need help with spawn waves

[nhammen]

Hello everyone and thanks to anyone who help in advance

I'm making a remake of an old td map and i need triggers for spawn waves and make the units to pass through 2 check points
Red arrows are the spawn point and yellow circles are end points and where the spawn circles are there should be check point so each player can build maze

 

[death_knight]

You will have to use unit groups and/or other such unit variables so that you can spawn the units, assign them to an appropriate unit variable and then use order the units to their first check points. Now: the unit variables come into play when sending the units to the next place they should be. so basically when a unit enters a region, use the unit variables to determine whether they should be heading to the next check point or heading to the end point.

The only potential problems that I can think of are:

1) Getting the triggers right such that all spawned units are stored in the appropriate variable for future use.

2) I'v heard that unit variables such as unit groups tend to leak. So if you do use this method, you might have to check that it doesnt leak.