Function screeps::console::add_visual  
source · pub fn add_visual(target: Option<&JsString>, visual: &JsValue)Expand description
Add a visual, in json format, or multiple visuals separated by \n.
Each line must be:
- A serialized Visual, applying to a given room, if the target is the name of a room
- A serialized Visual, which will be shown in all rooms, if target isNone
- A serialized MapVisualShape, if the target is “map”