Health Bar -- Blender Game Engine

6.  Add an AND Controller to Player

Player selected

Buttons Window menu >> Logic (F4)
Controllers Add
AND Controller

7.  Add a Message Actuator to Player

We are sending the message to a Message Sensor connected to HealthBar.
It is triggered by the Subject "Damage_5Points"

Player selected

Buttons Window menu >> Logic (F4)
Actuators Add
Message Actuator
To:  HealthBar
Subject:  Damage_5Points

8.  Connect the Keyboard Sensor >> AND Controller >> Message Actuator

Player selected

Buttons Window menu >> Logic (F4)
Pull wire from brass bumps to brass dimples

9.  Start Game Engine

P key
User Preference menu >> Game >> Start Game  

Use Uparrow key to increase health.  Downarrow key to decrease health.

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