CS2D 
Health HUD
1 
Offline
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local screenx, screeny = 640, 480
local health_x, health_y = 98 + 6, screeny - (6 + 4)
function drawhudhealth (id)
if (not PLAYER.hud[id].health_bar) then
PLAYER.hud[id].health_bar = image (DIRECTORY.gfx .. "bar.png", health_x, health_y, 2, id)
end
if (not PLAYER.hud[id].health_overlay) then
PLAYER.hud[id].health_overlay = image (DIRECTORY.gfx .. "overlay.png", health_x, health_y, 2, id)
end
updatehudhealth (id)
end
function updatehudhealth (id)
local scale = player (id, "health") / player (id, "maxhealth")
local green = scale * 255
local red = 255 - green
local blue = 0
imagescale (PLAYER.hud[id].health_bar, scale, 1)
imagecolor (PLAYER.hud[id].health_bar, red, green, blue)
imagepos (PLAYER.hud[id].health_bar, health_x * scale, health_y, 0)
end
-- HOOKS
function hud_spawn (id)
drawhudhealth (id)
end
function hud_die (victim)
freeimage (PLAYER.hud[victim].health_bar)
freeimage (PLAYER.hud[victim].health_overlay)
end
function hud_always ()
for key, id in pairs (player (0, "tableliving")) do
updatehudhealth (id)
end
end
local hooks = {"spawn", "die", "always", "collect"}
for key, hook in pairs (hooks) do
addhook (hook, "hud_" .. hook)
end
Rainoth
? 
For me that is. It's every scripters personal choice how to write stuff. 