Repair¶
Buildings, siege weapons and ships can be repaired by villagers.
Speed¶
Buildings are repaired at the base repairing speed of 750 hp/min which is not affected by the total hp of the building/unit.
Siege weapons and ships are repaired at 25% of the base speed (188 hp/min).
After the first villager, each villager repairs at 50% of the base speed (375 hp/min for building and 188 hp/min for siege weapons and ships).
Cost¶
For each hp repaired, resources equal to the half of corresponding build cost are deducted.
(repair 1 hp cost) = 0.5 * (build cost) / (build max hp)
Exceptions¶
Town center repair costs twice as much wood and not half. It also costs no stone except in Dark Age. Source
Math¶
750 hp/min = 750/60000 hp/msec = 0.0125 hp/msec => 80 msec/hp