From dd45af5a9f483ffc8ceb1602969dc5d81541cb32 Mon Sep 17 00:00:00 2001
From: Joonas Rikkonen <poe.regalis@gmail.com>
Date: Thu, 11 Apr 2019 18:25:01 +0300
Subject: [PATCH] (20f37d9c7) Option to toggle structure drop shadows and edit
 the position of the shadow

---
 .../BarotraumaClient/Source/Map/Structure.cs  | 21 ++++++++++---------
 .../BarotraumaShared/Source/Map/Structure.cs  | 21 +++++++++++++++++++
 2 files changed, 32 insertions(+), 10 deletions(-)

diff --git a/Barotrauma/BarotraumaClient/Source/Map/Structure.cs b/Barotrauma/BarotraumaClient/Source/Map/Structure.cs
index 69c09b594..6bf1f97f8 100644
--- a/Barotrauma/BarotraumaClient/Source/Map/Structure.cs
+++ b/Barotrauma/BarotraumaClient/Source/Map/Structure.cs
@@ -215,23 +215,24 @@ namespace Barotrauma
             {
                 if (Prefab.BackgroundSprite != null)
                 {
-                    bool drawDropShadow = Submarine != null && HasBody;
                     Vector2 dropShadowOffset = Vector2.Zero;
-                    if (drawDropShadow)
+                    if (UseDropShadow)
                     {
-                        dropShadowOffset = Submarine.HiddenSubPosition - Position;
-                        if (dropShadowOffset != Vector2.Zero)
+                        dropShadowOffset = DropShadowOffset;
+                        if (dropShadowOffset == Vector2.Zero)
                         {
-                            if (IsHorizontal)
+                            if (Submarine == null)
                             {
-                                dropShadowOffset = new Vector2(0.0f, Math.Sign(dropShadowOffset.Y) * 10.0f);
+                                dropShadowOffset = Vector2.UnitY * 10.0f;
                             }
                             else
                             {
-                                dropShadowOffset = new Vector2(Math.Sign(dropShadowOffset.X) * 10.0f, 0.0f);
+                                dropShadowOffset = IsHorizontal ? 
+                                    new Vector2(0.0f, Math.Sign(Submarine.HiddenSubPosition.Y - Position.Y) * 10.0f) : 
+                                    new Vector2(Math.Sign(Submarine.HiddenSubPosition.X - Position.X) * 10.0f, 0.0f);
                             }
-                            dropShadowOffset.Y = -dropShadowOffset.Y;
                         }
+                        dropShadowOffset.Y = -dropShadowOffset.Y;
                     }
 
                     if (DrawTiled)
@@ -251,7 +252,7 @@ namespace Barotrauma
                             textureScale: TextureScale * Scale,
                             startOffset: backGroundOffset);
 
-                        if (drawDropShadow)
+                        if (UseDropShadow)
                         {
                             Prefab.BackgroundSprite.DrawTiled(
                                 spriteBatch,
@@ -276,7 +277,7 @@ namespace Barotrauma
                             rotate: 0,
                             spriteEffect: SpriteEffects);
 
-                        if (drawDropShadow)
+                        if (UseDropShadow)
                         {
                             Prefab.BackgroundSprite.Draw(
                                 spriteBatch,
diff --git a/Barotrauma/BarotraumaShared/Source/Map/Structure.cs b/Barotrauma/BarotraumaShared/Source/Map/Structure.cs
index 4ae545ab1..b4829678a 100644
--- a/Barotrauma/BarotraumaShared/Source/Map/Structure.cs
+++ b/Barotrauma/BarotraumaShared/Source/Map/Structure.cs
@@ -144,6 +144,20 @@ namespace Barotrauma
             get { return spriteColor; }
             set { spriteColor = value; }
         }
+        
+        [Editable, Serialize(false, true)]
+        public bool UseDropShadow
+        {
+            get;
+            private set;
+        }
+
+        [Serialize("0,0", true), Editable(ToolTip = "The position of the drop shadow relative to the structure. If set to zero, the shadow is positioned automatically so that it points towards the sub's center of mass.")]
+        public Vector2 DropShadowOffset
+        {
+            get;
+            private set;
+        }
 
         public override Rectangle Rect
         {
@@ -1139,6 +1153,13 @@ namespace Barotrauma
             if (element.GetAttributeBool("flippedx", false)) s.FlipX(false);
             if (element.GetAttributeBool("flippedy", false)) s.FlipY(false);
             SerializableProperty.DeserializeProperties(s, element);
+
+            //structures with a body drop a shadow by default
+            if (element.Attribute("usedropshadow") == null)
+            {
+                s.UseDropShadow = prefab.Body;
+            }
+
             return s;
         }