Armor is equipment in Fortress Forever that all classes have. Armor reduces damage depending on its strength. Armor strengths are also referred to by colors, as some TFC maps had differently colored Armor (green for Light Armor, yellow for Medium Armor, and red for Heavy Armor) that gave you that type of Armor.
When a player receives damage, a percentage of that damage is absorbed by their Armor. When Armor absorbs damage, the player loses Armor Points. If a player's health goes to 0 or below, he will die - however, if a player's Armor goes down to 0 he will be fine.
If a player has 0 Armor Points, then he has no Armor and subsequently receives no damage absorbtion.
Players spawn with only half of their maximum Armor by default. However, mappers can use Lua to change this and have classes spawn with any amount of Armor they wish (as long as it does not go over the maximum amount).
When a player spawns (or if they receive damage), they can recover Armor by picking up more. Armor is represented by its own pickup (shown in the picture to the right); Armor can also be contained in bags. Armor pickups typically restore 150 armor, but this can be changed via Lua by mappers. Bags with Armor also provide the same default amount, and this can also be changed by mappers via Lua. Special map zones (such as beams, floor tiles, etc.) can also be coded to restore Armor.
Historically, this was called Green armor, but this designation is no longer used.
Historically, this was called Yellow armor, but this designation is no longer used.
Historically, this was called Red armor, but this designation is no longer used.
The Engineer is equipped with a special class of armor that might be called Medium-Light. The Engineer's armor absorbs 50% damage. If you sustain 10 points of damage, you will lose 5 health points and 5 armor points.