DUBSPLOSION
adjusted the rocket
Merge branch '16_rocketGraphics' of https://github.com/Metha-Gruppe/micropolis-java into 16_rocketGraphics
fixed sound playback
fixed sound timing
Merge branch '16_rocketGraphics' of https://github.com/Metha-Gruppe/methapolis-java into 16_rocketGraphics
merged
rocket speed adjustments
merged