Parallax Scrolling Backgrounds

[AntumDeluge]

Parallax scrolling support was added with 9257fe4. So this has been changed to just add parallax backgrounds to the following maps:

• 6_kikareukin_islands
• 7_kikareukin_clouds

The only problem that I am aware of is that the Java client will display a black background since tile information has been removed from those maps. Adding support is not planned, but might be good to at least think about researching a workaround that would use the old tiles.

Original Description

Proof of concept: https://www.youtube.com/watch?v=vyPkolxw5kY

Issues:

• seams between tiles (still an issue when background image is smaller than map size)
• jumps when tile group is shifted

There was some discussion about performance around April 7-8 that appears to not have been logged in IRC chat:

• hendrik: How much CPU does it use.
• AntumDeluge: Not sure yet. I would think that it would be similar to weather.
• AntumDeluge: I added a parallax background to Semos Bank to test CPU usage. Firefox reports around 6.8% while idling when both enabled & disabled on this machine. While walking it is around 8%-9% for both. I have another system with less available resources. I will test it on that eventually.