devastator wrote:Well,when we agreed to not atack till 15th minute,on 8th minute this guy destroyed me with vipers.
Well... there's one solution for this: don't play against assholes who can't keep an agreement.
And preparing factory,facility and HQ is rushing yourself!
No, rushing means "attacking as soon as you can". You don't have to do that, in fact, you get an advantage for sitting back and letting the enemy rush come in.
However, one "clean" way (i.e. without any artificial "no-rush-boundaries" and the like) to "disable" early attacks would be to decrease the starting power on "low power level". Then you'd have to get your power station up, before you can build vipers in significant quantities.