HTML and CSS Reference
In-Depth Information
Creating Boxes
Thereareafewchangesweneedtomakeforthisexamplefrom
CH5EX23.html
whenwecre-
ate the boxes. In the loop, we set the x position for the boxes to be right on top of each other,
instead of offset to the right. We no longer need the boxes to fall over on their own; the balls
we shoot at the boxes will do that for us!
Wealsosetthedensityoftheboxesto20sothattheyarehardertoknockover,andwereduce
the restitution to .1 so that they don't bounce around as much as they did in the last example:
var
var
xpos
=
(
startX
)
/
scaleFactor
;
boxFixture
.
density
=
20.0
;
...
boxFixture
.
restitution
=
.
1
;
Also, when we create the walls, we set the wall restitution to .5, which means objects will be
less apt to bounce around on top of them:
wallFixture
.
restitution
=
.
5
;
