Created the TileSheetManager class

This class will manage the large(ish) number of tile sheets for a specific
map.

common/mapsystem/tile_Sheet_manager.hpp

@@ -0,0 +1,52 @@
+/* Copyright: (c) Kayne Ruse 2013
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#ifndef TILESHEETMANAGER_HPP_
+#define TILESHEETMANAGER_HPP_
+
+#include "tile_sheet.hpp"
+
+#include <map>
+#include <string>
+
+class TileSheetManager {
+public:
+	TileSheetManager() = default;
+	~TileSheetManager() = default;
+
+	TileSheet* LoadSheet(std::string fname, Uint16 w, Uint16 h);
+	TileSheet* GetSheet(std::string name) {
+		return &sheetMap.at(name);
+	}
+	void UnloadSheet(std::string name) {
+		sheetMap.erase(name);
+	}
+
+	void DrawTo(SDL_Surface* const, int x, int y, int tileIndex);
+
+	int SetRangeEnd(int i) { return rangeEnd += i; }
+	int GetRangeEnd() const { return rangeEnd; }
+private:
+	std::map<std::string, TileSheet> sheetMap;
+	int rangeEnd = 0;
+};
+
+#endif

common/mapsystem/tile_sheet.cpp

@@ -21,12 +21,8 @@
 */
 #include "tile_sheet.hpp"
 
-#include "utility.hpp"
-
 #include <stdexcept>
 
-int TileSheet::rangeEnd = 0;
-
 SDL_Surface* TileSheet::LoadSurface(std::string fname, Uint16 w, Uint16 h) {
 	//setup the image
 	image.LoadSurface(fname);
@@ -37,14 +33,6 @@ SDL_Surface* TileSheet::LoadSurface(std::string fname, Uint16 w, Uint16 h) {
 	xCount = image.GetSurface()->w / w;
 	yCount = image.GetSurface()->h / h;
 	totalCount = xCount * yCount;
-
-	//cache the name
-	name = truncatePath(fname);
-
-	//set the range
-	begin = rangeEnd;
-	end = begin + totalCount;
-	rangeEnd += totalCount;
 }
 
 SDL_Surface* TileSheet::GetSurface() {
@@ -55,12 +43,11 @@ void TileSheet::FreeSurface() {
 	image.FreeSurface();
 	totalCount = xCount = yCount = 0;
 	begin = end = -1;
-	name.clear();
 }
 
 void TileSheet::DrawTo(SDL_Surface* const dest, int x, int y, int tileIndex) {
 	if (!InRange(tileIndex)) {
-		throw(std::runtime_error("Tile index out of range of Tile Sheet"));
+		throw(std::invalid_argument("Tile index out of range"));
 	}
 	Sint16 clipX = (tileIndex-begin) % xCount * image.GetClipW();
 	Sint16 clipY = (tileIndex-begin) / xCount * image.GetClipH();

common/mapsystem/tile_sheet.hpp

@@ -44,15 +44,9 @@ 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; }
 
-	std::string SetName(std::string s) { return name = s; }
-	std::string GetName() const { return name; }
-
 	int GetTotalCount() const { return totalCount; }
 	int GetXCount() const { return xCount; }
 	int GetYCount() const { return yCount; }
@@ -63,10 +57,7 @@ public:
 	int GetBegin() const { return begin; }
 	int GetEnd() const { return end; }
 private:
-	static int rangeEnd;
-
 	Image image;
-	std::string name;
 
 	//these are generated and used by internal processes
 	int totalCount = 0, xCount = 0, yCount = 0;

common/mapsystem/tile_sheet_manager.cpp

@@ -0,0 +1,48 @@
+/* Copyright: (c) Kayne Ruse 2013
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#include "tile_sheet_manager.hpp"
+
+#include "utility.hpp"
+
+#include <stdexcept>
+
+TileSheet* TileSheetManager::LoadSheet(std::string fname, Uint16 w, Uint16 h) {
+	//get the key
+	std::string key = truncatePath(fname);
+
+	//override what's already here
+	sheetMap.erase(key);
+
+	sheetMap[key].LoadSurface(fname, w, h);
+	rangeEnd += sheetMap[key].GetTotalCount();
+}
+
+void TileSheetManager::DrawTo(SDL_Surface* const dest, int x, int y, int tileIndex) {
+	for (auto& it : sheetMap) {
+		if (it.second.InRange(tileIndex)) {
+			it.second.DrawTo(dest, x, y, tileIndex);
+			return;
+		}
+	}
+	//No matching tile index
+	throw(std::invalid_argument("Tile index is out of range of all tile sheets"));
+}