Item modification

Item modification is a startup event.

ItemEvents.modification is a startup script event used to modify various properties of existing items.

ItemEvents.modification(event => {
  event.modify('minecraft:ender_pearl', item => {
    item.maxStackSize = 64
    item.fireResistant = true
    item.rarity = "UNCOMMON"
  })
  event.modify('minecraft:ancient_debris', item => {
    item.rarity = "RARE"
    item.fireResistant = false
    item.burnTime = 16000
  })
  event.modify('minecraft:turtle_helmet', item => {
    item.rarity = "EPIC"
    item.maxDamage = 481
    item.craftingRemainder = Item.of('minecraft:scute').item
  })
})

Available properties:

Property	Value type	Description
maxStackSize	int	Sets the maximum stack size for items. Default is 64 for most items.
maxDamage	int	Sets the maximum damage an item can take before it is broken.
craftingRemainder	Item	Sets the item left behind in the crafting grid when this item is used as a crafting ingredient (like milk buckets in the cake recipe). Most items do not have one.
fireResistant	boolean	If this item burns in fire and lava. Most items are false by default, but Ancient Debris and Netherite things are not.
rarity	Rarity	Sets the items rarity. This is mainly used for the name colour. COMMON by default. Nether Stars and Elytra are UNCOMMON, Golden Apples are RARE and Enchanted Golden Apples are EPIC.
burnTime	int	Sets the burn time (in ticks) in a regular furnace for this item. Note that Smokers and Blast Furnaces burn fuel twice as fast. Coal is 1600.
foodProperties	FoodProperties	Sets the items food properties to the provided properties. Can be null to remove food properties.
foodProperties	Consumer<FoodBuilder>	Sets the properties according to the consumer. See example below //TODO ADD LINK
digSpeed	float	Sets the items digging speed to the number provided. See table below for defaults.
tier	Consumer<MutableToolTier>	Sets the items tier according to the consumer. See example below //TODO ADD LINK
attackDamage	double	Adds an attack damage bonus. If this is a tool-type item then you should modify the tier instead. Can be negative.
attackSpeed	double	Adds an attack speed bonus. If this is a tool-type item then you should modify the tier instead. Can be negative.
armorProtection	double	Adds an armor protection bonus. Can be negative.
armorToughness	double	Adds an armor toughness bonus. Can be negative.
armorKnockbackResistance	double	Add an armor knockback resistance bonus. Can be negative. 1 is full knockback resistance.

 

Tool defaults

Tier	maxDamage	digSpeed	attackDamage (this is a bonus, not the final value)
Wood	59	2	0
Stone	131	4	1
Iron	250	6	2
Diamond	1561	8	3
Gold	32	12	0
Netherite	2031	9	4

Armor defaults

All boxes with multiple values are formatted [head, chest, legs, feet]. Boxes with single values are the same for every piece.

Tier	maxDamage	armourProtection	armorToughness	armorKnockbackResistance
Leather	[65, 75, 80, 55]	[1, 2, 3, 1]	0	0
Chain	[195, 225, 240, 165]	[1, 4, 5, 2]	0	0
Iron	[195, 225, 240, 165]	[2, 5, 6, 2]	0	0
Gold	[91 ,105, 112, 77]	[1, 3, 5, 2]	0	0
Diamond	[429, 495, 528, 363]	[3, 6, 8, 3]	2	0
Turtle (only has helmet)	[325, nil, nil. nil]	[2, nil, nil, nil]	0	0
Netherite	[481, 555, 592, 407]	[3, 6, 8, 3]	3	0.1
Elytra (not actually armor)	[nil, 432, nil, nil]	0	0	0

Tier

Food