Cameras and Game Controls - jMonkeyEngine 3.0 - page 61

}
}
3. Now that you have handled the key input, put the control Booleans to be used in
the update method. You might recognize the code if you've looked at
TestBetterCharacter . The first thing it does is get the current direction the
spatial object is facing in order to move forward and backwards. It also
checks which direction is left for strafing, as follows:
public void update(float tpf) {
super.update(tpf);
Vector3f modelForwardDir =
spatial.getWorldRotation().mult(Vector3f.UNIT_Z);
Vector3f modelLeftDir =
spatial.getWorldRotation().mult(Vector3f.UNIT_X);
walkDirection.set(0, 0, 0);
4. Depending on your Booleans, the following code modifies walkDirection .
Normally, you would multiply the result by tpf as well, but this is already
handled in the BetterCharacterControl class as follows:
if (forward) {
walkDirection.addLocal(modelForwardDir.mult(moveSpeed));
} else if (backward) {
walkDirection.addLocal(modelForwardDir.negate().multLocal(moveSpeed));
}
if (leftStrafe) {
walkDirection.addLocal(modelLeftDir.mult(moveSpeed));
} else if (rightStrafe) {
walkDirection.addLocal(modelLeftDir.negate().multLocal(moveSpeed));
}
5. Finally, in the setWalkDirection method, apply walkDirection as fol-
lows:
BetterCharacterControl.setWalkDirection(walkDirection);