How can i make it build certain units and also build heros from say a barracks I still dont understand

How can i make it build certain units and also build heros from say a barracks

I still dont understand

Center a location on a unit, remove it, create the new one.

Center a location on a unit, remove it, create the new one.

Can i make it so as soon as ANY marines of player 1 are placed on the map a location will immediatley snap to them and through triggers change it to a raynor?

Can i make it so as soon as ANY marines of player 1 are placed on the map a location will immediatley snap to them and through triggers change it to a raynor?

sure current player brings at least 1 marine to anywhere -> center loc on marine at anywhere -> remove marine -> create raynore

sure

current player brings at least 1 marine to anywhere -> center loc on marine at anywhere -> remove marine -> create raynore

Make sure you preserve trigger the above. You might also want to either copy that trigger multiple times, or use hyper triggers to speed up the replacement.

Make sure you preserve trigger the above.

You might also want to either copy that trigger multiple times, or use hyper triggers to speed up the replacement.

Or both :P

Or both