Battery Problem

New generation of battle robot is developed but battery technology is still insufficient.

Game is played co-operatively by 2 players. One controls the robot, other controls the general.

Robot fires to enemy, moves horizontally:
Lef-Right Arrows to move, Up Arrow to fire.

General runs around, collects batteries and brings to the robot:
W-A-S-D to move.

Robot loses certain amounts of battery on moving or firing. Also battery decays as time passes.

General should avoid enemy robots. Also general can be hit by friendly fire.