Moved some common/* files into directories

2013-10-27 20:17:37 +11:00
parent 43852ce755
commit 26eba2def6
28 changed files with 94 additions and 74 deletions
@@ -0,0 +1,59 @@
+/* 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.hpp"
+
+#include <stdexcept>
+
+void TileSheet::Load(std::string fname, Uint16 w, Uint16 h) {
+	//setup the image
+	image.LoadSurface(fname);
+	image.SetClipW(w);
+	image.SetClipH(h);
+
+	//get the tile counts
+	xCount = image.GetSurface()->w / w;
+	yCount = image.GetSurface()->h / h;
+	totalCount = xCount * yCount;
+
+	//set begin & end (usually temporary)
+	begin = 0;
+	end = totalCount;
+}
+
+void TileSheet::Unload() {
+	image.FreeSurface();
+	totalCount = xCount = yCount = 0;
+	begin = end = -1;
+}
+
+void TileSheet::DrawTo(SDL_Surface* const dest, int x, int y, int tileIndex) {
+	if (!InRange(tileIndex)) {
+		throw(std::invalid_argument("Tile index out of range"));
+	}
+	Sint16 clipX = (tileIndex-begin) % xCount * image.GetClipW();
+	Sint16 clipY = (tileIndex-begin) / xCount * image.GetClipH();
+
+	image.SetClipX(clipX);
+	image.SetClipY(clipY);
+
+	image.DrawTo(dest, x, y);
+}