Task 2: Implement terrain bonuses for units

Implement terrain as a variable in the bonus calculations for the units.

• A battle is now to be fought in this terrain.
• The simulation must support three types of terrain; HILL, PLAINS and FOREST.
• Unit bonuses must now be calculated based on the terrain they are fighting in.

InfantryUnit

• Units have an advantage when fighting in a FOREST.
• Units have this advantage both as attack and defence.

RangedUnit

• Units have an advantage when fighting on a HILL.
• When these units attack in a FORREST the attack bonus is lower than normal as it cannot attack from a distance.
• The unit still get bonus for being agile and terrain does not affect the defence bonus of this unit.

CavalryUnit

• Units have an advantage when fighting on PLAINS.
• When the unit is attacked in a FOREST the total defence bonus is zero. No advantage.