Block Json Object

id: The id of the block, should be identical.

states: The property containing BlockStates of the block.

properties: The properties of the block.

capabilites: An optional property, see Capabilities

BlockStates

This object will define the various states of block.

You have to have a state named default. Or, you write the block state property to the root level.

Common case:

{
    "id": "eg_block",
    "states": {
        "default": {
            "lightOpacity": 1,
            "lightLevel": 0.5,
            // other default properties all here
        },
        "someOtherState": {
            // some other property
        }
    },
}

All property goes root level:

{
    "id": "eg_block",
    "states": {
        "someOtherState": {
            // some other property
        }
    },
    "lightOpacity": 1,
    "lightLevel": 0.5,
    // other default properties all here
}

Then you could have some other custom states.

The state itself contains several property:

Property	Default Value	Range	Description	Example
material	No default, required field	Material	The various material related behavior of block	“grass”
stepSound	“stone”	SoundType	Sets the step sound of a block .	“wood”
harvest	{}	Harvest	Provide the harvest behavior of block.	{“level”: “stone”, “tool”: “pickaxe”}
bounding	[0, 0, 0, 1, 1, 1]	6 doubles	The outline box of the block	[0, 0, 0, 1, 0.5625, 1]
collision	[[0, 0, 0, 1, 1, 1]]	Array of 6 doubles array	The collision box of the block	[[0, 0, 0, 0.5, 0.5625, 0.5], [0.6,0.6,0.6,1,1,1]]
opacity	16	0-16	Sets how much light is subtracted when going through this block This is only used if isOpaqueCube() returns false	14
brightness	0.0	0.0-1.0	Sets how much light is emitted from the block. 0 means no light.	0.5
hardness	depends on material (stone:1.5; obsidian:50.0)	All Float	Sets how long it takes to break the block. Stone:1.5. Obsidian:50.0. Bedrock: -1	4.0
resistance	depends on material (stone:10.0; obsidian:2000.0)	All Float	Sets the block’s resistance against explosions	300

Harvest

The json object represents the harvest information of block.

Property	Default Value	Range	Description	Example
level	“wood”	“wood”, “stone”, “iron”, “diamond”	What level of tool could harvest this	“iron”
tool	””	The id of the tools, for default minecraft: “pickaxe”, “axe”, “shovel”	What kind of tool could harvest this	“axe”

largely ref from: https://bedrockminer.jimdo.com/modding-tutorials/basic-modding-1-8/first-block/

Material

this section is WIP, I’m filling the table

The string or object represent the material of block.

Object format:

Property	Default Value	Range	Description
isLiquid	false	true, false	If this material is type of liquid
flammbale	false	true, false	If this block can catch on fire
replacable	false	true, false	If this block is like tall grass or air can be replaced
mobility	””	“destroy”, “block”, “ignore”, “push_only”	The behavior of the block pushed by piston
isSolid	true	true, false	If this is a solid block. This is arguably…

Minecraft commonly used (in my opinion) built-in material:

Material	BlockLight(√)	Flammbale(x)	Replacable(x)	Solid(√)	Mobility(normal)	translucent	tool
air	x		√	x		√
grass						x
ground						x
wood		√
rock							√
iron							√
water	x		√	x	destroy	√
plants	x	√		x	destroy
cloth		√
leaves		√			destroy
sand
fire	x		√	x	destroy
ice
snow	x		√	x	destroy		√
glass
clay
cake					destroy
gourd					destroy

Minecraft special usage (in my opinion) built-in material:

Material	BlockLight(√)	Flammbale(x)	Replacable(x)	Solid(√)	Mobility(normal)	tool
lava	x		√	x	destroy
anvil					block	√
vine	x	√	√	x	destroy
sponge
circuits	x			x	destroy
carpet	x	√		x
redstone light
tnt		√
coral					destroy
packed ice
crafted snow						√
cactus
dragon egg					destroy
web					destroy	√
piston
barrier					block	√
structure void	x
portal	x			x	block

largely ref from: https://bedrockminer.jimdo.com/modding-tutorials/advanced-modding/block-materials/

SoundType

Minecraft have these built-in sound type: (too lazy to fill all the sound event)

name	volume	pitch	break	step	place	hit	fall
wood	1	1
ground	1	1
plant	1	1
stone	1	1
glass	1	1
cloth	1	1
sand	1	1
snow	1	1
ladder	1	1
anvil	0.3	1
slime	1	1

To register own sound type, create file under the folder def/blocks/sound-types/ with file [soundTyle].json

Then the file format is

{
    "volume": 1.0,
    "pitch": 1.0,
    "break": "soundName",
    "step": "soundName",
    "place": "soundName",
    "hit": "soundName",
    "fall": "soundName"
}

To view current built-in sound: Sounds (NOT DONE YET)