The physics world to add the box to.
X position, in metres.
Y (vertical) position, in metres.
Z position, in metres.
Box width, in metres.
Box length, in metres.
Box height, in metres.
Box mass, in kg (ignored for a "fixed" body).
Any CSS color string.
"fixed" (immovable) or "dynamic" (affected by physics).
Creates a solid box in the scene - the general-purpose building block
createFloor/createWallare thin presets of.