Basic Game Logic - 3D Game Development Practical Introduction - page 198

Exercises
1. Change the hit animation in Target script (Listing 15 in page 63) so that the
target the bullet hits moves fast to the front instead of rotation.
2. Change TargetFollower script (Listing 20 in page 69) so that it locks the rocket
on the farthest target from the shuttle instead of the nearest.
3. Add a new feature to ShuttleControl script (Listing 21 in page 70) to allow the
player to rotate the shuttle using horizontal mouse movement. You must read the
displacement of the mouse pointer and rotate the shuttle around the y axis.
4. Attach the script BulletShooter (Listing 22 in page 71) to the target prefab to
make the targets able to shoot bullets on the shuttle. You have to add a new script
that checks for collision between the bullet and the shuttle. Therefore you are going
to need a new bullet prefab. Finally, you have to make sure that all targets look
backwards (i.e. positive direction of their z axes point towards the shuttle).
5. Add a third type of collectables to our ball example in section 3.2, which has
a limited time effect on the collector. This effect is doubling the value of the col-
lected coins during the effect period, so if the collector collects this Doubler , and
then collects a coin with value 1, then the variable money in InventoryBox must be
increased by 2. You can select the ball object from the hierarchy during play, in or-
der to be able to observe the value of money all the time.
6. Make a switchable trigger that cycles the color of a light between three values:
red, yellow, and green. You can refer to triggers in scene12 in the accompanying
project to understand the idea.