## buildings
* building: destroyable, placment adjectant, upgradeable
* cityCenter(main building / energy / workers / res)
** build: energy-10, worker-10, res-10
** prod: energy5, worker5, res5
* powerPlant (energy)
** build: energy-1, worker-2, res-2
** prod: energy1, worker-2, res-1
* apartments (workers)
** build: energy-2, worker-1, res-2
** prod: energy-2, worker1, res-2
* mine (res, capacity: 5)
** build: energy-2, worker-2, res-1
** prod: energy-2, worker-2, res1
* rails (connection) [Eigene Klasse]
** building destructor spawnt animationsobjekt
## remove
grid.removeBuilding("x;y");
## gl
power-loss: destroy random building != cityCenter
res:
