[PATCH] Limit arrows on certain buildings

[sanderd17]

Garrisoning units has different advantages currently:

• It increases arrows shot in defensive buildings
• Some buildings heal your units
• It's possible to transport them in ships
• It's good against the enemy trying to capture the building

For some of these effects, you need a big garrison capacity (f.e. big ships need to be able to transport a lot of units). However, if the fire rate enlarges linearly with the number of garrisoned units, the building becomes overpowered.

So some buildings would profit from limiting the arrow count to a certain number:

• The roman army camp should be limited to somewhere between a defense tower and a fortress. In history, it mostly served as protection for the army, while battles were being hold outside. Garrisoning more units will indeed protect them, and protect the building from being captured
• Many ships need to have a limited fire power. A big sea battle requires many ships, while you can transport many units with a few ships