Fully functional simulation of the Harvest ability based on buffs on the unit that look if the unit is being ordered to move to a specific target and is within range. Uses buff stacks to count the amount harvested. Allows for interrupting the harvest for a fraction of the gain (not possible with original ability as it is all or nothing). Also allows for more than four resources as each resource type can be represented by buff stacks and enables chains of manufacture/refining eg. coal + ore = iron + coal + gunpowder = cannon that is required to train a unit.
Has a building that employs the unit to do the task using a more effective system of commanding.
Also has a jostle buff that uses an Apply Force effect to ensure units do not stop moving when still far from the target.
