Finished boats can be repaired with the hammer without entering edit mode. Player boats generate a dynamic BuildCost at creation, to be used for repair costs, based on the total number of blocks * block costs. Hammer repair logic now checks if an entity should be repaired via the parent. Eg hitting a boat block will repair the boat. Added BaseCombatEntity.ShouldRepairViaParent and BaseCombatEntity.GetRepairableParent.