Implement new player characteristic: Stamina. It should decrease when mele fighting enemies. It should restore when not fighting.
If there is not enough stamina to fight, the whole mele attack is cancelled and specific message is logged. Stamina value in that case is set to 0.
Implement new player stat: Endurance. It should influence on player max health (instead of strength) and max stamina.
Implement new player characteristic: Stamina. It should decrease when mele fighting enemies. It should restore when not fighting. If there is not enough stamina to fight, the whole mele attack is cancelled and specific message is logged. Stamina value in that case is set to 0.
Implement new player stat: Endurance. It should influence on player max health (instead of strength) and max stamina.