If an icon is changed into .png and a script is rewritten several lines, an icon will appear.

HI all
I have Plugin to introduce.
Mr. akitenh (秋天越) was made it.
Please use spdoor_e.rb, although an original Japanese version and an English-language edition are in ZIP.

Usage Menu>Draw>SP door generation
After a door is made, if SketchyPhysics is applied, opening and closing of a door and a slide can be performed.

SP door generation

Done

Tosiharu K