From 801c48fba87234d512bd155c56f08e6f8f382938 Mon Sep 17 00:00:00 2001
From: Acruid <shatter66@gmail.com>
Date: Thu, 6 Aug 2020 22:02:13 -0700
Subject: [PATCH] Added a turf helper function IsBlockedTurf() for Ike.

---
 Content.Shared/Maps/TurfHelpers.cs | 56 ++++++++++++++++++++++++++++++
 RobustToolbox                      |  2 +-
 2 files changed, 57 insertions(+), 1 deletion(-)
 create mode 100644 Content.Shared/Maps/TurfHelpers.cs

diff --git a/Content.Shared/Maps/TurfHelpers.cs b/Content.Shared/Maps/TurfHelpers.cs
new file mode 100644
index 0000000000..549a1517dd
--- /dev/null
+++ b/Content.Shared/Maps/TurfHelpers.cs
@@ -0,0 +1,56 @@
+using Content.Shared.Physics;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.Interfaces.Physics;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
+
+namespace Content.Shared.Maps
+{
+    public static class TurfHelpers
+    {
+        /// <summary>
+        /// Checks if a turf has something dense on it.
+        /// </summary>
+        public static bool IsBlockedTurf(this TileRef turf, bool filterMobs)
+        {
+            var physics = IoCManager.Resolve<IPhysicsManager>();
+
+            var worldBox = GetWorldTileBox(turf);
+
+            var query = physics.GetCollidingEntities(turf.MapIndex, in worldBox);
+
+            foreach (var body in query)
+            {
+                if (body.CanCollide && body.Hard && (body.CollisionLayer & (int) CollisionGroup.Impassable) != 0)
+                    return false;
+
+                if (filterMobs && (body.CollisionLayer & (int) CollisionGroup.MobMask) != 0)
+                    return false;
+            }
+
+            return true;
+        }
+
+        /// <summary>
+        /// Creates a box the size of a tile, at the same position in the world as the tile.
+        /// </summary>
+        private static Box2 GetWorldTileBox(TileRef turf)
+        {
+            var map = IoCManager.Resolve<IMapManager>();
+            var tileGrid = map.GetGrid(turf.GridIndex);
+            var tileBox = Box2.UnitCentered.Scale(tileGrid.TileSize);
+            return tileBox.Translated(tileGrid.GridTileToWorldPos(turf.GridIndices));
+        }
+
+        /// <summary>
+        /// Creates a box the size of a tile.
+        /// </summary>
+        private static Box2 GetTileBox(this TileRef turf)
+        {
+            var map = IoCManager.Resolve<IMapManager>();
+            var tileGrid = map.GetGrid(turf.GridIndex);
+            return Box2.UnitCentered.Scale(tileGrid.TileSize);
+        }
+    }
+}
diff --git a/RobustToolbox b/RobustToolbox
index e5ae2182b0..5d2e3a4c61 160000
--- a/RobustToolbox
+++ b/RobustToolbox
@@ -1 +1 @@
-Subproject commit e5ae2182b0c31cc065c60b1ebc540dca0c73adf5
+Subproject commit 5d2e3a4c6158e1960d1ac25669385937932e68b8