Adds functionality to apply attenuation/decay to point lights in order to compute the light's range.

Adds functionality to apply attenuation/decay and fall off angle to directional lights in order to compute the light's range and inner and outer angles.
Creates an ambient light when the light type is set to ePOINT, and it's decay type is eNONE. This is because when exporting to .fbx format from Maya, any ambient lights get converted into a point light.
Removes tabs from file and replaces with spaces.

gameplay-encoder/src/FBXSceneEncoder.cpp

@@ -249,13 +249,13 @@ void FBXSceneEncoder::loadScene(KFbxScene* fbxScene)
     // Find the ambient light of the scene
     KFbxColor ambientColor = fbxScene->GetGlobalSettings().GetAmbientColor();
     scene->setAmbientColor((float)ambientColor.mRed, (float)ambientColor.mGreen, (float)ambientColor.mBlue);
-
-	// Assign the first camera node (if there is one) in the scene as the active camera
-	// This ensures that if there's a camera in the scene that it is assigned as the 
-	// active camera.
-	// TODO: add logic to find the "active" camera node in the fbxScene
-	scene->setActiveCameraNode(scene->getFirstCameraNode());
-
+    
+    // Assign the first camera node (if there is one) in the scene as the active camera
+    // This ensures that if there's a camera in the scene that it is assigned as the 
+    // active camera.
+    // TODO: add logic to find the "active" camera node in the fbxScene
+    scene->setActiveCameraNode(scene->getFirstCameraNode());
+    
     _gamePlayFile.addScene(scene);
 }
 
@@ -652,20 +652,65 @@ void FBXSceneEncoder::loadLight(KFbxNode* fbxNode, Node* node)
     switch (fbxLight->LightType.Get())
     {
     case KFbxLight::ePOINT:
-        light->setPointLight();
-        // TODO: range
+    {
+        KFbxLight::EDecayType decayType = fbxLight->DecayType.Get();
+        switch (decayType)
+        {
+        case KFbxLight::eNONE:
+            // No decay. Can assume we have an ambient light, because ambient lights in the scene are 
+            // converted to point lights with no decay when exporting to FBX.
+            light->setAmbientLight();
+            break;
+        case KFbxLight::eLINEAR:
+            light->setPointLight();
+            light->setLinearAttenuation((float)fbxLight->DecayStart.Get());
+            break;
+        case KFbxLight::eQUADRATIC:
+            light->setPointLight();
+            light->setQuadraticAttenuation((float)fbxLight->DecayStart.Get());
+            break;
+        case KFbxLight::eCUBIC:
+        default:
+            // Not supported..
+            break;
+        }
         break;
+    }
     case KFbxLight::eDIRECTIONAL:
+    {
         light->setDirectionalLight();
         break;
+    }
     case KFbxLight::eSPOT:
+    {
         light->setSpotLight();
-        // TODO: range and angles
+
+        KFbxLight::EDecayType decayType = fbxLight->DecayType.Get();
+        switch (decayType)
+        {
+        case KFbxLight::eNONE:
+            // No decay.
+            break;
+        case KFbxLight::eLINEAR:
+            light->setLinearAttenuation((float)fbxLight->DecayStart.Get());
+            break;  
+        case KFbxLight::eQUADRATIC:
+            light->setQuadraticAttenuation((float)fbxLight->DecayStart.Get());
+            break;
+        case KFbxLight::eCUBIC:
+            // Not supported..
+            break;
+        }
+
+        light->setFalloffAngle(MATH_DEG_TO_RAD((float)fbxLight->ConeAngle.Get())); // fall off angle
         break;
+    }
     default:
+    {
         warning("Unknown light type in node.");
         return;
     }
+    }
 
     _gamePlayFile.addLight(light);
     node->setLight(light);