Strategy IdealArmyComposition blocks

[ImpulseCloud]

IdealArmyComposition:
[ArmyUnit (type, amount, when)]
Marine , 20 , BUILDUNTILFULL
Marauder , 10 , ONLYBELOWRATIO
Tanks , 2 , BUILDUNTILFULL
Medivacs , 4 , ONLYBELOWRATIO
Total_IAC_Size (36)

Strategies can choose to train a unit only-if-below-ratio (unit-amount / Total_IAC_Size), or build-until-full.
Once an 'IdealArmyComposition' is achieved, it can add units (Thor, 2) to current IAC, or tech-switch to completely different composition.
(The Supply-Building heuristic can use the current strategy's IAC to see which units ProdBuildings will be building to estimate supply need)

Think of in terms of: https://terrancraft.com/2014/08/30/understanding-build-orders-in-blocks/

A strategy's IAC can be dormant during an "Opening" and triggered after a certain point. (e.g. Chargelot-Rush only triggers IAC (of all zealots) after it has all the gates up it wants.