Game Development Reference
In-Depth Information
1. For each instance, we should create a
Geometry
class with a
Sphere
shape that will have the same radius as the size we will supply to the
StellarBody
control.
2. The
Geometry
class should both be attached to
rootNode
and
phys-
icsSpace
of
bulletAppState
.
3. We add
StellarBody
as a control to the
Geometry
class and the
gravitationalBodies
list.
7. Inside the
update
method, we have to take into account the gravity of the
StellarBody
instances.
8. First, we define a new
Vector3f
instance called
combinedGravity
.
9. Then, we loop through our
gravitationalBodies
list and apply the follow-
ing line of code to apply the gravity to
combinedGravity
:
combinedGravity.addLocal(body.getGravity(ship.getSpatial().getWorldTranslation()));
10. Finally, we call the
ship.setGravity(combinedGravity);
statement.
