Gave the skydome it's own class which contains the nightTexture and changed the loader and the level XML.

data/levels/Level1.xml

@@ -12117,6 +12117,7 @@
 <skydome>
     <model>skydome.obj</model>
     <texture>skydomeNew.png</texture>
+    <nightTexture>nightskydome.png</nightTexture>
 </skydome>
 
 <physics>

level.cc

@@ -115,7 +115,7 @@ void Level::update(float runTimeSinceLastUpdate, float runTime, glm::vec2 mouseD
             physicsObjects[i]->setRotation(physics.getRotation(i));
         }
         
-        skydome->setPosition(glm::vec3(cameraCenter->getPosition().x, 
+        skydome.setPosition(glm::vec3(cameraCenter->getPosition().x, 
             0.0f, cameraCenter->getPosition().z));
 
         if (runTime > 2.0f) {
@@ -205,7 +205,7 @@ void Level::setStrength(float strength) {
     this->strength = strength;
 }
 
-void Level::setSkydomeObject(Object* object){
+void Level::setSkydomeObject(Skydome object){
     this->skydome = object;
 }
 
@@ -261,6 +261,6 @@ Terrain* Level::getTerrain() {
     return &terrain;
 }
 
-Object* Level::getSkydome() {
-    return skydome;
+Skydome* Level::getSkydome() {
+    return &skydome;
 }

level.hh

@@ -10,6 +10,7 @@
 #include "camera.hh"
 #include "physics.hh"
 #include "trigger.hh"
+#include "skydome.hh"
 
 extern "C" {
 #include "extern/lua/src/lua.h"
@@ -36,13 +37,13 @@ class Level {
         glm::vec4 getFogColour();
         void setSkydomeSize(float size);
         float getSkydomeSize();
-        Object* getSkydome();
+        Skydome* getSkydome();
         std::vector<Object*>* getObjects();
         std::vector<Object*>* getPhysicsObjects();
         void deleteObject(int objectIndex);
         void moveObject(int objectIndex, float strength, float xPos, float yPos, float zPos);
         void setStrength(float strength);
-        void setSkydomeObject(Object* object);
+        void setSkydomeObject(Skydome object);
         void addObject(Object* object);
         void addPhysicsObject(Object* object);
         void setAmbientLight(glm::vec3 colour);
@@ -70,7 +71,7 @@ class Level {
         Light directionalLight;
         Object* cameraCenter;
         int playerIndex;
-        Object* skydome;
+        Skydome skydome;
         Physics physics;
         Camera camera;
         Terrain terrain;

loader.cc

@@ -70,7 +70,6 @@ void Loader::load(std::string filePath, Level* level, std::string compositionsPa
     
     //load the skydome
     XMLElement* skydomeElement = doc->FirstChildElement("skydome");
-    std::string skydomeTexture = queryString(skydomeElement, "texture");
     std::string skydomeModelFileName = queryString(skydomeElement, "model");
     std::string skydomePath = "../" + globalGeometryPath + skydomeModelFileName;
     if(stat(skydomePath.c_str(), &buf) != 0){
@@ -78,14 +77,21 @@ void Loader::load(std::string filePath, Level* level, std::string compositionsPa
         exit(-1);
     }
     Model skydomeModel = Model(skydomeModelFileName, level->getSkydomeSize());
+    std::string skydomeTexture = queryString(skydomeElement, "texture");
     std::string skydomeTexturePath = "../" + globalTexturePath + skydomeTexture;
     if(stat(skydomeTexturePath.c_str(), &buf) != 0){
         std::cout << "The texture file " << skydomeTexturePath << " does not exist." << std::endl;
         exit(-1);
     }
     Material skydomeMaterial = Material(skydomeTexture, 1.0f, 0.0f, 0.0f, 0.0f);
-    Object* skydomeObject = new Object(skydomeModel, skydomeMaterial, glm::vec3(0.0f, 0.0f, 0.0f),
-        glm::vec3(0.0f, 0.0f, 0.0f), true);
+    std::string nightTexture = queryString(skydomeElement, "nightTexture");
+    std::string nightTexturePath = "../" + globalTexturePath + nightTexture;
+    if(stat(nightTexturePath.c_str(), &buf) != 0){
+        std::cout << "The texture file " << nightTexturePath << " does not exist." << std::endl;
+        exit(-1);
+    }
+    Material nightMaterial = Material(nightTexture, 1.0f, 0.0f, 0.0f, 0.0f);
+    Skydome skydomeObject = Skydome(skydomeModel, skydomeMaterial, nightMaterial);
     level->setSkydomeObject(skydomeObject);
     
     //load lighting parameters

skydome.cc

@@ -0,0 +1,13 @@
+#include "skydome.hh"
+
+Skydome::Skydome(Model model, Material material, Material nightTexture) :
+    Object(model, material, glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 0.0f, 0.0f), true){
+        this->nightTexture = nightTexture;
+}
+
+Skydome::Skydome() {
+}
+
+Material* Skydome::getNightTexture() {
+    return &nightTexture;
+}

skydome.hh

@@ -0,0 +1,11 @@
+#pragma once
+#include "object.hh"
+
+class Skydome : public Object {
+    public:
+        Skydome(Model model, Material material, Material nightTexture);
+        Skydome();
+        Material* getNightTexture();
+    private:
+        Material nightTexture;
+};