>
+    protected float ActualRadarRange;
+
+    /// <summary>
+    /// Controls the maximum distance that will display.
+    /// </summary>
+    public float MaxRadarRange { get; private set; } = 256f * 10f;
+
+    protected int MidPoint => SizeFull / 2;
+    protected int SizeFull => (int) ((UIDisplayRadius + MinimapMargin) * 2 * UIScale);
+    protected int ScaledMinimapRadius => (int) (UIDisplayRadius * UIScale);
+    protected float MinimapScale => WorldRange != 0 ? ScaledMinimapRadius / WorldRange : 0f;
+
+    public event Action<float>? WorldRangeChanged;
+
+    public MapGridControl(float minRange, float maxRange, float range)
+    {
+        IoCManager.InjectDependencies(this);
+        SetSize = (SizeFull, SizeFull);
+        RectClipContent = true;
+        MouseFilter = MouseFilterMode.Stop;
+        ActualRadarRange = WorldRange;
+        WorldMinRange = minRange;
+        WorldMaxRange = maxRange;
+        WorldRange = range;
+        ActualRadarRange = range;
+    }
+
+    protected override void MouseWheel(GUIMouseWheelEventArgs args)
+    {
+        base.MouseWheel(args);
+        AddRadarRange(-args.Delta.Y * 1f / ScrollSensitivity * ActualRadarRange);
+    }
+
+    public void AddRadarRange(float value)
+    {
+        ActualRadarRange = Math.Clamp(ActualRadarRange + value, WorldMinRange, WorldMaxRange);
+    }
+
+    protected override void Draw(DrawingHandleScreen handle)
+    {
+        base.Draw(handle);
+        if (!ActualRadarRange.Equals(WorldRange))
+        {
+            var diff = ActualRadarRange - WorldRange;
+            const float lerpRate = 10f;
+
+            WorldRange += (float) Math.Clamp(diff, -lerpRate * MathF.Abs(diff) * Timing.FrameTime.TotalSeconds, lerpRate * MathF.Abs(diff) * Timing.FrameTime.TotalSeconds);
+            WorldRangeChanged?.Invoke(WorldRange);
+        }
+    }
+}