i have an idea, but i can't

hmm....

I have an idea that mix a TD map and melee map

so..

at the starting you have a base as usually and 1 line for creeps

so we don't need to gather gold at first you can make tower to kill the coming creeps, so the money you get from the creeps you used for make up your base
and kill the other..
you get the idea??

if you can do that I'll be very Happy

(I can Make Terrain but can't make the trigger)

Thx