From Fantastic Wiki
Animated fire.
is a technique that can be created on levels to vaguely simulate fire. A combination of
dynamic rectangles and
dynamic circles can be put in a position where they overlap each other and oscillate for an infinite amount of time. This technique was discovered by user
sk89q and then implemented in his
On the Farm level to simulate a heated pot.
[edit] Explanation
Nearly static dynamic rectangle side.
The animated fire effect can be created by alternating dynamic rectangles and dynamic circles in an enclosed area. The area containing the objects should be smaller than the area that the objects take up in order to force the objects to vibrate. To ensure that the fire continues to vibrate for an indefinite amount of time, the objects should be surrounded on one side by a dynamic rectangle that is mostly static (the other three sides would consist of
static rectangles). The objects continue to vibrate until they find the ideal orientation of all the pieces; allowing one side to be a dynamic rectangle will hamper the ability of the objects to find a stable orientation.
In the top-most image, all the sides consist of static rectangles. Thus, eventually, that fire will cease to animate.
[edit] Examples
