when collected all crystals it is possible to move to the next level, by stepping in the portal

Portal.cpp

@@ -0,0 +1,34 @@
+#include "Portal.h"
+#include "Model.h"
+#include <iostream>
+#include "Player.h"
+#include "WorldHandler.h"
+
+Portal::Portal(const std::string &fileName,
+	const Vec3f &position,
+	Vec3f &rotation,
+	const float &scale)
+{
+	model = Model::load(fileName);
+	this->position = position;
+	this->rotation = rotation;
+	this->scale = scale;
+	this->canCollide = true;
+
+	mayEnter = false;
+	maxCrystals = 0;
+}
+
+
+Portal::~Portal()
+{
+}
+
+void Portal::collide()
+{		
+	if (maxCrystals == (Player::getInstance()->crystals) && !mayEnter)
+	{
+		canCollide = false;
+		mayEnter = true;
+	}
+}