In case you didn't know what I'm talking about, take a background/tile containing something that you want to make an object such as a bar. The bar is about 300 pixels wide and 32 pixels high at a 30 degree angle. Then take a sprite that's exactly like it, but fill the bar and place it over the tile where the bar is. When you start, only about 90 pixels would be present. When you done something specific, it goes up or down showing more of the sprite up to either 120 pixels or down to 60 pixels.
Edited by goldsonic46, 10 January 2012 - 04:58 AM.