Allow changing Tile type after insertion.

source/abstract/Sprite.cpp

@@ -23,15 +23,7 @@ Sprite::Sprite(const Vector2f& position, Category category,
 	mShape.setTextureRect(sf::IntRect(Vector2i(), Vector2i(size)));
 	setPosition(position);
 	setDirection(direction);
-	try {
-		mTexture = ResourceManager::i().acquire(Loader::i()
-				.fromFile<sf::Texture>(texture));
-		mShape.setTexture(&*mTexture, false);
-	}
-	catch (thor::ResourceLoadingException&) {
-		LOG_W("Failed to load texture " << texture << ", coloring red.");
-		mShape.setFillColor(sf::Color(255, 0, 0));
-	}
+	setTexture(texture);
 }
 
 /**
@@ -150,3 +142,21 @@ void
 Sprite::setPosition(const Vector2f& position) {
 	mShape.setPosition(position);
 }
+
+
+/**
+ * Sets a new texture. The old one is discarded through smart pointers if
+ * it isn't used any more.
+ */
+void
+Sprite::setTexture(const std::string& texture) {
+	try {
+		mTexture = ResourceManager::i().acquire(Loader::i()
+				.fromFile<sf::Texture>(texture));
+		mShape.setTexture(&*mTexture, false);
+	}
+	catch (thor::ResourceLoadingException&) {
+		LOG_W("Failed to load texture " << texture << ", coloring red.");
+		mShape.setFillColor(sf::Color(255, 0, 0));
+	}
+}

source/abstract/Sprite.h

@@ -64,6 +64,7 @@ protected:
 	void setSpeed(Vector2f direction, float speed);
 	void setDirection(const Vector2f& direction);
 	void setPosition(const Vector2f& position);
+	void setTexture(const std::string& texture);
 
 private:
 	friend class CollisionModel;

source/sprites/Tile.cpp

@@ -14,20 +14,42 @@
 #include "../util/Yaml.h"
 #include "../World.h"
 
-const Vector2i Tile::TILE_SIZE = sf::Vector2i(75, 75);
+const Vector2i Tile::TILE_SIZE = Vector2i(75, 75);
 
 /**
- * Constructs a tile.
+ * Constructs a tile. Use this over setTile if a tile has not been generated
+ * for the position yet.
  *
  * @param pType Type of the tile to create.
- * @param pPosition Position of the tile in tile coordinates.
- * @param world Box2D world object.
  */
-Tile::Tile(Type type, int x, int y) :
-		Rectangle(Vector2f(x * TILE_SIZE.x, y * TILE_SIZE.y),
-				CATEGORY_WORLD, (isSolid(type)) ? 0xffff : 0,
-				Yaml(getConfig(type))),
-		mType(type) {
+Tile::Tile(const Vector2i& position, Type type) :
+		Rectangle(Vector2f(thor::cwiseProduct(position, TILE_SIZE)),
+				CATEGORY_WORLD,	(isSolid(type)) ? 0xffff : 0,
+				Yaml(getConfig(type))),	mType(type) {
+}
+
+/**
+ * Places a tile of type at position, removing an old tile of different type
+ * if one exists.
+ *
+ * Highly inefficient as World::getNearbySprites has to be searched for every call.
+ */
+void
+Tile::setTile(const Vector2i& position, Type type, World& world) {
+	Vector2f worldPosition(thor::cwiseProduct(position, TILE_SIZE));
+	auto candidates = world.getNearbySprites(worldPosition, 1.0f);
+	for (auto& c : candidates) {
+		std::shared_ptr<Tile> converted = std::dynamic_pointer_cast<Tile>(c);
+		// Direct comparison of floats as both are from the same generation
+		// on the same CPU.
+		if (converted.get() != nullptr &&
+				converted->getPosition() == worldPosition &&
+				converted->getType() != type) {
+			world.remove(converted);
+			break;
+		}
+	}
+	world.insert(std::shared_ptr<Sprite>(new Tile(position, type)));
 }
 
 /**
@@ -41,7 +63,6 @@ Tile::getConfig(Type type) {
 	case Type::WALL:
 		return "tile_wall.yaml";
 	default:
-		assert(false);
 		return "";
 	}
 }

source/sprites/Tile.h

@@ -10,6 +10,8 @@
 
 #include "../abstract/Rectangle.h"
 
+class World;
+
 /**
  * Holds information about a single tile.
  */
@@ -19,20 +21,16 @@ public:
 		WALL,
 		FLOOR
 	};
-
-public:
-	explicit Tile(Type type, int x, int y);
-
-	Type getType() const;
-
-public:
 	static const Vector2i TILE_SIZE; //< Tile size in pixels.
 
 public:
+	explicit Tile(const Vector2i& position, Type type);
+	Type getType() const;
+
+	static void setTile(const Vector2i& position, Type type, World& world);
 	static std::string getConfig(Type type);
 	static bool isSolid(Type type);
 
-
 private:
 	Type mType;
 };