Finish lecture 82: Implement the World class

Signed-off-by: Daniel Henry <iamdanhenry@gmail.com>

LightYearsEngine/include/EntryPoint.h

@@ -0,0 +1,7 @@
+#pragma once
+
+namespace ly {
+	class Application;
+}
+
+extern ly::Application* GetApplication();

LightYearsEngine/include/framework/Application.h

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+#pragma once
+#include <SFML/Graphics.hpp>
+#include "framework/Core.h"
+
+namespace ly {
+
+	class World;
+	class Application {
+	public:
+		Application();
+		void Run();
+
+		template<typename WorldType>
+		weak<World> LoadWorld() {
+			shared<WorldType> newWorld{ new WorldType{this} };
+			currentWorld = newWorld;
+			currentWorld->BeginPlayInternal();
+			return newWorld;
+		}
+	private:
+		void TickInternal(float deltaTime);
+		void RenderInternal();	
+
+		virtual void Render();
+		virtual void Tick(float deltaTime);
+
+		sf::RenderWindow mWindow;
+		float mTargetFrameRate;
+		sf::Clock mTickClock;
+
+		shared<World> currentWorld;
+	};
+
+}

LightYearsEngine/include/framework/Core.h

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+#pragma once
+#include <stdio.h>
+#include <memory>
+#include <map>
+#include <vector>
+#include <unordered_map>
+
+namespace ly {
+
+template<typename T>
+using unique = std::unique_ptr<T>;
+
+template<typename T>
+using shared = std::shared_ptr<T>;
+
+template<typename T>
+using weak = std::weak_ptr<T>;
+
+template<typename T>
+using List = std::vector<T>;
+
+template<typename keyType, typename valueType, typename Pr = std::less<keyType>>
+using Map = std::map<keyType, valueType, Pr>;
+
+template<typename keyType, typename valueType, typename Hasher = std::hash<keyType>>
+using Dictionary = std::map<keyType, valueType, Hasher>;
+
+// Logging Macro
+#define LOG(M, ...) printf(M "\n", ##__VA_ARGS__)
+}

LightYearsEngine/include/framework/World.h

@@ -0,0 +1,21 @@
+#pragma once
+
+namespace ly {
+	class Application;
+
+	class World {
+	public:
+		World(Application *owningApp);
+
+		void BeginPlayInternal();
+		void TickInternal(float deltaTime);
+
+		virtual ~World();
+
+	private:
+		void BeginPlay();
+		void Tick(float deltaTime);
+		Application* mOwningApp;
+		bool mBeganPlay;
+	};
+}