Armour

Armour reduces incoming damage. It essentially works like this:

local armour_strength = 0
for piece, tier in entity.EquippedArmour do
    -- piece = Boots, Chestplate, et cetera
    -- tier = Leather, Iron, et cetera
	armour_strength += CONSTANTS_ARMOUR[tier][piece]
end
for _, modifier in armour_protection_modifiers do
    -- currently the only modifiers are from Bed Wars upgrades
	armour_strength = modifier(entity, armour_strength)
end

damage *= 1 - armour_strength

Armour resistance values
	Helmet	Chestplate	Leggings	Boots
Leather	0.01	0.07	0.06	0.01
Iron	0.08	0.13	0.12	0.08
Gold	0.11	0.15	0.14	0.11
Diamond	0.13	0.17	0.18	0.13

Resources

Emerald

Diamond

Iron

Tools

Sword damage values

Wooden: 15
Iron: 25
Gold: 35
Diamond: 45

Other damage values

Hammer: 25
Metal Staff: 50
Arrow: 25 * charge (starting at 0, charge increases the longer the bow is charged until it hits 1)

Pickaxe multipliers on how long it takes to mine a block

These values are multiplied with block health, decreasing the time to mine the block (or keeping it the same in the case of the Wooden Pickaxe).

Wooden: 1
Iron: 0.8
Gold: 0.5
Diamond: 0.225

Projectile Tools

Default Bow: Shoots arrows, consuming them. In most gamemodes, the player has unlimited arrows, in which case the bow does not require arrows and does not consume any.

Admin Launcher: Shoots Admin eggs.

YouTuber Launcher: Shoots YouTuber eggs.

Other tools

Arrow: Used by the Default Bow.

Change Map: Allows for setting a specific map in Prebow Practice.

Blocks

Block health

This is the amount of seconds necessary to mine the block using the Wooden Pickaxe.

Clay: 1.8
Wood Planks: 3
Stone: 5
Bricks: 8
Iron: 13
Diamond: 25

Special cases

The bed object is made out of two blocks, both of which have a health value of 0.3. However, the bed is not an item.

TNT technically has a health value of 999, but it is immediately detonated at which point it is no longer mineable.

Consumables

Gold Apple: Always gives 20 extra health points. Depending on gamemode, either replenishes health to full or gives regeneration 3.

Pearl: Able to be thrown. Teleports the user to where the pearl lands.

Eggs

Admin egg

YouTuber egg