Make a getOutput function

[TrebbleBiscuit]

Right now there's something like gameData.printer.output that gets multiplied by a constant whenever an upgrade applies. It should instead be calculated by a function so that balance changes can be retroactive.

This change will likely obsolete the prestige function.

ideally:

• qty
• upgradeLevel
• baseCost
• baseOuput
• baseUpgradeCost

i.e. rework calculation of cost, output, and upgrade cost. These should take as inputs:

• Some base value
• The number of already existing inputs

Perhaps in addition to something like baseCost there should be baseCostMultiplier? If so, I think that should be in its own data structure and not in the savegame. Actually, the same could be said for baseCost, baseOutput, and baseUpgradeCost...

[TrebbleBiscuit]

Also need:

• Upgrade cost addition (added to cost of upgrade when one is purchased)
• Upgrade cost multiplier (multiplied to cost of upgrade when one is purchased)
• Upgrade output multiplier (multiplied to output of product when upgrade is purchased)
• Quantity cost addition (added to cost of "factory" when another one is purchased)
• Quantity cost multiplier (multiplied to cost of "factory" when one is purchased)

[TrebbleBiscuit]

Perhaps I should create classes for these money generators and have this stuff all be properties of each object. Then I can have methods where you pass in qty and it spits out income.