Click to select unit -- click at another location to send the unit there. Change unitMovementSpeed to a larger number to make units move faster, make the number smaller to make units move slower. Change bullet speed to change it, and there is also a variable for the units' range called Unit Firing Range. Units will attack the closest enemy, as long as the enemy is within it's range. Damage has not been programmed yet. You can incorporate this engine into your game(s). However, please give me credit.