Added region highlighting

editor/editor_scene.cpp

@@ -23,6 +23,7 @@
 
 #include "utility.hpp"
 
+#include <stdexcept>
 #include <iostream>
 #include <cstdio>
 
@@ -85,7 +86,7 @@ void EditorScene::FrameEnd() {
 }
 
 void EditorScene::Render(SDL_Surface* const screen) {
-	pager.DrawTo(screen, &sheetList, 0, 0);
+	pager.DrawTo(screen, &sheetList, camera.x, camera.y);
 }
 
 //-------------------------
@@ -93,34 +94,36 @@ void EditorScene::Render(SDL_Surface* const screen) {
 //-------------------------
 
 void EditorScene::MouseMotion(SDL_MouseMotionEvent const& motion) {
+	if (motion.state & SDL_BUTTON_LMASK) {
 		//
+	}
+	else if (motion.state & SDL_BUTTON_RMASK) {
+		camera.x += motion.xrel;
+		camera.y += motion.yrel;
+	}
 }
 
 void EditorScene::MouseButtonDown(SDL_MouseButtonEvent const& button) {
 	switch(button.button) {
 		case SDL_BUTTON_LEFT: {
 			Region* ptr = pager.GetRegion(
-					snapToBase(pager.GetWidth(), button.x),
-					snapToBase(pager.GetHeight(), button.y)
+				snapToBase(pager.GetWidth(), button.x - camera.x),
+				snapToBase(pager.GetHeight(), button.y - camera.y)
 			);
 
-				cout << "New Tile: " <<
 			ptr->NewTileA({
-					snapToBase(32, button.x),
-					snapToBase(32, button.y),
+				snapToBase(32, button.x - camera.x),
+				snapToBase(32, button.y - camera.y),
 				0,
 				32,
 				32,
 				incrementer
-				})
-				<< endl;
-				;
+			});
 
 			if (++incrementer >= TileSheet::GetRangeEnd()) {
 				incrementer = 0;
 			}
 		}
-
 	}
 }
 

editor/editor_scene.hpp

@@ -53,6 +53,10 @@ protected:
 	RegionPager pager;
 	std::list<TileSheet> sheetList;
 
+	struct {
+		int x = 0, y = 0;
+	} camera;
+
 	//debugging
 	int incrementer = 0;
 };

editor/region.cpp

@@ -43,7 +43,12 @@ Region::Region(int _x, int _y, int _w, int _h):
 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"));
+		std::ostringstream os;
+		os << "New tile location out of bounds: " <<
+			"(" << x << "," << y << ")->" <<
+			"(" << tile.x << "," << tile.y << ")"
+		;
+		throw(std::runtime_error(os.str()));
 	}
 
 	int ret = tiles.erase(tile);
@@ -83,6 +88,13 @@ Tile Region::GetTileR(int tx, int ty, int minDepth) {
 int Region::DeleteTileR(Tile const& tile) {
 	if (!InBoundsR(tile.x, tile.y)) {
 		throw(std::runtime_error("Deleted tile location out of bounds"));
+
+		std::ostringstream os;
+		os << "Deleted tile location out of bounds: " <<
+			"(" << x << "," << y << ")->" <<
+			"(" << tile.x << "," << tile.y << ")"
+		;
+		throw(std::runtime_error(os.str()));
 	}
 	//sentinel/error code
 	if (tile.tileIndex == -1) {

editor/region_pager.cpp

@@ -85,6 +85,16 @@ void RegionPager::DrawTo(SDL_Surface* const dest, std::list<TileSheet>* const sh
 	*/
 
 	for (auto& regionIter : regionList) {
+		//draw the region's location
+		SDL_Rect box = {
+			Sint16(regionIter.GetX() + camX),
+			Sint16(regionIter.GetY() + camY),
+			Uint16(regionIter.GetWidth()),
+			Uint16(regionIter.GetHeight())
+		};
+		SDL_FillRect(dest, &box, SDL_MapRGB(dest->format, 10, 10, 20));
+
+		//draw each tile
 		for (auto& tileIter : *regionIter.GetTiles()) {
 			for (auto& sheetIter : *sheetList) {
 				if (sheetIter.InRange(tileIter.tileIndex)) {