Upgrades Question

[Dwarvenfrog]

I'm making a tower defense game and would like each tower to have multiple upgrades (speed, damage, hp) that affects only themselves. Any ideas on how I should go about this?

Example: Arrow towers have an attack upgrade. If I build two Arrow Towers and buy the upgrade for one, the other should not get the attack bonus too.

To be ever the more clear, I'm talking about research upgrades, not upgrading from one unit to another.

 

[Avaleirra]

I sortof have a solution to this. Make it so that the tower is a unit not a building in the object editor (shouldn't make a difference ingame). Then make it so that when the upgrade is purchased you add an inventory than tomes to the tower. Remove the inventory after and you're good

 

[canons200]

make upgrade = another unit
but with that you will have to make many building in object editor

 

[Dwarvenfrog]

Interesting idea. Maybe I could make a tower that sells tomes to itself. I'd still appeciate ideas on the upgrades though, as the tome idea kinda puts a small monkey wrench in my plans.