From 4c888e9b2ac2c5b9c3f3d85cad84ee7cf626f3ea Mon Sep 17 00:00:00 2001
From: Oen44 <lach@includespark.eu>
Date: Thu, 18 Jan 2024 16:34:17 +0100
Subject: [PATCH] Draw floor shadow underground

---
 modules/client_options/graphics.otui | 4 ++++
 modules/client_options/options.lua   | 9 ++++++++-
 modules/gamelib/const.lua            | 1 +
 src/client/const.h                   | 1 +
 src/client/mapview.cpp               | 5 +++++
 src/client/mapview.h                 | 2 ++
 6 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/modules/client_options/graphics.otui b/modules/client_options/graphics.otui
index 730bf26..e05f2cb 100644
--- a/modules/client_options/graphics.otui
+++ b/modules/client_options/graphics.otui
@@ -35,6 +35,10 @@ OptionPanel
     id: antialiasing
     !text: tr('Antialiasing')
 
+  OptionCheckBox
+    id: floorShadow
+    !text: tr('Floor Shadow')
+
   Label
     margin-top: 12
     id: optimizationLevelLabel
diff --git a/modules/client_options/options.lua b/modules/client_options/options.lua
index 0060d57..4f2cbd8 100644
--- a/modules/client_options/options.lua
+++ b/modules/client_options/options.lua
@@ -66,7 +66,8 @@ local defaultOptions = {
 
   profile = 1,
   
-  antialiasing = true
+  antialiasing = true,
+  floorShadow = true
 }
 
 local optionsWindow
@@ -350,6 +351,12 @@ function setOption(key, value, force)
     generalPanel:getChildById('walkCtrlTurnDelayLabel'):setText(tr('Walk delay after ctrl turn: %s ms', value))  
   elseif key == "antialiasing" then
     g_app.setSmooth(value)
+  elseif key == "floorShadow" then
+    if value then
+      g_game.enableFeature(GameDrawFloorShadow)
+    else
+      g_game.disableFeature(GameDrawFloorShadow)
+    end
   end
 
   -- change value for keybind updates
diff --git a/modules/gamelib/const.lua b/modules/gamelib/const.lua
index e7a0486..92f9e4f 100644
--- a/modules/gamelib/const.lua
+++ b/modules/gamelib/const.lua
@@ -213,6 +213,7 @@ GameDontMergeAnimatedText = 124
 GameMissionId = 125
 GameItemCustomAttributes = 126
 GameAnimatedTextCustomFont = 127
+GameDrawFloorShadow = 128
 
 LastGameFeature = 130
         
diff --git a/src/client/const.h b/src/client/const.h
index bb23e1b..da9d92d 100644
--- a/src/client/const.h
+++ b/src/client/const.h
@@ -488,6 +488,7 @@ namespace Otc
         GameMissionId = 125,
         GameItemCustomAttributes = 126,
         GameAnimatedTextCustomFont = 127,
+        GameDrawFloorShadow = 128,
 
         LastGameFeature = 130
     };
diff --git a/src/client/mapview.cpp b/src/client/mapview.cpp
index 31d766f..402044e 100644
--- a/src/client/mapview.cpp
+++ b/src/client/mapview.cpp
@@ -143,6 +143,11 @@ void MapView::drawMapBackground(const Rect& rect, const TilePtr& crosshairTile)
             if (fading == 0) break;
         }
 
+        if (g_game.getFeature(Otc::GameDrawFloorShadow)) {
+            if (cameraPosition.z >= Otc::UNDERGROUND_FLOOR && cameraPosition.z == z) {
+                g_drawQueue->addFilledRect(srcRect, m_floorShadow);
+            }
+        }
         size_t floorStart = g_drawQueue->size();
         drawFloor(z, cameraPosition, crosshairTile);
 
diff --git a/src/client/mapview.h b/src/client/mapview.h
index 8cd91c7..55c7386 100644
--- a/src/client/mapview.h
+++ b/src/client/mapview.h
@@ -166,6 +166,8 @@ class MapView : public LuaObject
     float m_minimumAmbientLight;
     std::unique_ptr<LightView> m_lightView;
     TexturePtr m_lightTexture;
+
+    Color m_floorShadow = Color(0.0f, 0.0f, 0.0f, 0.5f);
 };
 
 #endif