Comment tweaks, build tweaks, bugfixes

I've also disabled the "screen trick". It was ugly as hell.

client/gameplay_scenes/world_characters.cpp

@@ -223,8 +223,7 @@ std::list<BoundingBox> World::GenerateCollisionGrid(Entity* ptr, int tileWidth,
 		//inner loop
 		wallBounds.y = snapToBase((double)wallBounds.h, ptr->GetOrigin().y);
 		while(wallBounds.y < (ptr->GetOrigin() + ptr->GetBounds()).y + ptr->GetBounds().h) {
-			//BUG: #45 this is the culprit; it's pulling regions into existance
-			//check to see if this tile is solid
+			//check to see if this tile is solid (non-existant tiles are always false)
 			if (regionPager.GetSolid(wallBounds.x / wallBounds.w, wallBounds.y / wallBounds.h)) {
 				//push onto the box set
 				boxList.push_front(wallBounds);

client/gameplay_scenes/world_map.cpp

@@ -29,7 +29,7 @@
 //static functions
 //-------------------------
 
-//TODO: proper checksum
+//TODO: (3) proper checksum
 static int regionChecksum(Region* const region) {
 	int sum = 0;
 	for(int i = 0; i < REGION_WIDTH; i++) {
@@ -104,7 +104,6 @@ void World::UpdateMap() {
 			}
 			else if (regionChecksum(region) == 0) {
 				//checksum failed
-				//BUG: #45 Regions occasionally lose their tile data; this patches the issue, but does not resolve it
 				regionPager.UnloadIf([region](Region const& ref) -> bool {
 					//remove the erroneous region
 					return region == &ref;