refactor (working version)

include/ColliderComponent.h

@@ -1,7 +1,8 @@
 #pragma once
-#include <string>
 #include "SDL.h"
-#include "Components.h"
+#include "Component.h"
+
+class TransformComponent;
 
 class ColliderComponent : public Component
 {
@@ -10,27 +11,8 @@ public:
 	const char* tag;
 	TransformComponent* transform;
 
-	ColliderComponent(const char* tag)
-	{
-		this->tag = tag;
-	}
+	ColliderComponent(const char* tag);
 
-	void init() override
-	{
-		if (!entity->hasComponent<TransformComponent>())
-		{
-			entity->addComponent<TransformComponent>();
-		}
-		transform = &entity->getComponent<TransformComponent>();
-		Game::colliders.push_back(this);
-	}
-
-	void update() override
-	{
-		collider.x = transform->position.x;
-		collider.y = transform->position.y;
-
-		collider.w = transform->width * transform->scale;
-		collider.h = transform->height * transform->scale;
-	}
+	void init() override;
+	void update() override;
 };

include/Component.h

@@ -0,0 +1,15 @@
+#pragma once
+
+class Entity;
+
+class Component
+{
+public:
+	Entity* entity;
+
+	virtual void init() {}
+	virtual void update() {}
+	virtual void draw() {}
+
+	virtual ~Component() = default;
+};

include/Components.h

@@ -1,5 +1,8 @@
 #pragma once
 #include "ECS.h"
+#include "Component.h"
+#include "Manager.h"
+#include "Entity.h"
 #include "TransformComponent.h"
 #include "SpriteComponent.h"
 #include "KeyboardController.h"

include/Constants.h

@@ -0,0 +1,18 @@
+#pragma once
+#include <iostream>
+
+using Group = std::size_t;
+
+constexpr std::size_t MAX_COMPONENTS = 32;
+constexpr std::size_t MAX_GROUPS = 32;
+
+constexpr int SCREEN_SIZE_HEIGHT = 640;
+constexpr int SCREEN_SIZE_WIDTH = 800;
+
+constexpr int FPS = 60;
+
+constexpr int TILE_SIZE = 32;
+
+constexpr int MAP_SIZE_X = 25;
+constexpr int MAP_SIZE_Y = 20;
+

include/Defines.h

@@ -1,12 +1,2 @@
 #pragma once
 
-#define SCREEN_SIZE_HEIGHT 640
-#define SCREEN_SIZE_WIDTH 800
-
-#define FPS 60
-
-#define TILE_SIZE 32
-
-#define MAP_SIZE_X 25
-#define MAP_SIZE_Y 20
-

include/ECS.h

@@ -6,6 +6,7 @@
 #include <algorithm>
 #include <bitset>
 #include <array>
+#include "Constants.h"
 
 class Component;
 class Entity;
@@ -25,147 +26,3 @@ template <typename T> inline ComponentID getComponentTypeID() noexcept
 	static ComponentID typeID = getNewComponentTypeID();
 	return typeID;
 }
-
-constexpr std::size_t maxComponents = 32;
-constexpr std::size_t maxGroups = 32;
-
-using ComponentBitSet = std::bitset<maxComponents>;
-using GroupBitSet = std::bitset<maxGroups>;
-using ComponentArray = std::array<Component*, maxComponents>;
-
-class Component
-{
-	public:
-		Entity* entity;
-
-		virtual void init() {}
-		virtual void update() {}
-		virtual void draw() {}
-
-		virtual ~Component() {}
-};
-
-class Entity
-{
-	public:
-		Entity(Manager& mManager) : manager(mManager)
-		{
-
-		}
-		void update()
-		{
-			for (auto& c : components) c->update();
-		}
-
-		void draw() 
-		{
-			for (auto& c : components) c->draw();
-		}
-
-		bool isActive() const { return this->active; }
-		void destroy() { this->active = false; }
-
-		bool hasGroup(Group mGroup)
-		{
-			return groupBitSet[mGroup];
-		}
-		void addGroup(Group mGroup);
-		void delGroup(Group mGroup)
-		{
-			groupBitSet[mGroup] = false;
-		}
-
-
-		template <typename T> bool hasComponent() const
-		{
-			return componentBitSet[getComponentTypeID<T>()];
-		}
-
-		template <typename T, typename...TArgs> 
-		T& addComponent(TArgs&&...mArgs)
-		{
-			T* c(new T(std::forward<TArgs>(mArgs)...));
-			c->entity = this;
-			std::unique_ptr<Component> uPtr{ c };
-			this->components.emplace_back(std::move(uPtr));
-
-			componentArray[getComponentTypeID<T>()] = c;
-			componentBitSet[getComponentTypeID<T>()] = true;
-
-			c->init();
-			return *c;
-		};
-
-		template<typename T> T& getComponent() const
-		{
-			auto ptr(componentArray[getComponentTypeID<T>()]);
-			return *static_cast<T*>(ptr);
-		}
-		
-
-	private:
-		Manager& manager;
-		bool active = true;
-		std::vector<std::unique_ptr<Component>> components;
-
-		ComponentArray componentArray;
-		ComponentBitSet componentBitSet;
-		GroupBitSet groupBitSet;
-};
-
-class Manager
-{
-	public:
-		void update()
-		{
-			for (auto& e : entities) e->update();
-		}
-
-		void draw()
-		{
-			for (auto& e : entities) e->draw();
-		}
-
-		void refresh()
-		{
-			for (auto i(0u); i < maxGroups; i++)
-			{
-				auto& v(groupedEntities[i]);
-				v.erase(
-					std::remove_if(std::begin(v), std::end(v),
-						[i](Entity* mEntity)
-						{
-							return !mEntity->isActive() || !mEntity->hasGroup(i);
-						}),std::end(v));
-			}
-
-			entities.erase(std::remove_if(std::begin(entities), std::end(entities),
-				[](const std::unique_ptr<Entity>& mEntity)
-				{
-					return !mEntity->isActive();
-				}),
-				std::end(entities));
-		}
-
-		void addToGroup(Entity* mEntity, Group mGroup)
-		{
-			groupedEntities[mGroup].emplace_back(mEntity);
-		}
-
-		std::vector<Entity*>& getGroup(Group mGroup)
-		{
-			return groupedEntities[mGroup];
-		}
-
-		Entity& addEntity()
-		{
-			Entity* e = new Entity(*this);
-			std::unique_ptr<Entity> uPtr{ e };
-			entities.emplace_back(std::move(uPtr));
-			return *e;
-		}
-
-	private:
-		std::vector<std::unique_ptr<Entity>> entities;
-		std::array<std::vector<Entity*>, maxGroups> groupedEntities;
-};

include/Entity.h

@@ -0,0 +1,65 @@
+#pragma once
+#include <array>
+#include <vector>
+#include <bitset>
+#include "Constants.h"
+#include "Component.h"
+#include "SpriteComponent.h"
+#include "ECS.h"
+
+class Manager;
+//class Component;
+
+using ComponentBitSet = std::bitset<MAX_COMPONENTS>;
+using GroupBitSet = std::bitset<MAX_GROUPS>;
+using ComponentArray = std::array<Component*, MAX_COMPONENTS>;
+
+class Entity
+{
+public:
+	explicit Entity(Manager& mManager) : manager(mManager) { }
+
+	void update() const;
+	void draw() const;
+
+	bool isActive() const { return this->active; }
+	void destroy() { this->active = false; }
+
+	bool hasGroup(Group mGroup);
+	void addGroup(Group mGroup);
+	void delGroup(Group mGroup);
+
+	template <typename T> bool hasComponent() const
+	{
+		return componentBitSet[getComponentTypeID<T>()];
+	}
+
+	template <typename T, typename...TArgs> T& addComponent(TArgs&&...mArgs)
+	{
+		T* c(new T(std::forward<TArgs>(mArgs)...));
+		c->entity = this;
+		std::unique_ptr<Component> uPtr{ c };
+		this->components.emplace_back(std::move(uPtr));
+
+		componentArray[getComponentTypeID<T>()] = c;
+		componentBitSet[getComponentTypeID<T>()] = true;
+
+		c->init();
+		return *c;
+	};
+	
+	template <typename T> T& getComponent() const
+	{
+		auto ptr(componentArray[getComponentTypeID<T>()]);
+		return *static_cast<T*>(ptr);
+	}
+
+private:
+	Manager& manager;
+	bool active = true;
+	std::vector<std::unique_ptr<Component>> components;
+
+	ComponentArray componentArray;
+	ComponentBitSet componentBitSet;
+	GroupBitSet groupBitSet;
+};

include/Game.h

@@ -20,7 +20,7 @@ class Game
 		void update();
 		void render();
 		void clean();
-		bool running();
+		bool running() const;
 
 		static void addTile(int id, int x, int y);
 		static SDL_Renderer* renderer;
@@ -32,4 +32,3 @@ class Game
 		bool isRunning = false;
 		SDL_Window* window;
 };
-

include/GameObject.h

@@ -1,11 +1,11 @@
 #pragma once
-#include "Game.h"
+#include "SDL.h"
 
 class GameObject
 {
 	public:
 		GameObject(const char* texturesheet, int x, int y);
-		~GameObject();
+		~GameObject() = default;
 
 		void update();
 		void render();
@@ -15,6 +15,7 @@ class GameObject
 		int yPos;
 
 		SDL_Texture* objTexture;
-		SDL_Rect srcRect, destRect;
+		SDL_Rect srcRect;
+		SDL_Rect destRect;
 };
 

include/KeyboardController.h

@@ -1,7 +1,8 @@
 #pragma once
-#include "Game.h"
-#include "ECS.h"
-#include "Components.h"
+#include "SDL.h"
+#include "Component.h"
+
+class TransformComponent;
 
 class KeyboardController : public Component
 {
@@ -14,12 +15,10 @@ public:
 	SDL_Scancode right;
 	//SDL_Scancode action;
 
-	KeyboardController();
+	KeyboardController() = default;
 	KeyboardController(SDL_Scancode up, SDL_Scancode down, SDL_Scancode left, SDL_Scancode right/*, SDL_Scancode action*/);
-
-	~KeyboardController();
+	~KeyboardController() = default;
 
 	void init() override;
-
 	void update() override;
 };

include/Manager.h

@@ -0,0 +1,24 @@
+#pragma once
+#include <iostream>
+#include <array>
+#include <vector>
+#include "Constants.h"
+
+class Entity;
+
+class Manager
+{
+public:
+	void update();
+	void draw();
+	void refresh();
+
+	void addToGroup(Entity* mEntity, Group mGroup);
+	std::vector<Entity*>& getGroup(Group mGroup);
+
+	Entity& addEntity();
+
+private:
+	std::vector<std::unique_ptr<Entity>> entities;
+	std::array<std::vector<Entity*>, MAX_GROUPS> groupedEntities;
+};

include/Map.h

@@ -1,17 +1,10 @@
 #pragma once
-#include "Defines.h"
-#include <string>
 
 class Map
 {
-	public:
-		Map();
-		~Map();
+public:
+	Map() = default;
+	~Map() = default;
 
 	static void loadMap(const char* path, int sizeX, int sizeY);
-
-	private:
-		
-
 };
-

include/SpriteComponent.h

@@ -1,54 +1,25 @@
 #pragma once
-#include "Components.h"
 #include "SDL.h"
-#include "TextureManager.h"
+#include "Component.h"
+
+class TransformComponent;
 
 class SpriteComponent : public Component
 {
 	public:
 		SpriteComponent() = default;
-		SpriteComponent(const char* path)
-		{
-			setTexture(path);
-		}
+		SpriteComponent(const char* path);
+		~SpriteComponent();
 
-		~SpriteComponent()
-		{
-			SDL_DestroyTexture(this->texture);
-		}
+		void setTexture(const char* path);
 
-		void setTexture(const char* path)
-		{
-			this->texture = TextureManager::get().loadTexture(path);
-		}
-
-		void init() override
-		{
-			this->transform = &entity->getComponent<TransformComponent>();
-
-			this->srcRect.x = this->srcRect.y = 0;
-			this->srcRect.w = transform->width;
-			this->srcRect.h = transform->height;
-;
-			
-		}
-
-		void update() override
-		{
-			this->destRect.x = this->transform->position.x;
-			this->destRect.y = this->transform->position.y;
-			this->destRect.w = transform->width * transform->scale;
-			this->destRect.h = transform->height * transform->scale;
-		}
-
-		void draw() override
-		{
-			TextureManager::get().draw(this->texture, this->srcRect, this->destRect);
-		}
+		void init() override;
+		void update() override;
+		void draw() override;
 
 	private:
 		TransformComponent* transform;
 		SDL_Texture* texture;
-		SDL_Rect srcRect, destRect;
-
+		SDL_Rect srcRect;
+		SDL_Rect destRect;
 };

include/TextureManager.h

@@ -1,6 +1,5 @@
 #pragma once
 
-#include "Game.h"
 #include "SDL_render.h"
 #include <map>
 

include/TileComponent.h

@@ -1,50 +1,25 @@
 #pragma once
-#include "ECS.h"
-#include "TransformComponent.h"
 #include "SDL.h"
+#include "Component.h"
 #include "TextureDict.h"
 
+class SpriteComponent;
+class TransformComponent;
+
 class TileComponent : public Component
 {
 public:
 	TransformComponent* transform;
 	SpriteComponent* sprite;
+	TextureDict textureDict;
 
 	SDL_Rect tileRect;
 	int tileID;
 	const char* path;
 
-	TextureDict textureDict;
-
 	TileComponent() = default;
-
-	TileComponent(int x, int y, int w, int h, int id)
-	{
-		this->tileRect.x = x;
-		this->tileRect.y = y;
-		this->tileRect.w = w;
-		this->tileRect.h = h;
-		tileID = id;
-
-		auto it = textureDict.textureDictionary.find(tileID); //every id has its own distinct texture (in texturedict.h)
-		if (it == textureDict.textureDictionary.end())
-		{
-			std::cout << "it end" << std::endl;
-			return;
-		}
-		bool test = it == textureDict.textureDictionary.end();
-		std::cout << it->second.data() << std::endl;
-		this->path = it->second.data();
-	}
-
+	TileComponent(int x, int y, int w, int h, int id);
 	~TileComponent() = default;
 
-	void init() override
-	{
-		this->entity->addComponent<TransformComponent>(this->tileRect.x, this->tileRect.y, this->tileRect.w, this->tileRect.h, 1);
-		this->transform = &entity->getComponent<TransformComponent>();
-
-		this->entity->addComponent<SpriteComponent>(this->path);
-		this->sprite = &entity->getComponent<SpriteComponent>();
-	}
+	void init() override;
 };

include/TransformComponent.h

@@ -1,6 +1,6 @@
 #pragma once
-#include "Components.h"
 #include "Vector2D.h"
+#include "Component.h"
 
 class TransformComponent : public Component
 {
@@ -15,50 +15,12 @@ public:
 
 	int speed = 3;
 
+	TransformComponent();
+	TransformComponent(int scale);
+	TransformComponent(float x, float y);
+	TransformComponent(float x, float y, int scale);
+	TransformComponent(float x, float y, int w, int h, int scale);
 
-	TransformComponent()
-	{
-		position.zero();
-	}
-
-	TransformComponent(int scale)
-	{
-		position.zero();
-		this->scale = scale;
-	}
-
-	TransformComponent(float x, float y)
-	{
-		this->position.x = x;
-		this->position.y = y;
-	}
-
-	TransformComponent(float x, float y, int scale)
-	{
-		this->position.x = x;
-		this->position.y = y;
-		this->scale = scale;
-	}
-
-	TransformComponent(float x, float y, int w, int h, int scale)
-	{
-		this->position.x = x;
-		this->position.y = y;
-		this->width = w;
-		this->height = h;
-		this->scale = scale;
-	}
-
-	void init() override
-	{
-		velocity.zero();
-	}
-
-	void update() override
-	{
-		// if(velocity.x != 0 && velocity.y != 0)
-		double multiplier = velocity.x != 0 && velocity.y != 0 ? 0.707 : 1; //normalizes vector
-		position.x += velocity.x * speed * multiplier;
-		position.y += velocity.y * speed * multiplier;
-	}
+	void init() override;
+	void update() override;
 };

src/ColliderComponent.cpp

@@ -0,0 +1,28 @@
+#include "ColliderComponent.h"
+#include "TransformComponent.h"
+#include "Entity.h"
+#include "Game.h"
+
+ColliderComponent::ColliderComponent(const char* tag)
+{
+	this->tag = tag;
+}
+
+void ColliderComponent::init()
+{
+	if (!entity->hasComponent<TransformComponent>())
+	{
+		entity->addComponent<TransformComponent>();
+	}
+	transform = &entity->getComponent<TransformComponent>();
+	Game::colliders.push_back(this);
+}
+
+void ColliderComponent::update()
+{
+	collider.x = transform->position.x;
+	collider.y = transform->position.y;
+
+	collider.w = transform->width * transform->scale;
+	collider.h = transform->height * transform->scale;
+}

src/ECS.cpp

@@ -1,7 +1,2 @@
 #include "ECS.h"
 
-void Entity::addGroup(Group mGroup)
-{
-	groupBitSet[mGroup] = true;
-	manager.addToGroup(this, mGroup);
-}

src/Entity.cpp

@@ -0,0 +1,56 @@
+#pragma once
+#include "Entity.h"
+#include "Manager.h"
+#include "Component.h"
+//#include "ECS.h"
+
+void Entity::update() const
+{
+	for (auto const& c : components) c->update();
+}
+
+void Entity::draw() const
+{
+	for (auto const& c : components) c->draw();
+}
+
+bool Entity::hasGroup(Group mGroup)
+{
+	return groupBitSet[mGroup];
+}
+
+void Entity::addGroup(Group mGroup)
+{
+	groupBitSet[mGroup] = true;
+	manager.addToGroup(this, mGroup);
+}
+
+void Entity::delGroup(Group mGroup)
+{
+	groupBitSet[mGroup] = false;
+}
+
+//template <typename T> bool Entity::hasComponent() const
+//{
+//	return componentBitSet[getComponentTypeID<T>()];
+//}
+
+//template <typename T, typename...TArgs> T& Entity::addComponent(TArgs&&...mArgs)
+//{
+//	T* c(new T(std::forward<TArgs>(mArgs)...));
+//	c->entity = this;
+//	std::unique_ptr<Component> uPtr{ c };
+//	this->components.emplace_back(std::move(uPtr));
+//
+//	componentArray[getComponentTypeID<T>()] = c;
+//	componentBitSet[getComponentTypeID<T>()] = true;
+//
+//	c->init();
+//	return *c;
+//};
+
+//template <typename T> T& Entity::getComponent() const
+//{
+//	auto ptr(componentArray[getComponentTypeID<T>()]);
+//	return *static_cast<T*>(ptr);
+//}

src/Game.cpp

@@ -1,10 +1,14 @@
 #include "Game.h"
 #include "TextureManager.h"
+#include "Manager.h"
 #include "Map.h"
-#include "ECS.h"
-#include "Components.h"
-#include "Vector2D.h"
-
+#include "Entity.h"
+#include "Component.h"
+#include "TransformComponent.h"
+#include "TileComponent.h"
+#include "ColliderComponent.h"
+#include "SpriteComponent.h"
+#include "KeyboardController.h"
 
 Map* map;
 Manager manager;
@@ -19,44 +23,42 @@ auto& player(manager.addEntity());
 auto& enemy(manager.addEntity());
 auto& wall(manager.addEntity());
 
-enum GroupLabel
+enum class GroupLabel
 {
-	GROUP_MAP,
-	GROUP_PLAYERS,
-	GROUP_ENEMIES,
-	GROUP_COLLIDERS
+	MAP,
+	PLAYERS,
+	ENEMIES,
+	COLLIDERS
 };
 
-Game::Game()
-{
+Game::Game() = default;
 
-}
-
-Game::~Game()
-{
-
-}
+Game::~Game() = default;
 
 void Game::init(const char* title, int xpos, int ypos, int width, int height, bool fullscreen)
 {
 	int flags = 0;
-	if (fullscreen) {
+	if (fullscreen)
+	{
 		flags = SDL_WINDOW_FULLSCREEN;
 	}
 
-	if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
+	if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
+	{
 		std::cout << "ERROR. Subsystem couldnt be initialized!" << std::endl;
 		return;
 	}
 
 	window = SDL_CreateWindow(title, xpos, ypos, width, height, flags);
-	if (!window) {
+	if (!window)
+	{
 		std::cout << "ERROR: Window couldnt be created!" << std::endl;
 		return;
 	}
 
 	renderer = SDL_CreateRenderer(window, -1, 0);
-	if (!renderer) {
+	if (!renderer)
+	{
 		std::cout << "ERROR: Renderer couldnt be created!" << std::endl;
 		return;
 	}
@@ -72,13 +74,13 @@ void Game::init(const char* title, int xpos, int ypos, int width, int height, bo
 	player.addComponent<SpriteComponent>("assets/chicken_neutral_knight.png"); //adds sprite (32x32px), path needed
 	player.addComponent<KeyboardController>(SDL_SCANCODE_W, SDL_SCANCODE_S, SDL_SCANCODE_A, SDL_SCANCODE_D);//custom keycontrols can be added
 	player.addComponent<ColliderComponent>("player"); //adds tag (for further use, reference tag)
-	player.addGroup(GROUP_PLAYERS); //tell programm what group it belongs to for rendering order
+	player.addGroup((size_t)GroupLabel::PLAYERS); //tell programm what group it belongs to for rendering order
 
 	enemy.addComponent<TransformComponent>(600, 500, 2);
 	enemy.addComponent<SpriteComponent>("assets/chicken_neutral.png");
 	enemy.addComponent<KeyboardController>(SDL_SCANCODE_UP, SDL_SCANCODE_DOWN, SDL_SCANCODE_LEFT, SDL_SCANCODE_RIGHT);
 	enemy.addComponent<ColliderComponent>("enemy");
-	enemy.addGroup(GROUP_ENEMIES);
+	enemy.addGroup((size_t)GroupLabel::ENEMIES);
 
 }
 
@@ -94,7 +96,6 @@ void Game::handleEvents()
 		default:
 			break;
 	}
-
 }
 
 void Game::update()
@@ -116,12 +117,11 @@ void Game::update()
 			enemy.getComponent<TransformComponent>().position = enemyPos;
 		}
 	}
-
 }
 
-auto& tiles(manager.getGroup(GROUP_MAP));
-auto& players(manager.getGroup(GROUP_PLAYERS));
-auto& enemies(manager.getGroup(GROUP_ENEMIES));
+auto& tiles(manager.getGroup((size_t)GroupLabel::MAP));
+auto& players(manager.getGroup((size_t)GroupLabel::PLAYERS));
+auto& enemies(manager.getGroup((size_t)GroupLabel::ENEMIES));
 
 void Game::render()
 {
@@ -153,11 +153,14 @@ void Game::addTile(int id, int x, int y)
 {
 	auto& tile(manager.addEntity());
 	tile.addComponent<TileComponent>(x, y, TILE_SIZE, TILE_SIZE, id);
-	if (id == 1) tile.addComponent<ColliderComponent>("water");
-	tile.addGroup(GROUP_MAP);
+	if (id == 1)
+	{
+		tile.addComponent<ColliderComponent>("water");
+	}
+	tile.addGroup((size_t)GroupLabel::MAP);
 }
 
-bool Game::running()
+bool Game::running() const
 {
 	return isRunning;
 }

src/GameObject.cpp

@@ -1,5 +1,6 @@
 #include "GameObject.h"
 #include "TextureManager.h"
+#include "Game.h"
 
 GameObject::GameObject(const char* texturesheet, int x, int y)
 {
@@ -8,11 +9,6 @@ GameObject::GameObject(const char* texturesheet, int x, int y)
 	this->yPos = y;
 }
 
-GameObject::~GameObject()
-{
-
-}
-
 void GameObject::update()
 {
 	xPos++;

src/KeyboardController.cpp

@@ -1,9 +1,6 @@
 #include "KeyboardController.h"
-
-KeyboardController::KeyboardController()
-{
-
-}
+#include "TransformComponent.h"
+#include "Entity.h"
 
 KeyboardController::KeyboardController(SDL_Scancode up, SDL_Scancode down, SDL_Scancode left, SDL_Scancode right)
 {
@@ -13,11 +10,6 @@ KeyboardController::KeyboardController(SDL_Scancode up, SDL_Scancode down, SDL_S
 	this->right = right;
 }
 
-KeyboardController::~KeyboardController()
-{
-
-}
-
 void KeyboardController::init()
 {
 	transform = &entity->getComponent<TransformComponent>();

src/Manager.cpp

@@ -0,0 +1,51 @@
+#include "Manager.h"
+#include "Entity.h"
+
+void Manager::update()
+{
+	for (auto& e : entities) e->update();
+}
+
+void Manager::draw()
+{
+	for (auto& e : entities) e->draw();
+}
+
+void Manager::refresh()
+{
+	for (auto i(0u); i < MAX_GROUPS; i++)
+	{
+		auto& v(groupedEntities[i]);
+		v.erase(
+			std::remove_if(std::begin(v), std::end(v),
+				[i](Entity* mEntity)
+				{
+					return !mEntity->isActive() || !mEntity->hasGroup(i);
+				}), std::end(v));
+	}
+
+	entities.erase(std::remove_if(std::begin(entities), std::end(entities),
+		[](const std::unique_ptr<Entity>& mEntity)
+		{
+			return !mEntity->isActive();
+		}),
+		std::end(entities));
+}
+
+void Manager::addToGroup(Entity* mEntity, Group mGroup)
+{
+	groupedEntities[mGroup].emplace_back(mEntity);
+}
+
+std::vector<Entity*>& Manager::getGroup(Group mGroup)
+{
+	return groupedEntities[mGroup];
+}
+
+Entity& Manager::addEntity()
+{
+	Entity* e = new Entity(*this);
+	std::unique_ptr<Entity> uPtr{ e };
+	entities.emplace_back(std::move(uPtr));
+	return *e;
+}

src/Map.cpp

@@ -1,15 +1,7 @@
 #include "Map.h"
-#include "Game.h"
 #include <fstream>
-
-Map::Map()
-{
-
-}
-
-Map::~Map()
-{
-}
+#include "Constants.h"
+#include "Game.h"
 
 void Map::loadMap(const char* path, int sizeX, int sizeY)
 {

src/SpriteComponent.cpp

@@ -0,0 +1,43 @@
+#include "TransformComponent.h"
+#include "SpriteComponent.h"
+#include "TextureManager.h"
+#include "Entity.h"
+
+SpriteComponent::SpriteComponent(const char* path)
+{
+	setTexture(path);
+}
+
+SpriteComponent::~SpriteComponent()
+{
+	SDL_DestroyTexture(this->texture);
+}
+
+void SpriteComponent::setTexture(const char* path)
+{
+	this->texture = TextureManager::get().loadTexture(path);
+}
+
+void SpriteComponent::init()
+{
+	this->transform = &entity->getComponent<TransformComponent>();
+
+	this->srcRect.x = this->srcRect.y = 0;
+	this->srcRect.w = transform->width;
+	this->srcRect.h = transform->height;
+}
+
+void SpriteComponent::update()
+{
+	this->destRect.x = this->transform->position.x;
+	this->destRect.y = this->transform->position.y;
+	this->destRect.w = transform->width * transform->scale;
+	this->destRect.h = transform->height * transform->scale;
+}
+
+void SpriteComponent::draw()
+{
+	TextureManager::get().draw(this->texture, this->srcRect, this->destRect);
+}
+
+

src/TextureManager.cpp

@@ -1,5 +1,6 @@
 #include "TextureManager.h"
 #include <cstdio>
+#include "Game.h"
 
 SDL_Texture* TextureManager::loadTexture(const char* fileName)
 {

src/TileComponent.cpp

@@ -0,0 +1,32 @@
+#include "TileComponent.h"
+#include "Entity.h"
+#include "TransformComponent.h"
+
+TileComponent::TileComponent(int x, int y, int w, int h, int id)
+{
+	this->tileRect.x = x;
+	this->tileRect.y = y;
+	this->tileRect.w = w;
+	this->tileRect.h = h;
+	tileID = id;
+
+	auto it = textureDict.textureDictionary.find(tileID); //every id has its own distinct texture (in texturedict.h)
+	if (it == textureDict.textureDictionary.end())
+	{
+		std::cout << "it end" << std::endl;
+		return;
+	}
+	bool test = it == textureDict.textureDictionary.end();
+	std::cout << it->second.data() << std::endl;
+	this->path = it->second.data();
+}
+
+void TileComponent::init()
+{
+	this->entity->addComponent<TransformComponent>(this->tileRect.x, this->tileRect.y, this->tileRect.w, this->tileRect.h, 1);
+	this->transform = &entity->getComponent<TransformComponent>();
+
+	this->entity->addComponent<SpriteComponent>(this->path);
+	this->sprite = &entity->getComponent<SpriteComponent>();
+}
+

src/TransformComponent.cpp

@@ -0,0 +1,47 @@
+#include "TransformComponent.h"
+
+TransformComponent::TransformComponent()
+{
+	position.zero();
+}
+
+TransformComponent::TransformComponent(int scale)
+{
+	position.zero();
+	this->scale = scale;
+}
+
+TransformComponent::TransformComponent(float x, float y)
+{
+	this->position.x = x;
+	this->position.y = y;
+}
+
+TransformComponent::TransformComponent(float x, float y, int scale)
+{
+	this->position.x = x;
+	this->position.y = y;
+	this->scale = scale;
+}
+
+TransformComponent::TransformComponent(float x, float y, int w, int h, int scale)
+{
+	this->position.x = x;
+	this->position.y = y;
+	this->width = w;
+	this->height = h;
+	this->scale = scale;
+}
+
+void TransformComponent::init()
+{
+	velocity.zero();
+}
+
+void TransformComponent::update()
+{
+	// if(velocity.x != 0 && velocity.y != 0)
+	double multiplier = velocity.x != 0 && velocity.y != 0 ? 0.707 : 1; //normalizes vector
+	position.x += velocity.x * speed * multiplier;
+	position.y += velocity.y * speed * multiplier;
+}

src/main.cpp

@@ -1,5 +1,5 @@
 #include "Game.h"
-#include "Defines.h"
+#include "Constants.h"
 
 Game* game = nullptr;