Add city map boundary

[timothymtorres]

• Add panning restriction to movement when near the edge of the map
• Make city map center around player's x/y position
• Add background image/sprite to display on map edges

[timothymtorres]

Managed to get the boundaries working for each side: left, right, top, bottom. I ran into a nasty bug where any of the corner boundaries (NE, NW, SW, SE) causes a glitch in the panning code causing it to teleport half the screen away. It’s really annoying and I can’t really figure out a good fix to get it resolved. The boundary code was already hack-ish so I’m going to try and add more duct tape to it and pray that it works.

[timothymtorres]

Meh, after trying for a while now I still wasn’t able to pinpoint where stuff was happening. It seems I can have zooming or panning enables but not both at the same time. I thought if I switched the map to staggered it would make it easier to set the boundary code, but I’m still getting scaling problems. Might have to rebuild this from scratch in order to get it working. That could take anywhere from a few days to a few weeks...