Add ambient light in graphics options

modules/client_options/graphics.otui

@@ -95,3 +95,22 @@ Panel
     minimum: 1
     maximum: 61
 
+  Label
+    id: ambientLightLabel
+    anchors.left: parent.left
+    anchors.right: parent.right
+    anchors.top: prev.bottom
+    margin-top: 6
+    @onSetup: |
+      local value = Options.getOption('ambientLight')
+      self:setText(tr('Ambient light: %s%%', value))
+
+  FrameRateScrollbar
+    id: ambientLight
+    anchors.left: parent.left
+    anchors.right: parent.right
+    anchors.top: prev.bottom
+    margin-top: 3
+    minimum: 0
+    maximum: 100
+

modules/client_options/options.lua

@@ -21,6 +21,7 @@ local defaultOptions = {
   showLeftPanel = false,
   foregroundFrameRate = 61,
   backgroundFrameRate = 201,
+  ambientLight = 15,
   painterEngine = 0
 }
 
@@ -177,6 +178,17 @@ function Options.setOption(key, value)
       graphicsPanel:getChildById('foregroundFrameRateLabel'):setText(tr('Interface framerate limit: %s', text))
     end
     g_app.setForegroundPaneMaxFps(value)
+  elseif key == 'ambientLight' then
+    addEvent(function()
+      local map = rootWidget:recursiveGetChildById('gameMapPanel')
+      if graphicsPanel then
+        graphicsPanel:getChildById('ambientLightLabel'):setText(tr('Ambient light: %s%%', value))
+      end
+      if map then
+        map:setMinimumAmbientLight(value/100)
+        map:setDrawLights(value < 100)
+      end
+    end)
   elseif key == 'painterEngine' then
     g_graphics.selectPainterEngine(value)
   end

modules/client_options/options.otui

@@ -17,7 +17,7 @@ OptionCheckBox < CheckBox
 MainWindow
   id: optionsWindow
   !text: tr('Options')
-  size: 350 290
+  size: 350 310
 
   @onEnter: Options.hide()
   @onEscape: Options.hide()

src/otclient/mapview.cpp

@@ -658,6 +658,8 @@ void MapView::setDrawMinimapColors(bool enable)
 
 void MapView::setDrawLights(bool enable)
 {
+    if(enable == m_drawLights)
+        return;
     if(enable)
         m_lightView = LightViewPtr(new LightView);
     else