optimize light radius, add fake ambient lighting and enable AO

Source/Game/Level/Q3MapImporter.cs

@@ -722,6 +722,8 @@ namespace Game
 
         private void ParseLight(MapEntity entity, Actor worldSpawnActor, ref int lightIndex)
         {
+            const bool lightsUseInverseSquaredFalloff = true;
+
             //Console.Print("light");
             PointLight light = worldSpawnActor.AddChild<PointLight>();
             light.Name = "Light_" + lightIndex;
@@ -746,6 +748,24 @@ namespace Game
             light.ShadowsDistance = 2000f * 1f;
 
 
+            if (lightsUseInverseSquaredFalloff)
+            {
+                if (true)
+                {
+                    light.Radius *= 0.5f;
+                    light.FallOffExponent = 2f;
+                    light.Brightness *= 1.25f;
+                }
+                else
+                {
+                    light.Radius *= 0.4f;
+                    light.FallOffExponent = 2f;
+                    light.Brightness *= 1.6f;
+                }
+                //light.Brightness *= 2500f;
+                //light.UseInverseSquaredFalloff = true;
+            }
+
             if (true)
             {
                 // match FTEQW dynamic only light values