Decoupled the TileSheet class from the Map class

I moved the rangeEnd variable into the TileSheet class, making it static.
I also tweaked the return types for a few functions in Region, and removed
the sheetIndex member from Tile.

editor/region.cpp

@@ -40,13 +40,13 @@ Region::Region(int _x, int _y, int _w, int _h):
 	}
 }
 
-bool Region::NewTileR(Tile const& tile) {
+int Region::NewTileR(Tile const& tile) {
 	//return 1 for overwrite, 0 for insert
 	if (!InBoundsR(tile.x, tile.y)) {
 		throw(std::runtime_error("New tile location out of bounds"));
 	}
 
-	bool ret = tiles.erase(tile);
+	int ret = tiles.erase(tile);
 	tiles.insert(tile);
 	return ret;
 }
@@ -77,10 +77,10 @@ Tile Region::GetTileR(int tx, int ty, int minDepth) {
 	}
 
 	//a tileIndex of -1 is an error code, the rest is for show
-	return {0,0,0,-1,-1,-1,-1};
+	return {0,0,0,-1,-1,-1};
 }
 
-bool Region::DeleteTileR(Tile const& tile) {
+int Region::DeleteTileR(Tile const& tile) {
 	if (!InBoundsR(tile.x, tile.y)) {
 		throw(std::runtime_error("Deleted tile location out of bounds"));
 	}

editor/region.hpp

@@ -38,8 +38,8 @@ public:
 	~Region() = default;
 
 	//create and insert a new tile, overwriting an existing tile at that location
-	bool NewTileR(Tile const& tile);
+	int NewTileR(Tile const& tile);
-	bool NewTileA(Tile const& tile) {
+	int NewTileA(Tile const& tile) {
 		//these can change, if the Tile class is changed
 		return NewTileR({
 			tile.x - x,
@@ -47,7 +47,6 @@ public:
 			tile.depth,
 			tile.width,
 			tile.height,
-			tile.sheetIndex,
 			tile.tileIndex
 		});
 	}
@@ -59,17 +58,17 @@ public:
 	}
 
 	//wrap the other delete functions
-	bool DeleteTileR(int tx, int ty, int minDepth) {
+	int DeleteTileR(int tx, int ty, int minDepth) {
 		return DeleteTileR(GetTileR(tx, ty, minDepth));
 	}
-	bool DeleteTileA(int tx, int ty, int minDepth) {
+	int DeleteTileA(int tx, int ty, int minDepth) {
 		//explicitly skip one function call by adjusting from A to R
 		return DeleteTileR(GetTileR(tx - x, ty - y, minDepth));
 	}
 
 	//delete the specified tile
-	bool DeleteTileR(Tile const& tile);
+	int DeleteTileR(Tile const& tile);
-	bool DeleteTileA(Tile const& tile) {
+	int DeleteTileA(Tile const& tile) {
 		//these can change, if the Tile class is changed
 		return DeleteTileR({
 			tile.x - x,
@@ -77,7 +76,6 @@ public:
 			tile.depth,
 			tile.width,
 			tile.height,
-			tile.sheetIndex,
 			tile.tileIndex
 		});
 	}

editor/tile.hpp

@@ -29,17 +29,16 @@ struct Tile {
 
 	//graphics
 	int width, height;
-	int sheetIndex, tileIndex;
+	int tileIndex;
 
 	Tile() = default;
-	Tile(int _x, int _y, int _depth, int _width, int _height, int _sheetIndex, int _tileIndex) {
+	Tile(int _x, int _y, int _depth, int _width, int _height, int _tileIndex) {
 		//The order of the arguments should be explicit
 		x = _x;
 		y = _y;
 		depth = _depth;
 		width = _width;
 		height = _height;
-		sheetIndex = _sheetIndex;
 		tileIndex = _tileIndex;
 	}
 };

editor/tile_sheet.cpp

@@ -25,6 +25,8 @@
 
 #include <stdexcept>
 
+int TileSheet::rangeEnd = 0;
+
 SDL_Surface* TileSheet::LoadSurface(std::string fname, Uint16 w, Uint16 h) {
 	//setup the image
 	image.LoadSurface(fname);

editor/tile_sheet.hpp

@@ -45,6 +45,9 @@ public:
 
 	bool InRange(int i) { return i >= begin && i < end; }
 
+	static int SetRangeEnd(int i) { return rangeEnd = i; }
+	static int GetRangeEnd() { return rangeEnd; }
+
 	//accessors and mutators
 	Image* GetImage() { return &image; }
 
@@ -61,6 +64,8 @@ public:
 	int GetBegin() const { return begin; }
 	int GetEnd() const { return end; }
 private:
+	static int rangeEnd;
+
 	Image image;
 	std::string name;