Well Objects to come too the game is:
Zombies-They will spawn where you place them
Boxes-Just spawn solid blocks(They cannot stack at all sadly)
Operatable Objects- Such as a switch and buttons and such
This may not be a object but if possible Chat that connects to the ip(Must be Hamachi or local)
Cones-Used to just decorate for fun maybe for a zombie map? :)
Doors-Just to make buildings,stores,bases and ect
Wires-This maybe a little confusing when i put them in cause it will have collisioning sprites which maybe a little hard to figure out if its connected but try your circuit out with generators
Decoration-such as lamps,fences and ect
I think thats all im mentioning for now but Tell ME any things that should be added :)
.50 cal mounted on a hill!