I shall cry
It was far from perfect, simply two boxes creating a health bar... Using images and stretching or cropping it would create a much better graphical effect than this. But it does the job :p
` first, set the colour to white
INK RGB(250,250,250),0
` now, draw the background box. White box, at bottom of screen, which will be as big as the 'maxhealth' variable
box 0,440,maxhealth+1,460
` now for your actual health, colour change to red
INK RGB(250,0,0),0
` and then draw a box, 1 pixel smaller than the previous one in each direction (so that the white box will be an outline) and this box is as long as your health bariable
box 1,441,health,459