Remove handling of maps' usage= key

src/game_events/action_wml.cpp

@@ -1183,17 +1183,15 @@ WML_HANDLER_FUNCTION(terrain_mask, /*event_info*/, cfg)
 
 	//config level;
 	std::string mask = cfg["mask"];
-	std::string usage = "mask";
 	int border_size = 0;
 
 	if (mask.empty()) {
-		usage = cfg["usage"].str();
 		border_size = cfg["border_size"];
 		mask = cfg["data"].str();
 	}
 
 	try {
-		mask_map.read(mask, false, border_size, usage);
+		mask_map.read(mask, false, border_size);
 	} catch(incorrect_map_format_error&) {
 		ERR_NG << "terrain mask is in the incorrect format, and couldn't be applied" << std::endl;
 		return;

src/map.cpp

@@ -40,7 +40,7 @@ static lg::log_domain log_config("config");
 #define LOG_G LOG_STREAM(info, lg::general)
 #define DBG_G LOG_STREAM(debug, lg::general)
 
-const std::string gamemap::default_map_header = "usage=map\nborder_size=1\n\n";
+const std::string gamemap::default_map_header = "border_size=1\n\n";
 const gamemap::tborder gamemap::default_border = gamemap::SINGLE_TILE_BORDER;
 
 /** Gets the list of terrains. */
@@ -116,8 +116,7 @@ gamemap::gamemap(const tdata_cache& tdata, const std::string& data):
 		h_(-1),
 		total_width_(0),
 		total_height_(0),
-		border_size_(gamemap::SINGLE_TILE_BORDER),
-		usage_(IS_MAP)
+		border_size_(gamemap::SINGLE_TILE_BORDER)
 {
 	DBG_G << "loading map: '" << data << "'\n";
 
@@ -134,8 +133,7 @@ gamemap::gamemap(const tdata_cache& tdata, const config& level):
 		h_(-1),
 		total_width_(0),
 		total_height_(0),
-		border_size_(gamemap::SINGLE_TILE_BORDER),
-		usage_(IS_MAP)
+		border_size_(gamemap::SINGLE_TILE_BORDER)
 {
 	DBG_G << "loading map: '" << level.debug() << "'\n";
 
@@ -154,11 +152,10 @@ gamemap::~gamemap()
 {
 }
 
-void gamemap::read(const std::string& data, const bool allow_invalid, int border_size, std::string usage) {
+void gamemap::read(const std::string& data, const bool allow_invalid, int border_size) {
 
 	// Initial stuff
 	border_size_ = border_size;
-	set_usage(usage);
 	tiles_.clear();
 	villages_.clear();
 	std::fill(startingPositions_, startingPositions_ +
@@ -242,31 +239,6 @@ void gamemap::read(const std::string& data, const bool allow_invalid, int border
 	}
 }
 
-void gamemap::set_usage(const std::string& usage)
-{
-	utils::string_map symbols;
-	symbols["border_size_key"] = "border_size";
-	symbols["usage_key"] = "usage";
-	symbols["usage_val"] = usage;
-	const std::string msg = "'$border_size_key|' should be "
-		"'$border_size_val|' when '$usage_key| = $usage_val|'";
-
-	if(usage == "map") {
-		usage_ = IS_MAP;
-		symbols["border_size_val"] = "1";
-		VALIDATE(border_size_ == 1, vgettext(msg.c_str(), symbols));
-	} else if(usage == "mask") {
-		usage_ = IS_MASK;
-		symbols["border_size_val"] = "0";
-		VALIDATE(border_size_ == 0, vgettext(msg.c_str(), symbols));
-	} else if(usage == "") {
-		throw incorrect_map_format_error("Map has a header but no usage");
-	} else {
-		std::string msg = "Map has a header but an unknown usage:" + usage;
-		throw incorrect_map_format_error(msg);
-	}
-}
-
 int gamemap::read_header(const std::string& data)
 {
 	// Test whether there is a header section
@@ -291,7 +263,6 @@ int gamemap::read_header(const std::string& data)
 	::read(header, header_str);
 
 	border_size_ = header["border_size"];
-	set_usage(header["usage"]);
 
 	return header_offset + 2;
 }

src/map.hpp

@@ -74,11 +74,6 @@ class gamemap
 		SINGLE_TILE_BORDER
 		};
 
-	enum tusage {
-		IS_MAP,
-		IS_MASK
-		};
-
 	/**
 	 * Loads a map, with the given terrain configuration.
 	 *
@@ -104,7 +99,7 @@ class gamemap
 
 	virtual ~gamemap();
 
-	void read(const std::string& data, const bool allow_invalid = true, const int border_size = 1, const std::string usage = "map");
+	void read(const std::string& data, const bool allow_invalid = true, const int border_size = 1);
 
 	std::string write() const;
 
@@ -201,9 +196,6 @@ class gamemap
 	 */
 	enum { MAX_PLAYERS = 9 };
 
-	/** Returns the usage of the map. */
-	tusage get_usage() const { return usage_; }
-
 	/**
 	 * The default map header, needed for maps created with
 	 * terrain_translation::write_game_map().
@@ -234,8 +226,6 @@ class gamemap
 
 private:
 
-	void set_usage(const std::string& usage);
-
 	/**
 	 * Reads the header of a map which is saved in the deprecated map_data format.
 	 *
@@ -269,9 +259,6 @@ class gamemap
 private:
 	/** The size of the border around the map. */
 	int border_size_;
-
-	/** The kind of map is being loaded. */
-	tusage usage_;
 };
 
 #endif